The
machining and grinding characteristics of tungsten copper alloy are similar to those
of hard grey cast iron. Being nonporous, standard water soluble coolants may be
used if desired, but are not required. Each machine shop usually has its
individual machining or grinding practice and, therefore, the information
presented should be considered as a guide only.
Tool:
Carb alloy, grade 883 or equivalent. Grind tools with 0 deg. rake, 8-12 deg.
clearance, and .010" to .025" nose radius. The nose radius can
increase with the size of the work. For fine finish, stone small flat on tool
parallel to work. Suggest resting stone on work when honing tool.
Turning & Boring: Roughing, approximately .030" deep and .020" per revolution feed. Finishing, .002" to.005" depth of cut and .001" to .002" per revolution feed. Turning speed, 300-500 surface feet per minute. Do not use lubricant or coolant.
Turning & Boring: Roughing, approximately .030" deep and .020" per revolution feed. Finishing, .002" to.005" depth of cut and .001" to .002" per revolution feed. Turning speed, 300-500 surface feet per minute. Do not use lubricant or coolant.
Shaping:
Tool Speed: 43" per minute for Tungsten Copper 25% alloy.
Depth
of Cut: .030"
Feed:
.020" per stroke
Milling:
Drilling High Speed steel drills and taps may be used.
Through
Tapping: Holes are recommended. Material must be firmly held. Hand
feed-lubricant and cutting oil acceptable.
Rough
Grinding: is best done with 80 grit resin bonded wheels of medium hardness;
.015" per pass on Tungsten Copper 25% alloy.
Use
water or water soluble oil coolant.
Joining:
Material may be silver brazed, or copper brazed in a hydrogen atmosphere.
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