ANALYSIS OF PERFORMANCE FOR P91/92 MAIN STEAM PIPELINE AFTER WATER QUENCHING IN THE PROCESS OF HEAT TREATMENT

XU Jiangxiao1; CHANG Jianbing1; QIU Minglin2; HUANG Jie2; CHEN Dongxu21.Henan Electric Power Testing and Research Institute

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ANALYSIS OF PERFORMANCE FOR P91/92 MAIN STEAM PIPELINE AFTER WATER QUENCHING IN THE PROCESS OF HEAT TREATMENT

更新时间：2025-09-28

- ANALYSIS OF PERFORMANCE FOR P91/92 MAIN STEAM PIPELINE AFTER WATER QUENCHING IN THE PROCESS OF HEAT TREATMENT
- Thermal Power Generation Vol. 39, Issue 9, Pages: 113-115(2010)
- 作者机构：
  
  1. 河南电力试验研究院
  2. 河南第一火电建设公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.72
- Published：2010
- 稿件说明：
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XU Jiangxiao1, CHANG Jianbing1, QIU Minglin2, et al. ANALYSIS OF PERFORMANCE FOR P91/92 MAIN STEAM PIPELINE AFTER WATER QUENCHING IN THE PROCESS OF HEAT TREATMENT[J]. Thermal power generation, 2010, 39(9): 113-115.
DOI：

XU Jiangxiao1, CHANG Jianbing1, QIU Minglin2, et al. ANALYSIS OF PERFORMANCE FOR P91/92 MAIN STEAM PIPELINE AFTER WATER QUENCHING IN THE PROCESS OF HEAT TREATMENT[J]. Thermal power generation, 2010, 39(9): 113-115. DOI：

摘要

针对某电厂660MW机组P91/P92主蒸汽管道热处理过程进水情况进行了模拟试验

对水急冷后的试样进行了无损检测、力学性能分析、金相组织检验。结果表明

P91/P92主蒸汽管道热处理过程水急冷后对焊缝的硬度以及冲击韧性影响较大

但对焊缝的抗拉强度、弯曲、金相组织等影响不大

可满足运行的安全要求

但建议在检修中对该焊口进行重点检查。

Abstract

Directing against the water in taking situation in heat-treatment process of P91/92 main steam pipeline for 660 MW units in one power plant

a simulation test has been carried out

the non-destructive inspection

mechanical test

and metallographic examination of the samples after water quenching being made.Research show that the heat treatment process of P91/92 main steam pipeline after water quenching has large influence upon hardness and impact toughness of the weld joints

but it has little influence upon tensile strength

bending flexure

and metallographic structure of the weld joints

can satisfy the requirement of safety in operation.However

it is recommended to carry out intensive inspection for weld joints in repair.

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