EP0572959A1 - Brass alloy - Google Patents
Brass alloy Download PDFInfo
- Publication number
- EP0572959A1 EP0572959A1 EP19930108730 EP93108730A EP0572959A1 EP 0572959 A1 EP0572959 A1 EP 0572959A1 EP 19930108730 EP19930108730 EP 19930108730 EP 93108730 A EP93108730 A EP 93108730A EP 0572959 A1 EP0572959 A1 EP 0572959A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brass
- alloy
- alloy according
- samples
- brass alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 44
- 239000000956 alloy Substances 0.000 title claims abstract description 44
- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 25
- 239000010951 brass Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000011701 zinc Substances 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052745 lead Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000003651 drinking water Substances 0.000 claims description 2
- 235000020188 drinking water Nutrition 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 230000007847 structural defect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910001340 Leaded brass Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
Definitions
- the invention relates to a brass alloy, that is to say a kneaded or cast copper-zinc alloy.
- Such alloys are used, for example, in the optical industry, the jewelry industry, in the manufacture of pumps and in the manufacture of components for drinking water or sanitary installations.
- brass types with certain properties can be obtained. For example, it is common to add lead to the brass to improve machinability.
- Such types of brass are also referred to as "automatic brass”.
- Leaded brass grades for example Gk Ms 60 Fk, are used to manufacture components for sanitary installations, in particular water fittings.
- Such brass alloys have the disadvantage that they are not resistant to dezincification. Under corrosive influences, the zinc dissolves, in particular from the grain boundary areas, first of all of the layers near the surface. As dezincing progresses into the depth of the material, the structure of the workpiece is increasingly changed, which has the generally known consequences. With water fittings that come into contact with relatively aggressive water, this can lead to leaks in the fitting and ultimately make it necessary to replace it.
- the object of the invention is to provide a brass alloy in which this disadvantage does not occur. This object is achieved by a brass alloy with the composition mentioned in claim 1.
- the alloy according to the invention is resistant to dezincification and also has mechanical properties which it is particularly suitable for the production make components suitable for water installation, e.g. valves and fittings.
- the mechanical characteristics of the alloy according to the invention are comparable to the brass alloys previously used for the stated purpose.
- the structure of the alloy according to the invention essentially has globular grains with a maximum size of approximately 100 ⁇ m.
- a fine-grained structure is the prerequisite for a melt to solidify without voids, ie without the formation of cavities or porous, sponge-like areas.
- the structural defects mentioned are responsible, for example, for surface defects and leaks in fittings.
- the alloy according to the invention was subjected to a dezincification resistance test according to ISO 6509 (Corrosion of metals and alloys / Determination of decincification resistance of brass, 1981 edition). The depth of dezincification was measured in the polished section. The result of the dezincification resistance test is shown in the following table: Table 1: Dezincification depth ( ⁇ m) P1-4 ⁇ 393 P5 70 P6 100
- the samples P1 - P4 concern a conventional brass with the following composition (in% by weight): 60.06% Cu, 1.65% Pb, ⁇ 0.010% Mn, ⁇ 0.010% Si, 0.65% Al, 0.020% Sb, 0.0008% B, 0.080% Fe, 0.030% Ni, 0.10% Sn and the remainder Zn.
- the values for the samples P 1 - P 4 were summarized in one line and the average value of the dezincification depth was given; the maximum value was 600 ⁇ m, the minimum was 200 ⁇ m.
- the samples P 5 and P 6 consisting of the alloy according to the invention have significantly lower dezincification depths than the comparison samples P1-P4.
- the permissible depth of dezincification according to the BS standard for castings is 100 ⁇ m.
- Samples P 11 to P14 are comparative samples which were cast from a conventional brass alloy with a composition corresponding to samples P1 to P4.
- Water fittings were cast with the alloy according to the invention and processed using customary production methods. It was found that the surface of the castings has at least as good a polishability as that of fittings cast from conventional brass alloys. It no significant differences were observed when machining the castings on automatic production machines. It was possible to maintain the processing and setting parameters that were previously common.
