DE819458C - Alloy for the production of welding electrodes for resistance welding - Google Patents

Alloy for the production of welding electrodes for resistance welding

Info

Publication number
DE819458C
DE819458C DED84A DED0000084A DE819458C DE 819458 C DE819458 C DE 819458C DE D84 A DED84 A DE D84A DE D0000084 A DED0000084 A DE D0000084A DE 819458 C DE819458 C DE 819458C
Authority
DE
Germany
Prior art keywords
welding
electrodes
production
alloy
copper
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.)
Expired
Application number
DED84A
Other languages
German (de)
Inventor
Eugen Dr-Ing Duerrwaechter
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DED84A priority Critical patent/DE819458C/en
Application granted granted Critical
Publication of DE819458C publication Critical patent/DE819458C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/222—Non-consumable electrodes

Description

Legierung zur Herstellung von Schweißelektroden für Widerstandsschweißung Die Erfindung bezieht sich auf eine Legierung zur Herstellung von Schweißelektroden für Widerstandsschweißung.Alloy for the manufacture of welding electrodes for resistance welding The invention relates to an alloy for the production of welding electrodes for resistance welding.

Von einer Schweißelektrode wird neben einer guten elektrischen Leitfähigkeit und Oxydationsbeständigkeit eine geringe Klebneigung verlangt. Für manche "Zwecke ist weiterhin eine große Härte der Elektrode erwünscht.A welding electrode also has good electrical conductivity and oxidation resistance requires a low tendency to stick. For some "purposes a high hardness of the electrode is also desired.

Das früher für diese Zwecke benutzte Reinkupfer wird deshalb nur noch selten verwendet.The pure copper previously used for this purpose is therefore only used rarely used.

Zahlreiche Legierungen des Kupfers, insbesondere mit Zusätzen von Nickel, Kobalt und Mangan, wurden zur Verbesserung der Eigenschaften des Kupfers als Schweißelektrode vorgeschlagen. Sie zeigen zwar eine größere Härte wie Kupfer, doch ihre Leitfähigkeit ist wesentlich schlechter, wodurch sich der Stromverbrauch wesentlich erhöht.Numerous alloys of copper, especially with additions of Nickel, cobalt and manganese have been used to improve the properties of copper proposed as a welding electrode. Although they show a greater hardness than copper, but their conductivity is much worse, which increases the power consumption significantly increased.

Es sind auch Elektroden bekannt, die nach einem pulvermetallurgischen Verfahren aus mehreren Stoffen hergestellt werden, vornehmlich aus Kupfer und den Schwermetallen, z. B. Wolfram, Molybdän und Tantal und mit geringen Zusätzen von Nickel, Eisen oder Kobalt. Solche Elektroden zeigen zwar gegenüber den durch einen Schmelzvorgang hergestellten Elektroden eine größere IIärte und einen geringeren Verschleiß. Sie sind jedoch teuer und können nur durch Schleifwerkzeuge in die gewünschten Formen gebracht werden.There are also electrodes known that after a powder metallurgical Processes are made from several substances, primarily from copper and the Heavy metals, e.g. B. tungsten, molybdenum and tantalum and with small additions of Nickel, iron or cobalt. Such electrodes show against the by one Melting process produced electrodes have a greater I hardness and a lower Wear and tear. However, they are expensive and can only be achieved by grinding tools in the desired shapes are brought.

Überraschenderweise hat es sich nun gezeigt, daß auf pulvermetallurgischem Wege hergestellte Sinterkörper aus Kupfer mit einem Zusatz von Zinnoxyd vorzügliche Eigenschaften als Elektroden für Widerstapdsschweißungen aufweisen. Sie zeigen eine für viele Zwecke genügende Härte, eine sehr gute elektrische Leitfähigkeit und keinerlei Schweißneigung.Surprisingly, it has now been shown that on powder metallurgy Sintered bodies made of copper with an addition of tin oxide are excellent Have properties as electrodes for resistance welding. They show one Sufficient hardness for many purposes, very good electrical conductivity and none at all Tendency to perspire.

Die Schweißelektroden der Erfindung enthalten z. B. zwischen 0,3 und 15 °>o Zinnoxyd, Rest Kupfer. Das Kupfer kann bis zu 15 °Jo durch Nickel oder Kobalt bzw. eine Mischung dieser beiden Metalle ersetzt werden. Weiterhin können die Schweißelektroden noch bis zu 5 % Silber enthalten.The welding electrodes of the invention contain e.g. B. between 0.3 and 15 °> o tin oxide, the remainder copper. Up to 15 ° Jo the copper can be replaced by nickel or cobalt or a mixture of these two metals. The welding electrodes can also contain up to 5% silver.

Die Herstellung der Elektroden erfolgt nach bekannten pulvermetallurgischen Verfahren durch Mischen des pulverförmigen Kupfers mit dem ebenfalls pulverförmigen Zinnoxyd bzw. mit den Pulvern von Nickel, Kobalt und Silber, Pressen der Pulvermischungen und gleichzeitigem oder anschließendem Sintern in einer inerten Gasatmosphäre, vorzugsweise in einer Stickstoffatmosphäre.The electrodes are manufactured according to known powder metallurgy methods Process by mixing the powdery copper with the powdery copper Tin oxide or with the powders of nickel, cobalt and silver, pressing the powder mixtures and simultaneous or subsequent sintering in an inert gas atmosphere, preferably in a nitrogen atmosphere.

