DE759340C - Tin-free solder - Google Patents
Tin-free solderInfo
- Publication number
- DE759340C DE759340C DES139464D DES0139464D DE759340C DE 759340 C DE759340 C DE 759340C DE S139464 D DES139464 D DE S139464D DE S0139464 D DES0139464 D DE S0139464D DE 759340 C DE759340 C DE 759340C
- Authority
- DE
- Germany
- Prior art keywords
- tin
- free solder
- soldering
- solder
- alloys
- 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
Links
Classifications
-
- 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)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
Zinnfreies Lot Es sind Lote bekannt, bei denen der Gehalt an Zinn, Wismut und Antimon gering ist, jedoch ist bei solchen: Loben die Bindungsfähigkeit an die Unterlagen vom Gehalt an Zinn: abhängig.Tin-free solder There are known solders in which the content of tin, Bismuth and antimony are low, but with such: Praise the ability to bind on the documents on the content of tin: dependent.
Die Erfindung sieht eine Lotzusammentsetzung gänzlich ohne Zinne vor und ergibt überraschenderweise eine vorzügliche Haftung auf allen bekannten: lötbaren Metallen. Das Lot setzt sich zusammen aus mindestens 80% Pb, mindestens zo% Cd, Rest Zn. Es hat sich hierbei gezeigt, da;ß die guten Eigenschaften des Lobes von dem Verhältnis von Cd und Zn abhängen. Es soll dieses Verhältnis. erfindungsgemäß 2o: z nicht übersteigen und 5 : r nicht unterschreiben. Dieses Lot hast den Vorteil, kein Zinn, Wismut oder Antimon zu enthalten. Die niedrigste Löttemperatur von, etwa 240°"C erzielt man mit einer Legierung der Zusammensetzung 82% Pb, 17% Cd'., 10/9 Zn. Soll am: Cd gespart werden, kann; das vorhandene Lot mit mehr Pb versetzt werden, so daß der Pb-Gehalt bis auf fast 9o % ansteigen kann. Für solche Legierungen liegen die Löttemperaturen entsprechend höher. Die F1ießbarkeit und Haftfestigkeit wird hierbei nicht verändlert. Es ist nur eine höhere Erwärmung des zu lötenden Gegenstands erforderlich.The invention provides a solder composition entirely without pinnacles and surprisingly results in excellent adhesion on all known: solderable Metals. The solder is composed of at least 80% Pb, at least zo% Cd, Remainder Zn. It has been shown here that the good properties of praise of depend on the ratio of Cd and Zn. It's supposed to be this ratio. according to the invention Do not exceed 2o: z and do not sign 5: r. This plumb bob has the advantage Containing no tin, bismuth or antimony. The lowest soldering temperature of, about 240 ° "C is achieved with an alloy with the composition 82% Pb, 17% Cd '., 10/9 Zn. Should be saved on: Cd, can; the existing solder is mixed with more Pb, so that the Pb content can rise to almost 90%. For such alloys lie the soldering temperatures are correspondingly higher. The flowability and adhesive strength will not changed here. It's just a higher heating of the object to be soldered necessary.
Bei normalen Metallen kann die Kolbenlötung mit Lötwasser oder Lötfett durchgeführt werden. Bei AI-Legierungen, z. B. einer Al-Zn-Legierung, erfolgt das Löten unter Zuhilfenahme von Laugen (Kali- oder Natronlauge).In the case of normal metals, the iron can be soldered with soldering water or soldering grease be performed. In the case of Al alloys, e.g. B. an Al-Zn alloy, this is done Soldering with the help of alkalis (potash or caustic soda).
Es ist zwar an sich bekannt, daß Pb-CdrZn-Legierungen als Lotmetalle geeignet sind. Die bekannten Legierungen mit go bis 9#4% Pb, io bis 6% Cd und zusätzlich o,5 bis io % Zn haben jedoch Löttemperaturen von 26o bis 300°C. Demgegenüber wird es erfindiungsgemäß erstmalig ermöglicht, durch Erhöhung des Cd-Gehaltes auf mindestens io% eine Erniedrigung der Löttemperatur auf beispielsweise nur 2400C zu erzielen.It is known per se that Pb-CdrZn alloys are used as solder metals are suitable. The known alloys with go up to 9 # 4% Pb, io up to 6% Cd and additionally However, 0.5 to 10% Zn have soldering temperatures of 26o to 300 ° C. In contrast, will it made possible according to the invention for the first time by increasing the Cd content to at least 10% to achieve a lowering of the soldering temperature to, for example, only 2400C.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES139464D DE759340C (en) | 1939-12-07 | 1939-12-07 | Tin-free solder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES139464D DE759340C (en) | 1939-12-07 | 1939-12-07 | Tin-free solder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE759340C true DE759340C (en) | 1954-01-25 |
Family
ID=7541105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES139464D Expired DE759340C (en) | 1939-12-07 | 1939-12-07 | Tin-free solder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE759340C (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1333619A (en) * | 1918-07-22 | 1920-03-16 | Westinghouse Electric & Mfg Co | Solder |
-
1939
- 1939-12-07 DE DES139464D patent/DE759340C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1333619A (en) * | 1918-07-22 | 1920-03-16 | Westinghouse Electric & Mfg Co | Solder |
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