- the structure of the alloy according to the invention has practically no blowholes or sponge-like areas.
- the latter is a loosened structure that contains cavities in the manner of a sponge. Both blowholes and "sponge areas" can lead to leaks if they occur in partitions between different pressure areas or in sealing surfaces.
- the casting shown in FIG. 1 was used in a series of tests. The break was carried out along the line II-II. The fracture line was chosen so that it runs through a casting-critical area, in which experience has shown that structural defects occur very frequently. 2 shows a 10X magnification of the recording of the breaking point of a specimen made of a conventional brass alloy.
- a spongy loosened area marked L can be clearly seen, which extends almost over the entire thickness D of the cast part wall. Such areas can later lead to leaks. If the areas extend over the entire thickness of a partition, there is a leak from the start in the case of a water fitting.
- 3 shows the breaking point of a specimen cast with the alloy according to the invention. It can be clearly seen that there is a continuously fine-grained and dense structure. A total of ten samples were examined in each case. Sponge-like areas as shown in FIG. 2 occurred in 5 of the comparison samples. The samples from the alloy according to the invention were always free from the structural defects mentioned.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Soft Magnetic Materials (AREA)
- Mechanical Operated Clutches (AREA)
- Contacts (AREA)
Abstract
Description
Die Erfindung betriffl eine Messinglegierung, also eine geknetete oder gegossene Kupfer-Zinklegierung. Derartige Legierungen finden beispielsweise Anwendung in der optischen Industrie, der Schmuckindustrie, bei der Pumpenherstellung und bei der Herstellung von Bauteilen für Trinkwasser- oder Sanitärinstallationen. Durch Zusatz bestimmter Legierungsbestandteile können Messingsorten mit bestimmten Eigenschaften erhalten werden. Beispielsweise ist es gebräuchlich, dem Messing Blei beizumengen, um die spangebende Bearbeitbarkeit zu verbessern. Derartige Messingsorten werden auch als "Automatenmessing" bezeichnet.The invention relates to a brass alloy, that is to say a kneaded or cast copper-zinc alloy. Such alloys are used, for example, in the optical industry, the jewelry industry, in the manufacture of pumps and in the manufacture of components for drinking water or sanitary installations. By adding certain alloy components, brass types with certain properties can be obtained. For example, it is common to add lead to the brass to improve machinability. Such types of brass are also referred to as "automatic brass".
Zur Herstellung von Bauteilen für die Sanitärinstallation, insbesondere von Wasserarmaturen, werden bleihaltige Messingsorten, beispielsweise Gk Ms 60 Fk, verwendet.Leaded brass grades, for example Gk Ms 60 Fk, are used to manufacture components for sanitary installations, in particular water fittings.
Derartige Messinglegierungen haben den Nachteil, daß sie nicht entzinkungsbeständig sind. Unter korrodierenden Einflüssen löst sich das Zink insbesondere aus den Korngrenzbereichen zunächst der oberflächennahen Schichten heraus. Mit in die Tiefe des Werkstoffes fortschreitender Entzinkung wird die Gefügestruktur des Werkstücks zusehends verändert, was die allgemein bekannten Folgen nach sich zieht. Bei Wasserarmaturen, die mit relativ aggressivem Wasser in Berührung kommen, kann dies zu Undichtigkeiten in der Armatur führen und letztlich deren Austausch erforderlich machen.Such brass alloys have the disadvantage that they are not resistant to dezincification. Under corrosive influences, the zinc dissolves, in particular from the grain boundary areas, first of all of the layers near the surface. As dezincing progresses into the depth of the material, the structure of the workpiece is increasingly changed, which has the generally known consequences. With water fittings that come into contact with relatively aggressive water, this can lead to leaks in the fitting and ultimately make it necessary to replace it.