Die Sintertemperatur soll looo° C nicht überschreiten und liegt vorzugsweise zwischen 86o° und 900° C.The sintering temperature should not exceed 100 ° C. and is preferably between 86o ° and 900 ° C.

Nach erfolgter Sinterung erfolgt die Weiterverarbeitung zu den gewünschten Elektrodenkörpern durch Walzen oder Hämmern.After the sintering has taken place, it is further processed into the desired ones Electrode bodies by rolling or hammering.

Die Härte der so hergestellten Schweißelektroden liegt je nach ihrer Zusammensetzung zwischen 120 und 26o Brinell. Die Elektroden zeigen infolge der zwischen dem Kupfer eingelagerten Zinnoxydteile eine ausgesprochene Faserstruktur. Sie eignen sich gleich gut zum Schweißen von Eisen und Nichteisenmetallen. Folgende Zusammensetzungen haben sich bewährt: The hardness of the welding electrodes produced in this way is between 120 and 26o Brinell, depending on their composition. As a result of the tin oxide parts embedded between the copper, the electrodes show a pronounced fiber structure. They are equally suitable for welding iron and non-ferrous metals. The following compositions have proven themselves:

Claims (5)

PATENTANSPRÜCHE: 1. Legierung zur Herstellung von Schweißelektroden zur Widerstandsschweißung, dadurch gekennzeichnet, daß sie aus 0,3 bis 15 oJo Zinnoxyd, Rest Kupfer, besteht. PATENT CLAIMS: 1. Alloy for the production of welding electrodes for resistance welding, characterized in that it consists of 0.3 to 15 oJ tin oxide, the remainder being copper. 2. Legierung gemäß Anspruch i, dadurch gekennzeichnet, daß bis zu i_5 % des Kupfers durch Nickel und/oder Kobalt ersetzt sind. 2. Alloy according to claim i, characterized in that that up to i_5% of the copper is replaced by nickel and / or cobalt. 3. Legierung nach Anspruch t oder 2, dadurch gekennzeichnet, daß sie noch bis zu 5 Jo Silber enthält. 3. Alloy according to claim t or 2, characterized in that they still have up to 5 Jo silver contains. 4. Verfahren zur Herstellung von Elektroden aus Legierungen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Herstellung nach einem pulvermetallurgischen Verfahren durchgeführt wird. 4. Process for the production of electrodes from alloys according to a of the preceding claims, characterized in that the production according to one powder metallurgical process is carried out. 5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die pulverförmigen Ausgangsstoffe bei Temperaturen unter looo° C, vorzugsweise zwischen 86o° und goo°, gesintert werden. Angezogene Druckschriften: Deutsche Patentschriften N r. 436 678, 474 380, 637 547, 638 469.5. The method according to claim 4, characterized in that the powdery starting materials are sintered at temperatures below 100 ° C, preferably between 86o ° and goo °. Attached publications: German Patent Specifications N o. 436 678, 474 380, 637 547, 638 469.
DED84A 1949-10-20 1949-10-20 Alloy for the production of welding electrodes for resistance welding Expired DE819458C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED84A DE819458C (en) 1949-10-20 1949-10-20 Alloy for the production of welding electrodes for resistance welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED84A DE819458C (en) 1949-10-20 1949-10-20 Alloy for the production of welding electrodes for resistance welding

Publications (1)

Publication Number Publication Date
DE819458C true DE819458C (en) 1951-10-31

Family

ID=7028529

Family Applications (1)

Application Number Title Priority Date Filing Date
DED84A Expired DE819458C (en) 1949-10-20 1949-10-20 Alloy for the production of welding electrodes for resistance welding

Country Status (1)

Country Link
DE (1) DE819458C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144959A2 (en) * 1983-12-13 1985-06-19 Scm Metal Products Inc. Powdered metal composite

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE436678C (en) * 1924-07-30 1926-11-06 Allg Elek Citaets Ges Fa Electrode for electrical point and seam welding machines
DE474380C (en) * 1927-05-07 1929-04-04 Aeg Electrodes for electrical point, roller or butt welding machines
DE637547C (en) * 1933-08-31 1936-10-30 Aeg Pressure and wear-resistant electrode, especially for electrical resistance welding
DE638469C (en) * 1930-08-01 1936-11-16 Aeg Use of copper alloys for the production of objects with high electrical conductivity, mechanical strength and high heat resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE436678C (en) * 1924-07-30 1926-11-06 Allg Elek Citaets Ges Fa Electrode for electrical point and seam welding machines
DE474380C (en) * 1927-05-07 1929-04-04 Aeg Electrodes for electrical point, roller or butt welding machines
DE638469C (en) * 1930-08-01 1936-11-16 Aeg Use of copper alloys for the production of objects with high electrical conductivity, mechanical strength and high heat resistance
DE637547C (en) * 1933-08-31 1936-10-30 Aeg Pressure and wear-resistant electrode, especially for electrical resistance welding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144959A2 (en) * 1983-12-13 1985-06-19 Scm Metal Products Inc. Powdered metal composite
EP0144959A3 (en) * 1983-12-13 1986-08-27 Scm Corporation Powdered metal composite

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