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6CrW2Si 钢制冷剪刃,原最终热处理采用860～890℃油淬,然后根据硬度要求确定回火温度。长期以来,由于“堆刃”和“崩刃”,使这一产品处于使用寿命较低的水平(不如常州产品)。为此,通过各种奥氏体化温度对该钢强度、硬度、韧性及显微组织的影响的试验研究,得出了最佳奥氏体化温度(940～960℃)和适当的回火温度(350～370℃),使该钢获得了强韧化效果。按新工艺生产的6CrW2Si 钢冷剪刃,在鞍钢冷轧厂碎边剪上安装使用结果是:最高天数9天/刃,平均为7天/刃。而常州剪刃最高使用天数7天/刃,平均为5天/刃。这样,一举超过了常州剪刃的使用寿命。
6CrW2Si steel cold cutting edge, the original final heat treatment using 860 ~ 890 ℃ oil quenching, and then determine the tempering temperature according to the hardness requirements. For a long time, due to “heap edge” and “chipping”, so that the product is at a lower life expectancy (as Changzhou products). To this end, through the austenitizing temperature of the steel strength, hardness, toughness and microstructure experimental study, the best austenization temperature (940 ~ 960 ℃) and the appropriate tempering Temperature (350 ~ 370 ℃), so that the steel obtained toughening effect. According to the new production of 6CrW2Si cold steel cutting edge, cold rolled mill in Anshan Iron and steel scrap edged installation results are: the maximum number of days 9 days / blade, an average of 7 days / blade. The highest cutting edge Changzhou days 7 days / blade, an average of 5 days / blade. In this way, in one fell swoop Changzhou Scissor blade service life.