Davon ausgehend ist die Aufgabe der Erfindung, eine Messinglegierung bereitzustellen, bei der dieser Nachteil nicht auftritt. Diese Aufgabe wird durch eine Messinglegierung mit der in Anspruch 1 genannten Zusammensetzung gelöst.Based on this, the object of the invention is to provide a brass alloy in which this disadvantage does not occur. This object is achieved by a brass alloy with the composition mentioned in claim 1.
Die erfindungsgemäße Legierung ist entzinkungsbeständig und weist darüber hinaus mechanische Eigenschaften auf, die sie für die Herstellung insbesondere von Bauteilen für die Wasserinstallation, also etwa Ventile und Armaturen, geeignet machen.The alloy according to the invention is resistant to dezincification and also has mechanical properties which it is particularly suitable for the production make components suitable for water installation, e.g. valves and fittings.
Um ausgehend von herkömmlichen Messinglegierungen wie Ms 60 Fk zu entzinkungsbeständigen Messinglegierungen zu gelangen, ist es notwendig den Cu-Gehalt zu erhöhen, beispielsweise auf 64 %. Derartige Legierungen sind jedoch für viele Anwendungen, insbesondere für die Herstellung von Armaturen für den Sanitärbereich nicht geeignet, da sie ein zu grobes Gefüge aufweisen, was die bekannten negativen Begleiterscheinungen wie verstärkte Lunkerbildung nach sich zieht. Versuche, bei Messinglegierungen mit einem erhöhten Cu-Gehalt eine Kornfeinung mit dem üblicherweise dafür verwendeten Bor durchzuführen mißlangen bisher. Deshalb wurden für den angesprochenen Verwendungszweck praktisch nur die bekannten, nicht entzinkungsbeständigen Legierungen verwendet.In order to achieve dezincification-resistant brass alloys based on conventional brass alloys such as Ms 60 Fk, it is necessary to increase the Cu content, for example to 64%. However, such alloys are not suitable for many applications, in particular for the manufacture of fittings for the sanitary area, since they have a structure which is too coarse, which leads to the known negative side effects such as increased blowholing. Attempts to carry out grain refinement with the boron usually used for this purpose have so far failed with brass alloys with an increased Cu content. For this reason, only the known, non-dezincification-resistant alloys were used for the intended purpose.
Es hat sich nun überraschenderweise gezeigt, daß trotz eines gegenüber den bekannten Legierungen erhöhten Cu-Gehaltes eine Kornfeinung mit Bor möglich ist, wenn die Elemente Mn, Si und Sb in erfindungsgemäßen Mengen zulegiert werden und gleichzeitig der Fe-Gehalt auf maximal 0,25 Gew.% begrenzt wird. Es stellte sich weiterhin überraschenderweise heraus, daß die Legierung eine verbesserte Warmbrüchigkeit aufweist, wenn der Gehalt an Sn möglichst gering ist, zumindest aber 0,25 Gew. % nicht überschreitet. Ein weiterer Vorteil der Erfindung besteht darin, daß Auftreten von Harteinschlüssen stark zurückgedrängt ist. Harteinschlüsse, die vor allem bei der Oberfächenbearbeitung störend sind, treten bei herkömmlichen Messinglegierungen vor allem dann verstärkt auf, wenn sie mit Bor gefeint sind.It has now surprisingly been found that, despite a higher Cu content compared to the known alloys, grain refinement with boron is possible if the elements Mn, Si and Sb are added in amounts according to the invention and at the same time the Fe content is at most 0.25% by weight .% is limited. It was also surprisingly found that the alloy exhibits improved heat brittleness if the Sn content is as low as possible, but at least does not exceed 0.25% by weight. Another advantage of the invention is that the occurrence of hard inclusions is strongly suppressed. Hard inclusions, which are particularly troublesome when processing surfaces, occur more frequently in conventional brass alloys when they are refined with boron.
