离心铸造-等温淬火球墨铸铁衬套的耐磨性能

宗爱玲; 赵剑波; 陈大鹏; 孙平

doi:10.15980/j.tzzz.2021.06.027

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离心铸造-等温淬火球墨铸铁衬套的耐磨性能
Wear Resistance of Centrifugal Casting Excavator Sleeves with Austempered Ductile Iron
2021年41卷第6期页码：790-792
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.06.027

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[1]宗爱玲,赵剑波,陈大鹏,孙平.离心铸造-等温淬火球墨铸铁衬套的耐磨性能[J].特种铸造及有色合金,2021,41(06):790-792.

Zong Ailing, Zhao Jianbo, Chen Dapeng, et al. Wear Resistance of Centrifugal Casting Excavator Sleeves with Austempered Ductile Iron[J]. Special Casting & Nonferrous Alloys, 2021,41(6):790-792.
[1]宗爱玲,赵剑波,陈大鹏,孙平.离心铸造-等温淬火球墨铸铁衬套的耐磨性能[J].特种铸造及有色合金,2021,41(06):790-792. DOI： 10.15980/j.tzzz.2021.06.027.

Zong Ailing, Zhao Jianbo, Chen Dapeng, et al. Wear Resistance of Centrifugal Casting Excavator Sleeves with Austempered Ductile Iron[J]. Special Casting & Nonferrous Alloys, 2021,41(6):790-792. DOI： 10.15980/j.tzzz.2021.06.027.

摘要

为提高挖掘机衬套的使用寿命

采用离心铸造结合等温淬火制备了球墨铸铁（ADI）衬套

并对ADI衬套进行力学性能检测、金相组织分析和耐磨性能试验。结果表明

ADI淬火组织细密

主要由下贝氏体、球状石墨、残余奥氏体组成。在干摩擦和油润滑条件下

ADI衬套的摩擦因数和磨损量均远低于45钢

可以满足挖掘机衬套的性能要求

展现出良好的应用前景。

Abstract

Excavator sleeves with austempered ductile iron were prepared by centrifugal casting process combined with isothermal quenching in order to improve the service life. Microstructure

mechanical properties and wear resistance of the samples were analyzed. The results indicating that the quenching microstructure of ADI is fine

composed of ultrafine needle-shaped ferrites

spheroidal graphite and residual austenite. Under dry and oil friction conditions

the friction coefficient and wear loss of ADI are far lower than that of 45 steel. ADI meets the performance requirements of excavator sleeve

showing a good application prospect in construction machinery.