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生产上对工具有各种性能要求,但基本的性能要求还是硬度(包括某些工具要求的红硬性),韧性,抗弯强度和耐磨性。一般地说,硬度越高耐磨性也越高。在脆断情况下,韧性越好,弯曲脆断强度(下简称抗弯强度)也越高。但是韧性和硬度之间却有较大矛盾,即硬度越高,韧性越差。对某些工模具来说,往往由于硬度过高,而韧性太差,造成工具崩刃、碎裂、折损。为了提高韧性,有时提高回火温
There are various performance requirements for tools in production, but the basic performance requirements are hardness (including red hardness required by some tools), toughness, flexural strength and wear resistance. In general, the higher the hardness, the higher the abrasion resistance. In the case of brittle fracture, the better the toughness, the higher the flexural brittle fracture strength (hereinafter referred to as flexural strength). However, there is a big conflict between toughness and hardness, that is, the higher the hardness, the worse the toughness. For some molds, often due to hardness is too high, and toughness is too poor, causing the tool to chipping, fragmentation, damage. In order to improve the toughness, and sometimes improve the tempering temperature