Industrial/Automotive
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Composite Weld Contacts Deringer composite weld contacts offer the economy of using precious metals for the contact facing plus the following advantages: a strong, permanent bond; low electrical resistance; dependable operation at high temperatures; and the ability to with stand sever arcing. This type of composite weld contact is made by metallurgically fusing fine silver or a silver alloy facing directly to a base metal backing. Fusing or puddling provides a positive bond, eliminates any intermediate bonding material and problems caused by use of any bonding material, and eliminates high resistance because of a loose contact. Fused contacts can be coined to provide a smoother, dense, hard, wear-resistant precious metal contact face with improved dimensional accuracy to the radius desired. Nickel-plating the steel backing reduces the possibility of corrosion. In yet another method of manufacturing, the silver or silver alloy facing is brazed to steel or some other base metal backing. Then, as in fusing, the composite contact can be coined to harden the precious metal facing, and aid in forming a dimensionally accurate steel welding projection. This facilitates automatic feeding and the accurate welding of the composite weld contact directly to blade or bracket. While each method of manufacturing composite weld contacts has certain advantages, the optimum contact is a compromise between the plus factors of various materials, dimensions, manufacturing processes and the electrical and performance requirements of each application. Deringer engineers will be glad to work with you in determining which particular contact, size, materials and method of manufacture will be most economical for you while meeting or exceeding your performance requirements. 
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