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Basic properties of tool materials

(1)金刚石刀具厂家介绍加工中心刀具高硬度。高速钢的硬度为63—70HRC,硬质合金的硬度为89—93HRA。HRC和HRA都属于洛氏硬度,HRA硬度一般用于高值范围(大于70)。HRC硬度值的有效范围是20-70。60—65HRC的硬度相当于81—83.6HRA和维氏硬度687-830HV。
(2)金刚石刀具厂家介绍加工中心刀具足够的强度和韧性。刀具切削部分的材料在切削时要承受很大的切削力和冲击力。抗弯强度反映刀具材料抗脆性断裂和抗崩刃的能力。
(3)金刚石刀具厂家介绍加工中心刀具高的耐磨性和耐热性。加工中心刀具材料的耐磨性是指抵抗磨损的能力。一般来说,刀具材料硬度越高,耐磨性也越好。刀具材料的耐磨性还和金相组织有关,金相组织中碳化物越多,颗粒越细,分布越均匀,其耐磨性也就越高。刀具材料的耐磨性和耐热性也有着密切的关系。耐热性通常用它在高温下保持较高硬度的性能来衡量,即高温硬度,或叫“红硬性”。
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