EP0572959A1 - Alliage de laiton - Google Patents

Alliage de laiton Download PDF

Info

Publication number: EP0572959A1
Authority: EP; European Patent Office
Prior art keywords: brass; alloy; alloy according; samples; brass alloy
Prior art date: 1992-06-02
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

Application number

EP19930108730

Other languages

German (de)

English (en)

Other versions

EP0572959B1 (fr

Inventor

Helmut Waschke

Jürgen Stoss

Bernd Möhner

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

HETZEL METALLE GMBH

Hansa Metallwerke AG

Original Assignee

HETZEL METALLE GmbH

Hansa Metallwerke AG

Priority date (The priority date 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 date listed.)

1992-06-02

Filing date

1993-05-29

Publication date

1993-12-08

1993-05-28 Priority claimed from DE4318377A external-priority patent/DE4318377C2/de

1993-05-29 Application filed by HETZEL METALLE GmbH, Hansa Metallwerke AG filed Critical HETZEL METALLE GmbH

1993-12-08 Publication of EP0572959A1 publication Critical patent/EP0572959A1/fr

1997-02-19 Application granted granted Critical

1997-02-19 Publication of EP0572959B1 publication Critical patent/EP0572959B1/fr

2013-05-29 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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)
Soft Magnetic Materials (AREA)
Manufacture Of Alloys Or Alloy Compounds (AREA)
Contacts (AREA)
Mechanical Operated Clutches (AREA)

EP93108730A 1992-06-02 1993-05-29 Alliage de laiton Expired - Lifetime EP0572959B1 (fr)

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 (de)	1992-06-02	1993-05-28	Messinglegierung

Publications (2)

Publication Number	Publication Date
EP0572959A1 true EP0572959A1 (fr)	1993-12-08
EP0572959B1 EP0572959B1 (fr)	1997-02-19

Family

ID=25915427

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93108730A Expired - Lifetime EP0572959B1 (fr)	1992-06-02	1993-05-29	Alliage de laiton

Country Status (4)

Country	Link
EP (1)	EP0572959B1 (fr)
AT (1)	ATE149042T1 (fr)
AU (1)	AU664092B2 (fr)
ES (1)	ES2099863T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2001014606A1 (fr) *	1999-08-26	2001-03-01	Tour & Andersson Hydronics Ab	Alliage de laiton de moulage sous pression resistant a la dezincification
WO2003046237A1 (fr) *	2001-11-27	2003-06-05	Rehau Ag + Co	Utilisation d'un alliage cuivre-zinc resistant a la corrosion pour produire des pieces façonnees destinees au domaine de l'eau potable
US7354489B2 (en)	2003-02-28	2008-04-08	Wieland-Werke Ag	Lead-free copper alloy and a method of manufacture
CN101451204B (zh) *	2008-12-15	2010-10-13	无锡吉泉五金机械有限公司	汽车空调用导向球及其制备方法
DE102013004081A1 (de) *	2013-03-11	2014-09-11	Hansa Metallwerke Ag	Sanitärer Armaturenkörper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2159482A1 (de) *	1971-12-01	1973-06-07	Schreiber Gmbh Carl	Verwendung einer gusslegierung aus sondermessing
WO1989008725A1 (fr) *	1988-03-16	1989-09-21	Tour & Andersson Ab	Alliage de laiton et procede de fabrication et utilisation d'un tel alliage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH540342A (de) *	1970-08-20	1973-08-15	Olof Manner Ab	Kupfer-Zinklegierung
FR2353648A1 (fr) *	1976-05-31	1977-12-30	Afica	Alliage de laiton biphase pour fonderie presentant des proprietes ameliorees de mise en oeuvre et une tres bonne resistance des pieces coulees a la dezincification

1993
- 1993-05-29 AT AT93108730T patent/ATE149042T1/de not_active IP Right Cessation
- 1993-05-29 EP EP93108730A patent/EP0572959B1/fr not_active Expired - Lifetime
- 1993-05-29 ES ES93108730T patent/ES2099863T3/es not_active Expired - Lifetime
- 1993-06-02 AU AU40004/93A patent/AU664092B2/en not_active Ceased

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2159482A1 (de) *	1971-12-01	1973-06-07	Schreiber Gmbh Carl	Verwendung einer gusslegierung aus sondermessing
WO1989008725A1 (fr) *	1988-03-16	1989-09-21	Tour & Andersson Ab	Alliage de laiton et procede de fabrication et utilisation d'un tel alliage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2001014606A1 (fr) *	1999-08-26	2001-03-01	Tour & Andersson Hydronics Ab	Alliage de laiton de moulage sous pression resistant a la dezincification
US6787101B1 (en)	1999-08-26	2004-09-07	Tour & Andersson Ab	Die-casting brass alloy which is resistant to dezincification
WO2003046237A1 (fr) *	2001-11-27	2003-06-05	Rehau Ag + Co	Utilisation d'un alliage cuivre-zinc resistant a la corrosion pour produire des pieces façonnees destinees au domaine de l'eau potable
US7354489B2 (en)	2003-02-28	2008-04-08	Wieland-Werke Ag	Lead-free copper alloy and a method of manufacture
CN101451204B (zh) *	2008-12-15	2010-10-13	无锡吉泉五金机械有限公司	汽车空调用导向球及其制备方法
DE102013004081A1 (de) *	2013-03-11	2014-09-11	Hansa Metallwerke Ag	Sanitärer Armaturenkörper
DE102013004081B4 (de)	2013-03-11	2023-06-07	Hansa Metallwerke Ag	Sanitärer Armaturenkörper

