摘要
运用二元合金杠杆定律 ,研究了纺织器材常用钢种的硬度值与热处理工艺的关系 ;研究表明 ,碳钢在完全退火、球化退火和正火状态下硬度的计算值与实际值相近 ,碳钢马氏体的硬度由板条马氏体和片状马氏体的硬度决定 ,含碳量在 0 .3 %～ 1 .0 %范围内存在一个由板条马氏体和片状马氏体混合而造成的附加硬度ΔHB ;高碳钢采用奥氏体成分不均匀化淬火 ,可以得到较多的未溶渗碳体和更高的硬度 ;低碳钢采用亚温 (Ac1 ～Ac3 )淬火 ,可以得到最高的硬度HBmax。
Appling two kind elements of alloy law,the relation of hardness and heat treatment with usual use carbon steel of textile accessories have been researched.The studies show that the calculated value of hardness is similar to the actual value of hardness when carbon steel is in the state of full annealing,spheroidized annealing and normalizing.It has been found that martensitic hardness in carbon steel is determined with the hardness of martensite lath and martensite plate,and there is secondary hardness ΔHB which is consisted of martensite lath and martensite plate when they are mixed in the range of 0.3%～1.0%C.High carbon steel will be gain a more amount of undissolved(remained) carbide and higher hardness when the steel is quenched with austenite of non homogeneous chemical composition.Low carbon steel will be gain the highest hardness HB max when the steel is quenched in range of sub critical temperature(Ac 1～Ac 3).
出处
《纺织器材》
2001年第4期203-207,共5页
Textile Accessories