Die mechanischen Kenndaten der erfindungsgemäßen Legierung sind durchwegs mit den bisher für den genannten Zweck verwendeten Messinglegierungen vergleichbar. Das Gefüge der erfindungsgemäßen Legierung weist im wesentlichen globulitische Körner mit einer maximalen Größe von etwa 100 µm auf. Ein feinkörniges Gefüge ist die Voraussetzung dafür, daß eine Schmelze lunkerfrei, d.h. also ohne Ausbildung von Hohlräumen oder porösen, schwammartigen Bereichen erstarrt. Die genannten Gefügefehler sind beispielsweise verantwortlich für Oberfächenfehler und Undichtigkeiten bei Armaturen.The mechanical characteristics of the alloy according to the invention are comparable to the brass alloys previously used for the stated purpose. The structure of the alloy according to the invention essentially has globular grains with a maximum size of approximately 100 μm. A fine-grained structure is the prerequisite for a melt to solidify without voids, ie without the formation of cavities or porous, sponge-like areas. The structural defects mentioned are responsible, for example, for surface defects and leaks in fittings.
In den Unteransprüchen 2 bis 4 sind vorteilhafte Ausführungsbeispiele der erfindungsgemäßen Legierung angegeben.Advantageous exemplary embodiments of the alloy according to the invention are specified in subclaims 2 to 4.
Die Erfindung wird im folgenden näher erläutert:The invention is explained in more detail below:
Es wurden Versuche mit einer Messinglegierung durchgeführt, die (in Gew.%) 63,20 % Cu, 1,38 % Pb, 0,39 % Mn, 0,55 Si, 0,55 Al, 0,09 % Sb, 9 ppm B, 0,23 % Fe, 0,19 % Ni, 0,21 % Sn und als Rest Zn enthält. Die weiter unten erwähnten Proben P5 - P10 wurden aus dieser Legierung gegossen.Experiments were carried out with a brass alloy which (in% by weight) 63.20% Cu, 1.38% Pb, 0.39% Mn, 0.55 Si, 0.55 Al, 0.09% Sb, 9 Contains ppm B, 0.23% Fe, 0.19% Ni, 0.21% Sn and the balance Zn. Samples P5 - P10 mentioned below were cast from this alloy.
Die erfindungsgemäße Legierung wurde einer Entzinkungsbeständigkeitsprüfung nach ISO 6509 (Corrosion of metals and alloys/Determination of dezincification resistance of brass, Ausgabe 1981) unterzogen. Die Entzinkungstiefen wurden im polierten Schliff gemessen. Das Ergebnis der Entzinkungsbeständigkeitsprüfung geht aus der folgenden Tabelle hervor:
Die Proben P1 - P4 betreffen ein herkömmliches Messing mit der folgenden Zusammensetzung (in Gew.%): 60,06 % Cu, 1,65 % Pb, < 0,010 % Mn, < 0,010 % Si, 0,65 % Al, 0,020 % Sb, 0,0008 % B, 0,080 % Fe, 0,030 % Ni, 0,10 % Sn und als Rest Zn. Die Werte für die Proben P 1 - P 4 wurden in einer Zeile zusammengefaßt und der Durchschnittswert der Entzinkungstiefe angegeben; der maximale Wert lag bei 600 µm, der minimale bei 200 µm.The samples P1 - P4 concern a conventional brass with the following composition (in% by weight): 60.06% Cu, 1.65% Pb, <0.010% Mn, <0.010% Si, 0.65% Al, 0.020% Sb, 0.0008% B, 0.080% Fe, 0.030% Ni, 0.10% Sn and the remainder Zn. The values for the samples P 1 -
Aus der Tabelle 1 geht deutlich hervor, daß die aus der erfindungsgemäßen Legierung bestehenden Proben P 5 und P 6 wesentlich geringere Entzinkungstiefen aufweisen als die Vergleichsproben P1 - P4. Entsprechend der Normen BS 2872, BS 2874 (BS= Britischer Standard) und SS 11710 (SS= schwedischer Standard (bzw. der schwedischen Baunorm R 8 ist die erfindungsgemäße Legierung daher als entzinkungsbeständig einzustufen. Die zulässige Entzinkungstiefe gemäß der BS-Norm für Gußstücke beträgt 100 µm.From Table 1 it is clear that the
In weiteren Versuchen wurden übliche mechanische Kennwerte ermittelt. Das Ergebnis dieser Versuche ist in der Tabelle 2 dargestellt. Die Zusammensetzung der Proben P 7 bis P 10 entspricht jener der Proben P 5 und P 6. Die Proben P 11 bis P14 sind Vergleichsproben, die aus einer herkömmlichen Messinglegierung mit einer den Proben P1 bis P4 entsprechenden Zusammensetzung gegossen wurden.
