27SiMn钢导向套的淬火畸变规律  

Quenching distortion of 27SiMn steel guide sleeve

作　　者：刘敬平[1] 李向东[1] 黄鑫 张小卫[3] 

机构地区：[1]焦作大学机电工程学院,河南焦作454000 [2]上海品彦光电科技有限公司技术部,上海201314 [3]焦作煤业(集团)有限责任公司电冶分公司,河南焦作454000

出　　处：《金属热处理》2015年第7期186-188,共3页Heat Treatment of Metals

基　　金：河南省科技攻关项目(142102210267)

摘　　要：用透射电镜和千分尺研究了导向套淬火后的显微组织和淬火畸变规律。结果表明:27SiMn钢导向套在920℃水冷淬火后的显微组织是板条马氏体;导向套的内径和外径均出现涨大畸变,呈现较为明显的组织应力特征;运用该规律,可以在机械加工过程中对涨大的畸变量进行补偿,从而使淬火之后的零件尺寸符合技术要求。The microstructure and quenching distortion trend of guide sleeve were studied by TEM and micrometer. The results show that the microstructure of 27 Si Mn steel after 920 ℃ water quenching is lath martensite; the inner and outer diameter of the guide sleeve appear have the expanding trend,showing obvious feature due to the structure stress. Based on this rules,it can compensate the expansion value by the machining process. Thus the part size after quenching can meet the technical requirements.

关 键 词：导向套 27SIMN钢 淬火畸变 组织应力 

分 类 号：TG142.33[一般工业技术—材料科学与工程]