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Weld Mold® 959


Weld Mold 959 produces hot working weld deposits that are tungsten-free, homogeneous, porous-free, dense, and may be annealed and rehardened, if necessary. Matches A.I.S.I. H-13 tool steel heat treatment.

Applications

Primarily designed for use on tools and dies subject to heat checking and wear. Examples include: die casting dies used in the aluminum, magnesium, and zinc die casting industries as well as for repair of press forging dies and inserts. May be used on other hot or cold working units such as shears, punches, trim sections, etc.

Procedure

For repairs, prepare area to be welded by removing all cracks, heat checks or other defects. Clean area of any slag, scale, rust or drawing compounds. Preheat die blocks and other units where the entire working surface is to be welded to 800º F. On other alloys preheat and post-heat according to the base metal. Maintain temperature during welding. Use the stringer bead technique. Peen the weld when forgeable to relieve stresses. After welding, cool in still air to 300º F to obtain the ultimate grain refinement and uniform hardness in the weld deposit. Temper at 1000º F for one hour per inch of thickness. Cool in still air to room temperature.

SMAW - DC+
GMAW - DC+ 92% Ar 8% CO2 or 100%Ar
GTAW - DC- 100%Ar
FCAW - DC+, 100% CO2 or 75% Ar 25% CO2

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