低碳结构钢激光熔覆铁基陶瓷合金粉末工艺研究  

Research of Fe-based Ceramic Alloy Powder on Low Carbon Steel by Laser Cladding

作　　者：陈革新[1] 王洪江[1] 赵华洋[2] 郑丽娟[1] 付宇明[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]内蒙古民族大学机械工程学院,内蒙古通辽028043

出　　处：《热加工工艺》2015年第4期174-177,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51105325);河北省自然科学基金资助项目(E2014203223);河北省高等学校科学技术研究重点项目(ZH2012022)

摘　　要：为提高Q345等低碳结构钢表面的耐腐蚀和耐磨性能,在Q345钢板表面熔覆316＋5%WC铁基陶瓷合金粉末,研究不同熔覆功率和光斑扫描速度对熔覆层宏观质量的影响;在其它熔覆工艺参数不变的情况下,分析了激光功率为2000~3500 W时,熔覆层的组织及硬度的变化规律,进而得出在Q345表面熔覆预置厚1.5 mm铁基陶瓷合金粉末的最佳工艺参数为功率3000 W、扫描速度300 mm/min。In order to improve the corrosion resistance and abrasion resistance of Q345 low carbon steel surface, the surface of the Q345 steel was clad by 316 ＋5% WC Fe-based ceramic alloy powder. The macro quality of cladding layer was studied under different cladding powers and spot scanning speeds. The microstructure and hardness change laws of cladding layer were analyzed in the laser power 2000W-3500 W when other cladding process parameters remain unchanged. The optimal technological parameters of 1.5 mm Fe-based ceramic alloy powder clad layer on Q345 steel are obtained： the power is 3000 W and scanning speed is 300 mm/min.

关 键 词：Q345 激光熔覆 铁基陶瓷合金粉末 工艺参数 

分 类 号：TG174.44[金属学及工艺—金属表面处理]