DE1006445B - The use of black malleable cast iron for objects to be welded - Google Patents
The use of black malleable cast iron for objects to be weldedInfo
- Publication number
- DE1006445B DE1006445B DEH22898A DEH0022898A DE1006445B DE 1006445 B DE1006445 B DE 1006445B DE H22898 A DEH22898 A DE H22898A DE H0022898 A DEH0022898 A DE H0022898A DE 1006445 B DE1006445 B DE 1006445B
- Authority
- DE
- Germany
- Prior art keywords
- nickel
- silicon
- black
- contents
- welded
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
Description
Die Verwendung von schwarzem Temperguß für zu schweißende Gegenstände Bekanntlich isst das Schweißen von Temperguß für konstruktive Aufgaben bis jetzt dem weißen Temperguß vorbehalten gewesen. Man hat dabei sowohl für die chemische Zusammensetzung des Gusses als auch für die Gefügeausbildung und Wanddicke bestimmte Voraussetzungen gefordert. Beim Schweißen von weißem Temperguß ist besonders dann., wenn dieser noch Temperkohle enthält, aufgefallen, daß durch die Schweißbehandlung der Werkstöff sowohl in der Schweiße als auch im Übergangsgefüge eine zementitische Rückkohlung erfährt. Von dem bis jetzt in der Praxis bekannten Schwarzguß weiß man, daß er für konstruktive Schweißungen oder solche, die einer Reparatur dienen, infolge der Erniedrigung der dynamischen Festigkeitseigenschaften und der Verschlechterung .der Bearbeitbarkeit nicht zugängig ist. Die chemische Zusammensetzung des bis heute bekannten Gusses genügt in keinem Fall den beim Schweißen üblichen Wärmebedingungen.The use of black malleable cast iron for objects to be welded As is well known, the welding of malleable cast iron for constructive tasks eats up to now reserved for white malleable cast iron. One has to do both for the chemical The composition of the casting as well as the structure and wall thickness Requirements required. When welding white malleable cast iron, the following is particularly important., if this still contains tempering carbon, it was noticed that due to the welding treatment the material is cementitic both in the weld and in the transitional structure Undergoes recarburization. From the black cast known up to now in practice we know that he is used for structural welds or those used for repairs as a result the lowering of the dynamic strength properties and the deterioration . the editability is not accessible. The chemical composition of the to date known casting does not in any case suffice for the heat conditions customary in welding.
Demgegenüber erlaubt die vorliegende Erfindung, Schwarzguß in allen Wanddicken nach den in der Praxis bekannten Verfahren der Schweißtechnik, vor allem für die konstruktive und Reparaturschweißung, zu verwenden.In contrast, the present invention allows black casting in all Wall thicknesses according to the welding technique known in practice, especially to be used for constructive and repair welding.
Für diese Schweißzwecke wird erfindungsgemäß ein Schwarzguß mit an sich bekannter Zusammensetzung verwendet, die etwa in folgendem Bereich liegt: 1,5 bis 3% Kohlenstoff, höchstens 0,6% Mangan, höchstens 0,1% Phosphor, höchstens 0,1% Schwefel. 0 bis 1% Silizium, 3 bis 0,5% Nickel, Rest Eisen.For these welding purposes, a black casting is used according to the invention known composition is used, which is approximately in the following range: 1.5 up to 3% carbon, maximum 0.6% manganese, maximum 0.1% phosphorus, maximum 0.1% Sulfur. 0 to 1% silicon, 3 to 0.5% nickel, the remainder iron.
Innerhalb der genannten Grenzen ist eine Abstimmung der Gehalte von Bedeutung, vor allem sollen den höheren Siliziumgehalten Gehalte an Nickel zugeordnet sein, die im unteren Teil des Nickelbereiches liegen, während umgekehrt niedrige Si,liziumgehalte mit hohen Nickelgehalten gekoppelt zum Erfolg führen. Die Größenordnung der zu koppelnden Gehalte soll vorzugsweise so sein, daß z. B. bei 1% Silizium 0,5 bis 1% Nickel, bei 0,5% Silizium 1 bis 2% Nickel und bei 0% Silizium 2 bis 3% Nickel vorliegen, bei entsprechendem Interpolieren für die Zwischenwerte.The contents of Significance, above all, should be assigned to the higher silicon contents of nickel which are in the lower part of the nickel range, while conversely low Si, licon contents coupled with high nickel contents lead to success. The order of magnitude the contents to be coupled should preferably be such that, for. B. with 1% silicon 0.5 up to 1% nickel, with 0.5% silicon 1 to 2% nickel and with 0% silicon 2 to 3% nickel exist, with appropriate interpolation for the intermediate values.
Das Nickel kann auch teilweise oder ganz durch Kupfer ersetzt sein. Das Verhältnis, in dem Nickel durch Kupfer ersetzt werden. soll, liegt zwischen 1 : 2 bis 1 :3. The nickel can also be partially or completely replaced by copper. The ratio in which nickel is replaced by copper. is between 1: 2 to 1 : 3.
Ein besonders günstiges Schweißverhalten zeigt sich, wenn in dem genannten Schwarzguß Kohlenstoffgehalte zwischen 2 und 2,5 % vorhanden sind. Bei solchem Kohlenstoffgehalt ist es günstig, einen Siliziumgehalt von etwa 0,50/9 und einen Nickelgehalt von etwa 1% zu wählen. Bei einem Ersatz dieses Nickels durch Kupfer wird vorzugsweise ein Ersatzverhältnis von 1 : 3 gewählt.A particularly favorable welding behavior is shown when in the aforementioned Black cast carbon contents between 2 and 2.5% are present. With such a carbon content it is favorable to have a silicon content of about 0.50 / 9 and a nickel content of to choose about 1%. If this nickel is replaced by copper, it is preferred a replacement ratio of 1: 3 was chosen.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH22898A DE1006445B (en) | 1955-02-05 | 1955-02-05 | The use of black malleable cast iron for objects to be welded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH22898A DE1006445B (en) | 1955-02-05 | 1955-02-05 | The use of black malleable cast iron for objects to be welded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1006445B true DE1006445B (en) | 1957-04-18 |
Family
ID=7149409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH22898A Pending DE1006445B (en) | 1955-02-05 | 1955-02-05 | The use of black malleable cast iron for objects to be welded |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1006445B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1211826A (en) * | 1916-04-03 | 1917-01-09 | Fred C T Daniels | Iron alloy. |
| DE541480C (en) * | 1928-12-21 | 1932-01-13 | Eugen Piwowarsky Dr Ing | Process for the production of malleable cast iron by heating a raw cast iron in which the silicon is partially replaced by nickel |
| CH222006A (en) * | 1939-11-20 | 1942-06-30 | Bergische Stahlindustrie | Process for the production of malleable castings, which in addition to high tensile strength values must have particularly high elongation values. |
-
1955
- 1955-02-05 DE DEH22898A patent/DE1006445B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1211826A (en) * | 1916-04-03 | 1917-01-09 | Fred C T Daniels | Iron alloy. |
| DE541480C (en) * | 1928-12-21 | 1932-01-13 | Eugen Piwowarsky Dr Ing | Process for the production of malleable cast iron by heating a raw cast iron in which the silicon is partially replaced by nickel |
| CH222006A (en) * | 1939-11-20 | 1942-06-30 | Bergische Stahlindustrie | Process for the production of malleable castings, which in addition to high tensile strength values must have particularly high elongation values. |
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