激光处理球铁正弦轮的显微结构  

On Microstructure of Nodular Cast Iron Sine Wheel with Laser Heat Treatment

作　　者：王慧萍[1] 戴建强[1] 张光钧[1] 奚文龙[1] 

机构地区：[1]上海工程技术大学激光工业技术研究所,上海201600

出　　处：《实验室研究与探索》2009年第2期20-22,共3页Research and Exploration In Laboratory

基　　金：上海市重点学科建设项目资助(J51402)

摘　　要：采用HL-5000型横流CO2激光加工机,对QT 600-3球墨铸铁电梯正弦轮进行了激光相变硬化处理。测量了淬硬层的性能,淬硬层的硬度可达到HV0.2904,硬化层深度约为0.85 mm,硬化层宽度约为11.0 mm,达到电梯正弦轮的技术要求。研究了QT 600-3球墨铸铁激光淬硬层从表至里石墨球周围的显微组织变化。The laser hardening was carried out for QT 600-3 nodular cast iron using 5.0 kW continuous wave CO_2 laser.The performance of hardened was tested.The microhardness of hardened reaches HV_(0.2)904,the hardened depth is approximately 0.85 mm,the hardened width is approximately 11.0 mm.The technology requirements of elevator sine wheel were reached.The microstructure s change around graphite in laser treated QT 600-3 nodular cast iron was researched.

关 键 词：球墨铸铁 激光相变硬化 显微组织 

分 类 号：TG163[金属学及工艺—热处理]