Wie die Tabelle 2 zeigt, sind die mechanischen Kenndaten der erfindungsgemäßen Legierung mit jenen der herkömmlichen Legierungen vergleichbar. Die Zugfestigkeit ist im Durchschnitt sogar etwas höher als bei den Vergleichsproben aus der bekannten Legierung.As Table 2 shows, the mechanical characteristics of the alloy according to the invention are comparable to those of the conventional alloys. The tensile strength is on average even slightly higher than that of the comparison samples made from the known alloy.
Mit der erfindungsgemäßen Legierung wurden Wasserarmaturen gegossen und mit üblichen Fertigungsmethoden bearbeitet. Dabei zeigte sich, daß die Oberfläche der Gußteile eine mindestens ebenso gute Polierfähigkeit aufweist, als jene von aus herkömmlichen Messinglegierungen gegossenen Armaturen. Es wurden auch keine signifikanten Unterschiede bei der Bearbeitung der Gußteile an automatischen Fertigungsmaschinen beobachtet. Es konnten im wesentlichen bisher übliche Bearbeitungs- und Einstell-Parameter beibehalten werden.Water fittings were cast with the alloy according to the invention and processed using customary production methods. It was found that the surface of the castings has at least as good a polishability as that of fittings cast from conventional brass alloys. It no significant differences were observed when machining the castings on automatic production machines. It was possible to maintain the processing and setting parameters that were previously common.
Mit Hilfe von zahlreichen, aus einer Legierung gemäß Anspruch 3 gegossenen Bruchproben wurde festgestellt, daß das Gefüge der erfindungsgemäßen Legierung praktisch keine Lunker- oder schwammartigen Bereiche aufweist. Bei letzteren handelt es sich um eine aufgelockerte, nach Art eines Schwammes Hohlräume enthaltende Gefügestruktur. Sowohl Lunker als auch "Schwammbereiche" können, wenn sie in Trennwänden zwischen unterschiedlichen Druckbereichen oder in Dichtungsflächen auftreten, zu Undichtigkeiten führen. Bei einer Versuchsreihe wurde der in Fig. 1 dargestellte Gußkörper verwendet. Der Bruch wurde entlang der Linie II-II ausgeführt. Die Bruchlinie wurde so gewählt, daß sie durch einen gießtechnisch kritischen Bereich verläuft, in dem erfahrungsgemäß sehr häufig Gefügefehler auftreten. Fig. 2 zeigt in 1O-facher Vergrößerung die Aufnahme der Bruchstelle eines Probenkörpers aus herkömmlicher Messinglegierung. Es ist deutlich ein mit L gekennzeichneter schwammig aufgelockerter Bereich zu erkennen, der sich nahezu über die gesamte Dicke D der Gußteilwand erstreckt. Derartige Bereiche können später zu Undichtigkeiten führen. Sofern sich die Bereiche über die gesamte Dicke einer Trennwand erstrecken ist im Falle einer Wasserarmatur von anfang an eine Undichtigkeit vorhanden. Fig. 3 zeigt die Bruchstelle eines mit der erfindungsgemäßen Legierung gegossenen Probekörpers. Es ist deutlich zu sehen, daß hier ein durchgehend feinkörniges und dichtes Gefüge vorhanden ist. Es wurden insgesamt jeweils zehn Proben untersucht. Schwammartige Bereiche wie in Fig. 2 dargestellt traten bei 5 der Vergleichsproben auf. Die Proben aus der erfindungsgemäßen Legierung waren stets frei von den genannten Gefügefehlern.With the help of numerous fracture samples cast from an alloy according to claim 3, it was found that the structure of the alloy according to the invention has practically no blowholes or sponge-like areas. The latter is a loosened structure that contains cavities in the manner of a sponge. Both blowholes and "sponge areas" can lead to leaks if they occur in partitions between different pressure areas or in sealing surfaces. The casting shown in FIG. 1 was used in a series of tests. The break was carried out along the line II-II. The fracture line was chosen so that it runs through a casting-critical area, in which experience has shown that structural defects occur very frequently. 