Canadian Plastics

Welder repairs molds “automatically”

The Moldmender Micro Welder, developed by Rocklin International Corp., repairs plastic injection molds, rubber processing molds and die casting molds and dies made of steel. Ideal applications are par...

June 1, 1999   Canadian Plastics



The Moldmender Micro Welder, developed by Rocklin International Corp., repairs plastic injection molds, rubber processing molds and die casting molds and dies made of steel. Ideal applications are parting lines, corners/edges, pin holes/scratches and machining errors. Repairs are accomplished by producing inter-linking spot welds to totally bond the repair material to the desired area of the work piece. The repair material used is normally the same material as the work piece, producing a fully hardened repair ready for finishing. Since the amount and location of the repair material can be precisely controlled, the minimal finishing that is required can easily be performed with any of the standard methods such as fringing, machining and plating.

Repairs are made by bonding a piece of 0.008 in. thick ferrous ribbon or wire to the desired areas on a steel work piece. The ribbon is bonded by pressing down firmly with the electrode, then triggering the machine either manually or automatically with a foot switch while slowly rolling the electrode across the repaired area. This produces a weld with the least amount of heat so shrink lines and other cosmetic defects are eliminated.

Some other features include adjustable weld time for most delicate jobs; rotary electrode holder for fast and convenient operation; and no fluxes, chemicals or shielding gasses for safety and ease of operation.

Rocklin International Corp.,

712/255-7957

(Circle 149 )


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