45钢表面激光熔覆316不锈钢涂层的工艺参数对熔覆层车削性能的影响  

Influence of Laser Cladding Parameters on Turning Performance of Laser-Cladded 316 Stainless Steel Coating on 45 Steel Surface

作　　者：王胜[1] 郑志谊 周明安[1] 刘文军[1] 张恩铭 Wang Sheng;Zheng Zhiyi;Zhou Ming’an;Liu Wenjun;Zhang Enming(Mechanical and Electrical Engineering,Quzhou College of Technology,Quzhou,Zhejiang 324000,China;College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,Zhejiang 310027,China)

机构地区：[1]衢州职业技术学院机电工程学院,浙江衢州324000 [2]浙江工业大学机械工程学院,浙江杭州310027

出　　处：《激光与光电子学进展》2021年第21期206-213,共8页Laser & Optoelectronics Progress

基　　金：浙江省基础公益研究计划(LGC21E050002);衢州市科技计划(2020K17);浙江省教育厅一般科研项目(Y202044634);国家自然科学基金(51605252)。

摘　　要：以液压立柱材料45钢为基体,316不锈钢粉末为熔覆材料,采用不同的工艺参数在基材表面进行激光熔覆试验,制备316不锈钢涂层;然后利用FANUC数控机床对不锈钢涂层进行车削加工,采用数字化测试技术对车削成形试样熔覆层的表面宏观形貌、切屑形态、表面粗糙度、圆柱度、洛氏硬度、显微组织等进行研究,综合分析45钢表面激光熔覆316不锈钢涂层的车削加工性能,优选出最佳的激光熔覆工艺参数。在激光功率为800 W、送粉速率为0.28 g/s、轴向进给速度为0.110 mm/s的最佳熔覆工艺参数下,熔覆层的表面宏观形貌和切屑形态最佳,车削后熔覆层的表面粗糙度最小,圆柱度最高,且熔覆层的硬度值可达到40.3 HRC,内部显微组织呈细化趋势。45钢表面激光熔覆316不锈钢涂层耦合车削加工技术为液压立柱材料45钢的高质量修复和再利用提供了重要的参考价值。Using the hydraulic column material 45 steel as the substrate and 316 stainless steel cladding powder as the cladding material,we performed laser cladding experiments on the substrate surface to fabricate the 316 stainless steel coating under various process parameters.Then,we used a FANUC CNC machine to complete the turning of the cladding layer and study its macro morphology,chip morphology,surface roughness,cylindricity,Rockwell hardness,and microstructure after turning using digital testing technology.The turning performance of the laser cladding layer on a 45 steel surface was thoroughly analyzed to select the best laser cladding parameters.When the laser power is 800 W,the powder feeding rate is 0.28 g/s,and the axial feed rate is 0.110 mm/s.The cladding layer’s macro morphology and turning chip morphology are the best,and the turned surface has the lowest surface roughness and the best cylindricity.The cladding layer’s hardness can reach 40.3 HRC,and the internal metallographic structure shows a trend of refinement.The new technology of laser cladding the 316 stainless steel cladding layer on the surface of 45 steel coupled with turning processing can provide an important reference for the high-quality repair and reuse of hydraulic column material 45 steel.

关 键 词：激光加工 316不锈钢粉末 激光熔覆 精车加工 数字化测试 洛氏硬度 表面质量 

分 类 号：TG162.71[金属学及工艺—热处理] TG666[金属学及工艺—金属学]