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    模具钢工艺表现在这3种

    来源:/ 日期:2021-12-02 发布人:admin


    1.锻造工艺Cr12模具钢属于莱迪格钢,铸态组织为鱼骨状共晶碳化物。同时,Cr12模具钢抗变形能力大,锻造吨位应与毛坯尺寸相适应。山东模具钢加热温度为1050~1100℃,初锻温度为100~1050℃,终锻温度为850~900℃,锻后采用炉冷或砂冷并及时退火。
    1. The forging process of CR12 die steel belongs to laidige steel, and the as-cast structure is fishbone eutectic carbide. At the same time, the CR12 die steel has high deformation resistance, so the forging tonnage should be suitable for the blank size. Shandong die steel heating temperature is 1050 ~ 1100 °C, initial forging temperature is 100 ~ 1050 °C, final forging temperature is 850 ~ 900 °C. 
    2.退火工艺锻造的毛坯内应力大,硬度高(477~653HB),切割难度大。为了内应力,提高切削性能,需要进行退火处理。Cr12模具钢一般采用等温球化退火工艺,加热温度830~850℃,保温时间2~3h,等温温度720~740℃,保温时间3~4h,退火硬度217~267HBS。
    2. The internal stress and hardness (477 ~ 653HB) of the blank forged by annealing process are high, and it is difficult to cut. In order to eliminate the internal stress and improve the cutting performance, annealing treatment is needed. The ISOTHERMAL spheroidizing annealing process is usually used for CR12 die steels. The heating temperature is 830ー850 °C, the holding time is 2ー3 h, the holding temperature is 720ー740 °c, the holding time is 3ー4 H, and the annealing hardness is 217ー267 hbs. 
    3.淬火和回火工艺为了保证Cr12钢模具的淬火质量,应非常注意防止模具表面在加热过程中脱碳和氧化。一次硬化法的淬火加热温度为960~980℃,淬火冷却可以是油冷、风冷或分级冷却,山东模具钢硬度为60~64HRC,回火可以在160~400℃进行,一次硬化法的淬火加热温度为1050 ~。
    3. Quenching and tempering process in order to ensure the quenching quality of CR12 steel die, care should be taken to prevent the surface of the die from decarburization and oxidation during heating. The quenching heating temperature of the first hardening method is 960 ~ 980 °c, the quenching cooling can be oil cooling, air cooling or grading cooling, the hardness of Shandong die steel is 60 ~ 64HRC, the tempering can be carried out at 160 ~ 400 °C, the quenching heating temperature of the first hardening method is 1050 ~ .
    淬火冷却可采用油冷、风冷或分级冷却,硬度为40~60HRC,工件必须在500~520℃回火数次(3~4次),钢的硬度会上升到60~63HRC。当Cr12模具钢制成的模具需要“翻新”时,可以采用高温回火处理来降低模具温度,以便于切割。此外,为了减少再淬火引起的热处理变形,对于淬火质量不合格需要再淬火的模具,也可以提前进行高温回火,但高温回火时应防止模具氧化脱碳。
    Quenching cooling can be oil cooling, air cooling or staged cooling, hardness of 40 ~ 60HRC, the workpiece must be tempered at 500 ~ 520 °C several times (3 ~ 4 times) , the hardness of steel will rise to 60 ~ 63HRC. When the mold made of CR12 die steel needs to be “Refurbished”, you can use high temperature tempering to reduce the mold temperature, in order to facilitate cutting. In addition, in order to reduce the distortion of heat treatment caused by requenching, high temperature tempering can be carried out in advance for the dies that need to be requenched if the quenching quality is not up to standard.
    Cr12模具钢的应用范围Cr12山东模具钢多用于制造冷却冲头、冷剪刃、钻套、量规、拉丝模、螺丝搓板、拉丝模、滚丝模等模具,承受冲击载荷小,要求耐磨性高。
    The application scope of CR12 die steel CR12 Shandong die steel is mainly used to manufacture the cooling punch, the cold cutting edge, the drill sleeve, the gauge, the drawing die, the screw Washboard, the drawing die, the rolling die and so on.

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