| 摘要 |
PURPOSE: To simplify a manufacturing process and enhance the quality of a composite contact by sealing and holding a pat formed by massing treatment of metal powder between a recess of a contact member and a recess of an electrode of a resistance welding machine, and passing required current through the pad to form a massive material. CONSTITUTION: A pad 28 is formed by massing treatment of powder consisting mainly of metal. A recess 18 for placing the pad 28 to which preliminary compression is applied is formed in the required position of a contact member 10 having the specified shape. The pad 28 is filled in the recess 18, and a sealing part with high sealing capability is formed by co-operation with a recess 45 formed in an upper electrode 42 of a resistance welding machine. The required current is passed between the upper electrode 42 and a lower electrode 44 to form and sinter the pad 28, the pad 28 is strongly compressed by the volume shrinkage action of the recess 18, and thereby, a composite contact member comprising the contact material 10 and the pad 46 is obtained. The quality of the composite contact is thus enhanced. |
