CAUSE ANALYSIS OF FRACTURE OCCURRED ON SCREWED HANGING ROD OF PHB TYPE CONSTANT FORCE SUSPENSION BRACKET IN ONE POWER PLANT

WU Xiaojun1; SONG Chunyi2; WANG Junmin1; TIAN Yie1; WANG Bining1; WEI Dawei1; SHEN Wujun1 1.Xi’an Thermal Power Research Institute Co Ltd

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CAUSE ANALYSIS OF FRACTURE OCCURRED ON SCREWED HANGING ROD OF PHB TYPE CONSTANT FORCE SUSPENSION BRACKET IN ONE POWER PLANT

Thermal Power Generation Vol. 40, Issue 9, Pages: 89-91(2011)

更新时间：2025-09-28

- CAUSE ANALYSIS OF FRACTURE OCCURRED ON SCREWED HANGING ROD OF PHB TYPE CONSTANT FORCE SUSPENSION BRACKET IN ONE POWER PLANT
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 华能巢湖发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2011
- 稿件说明：
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WU Xiaojun1, SONG Chunyi2, WANG Junmin1, et al. CAUSE ANALYSIS OF FRACTURE OCCURRED ON SCREWED HANGING ROD OF PHB TYPE CONSTANT FORCE SUSPENSION BRACKET IN ONE POWER PLANT[J]. Thermal Power Generation, 2011, 40(9): 89-91.
DOI：

WU Xiaojun1, SONG Chunyi2, WANG Junmin1, et al. CAUSE ANALYSIS OF FRACTURE OCCURRED ON SCREWED HANGING ROD OF PHB TYPE CONSTANT FORCE SUSPENSION BRACKET IN ONE POWER PLANT[J]. Thermal Power Generation, 2011, 40(9): 89-91. DOI：

摘要

为了确定某电厂PHB型恒力吊架螺纹吊杆断裂原因

对断裂的螺纹吊杆进行了宏观分析、力学性能测试、金相检验及扫描电镜试验。结果表明

吊杆断裂主要原因是吊杆材质的冲击韧性极低

属极度脆性材料

远低于标准规定的许用值

因此在交变拉伸载荷及弯曲载荷作用下发生断裂。此外

PHB型吊架设计有结构缺陷

建议对JB/T8130.1—1999标准进行修改与完善。

Abstract

In order to determine the cause leading to fracture occurred on screwed hanging rod of PHB type constant force suspension bracket in one power plant

macroscopic analysis

mechanical performance test

metallographic examination

and scanning electronic microscope test have been carried out for the fractured screwed hanging rod.Results show that the main cause resulting in fracture of the screwed hanging rod is the very low impact toughness of material

being extremely brittle material

and far lower than the allowed value specified in the standards

hence

the fracture occurred under action of alternating tensile load and bending load.Besides

the PHB type suspension bracket has structure defects in design

it is recommended to amend and perfect the standard JB/T8130.1-1999.

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