离心浇铸复合机筒双金属层开裂原因  

Reasons for cracking of bimetallic layer in centrifugal casting composite machine barrel

作　　者：翁文渊 吴伟峰 王挺 田光俭 WENG Wenyuan;WU Weifeng;WANG Ting;TIAN Guangjian(Haitian Plastics Machinery Co.,Ltd.,Ningbo 315000,China)

机构地区：[1]海天塑机集团有限公司,宁波315000

出　　处：《理化检验（物理分册）》2024年第3期60-63,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：在对某高强度离心浇铸复合机筒进行成品检测过程中,发现多件机筒的双金属层开裂。采用低倍组织检验、化学成分分析、金相检验等方法,并结合工艺分析,研究了复合机筒开裂的原因。结果表明:复合机筒的双金属层有疏松缺陷,在压力的作用下,机筒发生开裂;机筒产生疏松缺陷的原因为离心浇铸加热温度不足、保温时间较短、使用的硼砂质量较差等。During the finished product inspection of a high-strength centrifugal casting composite machine barrel,it was found that the bimetallic layer of multiple machine barrels had cracked.The causes of cracking in composite machine barrels were studied using methods such as macrostructure examination,chemical composition analysis,metallographic examination and combined with process analysis.The results show that the bimetallic layer of the composite barrel had loose defects,and the barrel cracked under pressure.The reasons for the occurrence of loose defects in the barrel were insufficient heating temperature during centrifugal casting,short insulation time,and poor quality of borax used.

关 键 词：双金属复合机筒 离心浇铸 疏松缺陷 硼砂 红外光谱 

分 类 号：TB31[一般工业技术—材料科学与工程] TG115.2[金属学及工艺—物理冶金]