HPP 220

PREMIUM TOOL STEEL              
ELECTRODE FOR REPAIR AND
HARD-FACING OF "HIGH SPEED" AND "HOT WORKING" STEELS

GENERAL CHARACTERISTICS
This electrode is specially formulated for use on high speed and hot working steels.  Tungsten, molybdenum and vanadium have been alloyed with other elements to produce a deposit that will maintain a sharp edge on high speed tools yet can withstand elevated temperatures that are normally encountered with these tools.  When applied to hot working tools, the deposit will retain its hardness and resistance to wear at high operating temperatures.


TYPICAL APPLICATIONS: 
Build-up and hard-facing of molding plates, mandrels, hot shears, reamers, turning and planning tools, drawing mandrels and dies, circle cutting tools, trimming plates, stencils, punches, cams, lathe tools, mill cutters and sliding surfaces.

Welding Parameters
Diameter3/32"1/8"
Amperage45-9080-120
CurrentAC or DC either polarity (electrode+ or -)

Technical Data:
Hardness as welded...58-62 RC
Hardness heat treated..63-65 RC
Hot Hardness...approx. 56 RC at 11000F (6000C)


Procedure:   Remove all foreign material from weld area.  When the base metal is tool steel, preheat part to 800-11000F (425-6000C); maintain this temperature during the entire welding operation.  No preheat is required when making deposits on low carbon steel but a minimum of 3 layers is necessary to overcome dilution.  Do not quench after welding, remove slag and reheat to 10000F (5400C), allow to cool slowly.  The deposit can then be ground to final dimension.

HPP 220 ALSO AVAILABLE IN:

Premium Tool Steel Mig  -- Flux Core      .045,   1/16,  7/64
Premium Tool Steel Mig  --  Metal Core      .045,   1/16