氧乙炔堆焊与感应熔覆制备的Co119合金涂层的组织性能比较  

Comparison of Microstructure and Properties of Co119 Alloy Coating Prepared by Oxyacetylene Surfacing and Induction Cladding

作　　者：时海芳[1] 王红蕾 SHI Hai-fang;WANG Hong-lei(College of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《材料保护》2021年第8期158-161,176,共5页Materials Protection

摘　　要：为了改善钻头牙轮牙爪在生产过程中的环境条件以及其止推面上耐磨涂层的性能,可以使用感应熔覆的方法代替传统的氧乙炔堆焊制备耐磨涂层,以此增加牙轮钻头的使用寿命,目前此类研究较少。使用HR-BP-120型感应加热设备、HRC-150洛氏硬度计、倒置显微镜、ML-10型磨料磨损试验机等设备,对比了2种涂层的硬度、显微组织及耐磨性能。结果表明:同氧乙炔堆焊相比,制备相同成分的合金涂层,感应熔覆同样可以使涂层有完全的冶金结合,在此基础上其硬度值波动小,比氧乙炔堆焊硬度提高了3.8 HRC,可达61.8 HRC,组织也更加细小均匀,耐磨性能提高了28.8%,同时感应熔覆的方法更为清洁。In order to improve the environmental conditions during the bit conesand jaws’production and the performance of the wear-resistant coating on the thrust surface,induction cladding could be used to replace the traditionally produced oxyacetylene surfacing to prepare the wear-resistant coating to increase the service life of roller cone bits.However,there are few such studies presently.Using HR-BP-120 induction heating equipment,HRC-150 Rockwell hardness tester,inverted microscope,and ML-10 abrasive wear testing machine,hardness,microstructure and wear resistance of the two coatings were compared.Result showed that compared with oxyacetylene surfacing,alloy coatings with the same composition prepared by induction cladding could also make fully metallurgical bonding.On this basis,the hardness value fluctuated less,which was 3.8 HRC higher than that of oxyacetylene surfacing,up to 61.8 HRC.Also,the microstructure was more fine and uniform,and the wear resistance was improved by 28.8%.Meanwhile,the method of induction cladding was cleaner.

关 键 词：感应熔覆 氧乙炔堆焊 Co119合金涂层 耐磨性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]