Experimental study on mechanical properties of stainless steel high strength bolts

被引：0
|
作者：
Wang J. [1 ,2 ]
Zheng B. [1 ,2 ]
Shu G. [1 ,2 ]
Jiang Q. [3 ]
机构：
[1] Key Laboratory of Concrete and Prestressed Concrete Structures of China Ministry of Education, Southeast University, Nanjing
[2] School of Civil Engineering, Southeast University, Nanjing
[3] Jiangsu Dongge Stainless Steel Ware Co., Ltd., Yancheng
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2021年 / 42卷 / 11期
关键词：
Galling; High strength bolt; Mechanical property; Stainless steel; Torque coefficient;
D O I：
10.14006/j.jzjgxb.2019.0218
中图分类号：
学科分类号：
摘要：
The research on mechanical properties and torque coefficients of stainless steel high strength bolts have not been reported domestically. The specifications of bolt products are incomplete and the applications are not regulated. The comprehensive mechanical performance tests on seven kinds of stainless steel high strength bolts with different materials and producing processes were carried out in this paper. The geometric parameters, chemical compositions, material properties and hardness were obtained. Furthermore, the constitutive models of different stainless steel bolts were built and the tightening forces were determined. The torque coefficient tests of stainless steel high strength bolts were also performed and the thread galling was commonly observed during the tightening processes. When using the lubricants with MoS2 as the main component, the galling problems could be solved effectively. The test results reveal that when using the high-efficiency lubricant, the torque coefficients of stainless steel bolts are nearly in the range of 0.11-0.15, which is the requirement for carbon steel high strength bolts. Based on the current specifications JGJ 82-2011 for carbon steel high strength bolts, the construction tightening forces and torques for stainless steel high strength bolts were finally determined. © 2021, Editorial Office of Journal of Building Structures. All right reserved.
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页码：195 / 202
页数：7
相关论文
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