低碳钢淬火强化工艺在链传动行业的应用

Application of Quenching Strengthening Technology for Low-carbon Steel in Chain Transmission Industry

低碳钢淬火后可得到低碳马氏体组织,具有高强度和良好的塑韧性匹配以及低的冷脆转变温度,同时还有缺口敏感性和过载敏感度较低、断裂韧性高、耐磨性强等优点。为了获得低碳马氏体,必须注意低碳钢材料的选择、淬火加热温度、保温时间、冷却介质和回火等工艺参数,并且结合具体实例确定了低碳马氏体在链传动零件中实际应用的可行性。

Low-carbon martensite structure is obtained after quenching of low-carbon steel,which has high strength,good plasticity and toughness matching,low cold brittle transition temperature,as well as low notch sensitivity and overload sensitivity,high fracture toughness and wear resistance.In order to obtain low-carbon martensite,attention must be paid to the selection of low-carbon steel materials,quenching and heating temperature,holding time,cooling medium and tempering process parameters,etc.The feasibility of practical application of low-carbon martensite in chain transmission parts has been determined through specific examples.