再生复合材料辊环组织与性能的研究  

Study on microstructure and properties of recycled composite roller rings

作　　者：刘旭东[1] 宋延沛[1] 毕双绪[1] 张良[1] 禄璐[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《矿山机械》2010年第10期26-30,共5页Mining & Processing Equipment

摘　　要：对用废旧的WCP/Fe-C基复合材料轧辊进行重熔和离心浇注制备的试样进行了研究,结果表明,复合材料辊环在相同条件下的高速磨损性能优于高速钢;芯部基体的冲击韧性最高达6.9J/cm2,可抵抗外界的冲击载荷;试样的硬度随离心机转速的升高而增加,而冲击韧性随离心机转速的升高而减小;试样工作层组织中WC颗粒分布比较均匀,WC颗粒被高温铁液局部熔解,甚至解体,WC颗粒的局部熔解、扩散又使在Fe-C合金基体被高合金化。通过对其性能研究为该技术发展提供数据参考。The paper studies the microstructures and properties of the centrifugal casting of test pieces prepared with WCP/Fe-C matrix composite rollers scraps after remelting treatment.The results show that the composite roller rings are superior to high speed steel in high speed abrasion behavior under the same conditions,and the matrix core region exhibits the highest impact toughness of 6.9 J/cm^2 which can resist the external impact.As the centrifuge rotary speed raises,the hardness of test pieces increase and the impact toughness decrease.Moreover,WC particles are distributed evenly in working layers of test piece and partially melts in hot molten iron even to disaggregation.The partial melting and diffusion of WC particles makes the Fe-C alloy matrix highly alloyed.The study can provide reference for the technology development.

关 键 词：再生复合材料 离心铸造 力学性能 微观组织 磨损 

分 类 号：TB333[一般工业技术—材料科学与工程] TB331