离心铸造低合金铸铁轧辊表面缺陷分析

郑爱琴; 陈荣东; 宋新莉; 朱瑞琪; 苏海根; 方勤波

doi:10.15980/j.tzzz.2018.02.021

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离心铸造低合金铸铁轧辊表面缺陷分析
Analysis of Surface Defects in Centrifugal Casting Low Alloy Iron Casting Mill Roller
2018年38卷第2期页码：189-192
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.02.021

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[1]郑爱琴,陈荣东,宋新莉,朱瑞琪,苏海根,方勤波.离心铸造低合金铸铁轧辊表面缺陷分析[J].特种铸造及有色合金,2018,38(02):189-192.

Zheng Aiqin, Chen Rongdong, Song Xinli, et al. Analysis of Surface Defects in Centrifugal Casting Low Alloy Iron Casting Mill Roller[J]. Special Casting & Nonferrous Alloys, 2018,38(2):189-192.
[1]郑爱琴,陈荣东,宋新莉,朱瑞琪,苏海根,方勤波.离心铸造低合金铸铁轧辊表面缺陷分析[J].特种铸造及有色合金,2018,38(02):189-192. DOI： 10.15980/j.tzzz.2018.02.021.

Zheng Aiqin, Chen Rongdong, Song Xinli, et al. Analysis of Surface Defects in Centrifugal Casting Low Alloy Iron Casting Mill Roller[J]. Special Casting & Nonferrous Alloys, 2018,38(2):189-192. DOI： 10.15980/j.tzzz.2018.02.021.

摘要

借助OM、SEM及体视显微镜

分析了离心铸造低合金铸铁轧辊表面缺陷的微观特征、组织、夹杂物类型及成分等。结果表明

轧辊中存在大量孔洞

孔洞最深可达16.23μm

离心铸造轧辊主要组织是珠光体+渗碳体

基体中有MnS、TiC与VC析出

并存在P偏聚区。结合实际生产工艺分析了离心铸造铸铁轧辊表面锈斑缺陷产生的原因

并提出了改进措施。

Abstract

The microscopic characteristics

microstructure and inclusions of surface defects in centrifugal casting low alloy iron casting mill roller were analyzed by optical microscope and scanning electron microscope

stereoscopic microscopes.The results show that there exist a lot of holes in the mill roller with the depth of 16.23μm.The microstructure is composed of pearlite and cementite

and MnS inclusion and TiC as well as VC precipitates can be observed

and phosphorus segregation zone in the matrix is present.The reasons of the centrifugal casting defects were analyzed according to the production process

and the countermeasures were provided.