Also Published As

Publication number	Publication date
ES2099863T3 (es)	1997-06-01
AU664092B2 (en)	1995-11-02
AU4000493A (en)	1993-12-09
ATE149042T1 (de)	1997-03-15
EP0572959B1 (fr)	1997-02-19

Publication	Publication Date	Title
DE69828818T2 (de)	2006-01-05	Automatenlegierung auf kupferbasis
EP3225707B1 (fr)	2020-12-30	Composant pour des canalisations d'eau ou de gaz acheminant des milieux comprenant un alliage de cuivre
DE69506372T2 (de)	1999-05-06	Aluminiumlegierung zum druckgiessen und damit hergestelltes kugelgelenk
EP2964798B1 (fr)	2017-09-13	Alliage cuivre-zinc pour une robinetterie sanitaire, et procédé de fabrication de ladite robinetterie
DE69416512T2 (de)	1999-09-23	Gelbes reduziertes blei-wismut-messing
DE10301552B3 (de)	2004-06-24	Korrosionsbeständige Messinglegierung für Trinkwasserformteile
EP0642596B1 (fr)	1995-11-02	Alliage de laiton
DE60029260T2 (de)	2007-08-30	Automatenlegierung
EP1817438B1 (fr)	2008-10-01	Alliage de cuivre peu sensible aux migrations
EP0572959B1 (fr)	1997-02-19	Alliage de laiton
DE2728621A1 (de)	1978-01-05	Eisenwerkstoff fuer walzen, sowie damit hergestellte walze fuer warmwalzstrassen o.dgl.
DE4233668C2 (de)	1994-08-11	Korrosionsfeste Legierung auf Kupferbasis
EP3938552B1 (fr)	2025-07-30	Procédé pour produire des éléments métalliques et élément métallique produit au moyen de ce procédé
EP1273671A1 (fr)	2003-01-08	Alliage cuivre-zinc résistant à la dezincification et son procédé de fabrication
DE4318377C2 (de)	1994-04-28	Messinglegierung
DE60209590T2 (de)	2007-01-11	Automatenstahl
DE3828397A1 (de)	1989-03-09	Hochfeste, leicht giessbare zinklegierung
DE202007019373U1 (de)	2012-02-06	Verwendung einer Bronzelegierung für ein Schneckenzahnrad
EP1980633B1 (fr)	2011-09-07	Usage d'un alliage de cuivre pour un vis sans fin
WO1994024325A1 (fr)	1994-10-27	Alliage de laiton
DE102019107445A1 (de)	2019-10-02	Hochfeste und Hochverschleissfeste Aluminiumgusslegierung
DE69417421T2 (de)	1999-08-19	Hochfeste beryllium-kupfer-legierung mit guter bearbeitbarkeit und wärmebeständigkeit und deren herstellung
DE102018212942B4 (de)	2021-05-12	Verfahren zum Erzeugen einer Schmelze einer Kupfergusslegierung und Gussstück, hergestellt aus dieser Schmelze
EP3899073B1 (fr)	2022-04-27	Alliage cu-zn
AT276786B (de)	1969-12-10	Gleitwerkstoff und Verfahren zu seiner Herstellung

Legal Events

Date	Code	Title	Description
1993-10-22	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
1993-12-08	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
1994-02-23	RIN1	Information on inventor provided before grant (corrected)	Inventor name: MOEHNER, BERND Inventor name: STOOSS, JUERGEN Inventor name: WASCHKE, HELMUT
1994-03-02	RIN1	Information on inventor provided before grant (corrected)	Inventor name: MOEHNER, BERND Inventor name: STOSS, JUERGEN Inventor name: WASCHKE, HELMUT
1994-03-30	17P	Request for examination filed	Effective date: 19940125
1995-02-01	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: HANSA METALLWERKE AG Owner name: HETZEL METALLE GMBH
1996-01-24	17Q	First examination report despatched	Effective date: 19951207
1996-06-14	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1996-07-31	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-10-23	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1997-01-03	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1997-02-19	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
1997-02-19	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
1997-02-19	REF	Corresponds to:	Ref document number: 149042 Country of ref document: AT Date of ref document: 19970315 Kind code of ref document: T
1997-02-28	REG	Reference to a national code	Ref country code: CH Ref legal event code: EP
1997-03-27	REF	Corresponds to:	Ref document number: 59305476 Country of ref document: DE Date of ref document: 19970327
1997-04-30	REG	Reference to a national code	Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE
1997-05-07	REG	Reference to a national code	Ref country code: IE Ref legal event code: FG4D Free format text: 72114
1997-05-16	ITF	It: translation for a ep patent filed
1997-05-19	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: PT Effective date: 19970519
1997-05-28	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19970501
1997-05-29	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
1997-05-31	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
1997-06-01	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
1997-06-20	ET	Fr: translation filed
1997-08-01	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1997-11-30	BERE	Be: lapsed	Owner name: HANSA METALLWERKE A.G. Effective date: 19970531 Owner name: HETZEL METALLE G.M.B.H. Effective date: 19970531
1997-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: MC Effective date: 19971130
1997-12-24	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1997-12-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1998-02-11	26N	No opposition filed
2000-05-10	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
2000-05-17	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
2000-05-23	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
2000-05-24	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
2001-05-29	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
2001-05-30	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
2001-06-28	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
2002-01-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2002-01-16	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20010529
2002-01-31	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
2002-03-01	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
2003-04-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20030303
2005-05-29	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