Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse
Patent
1994-04-08
1995-08-29
Ramsey, Kenneth J.
Metal fusion bonding
Process
Repairing, restoring, or renewing product for reuse
228160, 409175, 2940218, B23P 600
Patent
active
054453070
ABSTRACT:
A method of correcting the partially worn die mounting surfaces of the stationary and the movable platen of a die casting machine is capable of correcting the partially worn die mounting surfaces through comparatively simple processes in a comparatively short time without dismounting the stationary and the movable platens from the die casting machine. The method comprises steps of padding welding areas including partially worn areas and areas surrounding the partially worn areas in the die mounting surfaces of the platens on the die casting machine by build-up welding, disposing a compact, portable face cutting machine near the platens, and cutting the padded areas by the face cutting machine to finish the die mounting surfaces of the platens in a desired flatness in the range of 1/100 to 1/10 mm. The build-up welding is carried out under welding conditions realizing a welding heat input of 15,000 J/cm or below to prevent inducing residual stress in the platens.
REFERENCES:
patent: 2914346 (1959-11-01), Ryder
patent: 3477341 (1969-11-01), Rickenbrode
patent: 4234275 (1980-11-01), Clement
patent: 4903888 (1990-02-01), Clark et al.
patent: 4958431 (1990-09-01), Clark et al.
Ramsey Kenneth J.
Tokushu Denkyoku Company Ltd.
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