公开(公告)号：JPH11257323A

公开(公告)日：1999-09-21

申请号：JP1268199

申请日：1999-01-21

Applicant: EMHART INC

Inventor： KUEHNL WALTER ,  MAUER DIETER ,  OPPER REINHOLD

IPC: F16B13/02 ,  B62D27/00 ,  B62D29/00 ,  F16B19/04 ,  F16B33/06

Abstract: PROBLEM TO BE SOLVED: To hold a stable condition under a specified high temperature by providing at least one coating including tin and zinc, and constituting the coating from mixing crystal of tin and zinc. SOLUTION: A parts 1 is a solid bolt, and is provided with a shaft 2 having a fastening part 4, and the fastening part 4 consists of a male screw 3. A head 5 is arranged adjacently to the shaft 2, a welding part 6 is arranged in an end part region which is far from the shaft 2, and the welding part 6 is provided with a conical welding surface 7. The parts 1 is provided with a coating 8 composed of mixing crystal of tin and zinc, the coating 8 is formed in the whole of parts, its thickness is set to 2 to 20 mm, especially, it may be set to about 8 mm. The coating 8 is stabilized at a high temperature, especially, at about 300 deg.C, and the other member is arranged on the fastening parts. As a result, heat treatment of this unit is made possible. Conductivity of the coating 8 is not completely influenced, or it is influenced in an inconspicuous degree, and the parts 1 is used on an electric contact part. Since the material of the coating 8 does not melt in a welding material of a fusing condition, it does not have the influence on the strength of the welding part.