Year1
- 规格：
- 齐全
- 价格：
- 合理
- 质量：
- 保证
Material characteristics
This steel has good hot and cold processing properties, high thermal strength and good cold and hot fatigue resistance. This steel has good wear resistance and hardenability, and has certain impact resistance.
Due to the high working temperature of copper alloy die-casting molds, 3 high alloy hot work mold steel is used, with a heat treatment hardness of about 10%. In order to improve the corrosion resistance of the mold, the mold can be nitrided.
In order to reduce the wear of the mold and avoid overheating of the mold during use, proper lubrication and water cooling are effective measures to increase the service life of the mold. In order to reduce the thermal fatigue damage of the mold, this alloy mold steel mainly composed of chromium and molybdenum is more suitable for forced cooling by water spray during use.
Chemical composition
According to standard B/~, the chemical composition (mass fraction) of this steel: 3~.,.~.,.,.~3.3,.~3.,.~.,. ~.．
Hot processing specifications
) Steel ingot: heating temperature ~ ℃, starting temperature ~ ℃, end temperature ℃, slow cooling (sand cooling or pit cooling).
) Steel billet: heating temperature ~ ℃, starting temperature ~ ℃, end temperature ℃, slow cooling (sand cooling or pit cooling).
Specifications for isothermal annealing after forging
Annealing temperature ℃, heat preservation and furnace cooling to 3 ℃, heat preservation and furnace cooling to ℃, air cooling out of the furnace, hardness B.
Quenching specifications
Quenching temperature ~3℃, cooling in ~℃ oil, hardness ~.
Heat treatment of precision molds
Preheat at ℃, preheat twice when it rises to ℃, heat when it rises to ℃, quench the oil to about ℃, air-cool the oil, and air-cool and temper once at ℃.
Typical application examples
) Used in copper alloy die-casting molds.
) It can produce hot work dies, such as heading dies, precision forging dies, roll forging dies, press dies, etc.
3) The heat treatment specifications of precision molds can also be used for precision forging gear molds.
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