非合金奥贝球铁耙片的研究与应用  

Study and Application of the Unalloyed Austempered Ductile Iron Disc Harrow

作　　者：沈大东[1] 金宝士 郭继伟 徐志军[2] 

机构地区：[1]佳木斯大学科技处,黑龙江佳木斯154007 [2]浩良河化肥厂,黑龙江浩良河153103

出　　处：《铸造》2002年第6期352-354,共3页Foundry

摘　　要：研究了采用非合金奥贝球铁 ,经二次孕育处理、等温淬火等工艺措施生产耙片。耙片材质的组织为下贝氏体、残余奥氏体和少量马氏体。经装机实际耕作考核表明 ,使用寿命明显高于 6 5Mn耙片 ,而生产成本却大为降低 ,经济效益和社会效益明显。The disc harrow, which is made of an unalloyed austempered ductile iron and produced by means of casting, double inoculating and isothermal quenching, is studied in this paper. The structure of the disc harrow is composed of lower bainite, remained austenite and a little martensite. The results, obtained from practical cultivation, show that the service life of the disc harrow is remarkably longer than that of 65Mn disc harrow and the cost of this kind of disc harrow is much lowered. It will bring remarkably economical and social benefit if this kind of disc harrow is spread out and applied.

关 键 词：非合金球铁 奥贝球铁 耙片 圆盘耙 

分 类 号：TG255[金属学及工艺—铸造]