W12Mo3Cr4V3Co5Si,Co5Si

规格：

齐全

价格：

合理

质量：

100%正品

Material properties The abbreviation code for steel is. High performance can be obtained by reducing cobalt and increasing silicon. Its wear resistance is better than steel, but its toughness is worse than steel. The disadvantage is that it still contains a certain amount of cobalt, and due to the increased tungsten content, the grindability becomes worse, so it is not suitable for making complex knife dies.
Chemical composition
The chemical composition (mass fraction) of the steel: ~.3,.~3.,.~3.,3.~.,.~3.,.~.,.,. 3, .3, ~..
Softening annealing specifications
Annealing temperature is ~℃, insulation is reduced to ~℃ at a cooling rate of ~3℃/, then furnace cooling or pile cooling, hardness B.
Isothermal annealing specifications
Annealing temperature ~ ℃, cooling to ~ ℃ in the holding furnace, holding ~ and then cooling to ~ ℃ in the furnace, air cooling out of the furnace, hardness B.
Quenching and tempering specifications
Preheating temperature ℃, holding time /, quenching temperature ~ ℃, holding time ~ /, oil cooling, tempering at ℃, tempering four times, air cooling each time, hardness.
Typical application examples
Used for simple drill bits, ordinary milling cutters, forming milling cutters, broaches, gear cutters, thread cutters, etc.