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对工具来说,硬度和韧性是很重要的;硬度高则磨损少,韧性高则不发生崩刃。但是,硬度和韧性是矛盾的、不能同时大幅度提高,只能通过相互调整,达到两者适当的配合。切削工具等的硬度目前以HRC60为目标,用回火方法来确保其耐磨性和韧性。以硬度为目标,由硬度(?)回火温度曲线图来决定回火温度,这是当前普遍应用的方法。但是,工具刀尖在进行切削时,由于摩擦热而使其温度上升。因此,必须以这个受热温
For tools, hardness and toughness are important; high hardness leads to less wear and tear, and higher toughness does not collapse. However, the hardness and toughness are contradictory and can not be greatly improved at the same time. Only through mutual adjustment can the proper cooperation be achieved between the two. The hardness of cutting tools, etc. Currently HRC60 as the goal, with the tempering method to ensure its wear resistance and toughness. To hardness as the goal, from the hardness (?) Tempering temperature curve to determine the tempering temperature, which is currently widely used method. However, when the tool nose is cut, its temperature increases due to frictional heat. Therefore, we must take this warm temperature