摘要
针对剪毛机刀片用钢存在的碳化物偏析，对比试验了传统工艺与“含氮马氏体化处理（ＮＭ处理）”的效果，指出氮的渗入可使渗层的Ａ＿１和Ａ＿（ｃｍ）降低，促使钢材表层碳化物溶解，在正常温度加热淬火，消除了表层碳化物疵病，得到高硬度、高韧性和耐磨的含氮马氏体表层，提高了剪毛机刀片寿命，并且节能效果显著。
ln this paper,in view of serious carbide segregatfonexisting in steel used to making blades of sheep shearing machine,the results of c omparison test between conventional process and“nitrogen-contained martensitizing treatment(N,M, treatment)”were presented and pointed out that the diffusion of nitrogenwould lower A_1 and Acm of the diffusion layer,enhancing thesolution of surface carbldes.Thus carbide segrcgation in surfacelayer can be removed by hardening heating at normal temperatureand afte hardening, nitrogen-contained martensitic surface layerof high hardness, high toughness and high wear resistance can beobtained,causing the service life of blades of shearing machineto be prolonged to a great extent,and the result of great energy-saving would be obtained.
出处
《兵器材料科学与工程》
CSCD
北大核心
1995年第2期51-57,共7页
Ordnance Material Science and Engineering
基金
国家自然科学基金
关键词
工具钢
碳化物偏析
含氮马氏体
热处理
钢
淬火
tool steel,carbide segregation, nitrogen-contained martensite,heat treatment saving energy
