HOT DIFFUSION WELDING - KOMATSU MFG CO LTD

Title:

HOT DIFFUSION WELDING

Document Type and Number:

WIPO Patent Application WO/1992/001528

Kind Code:

A1

Abstract:

A first member of copper alloy and a second member of another matrial are joined with an insert between them by hot diffusion welding with heat and pressure. The insert material is a copper plating formed on the joining surface of the second member to be joined, whereby the thermal conductivity on the joining surfaces between the two members is improved to effect electric resistance heating smoothly, so that continuous working is made possible without polishing for removing oxide from the electrically conductive surface of a pair of electrodes. Furthermore, when the insert material interposed between the joining surfaces of the both members as described above is of a normal brazing material, an even number of superposed bodies, each consisting of a first member, an insert material and a second member to be joined, are superposed on one another in such a manner that the respective first members are brought into abutting contact with each other, and subjected to electric resistance heating. In this case, the second member having a high thermal capacity is abutted against the pair of electrodes, whereby there is no need for polishing to remove oxide from the electric conductive surfaces of the pair of electrodes, so that the continuous working is made possible by hot diffusion welding method according to the present invention.

Inventors:

INOUE SHINICHIRO (JP)

Application Number:

PCT/JP1991/000976

Publication Date:

February 06, 1992

Filing Date:

July 23, 1991

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KOMATSU MFG CO LTD (JP)

International Classes:

B23K20/02; B23K35/00; (IPC1-7): B23K20/00

Foreign References:

JPS52103359A	1977-08-30
JPS5924592A	1984-02-08
JPS574433B2	1982-01-26
JPS5897485A	1983-06-09
JPS6453763A	1989-03-01

Other References: