压裂泵阀座激光熔覆研究及应用  

Laser Cladding on Pump Valve Seat of Fracturing Pump

作　　者：崔岗[1,2] 韩彬[1,2] 王浩宇[1,2] 

机构地区：[1]国家采油装备工程技术研究中心 [2]中国石油大学(华东)机电工程学院

出　　处：《石油机械》2016年第7期86-89,共4页China Petroleum Machinery

基　　金：国家自然科学基金项目"海水泵金属陶瓷离子渗硫原位合成纳米固体润滑膜层研究"(51179202);国家863计划项目"深水钻机关键装备腐蚀与防护研究"(2012AA09A203);清华大学摩擦学国家重点实验室开放基金项目"激光熔覆金属陶瓷离子渗硫原位合成纳米固体润滑膜层摩擦学性能研究"(SKLTKF13B04)

摘　　要：为了得到符合要求的激光熔覆材料和工艺参数,对410不锈钢阀座基体进行激光熔覆Co基加WC金属陶瓷涂层处理,通过扫描电镜、硬度测试和摩擦磨损试验研究了激光熔覆粉末材料、工艺参数以及后续热处理对不锈钢表面熔覆层组织性能的影响。研究结果表明,以SD-1和SD-2为主体配置的粉末得到成型性良好的熔覆层,随着扫描速度增大,熔覆层硬度和裂纹敏感性增大;后续热处理能够明显降低HAZ硬度;熔覆层与基体结合紧密,与未处理试件相比,经过处理的熔覆层耐磨性大大提高。研究结果对于激光熔覆技术的现场应用具有一定的指导作用。In order to get the laser cladding materials and process parameters that meet the requirements, the valve seat made of 410 stainless steel is processed by laser cladding, and the powder is mainly made of Co metal and a litter ceramic material. The relationship between laser cladding powder, process parameters and subsequent heat treatment and the microstructure and properties of cladding layer is researched by SEM, hardness test, friction and wear test. The research results showed that, the powder made mainly by SD-1 and SD-2 can get the coating with good pattern. With the increase of scanning speed, the hardness and the crack sensitivity of the coatings increase. The HAZ hardness is significantly reduced by subsequent heat treatment. The cladding layer is closely related to the sub-strate. The wear resistance of the cladding layer is greatly improved compared to the unprocessed work piece.

关 键 词：不锈钢阀座 激光熔覆 CO基合金 热处理 

分 类 号：TE934[石油与天然气工程—石油机械设备]