自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
自然科学版 英文版
英文版编委
自然科学版 英文版
英文版首届青年编委

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第51卷    第1期    总第305期    2020年1月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2020)01-0094-09
工艺参数对楔横轧42CrMo/Q235层合轴复合界面显微硬度的影响
张孝1, 2,彭文飞1, 2,束学道1, 2,吴志军1, 2

(1. 宁波大学 机械工程与力学学院,浙江 宁波,315211;
2. 宁波大学 浙江省零件轧制成形技术研究重点实验室,浙江 宁波,315211
)

摘 要: 采用楔横轧方法成形42CrMo/Q235层合轴,对42CrMo/Q235层合轴复合界面显微硬度进行测试,研究成形角α、展宽角β、断面收缩率Ψ、轧制温度t、基材直径d等工艺参数对界面显微硬度的影响规律。研究结果表明:轧制温度、断面收缩率对界面显微硬度影响较大,基材直径、展宽角、成形角对界面显微硬度影响较小;随着轧制温度的升高,界面相同位置处显微硬度下降;随着断面收缩率的增大,界面相同位置处显微硬度增大;随着基材直径的增加,界面相同位置处显微硬度略微增加,但增加的幅度不大;随着成形角、展宽角的增加,界面相同位置处显微硬度略微增加,但增加的幅度不大。研究结果可为合理确定楔横轧42CrMo/Q235层合轴工艺参数和提高界面结合质量提供参考。

 

关键词: 楔横轧;层合轴;工艺参数;显微硬度

Effect of rolling parameters on microhardness of cross-wedge rolling of 42CrMo/Q235 laminated shaft composite interface
ZHNG Xiao1, 2, PENG Wenfei1, 2, SHU Xuedao1, 2, WU Zhijun1, 2

1. College of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China;
2. Zhejiang Provincial Key Lab of Part Rolling Technology, Ningbo University, Ningbo 315211, China

Abstract:The 42CrMo/Q235 laminated shaft was formed by cross wedge rolling, and the microhardness of 42CrMo/Q235 laminated shaft composite interface was tested. The effects of forming angle α, broadening angle β, area reduction Ψ, rolling temperature t and substrate diameter d on the interfacial microhardness were studied. The results show that the rolling temperature and section shrinkage have a great influence on the interfacial microhardness, while the substrate diameter, broadening angle and forming angle have a little influence on the interfacial microhardness. With the increase of rolling temperature, the microhardness of the same position decreases. The microhardness of the same location increases with the increase of the area reduction. With the increase of substrate diameter, the microhardness of the same position increases slightly, but the extent of increase is not large. With the increase of forming angle and broadening angle, the microhardness at the same position increases slightly, but the increase is not significant. The results can be used as a reference for determining the process parameters of 42CrMo/Q235 cross wedge rolling and improving the interface bonding quality.

 

Key words: cross wedge rolling; laminated shaft; process parameters; microhardness

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号