IT1095536B - Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft. - Google Patents
Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft.Info
- Publication number
- IT1095536B IT1095536B IT2378178A IT2378178A IT1095536B IT 1095536 B IT1095536 B IT 1095536B IT 2378178 A IT2378178 A IT 2378178A IT 2378178 A IT2378178 A IT 2378178A IT 1095536 B IT1095536 B IT 1095536B
- Authority
- IT
- Italy
- Prior art keywords
- electrodes
- pieces
- high thermal
- electrical conductivity
- coefft
- Prior art date
Links
- 239000002184 metal Substances 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 238000003466 welding Methods 0.000 title abstract 2
- 150000002739 metals Chemical class 0.000 title 1
- 238000005219 brazing Methods 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 abstract 1
Landscapes
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Metal pieces of high thermal and electrical conductivity are welded together using electrodes whose electrical resistance decreases as the temp. increases. The electrodes are resiliently pressed on to the pieces. The electrodes are heated by the Joule effect and the heat generated is transferred by conduction to the pieces. Used for joining together of Cu and Al tubes, e.g. as elements of a refrigeration circuit. Excellent weld quality is achieved using low cost, simple operation. The heat transmitted by the electrodes either melts the welding material or transforms the pieces to be welded into their plastic state. The electrodes may be movable towards the pieces to apply pressure during the joining operation. Brazing, other than torch brazing, can be used.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2378178A IT1095536B (en) | 1978-05-25 | 1978-05-25 | Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft. |
| EP79200251A EP0005880A1 (en) | 1978-05-25 | 1979-05-22 | Method of and apparatus for sealing tubes constructed of metals of high thermal and electrical conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2378178A IT1095536B (en) | 1978-05-25 | 1978-05-25 | Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7823781A0 IT7823781A0 (en) | 1978-05-25 |
| IT1095536B true IT1095536B (en) | 1985-08-10 |
Family
ID=11209927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2378178A IT1095536B (en) | 1978-05-25 | 1978-05-25 | Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft. |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1095536B (en) |
-
1978
- 1978-05-25 IT IT2378178A patent/IT1095536B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7823781A0 (en) | 1978-05-25 |
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