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Articles -> Specific wearing aspects of hard alloy plates
Specific wearing aspects of hard alloy plates

 

Wear pattern

Cause

Elimination

defect1
Spalling of alloy small particles out of a cutting edge leads to deterioration of a machined surface and excessive wear of a plate clearance surface.
1. Too brittle mark of a hard alloy.
2. Plate geometry doesn't provide sufficient durability.
3. Erosion scabbing
.
1. Choose a more viscous hard alloy mark.
2. Choose a plate geometry which provides more high durability.
3. Increase the cutting speed or choose a plate with positive goemetry.
4.Low feed at the initial inclusion stage
defect2Excessive hole-building leading to reduction of a cutting edge. 1. Diffused deterioration because of too high temperature on a cutting face of a cutter blade. 1.Choose a cutting plate with positive goemetry.
2. Low the cutting speed .
defect4
Plate breakage.
1. Too brittle mark of a hard alloy.
2. Excess load on a cutting plate.
3. Plate geometry doesn't provide sufficient durability.
4. Too small sizes of a plate.
1. Choose a more firm mark.
2. Diminish feed and/or cutting depth.
3. Choose geometry providing higher durability of a plate.
4. Choose a more thick plate.
defect5 Area 1: Causes deterioration of a machined surface or a spillover dimensional tolerance.
Area 2: Appearance of deep excavations on a clearance surface causing deterioration and generating a breakage risk.
 
1.Too high cutting speed or inadequate wearing of a hard alloy.
2. Corrosion
1. Low the cutting speed.
2. Choose a more wear-resisting mark of a hard alloy.
3. For materials which experience wear hardening while manufacturing process, choose a smaller angle in a plan or a more wear-resistant mark of a hard alloy.
.
defect6
Small chaps perpendicular a cutting edge lead to its chipping and dimention of .
Thermal cracks because of a high temperature vibration, caused by intermitted cutting or variability of cutting emulsion supply. 1.Choose a more durable mark of a hard alloy. It is better to choose the mark resisting a high temperature vibration.
2. Rich cutting emulsion of its complete absense.
defect3
Scabbing declining quality of a machined surface and leading to chipping of a cutting edge during scabstripping.
1. Low cutting speed.
2. The absense of an end-clearance angle of a plate point.
3. "Sticking" of material, for example, some unstainable.
1. Increase the cutting speed or choose a more durable plate.
2. Choose a plate with an end-clearance angle.
3.Vital increase of the cutting speed .
4. If a period of tool durability appears too short, apply a lot of cutting emulsion.
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