Resistance Wire Welding
| Resistance wire welding is the most economical means of attaching a contact to a carrier (blade or terminal). This technique does not require the separate manufacture of a contact rivet or weld tape. The wire welding process is also high speed when compared to riveting or tape welding. The limitations to this process is the requirement that the wire be made from a weldable alloy such as fine silver, coin silver, silver nickel, etc. Alloys such as silver cadmium oxide or silver tin oxide can not be wire welded since these materials are designed to resist welding.
Deringer has developed a very robust and high speed automated wire welding process that encompasses a strip take-off, a pilot press, a weld head and final stamping and forming of parts at very high speed. The finished parts can be either collected as discrete parts or wound onto reels of subsequent operations. In-line cleaning of parts is available when needed. The use of SPC and contact bond strength and integrity are verified during sampling on a real time basis. All of the advantages of tape welding are also available with wire welding with the added advantage of economy. Double contact welding (either on the same side or opposite sides of the blade or terminal) is very common in Deringer's process. Also, many materials are routinely used as blade and terminal material to meet customer needs or specifications. Deringer offers customer assistance in choosing the optimum contact and blade/terminal materials for their devices. Experience has proven that Deringer having early involvement in the design process pays dividends. |