落锤试验试样的冷却方式和冷却效果相关性分析
THE CORRELATION ANALYSIS BETWEEN COOLING MEDIUM AND COOLING RESULT OF DWTT SPECIMEN
摘 要
由于在API，ASTM以及国标等相关标准中，对试样在气体介质中的保温时间等无具体规定，在一定程度上限制了冷却介质的选用范围。通过对试样在冷却中物理过程的分析和计算，给出了气体介质冷却条件下落锤试样的保温时间，使气体介质条件下的冷却有初步的依据。同时，给出了试样温度测试的关键之处。
冷却介质
保温时间
DWTT
Cooling medium
Heat preservation time
Abstract
DWTT is the main item of fracture toughness for the pipe-line steel. The testing temperature has great effect on the DWTT results. The cooling medium choice is restricted due to there are not detailed regulations for temperature control as the specimen with gaseous cooling medium in the API, ASTM and the national standards. The analysis and calculating are made for the physical process of the cooling. The heat preservation time are provided for different temperature in the gaseous cooling medium. It provide primary sustaining base to control the cooling process of gaseous cooling medium. The essential point of the temperature testing is brought forward at the same time.
中图分类号 TB302.3
所属栏目
基金项目 中油集团技术开发项目，高钢级管材落锤撕裂断口分析与评判技术研究(04B41102)
收稿日期 2005/8/31
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备注陈宏达(1963-)，男，高级工程师，硕士。
引用该论文: CHEN Hong-da,FENG Yao-rong,HUO Chun-yong,MA Qiu-rong,DONG Bao-sheng,TIAN Tao,CAI Hui-fen,GUO Sheng-wu,WANG Chen. THE CORRELATION ANALYSIS BETWEEN COOLING MEDIUM AND COOLING RESULT OF DWTT SPECIMEN[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2006, 42(5): 228～231
陈宏达,冯耀荣,霍春勇,马秋荣,董保胜,田涛,柴惠芬,郭生武,王晨. 落锤试验试样的冷却方式和冷却效果相关性分析[J]. 理化检验－物理分册, 2006, 42(5): 228～231
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参考文献
【1】杨世铭,陶文铨.传热学[M].北京:高等教育出版社, 1998.
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