DE766009C - Tin-free and bismuth-free solder - Google Patents

Tin-free and bismuth-free solder

Info

Publication number
DE766009C
DE766009C DES140563D DES0140563D DE766009C DE 766009 C DE766009 C DE 766009C DE S140563 D DES140563 D DE S140563D DE S0140563 D DES0140563 D DE S0140563D DE 766009 C DE766009 C DE 766009C
Authority
DE
Germany
Prior art keywords
free
bismuth
tin
solder
free solder
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
DES140563D
Other languages
German (de)
Inventor
Goetz-Werner Dr Phil Kasten
Reinhold Reichmann
Guenther Dr Phil Ritzau
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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.)
Filing date
Publication date
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES140563D priority Critical patent/DE766009C/en
Application granted granted Critical
Publication of DE766009C publication Critical patent/DE766009C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/16—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step
    • H02P9/18—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step the switching being caused by a servomotor, measuring instrument, or relay
    • 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
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
    • B23K35/268—Pb as the principal constituent

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Description

Zinn- und wismutfreies Lot Das Patent 759 340 hat ein neues zinn- und wismutfreies Lot zum Gegenstand, das mindestens 8o °/o Blei, mindestens zö % Kadmium und Rest Zink enthält mit der Maßgabe, daß das Verhältnis von Kadmium zu Zink in den Grenzen von 2o: x und 5 : z liegt.Tin- and bismuth-free solder The patent 759 340 has a new tin- and bismuth-free solder for the object containing at least 8o% lead, at least 10% Contains cadmium and the remainder zinc with the proviso that the ratio of cadmium to Zinc lies within the limits of 2o: x and 5: z.

Bei der Herstellung oder Verarbeitung dieses Lotes hat sich nun gezeigt, daß es gegen die Anwesenheit von Antimon außerordentlich empfindlich ist. Hierbei kann das Antimon als Verunreinigung beispielsweise des Bleies auftreten oder es kann auch als Bestandteil des zu lötenden Materials vorhanden sein. In jedem Fall hat sich gezeigt, daß bei Anwesenheit auch der kleinsten Mengen von Antimon die Lotlegierung sofort autoxydiert und somit völlig unbrauchbar wird.During the production or processing of this solder it has now been shown that it is extremely sensitive to the presence of antimony. Here the antimony can occur as an impurity, for example of the lead, or it can also be present as part of the material to be soldered. In any case it has been shown that in the presence of even the smallest amounts of antimony the Solder alloy immediately auto-oxidizes and is therefore completely unusable.

Erfindungsgemäß wird nun ein weg gewiesen, um diese Autoxydation der Lotlegierung gemäß dem Patent 759 340 zu vermeiden. Hierzu wird vorgeschlagen, dem Lot zusätzlich o,11 bis 11o°." von einem oder mehreren Metallen der Alkalien, Erdalkalien oder von Cermischmetall hinzuzufügen.According to the invention, a way is now pointed out to this autoxidation of the Solder alloy according to patent 759 340 to avoid. This is done suggested the solder in addition o, 11 to 11o °. "of one or more metals of the alkalis, Add alkaline earths or cermet mixes.

Die überraschende Wirkung des erfindungsgemäßen Zusatzes dürfte darauf beruhen, daß nicht nur eine die Autoxy dation verhindernde Reduktion, sondern hierüber hinaus auch eine Abbindung und Überführung des Antimons in eine unschädliche Form stattfindet.The surprising effect of the additive according to the invention is likely to result are based on the fact that not only a reduction preventing autoxidation, but on this In addition, the antimony is bound and converted into a harmless form takes place.

Als besonders geeignete Zusätze wurden Aluminium, Magnesium, Calcium und Lithium gefunden. Es ist selbstverständlich, daß sich die Menge des notwendigen Zusatzes im Rahmen der oben angegebenen Grenzen von o,11 bis 11o 0.11, nach dem jeweilig vorhandenen und schädlichen Antimongehalt richten muß. Vorzugsweise soll der Zusatz etwa i bis 3 °ä`" ausmachen.Aluminum, magnesium and calcium were found to be particularly suitable additives and found lithium. It goes without saying that there is the amount of necessary Addition within the limits given above from o, 11 to 11o 0.11, after must judge the respective existing and harmful antimony content. Preferably should the addition make up about i to 3 ° ä` ".

Claims (1)

PATENTANSPRÜCHE: i. Zinn- und wismutfreies Lot aus mindestens 8o °;%a Blei, Rest Kadmium und Zink nach Patent 759 3,40, dadurch gekennzeichnet, daß dieses Lot zusätzlich o,11 bis 10 11', von einem oder mehreren der Metalle der Alkalien, Erdalkalien oder seltenen Erden enthält. z. Lot nach Anspruch i, gekennzeichnet durch einen Zusatz von o,11 bis 11o °;'" von einem oder mehreren der Metalle Aluminium, Magnesium, Calcium, Lithium.PATENT CLAIMS: i. Tin and bismuth-free solder consisting of at least 8o °;% a lead, cadmium and zinc rest according to Patent 759 3.40, characterized in that this additionally Lot o 11 to 10 11 ', of one or more of the metals of alkalis, alkaline earths or contains rare earths. z. Lot according to claim 1, characterized by the addition of 0.11 to 11o °; '"of one or more of the metals aluminum, magnesium, calcium, lithium.
DES140563D 1940-03-28 1940-03-28 Tin-free and bismuth-free solder Expired DE766009C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES140563D DE766009C (en) 1940-03-28 1940-03-28 Tin-free and bismuth-free solder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES140563D DE766009C (en) 1940-03-28 1940-03-28 Tin-free and bismuth-free solder

Publications (1)

Publication Number Publication Date
DE766009C true DE766009C (en) 1954-04-12

Family

ID=7541373

Family Applications (1)

Application Number Title Priority Date Filing Date
DES140563D Expired DE766009C (en) 1940-03-28 1940-03-28 Tin-free and bismuth-free solder

Country Status (1)

Country Link
DE (1) DE766009C (en)

Similar Documents

Publication Publication Date Title
DE766009C (en) Tin-free and bismuth-free solder
US1965012A (en) Precious metal alloy composition
DE764789C (en) Use of zinc alloys as a bearing material
DE663274C (en) Zinc injection molding alloys
DE2150102A1 (en) Aluminum alloy for anodes for galvanic baths
DE714505C (en) Zinc alloy
DE732318C (en) Gold solder
DE590686C (en) Letters made from lead alloys with addition of alkali and alkaline earth metals including magnesium
DE973431C (en) Master alloy for making spherulitic cast iron
DE678507C (en) Zinc alloy with low frictional resistance
DE382545C (en) Alloy of lead, zinc and antimony
DE1533364B1 (en) Mercury-containing aluminum alloy
DE732319C (en) Use of cadmium-lead alloys as solder
DE436876C (en) Process for the production of homogeneous lead or zinc alloys with tungsten
DE871368C (en) Lead-bearing metal
DE727651C (en) Solder for zinc alloys containing aluminum
DE301785C (en)
AT147775B (en) Copper alloys.
DE204543C (en)
AT160835B (en) Magnesium alloy.
DE337078C (en) Process for the production of practically aluminum-free metals and alloys from alloys containing aluminum
DE927417C (en) The use of raw lead to make cable sheaths
AT215163B (en) Cast or extruded flint based on cerium-mixed metal-iron
DE541159C (en) Extraction of tin from alloys containing tin
DE553662C (en) Process for the extraction of tin