2 shows a 10X magnification of the recording of the breaking point of a specimen made of a conventional brass alloy. A spongy loosened area marked L can be clearly seen, which extends almost over the entire thickness D of the cast part wall. Such areas can later lead to leaks. If the areas extend over the entire thickness of a partition, there is a leak from the start in the case of a water fitting. 3 shows the breaking point of a specimen cast with the alloy according to the invention. It can be clearly seen that there is a continuously fine-grained and dense structure. A total of ten samples were examined in each case. Sponge-like areas as shown in FIG. 2 occurred in 5 of the comparison samples. The samples from the alloy according to the invention were always free from the structural defects mentioned.
Es wurden auch Schliffe angefertigt und mit üblichen metallographischen Methoden die Gefügestruktur sichtbar gemacht. Es zeigte sich, daß das Gefüge der erfindungsgemäßen Legierung etwa globulitische Körner mit einer maximalen Größe von 100 µm aufweist.Grindings were also made and the structure of the structure was made visible using standard metallographic methods. It was found that the structure of the alloy according to the invention has approximately globulitic grains with a maximum size of 100 μm.
Ein indirekter Rückschluß auf das Fehlen von Schwammbereichen konnte durch eine Druckdichtigkeitsuntersuchung von Wasserarmaturen erhalten werden. Es wurden 110 Armaturen mit 6 Bar Luft unter Wasser beaufschlagt. Bei keiner der Armaturen konnte eine Undichtigkeit beobachtet werden.An indirect conclusion about the lack of sponge areas could be obtained from a pressure tightness test of water fittings. 110 fittings were pressurized with 6 bar of air under water. No leakage was observed in any of the fittings.
Claims (5)
gekennzeichnet durch
folgende Zusammensetzung (Gew.%):
marked by
following composition (% by weight):
gekennzeichnet durch
folgende Zusammensetzung (Gew.%):
marked by
following composition (% by weight):
gekennzeichnet durch
folgende Zusammensetzung (Gew.%):
marked by
following composition (% by weight):
gekennzeichnet durch
folgende Zusammensetzung (Gew.%):
marked by
following composition (% by weight):
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4218514 | 1992-06-02 | ||
| DE4218514 | 1992-06-02 | ||
| DE4318377 | 1993-05-28 | ||
| DE4318377A DE4318377C2 (en) | 1992-06-02 | 1993-05-28 | Brass alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0572959A1 true EP0572959A1 (en) | 1993-12-08 |
| EP0572959B1 EP0572959B1 (en) | 1997-02-19 |
Family
ID=25915427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93108730A Expired - Lifetime EP0572959B1 (en) | 1992-06-02 | 1993-05-29 | Brass alloy |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0572959B1 (en) |
| AT (1) | ATE149042T1 (en) |
| AU (1) | AU664092B2 (en) |
| ES (1) | ES2099863T3 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014606A1 (en) * | 1999-08-26 | 2001-03-01 | Tour & Andersson Hydronics Ab | Die-casting brass alloy which is resistant to dezincification |
| WO2003046237A1 (en) * | 2001-11-27 | 2003-06-05 | Rehau Ag + Co | Use of a non-corrosive copper-zinc alloy for drinking water shaped parts |
| US7354489B2 (en) | 2003-02-28 | 2008-04-08 | Wieland-Werke Ag | Lead-free copper alloy and a method of manufacture |
| CN101451204B (en) * | 2008-12-15 | 2010-10-13 | 无锡吉泉五金机械有限公司 | Guide ball for automobile air conditioner and preparation method thereof |
