DELAYED FRACTURE OF HIGH STRENGTH BOLTS ON STEEL STRUCTURE FOR BOILERS

YUE Zeng-wu; HU Xin-fang; LIU Qing; WANG Huan-zhen; XUE Qi; QIN Xian-zhen 1.Shandong university

doi:10.19666/j.rlfd.2007.09.027

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

DELAYED FRACTURE OF HIGH STRENGTH BOLTS ON STEEL STRUCTURE FOR BOILERS

更新时间：2025-09-28

- DELAYED FRACTURE OF HIGH STRENGTH BOLTS ON STEEL STRUCTURE FOR BOILERS
- Thermal Power Generation Issue 9, Pages: 88-91(2007)
- 作者机构：
  
  1. 山东大学
  2. 山东电力研究院
  3. 运河发电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.09.027
  CLC： TG115
- Published：2007
- 稿件说明：
移动端阅览
YUE Zeng-wu, HU Xin-fang, LIU Qing, et al. DELAYED FRACTURE OF HIGH STRENGTH BOLTS ON STEEL STRUCTURE FOR BOILERS[J]. Thermal power generation, 2007, (9): 88-91.
DOI：

YUE Zeng-wu, HU Xin-fang, LIU Qing, et al. DELAYED FRACTURE OF HIGH STRENGTH BOLTS ON STEEL STRUCTURE FOR BOILERS[J]. Thermal power generation, 2007, (9): 88-91. DOI： 10.19666/j.rlfd.2007.09.027.

摘要

在某台锅炉钢架安装过程中30多根材质为20MnTiB的扭剪型高强度螺栓发生了断裂。经对这些螺栓进行宏观及微观断口分析、金相分析和显微硬度试验

并按照有关标准进行了螺栓的紧固轴力和楔负荷等试验

认为由于螺栓制造工艺不当造成显微组织及性能的不均匀

以及部分螺栓紧固轴力过高

从而诱发了螺栓的延迟断裂。对产生延迟断裂的原因进行了分析讨论。

Abstract

More than 30 high strength bolts made of 20MnTiB had fractured during the assembling process.Through macro and micro fracture analysis

metallurgical analysis

and micrographic hardness test

as well as fastening axial force and wedge load tests of the bolts carried out according to related standards

it is believed that the non-uniformity of microstructure and performance was resul- ted from imperfect manufacture technology

and overhigh fastening axial force of some bolts may induce delayed fracture of the bolts. The causes leading to delayed fracture have been also analysed and discussed.

关键词

Keywords

references

Views

123

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Structure optimization for pulverized coal mixer of a 300 MW unit boiler

Operation adjustment for high temperature corrosion in water wall of supercritical opposed firing boiler

Effect of coal type on oxygen-enriched combustion boiler based on entropy analysis

Research on main and reheat steam temperature lifting method for ultra supercritical 1 000 MW unit double-tangential circular boiler

Effect of mine ventilation air methane on combustion characteristics of a coal- fired boiler

Related Author

ZHU Zhaoyang

ZHOU Fei

MU Weifu

JI Haimin

ZHOU Ping

LU Fen

ZHAO Zhiping

ZHOU Ke

Related Institution

Fengtai Power Generation Co., Ltd., Fengtai

Xi’an Thermal Power Research Institute Co., Ltd.

Huaneng Liaocheng Thermal Power Generation Co., Ltd.

Xi'an Thermal Power Research Institute Co.,Ltd.

Fujian Hongshan Cogeneration Power Co.,Ltd.,Shishi

AI问答

⁰