Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2007-12-10

Journal: 铸造

Included Journals: CSCD、ISTIC、PKU、Scopus

Volume: 56

Issue: 12

Page Number: 1295-1297

ISSN: 1001-4977

Key Words: 离心球铁管;温度;球化率;超声横波声速

Abstract: 球墨铸铁的球化率随超声声速的线性变化关系已经被人们所认同.由于声速还随着温度而改变,测试了从室温到160℃范围内声速随管壁温度的变化规律,结果表明,横波声速随着温度升高而线性降低,并且声速的温度系数几乎不受球化率的影响,据此,可将各个温度下测得的横波声速换算成室温下的声速进行球化率检测,从而排除管壁温度对球化率检测的影响.