| DE102013004081A1 (en) * | 2013-03-11 | 2014-09-11 | Hansa Metallwerke Ag | Sanitary fitting body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2159482A1 (en) * | 1971-12-01 | 1973-06-07 | Schreiber Gmbh Carl | Brass casting alloy - for hot rolling sheets strip etc giving high stress values and corrosion resistance |
| WO1989008725A1 (en) * | 1988-03-16 | 1989-09-21 | Tour & Andersson Ab | Brass alloy and process of making and use of same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH540342A (en) * | 1970-08-20 | 1973-08-15 | Olof Manner Ab | Copper-zinc alloy - for pressure-proof pipe fittings made by a variety of methods |
| FR2353648A1 (en) * | 1976-05-31 | 1977-12-30 | Afica | Two=phase alpha-beta brass - has good castability and no annealing of the casting is necessary |
-
1993
- 1993-05-29 AT AT93108730T patent/ATE149042T1/en not_active IP Right Cessation
- 1993-05-29 EP EP93108730A patent/EP0572959B1/en not_active Expired - Lifetime
- 1993-05-29 ES ES93108730T patent/ES2099863T3/en not_active Expired - Lifetime
- 1993-06-02 AU AU40004/93A patent/AU664092B2/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2159482A1 (en) * | 1971-12-01 | 1973-06-07 | Schreiber Gmbh Carl | Brass casting alloy - for hot rolling sheets strip etc giving high stress values and corrosion resistance |
| WO1989008725A1 (en) * | 1988-03-16 | 1989-09-21 | Tour & Andersson Ab | Brass alloy and process of making and use of same |
Non-Patent Citations (1)
| Title |
|---|
| CHEMICAL ABSTRACTS, Band 78, Nr. 18, 7. Mai 1973, Columbus, Ohio, USA LJUNGSTROMER, LARS "Brass, resistant against dezincifi- cation" Seite 211, Zusammenfassung- -Nr. 114 583h * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001014606A1 (en) * | 1999-08-26 | 2001-03-01 | Tour & Andersson Hydronics Ab | Die-casting brass alloy which is resistant to dezincification |
| US6787101B1 (en) | 1999-08-26 | 2004-09-07 | Tour & Andersson Ab | Die-casting brass alloy which is resistant to dezincification |
| WO2003046237A1 (en) * | 2001-11-27 | 2003-06-05 | Rehau Ag + Co | Use of a non-corrosive copper-zinc alloy for drinking water shaped parts |
| US7354489B2 (en) | 2003-02-28 | 2008-04-08 | Wieland-Werke Ag | Lead-free copper alloy and a method of manufacture |
| CN101451204B (en) * | 2008-12-15 | 2010-10-13 | 无锡吉泉五金机械有限公司 | Guide ball for automobile air conditioner and preparation method thereof |
| DE102013004081A1 (en) * | 2013-03-11 | 2014-09-11 | Hansa Metallwerke Ag | Sanitary fitting body |
| DE102013004081B4 (en) | 2013-03-11 | 2023-06-07 | Hansa Metallwerke Ag | Sanitary fitting body |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2099863T3 (en) | 1997-06-01 |
| AU664092B2 (en) | 1995-11-02 |
| AU4000493A (en) | 1993-12-09 |
| ATE149042T1 (en) | 1997-03-15 |
| EP0572959B1 (en) | 1997-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69828818T2 (en) | AUTOMATED ALLOY ON COPPER BASE | |
| EP3225707B1 (en) | Component for media-conducting gas or water lines comprising a copper alloy | |
| DE69506372T2 (en) | ALUMINUM ALLOY FOR DIE CASTING AND BALL JOINT PRODUCED WITH IT | |
| EP2964798B1 (en) | Copper-zinc alloy for a plumbing fitting and method for the production thereof | |
| DE69416512T2 (en) | YELLOW REDUCED LEAD BISMUT BRASS | |
| DE10301552B3 (en) | Use of a brass alloy for corrosion resistant drinking water molded parts, especially coupling parts, angular parts, angular bent parts, T-pieces, distribution parts and fittings | |
| EP0642596B1 (en) | Brass alloy | |
| DE60029260T2 (en) | cutting alloy | |
| EP1817438B1 (en) | Low-migration copper alloy | |
| EP0572959B1 (en) | Brass alloy | |
| DE2728621A1 (en) | FERROUS MATERIAL FOR ROLLERS AND ROLLS MANUFACTURED WITH IT FOR HOT ROLLING MILLS OR DGL. | |
| DE4233668C2 (en) | Corrosion-resistant copper-based alloy | |
