V3N mold steel, what material is V3N, V3N

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齐全

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合理

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100%正品

Material Characteristics Steel, referred to as 3 steel, is a cobalt-free super-hard high-speed steel developed in China. It has the advantages of higher hardness and better wear resistance than ordinary high-speed steel, and can be used for cold work die steel with more severe working conditions. For workpieces smaller than the rough size, modules can be made without forging. It should be heated slowly, and attention should be paid to even and thorough burning. The heating time should be .~ times that of steel under the same conditions.
When forging, hammer lightly and quickly, and chamfer the edges frequently to prevent the temperature of the edges from dropping to ℃. When drawing out, do not hammer the same part again to prevent internal cross cracks due to excessive temperature rise. Large-size forgings should be annealed in time to prevent explosion.
Chemical composition
The typical chemical composition (mass fraction) of this steel:,.,.,3.,>.
Hot processing specifications
Heating temperature ~ ℃, starting temperature ~ ℃, end temperature ~ ℃, when it is higher than ℃, it will be buried in a hot ash pit and slowly cooled.
Softening annealing specifications
Annealing temperature is ~℃, insulation is reduced to ~℃ at a cooling rate of ~3℃/, and then furnace cooling or stack cooling is performed to determine the hardness.
Isothermal annealing specifications
Annealing temperature ~ ℃, cooling to ~ ℃ in the holding furnace, holding ~ and then furnace cooling to ~ ℃, air cooling out of the furnace, hardness B.
Quenching and tempering specifications
Preheating temperature ℃, holding time /, quenching temperature ~ ℃ (usually ~ ℃) holding time ~ /, oil cooling, tempering temperature: ~ ℃, tempering four Times, each time air cooling, hardness ~.
Typical application examples
Used for simple drill bits, ordinary milling cutters, forming milling cutters, broaches, gear cutters and thread cutters, etc.