采用废高碳钢丝生产灰铸铁刹车盘的研究与实践  

Research and Practice of Producing Gray Iron Brake Discs with Waste High Carbon Stee1 Wires

作　　者：赵忠魁[1,2] 李钊 王春轩 衣冠玉 孙红滨 马海龙 ZHAO Zhong-kui;LI Zhao;WANG Chun-xuan;YI Guan-yu;SUN Hong-bin;MA Hai-long(School of Materials Science and Engineering,Shandong Jianzhu University,Jinan 250101,Shandong,China;Shandong Engineering Research Center for Clean Foundry,Jinan 250101,Shandong,China;Shandong Lucida Machinery Co.,Ltd.,Binzhou 251900,Shandong,China)

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]山东省铸造清洁生产工程技术研究中心,山东济南250101 [3]山东卢斯得机械股份有限公司,山东济南251900

出　　处：《铸造》2021年第10期1239-1243,共5页Foundry

摘　　要：研究了利用废高碳钢丝生产灰铸铁刹车盘的组织与性能,分析了灰铸铁刹车盘中的石墨和基体组织,测定了刹车盘的硬度和抗拉强度,并对其进行了磨损试验和循环过程测试。结果表明:采用废高碳钢丝生产的灰铸铁刹车盘中的A型石墨片分布均匀、细小且弯曲度较大,珠光体含量大于98.6%,珠光体片间距不大于0.98 mm;刹车盘各处硬度均匀,均在HB 202以上,其抗拉强度在260 MPa以上,而且高碳废钢丝用量越大,刹车盘的强度和硬度越高。灰铸铁刹车盘的摩擦性能较好,具有良好的循环使用寿命,超过EN-GJL-200灰铸铁。The microstructure and properties of gray iron brake discs made with waste high carbon steel wires were researched.The microstructures of graphite and matrix in the gray iron brake discs were observed,the hardness and tensile strength of the brake discs were measured,and the wear test and cycle test were carried out.The results show that the A-type graphite flakes in the gray iron brake discs are fine,curved and evenly distributed in the pearlite matrix,and the matrix contains more than 98.6%pearlite,of which the lamellar spacing is less than 0.98 mm.The hardness of the brake discs is uniform and all is more than HB 202.The tensile strength is more than 260 MPa.The tensile strength and hardness are improved with increasing the addition of the waste high carbon steel wires.The gray iron brake discs produced with the waste high carbon steel wires have excellent friction performance and long cycle service life,which exceeds that of EN-GJL-200 brake discs.

关 键 词：废高碳钢丝 灰铸铁刹车盘 组织 性能 

分 类 号：TG143.2[一般工业技术—材料科学与工程]