| EP3938552B1 (en) | Method for producing metal components and metal component produced in this way | |
| EP1273671A1 (en) | Dezincification resistant copper-zinc alloy and method for producing the same | |
| DE4318377C2 (en) | Brass alloy | |
| DE60209590T2 (en) | cutting steel | |
| DE3828397A1 (en) | HIGH-STRENGTH, EASILY POURABLE ZINC ALLOY | |
| DE202007019373U1 (en) | Use of a bronze alloy for a worm gear | |
| EP1980633B1 (en) | Use of a bronze alloy for a worm gear | |
| WO1994024325A1 (en) | Brass alloy | |
| DE102019107445A1 (en) | High strength and high wear resistant cast aluminum alloy | |
| DE69417421T2 (en) | HIGH-STRENGTH BERYLLIUM-COPPER ALLOY WITH GOOD WORKABILITY AND HEAT RESISTANCE AND THEIR PRODUCTION | |
| DE102018212942B4 (en) | Method for producing a melt of a copper casting alloy and casting produced from this melt | |
| EP3899073B1 (en) | Cu-zn alloy | |
| AT276786B (en) | Sliding material and process for its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MOEHNER, BERND Inventor name: STOOSS, JUERGEN Inventor name: WASCHKE, HELMUT |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MOEHNER, BERND Inventor name: STOSS, JUERGEN Inventor name: WASCHKE, HELMUT |
|
| 17P | Request for examination filed |
Effective date: 19940125 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HANSA METALLWERKE AG Owner name: HETZEL METALLE GMBH |
|
| 17Q | First examination report despatched |
Effective date: 19951207 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970219 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970219 Ref country code: DK Effective date: 19970219 |
|
| REF | Corresponds to: |
Ref document number: 149042 Country of ref document: AT Date of ref document: 19970315 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59305476 Country of ref document: DE Date of ref document: 19970327 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: 72114 |
|
| ITF | It: translation for a ep patent filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Effective date: 19970519 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970501 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19970529 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19970529 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19970531 Ref country code: BE Effective date: 19970531 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2099863 Country of ref document: ES Kind code of ref document: T3 |
|
| ET | Fr: translation filed | ||
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| BERE | Be: lapsed |
Owner name: HANSA METALLWERKE A.G. Effective date: 19970531 Owner name: HETZEL METALLE G.M.B.H. Effective date: 19970531 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Effective date: 19971130 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000510 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000517 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20000523 Year of fee payment: 8 Ref country code: SE Payment date: 20000523 Year of fee payment: 8 Ref country code: DE Payment date: 20000523 Year of fee payment: 8 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20000524 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010529 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010530 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010530 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010628 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010628 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010529 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020301 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030303 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050529 |