表面技术Issue(2)：55-59,82,6.DOI:10.16490/j.cnki.issn.1001-3660.2015.02.011
氩气保护下碳化钨对镍基合金熔覆层组织及耐磨性的影响
Effect of Tungsten Carbide on the Microstructure and Wear Resistance of the Nickel-based Alloy Cladding Layer under the Protection of Argon
杨勇 1赵靖宇 2李静 1杨景凤 1赵彬 1孙玉福1
作者信息
- 1. 郑州大学 材料科学与工程学院，郑州450002
- 2. 许昌烟草机械有限责任公司，河南 许昌461000
- 折叠
摘要
Abstract
ABSTRACT:Objective To improve the wear resistance of Q235 steel sheet, and to replace the application of 65Mn in the sieve plate of shaker screen. Methods Tungsten carbide/Nickle-based alloy composite cladding layer was prepared on the surface of Q235 steel plate under the protection of argon gas by resistance wire heating non-vacuum cladding technique. SEM and XRD were used to observe and analyze the combination mode of the cladding layer and the substrate, tungsten carbide distribution, the organi-zation of cladding layer and the phase composition, meanwhile, the Rockwell hardness tester and wear tester were used to test the rock hardness and the wear rate of cladding layer, and analyze the effect of tungsten carbide on the wear resistance of the cladding layer. Results The steel substrate and the cladding layer achieved metallurgical bonding, and the microstructure of the cladding layer mainly consisted of binding phase, tungsten carbide, carbide and boron carbon composite compounds, where the distribution of tungsten carbide was well-proportioned in the cladding layer. With 35% WC content in the cladding layer alloy powder, its rock hardness reached 47. 3HRC and the wear rate was 0. 08 mg/m, which was 5 folds higher than the wear resistance of the steel sub-strate and 4 folds higher than that of 65Mn. Conclusion The tungsten carbide composite cladding layer prepared with argon gas pro-tection was well bonded with the steel substrate and improved the wear resistance of the steel substrate.关键词
氩气保护/碳化钨/熔覆层/耐磨性Key words
argon gas protection/tungsten carbide/cladding layer/wear resistance分类
矿业与冶金引用本文复制引用
杨勇,赵靖宇,李静,杨景凤,赵彬,孙玉福..氩气保护下碳化钨对镍基合金熔覆层组织及耐磨性的影响[J].表面技术,2015,(2):55-59,82,6.
