A Stydy on Residual Stress of Exploxive Clad Steel

爆炸复合钢残余应力的研究

• 批准号: 60550528
• 负责人: NISHIDA Minoru
• 金额: $ 1.09万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550528/
• 关键词: Explosive Clad Steel; Resisual Stress; Instantaneous Heaing in Bonded Zone; Stainless Steel; Welded Joint; Post Weld Heating and Cooling Treatment; 溶接継手; 残留応力軽減法; 加熱・冷却併用処理

1. The residual stresses across thickness of carbon steel(SPHC) and austenite stainless steel (SUS304) explosive clad steel are measured by mean of thin layers meathod.(1) For SPHC explosive clad steel. The biaxial resibual strosses across the thickpess exhibit max. tension in the bonded zone and compression in the other zone.(2) For SUS304 explosive clad steel. The biaxial residucal stresses across the thickness exhibit compression in the surface layer of SUS304, max. tension in the bonded zone, compression in the interior of carbon steel and tension in the surface layer of carbon steel. The heat treatment such as annealing at 550゜C hase little effet on the relief of residual stress and the max.residual stress in SUS304 increasos with an increase in the tensile cold working.2. We adopted a new method in order to relieve residual stress in SUS304 welded joint. This method is such a one as the weld metal is rapidly cooled to -100゜C by high pressure liquid nitrogen and at the same time the base metal is heated to a temperature below 200 ゜C by Propane gas-Oxygen flame. By this post weld heating and cooling treatment, the tensile residual stresses of weld metal and HAZ in welded joint are decreased from level 500-400 MPa in case of as welded condition to level of 100 MPa.

1。跨碳钢（SPHC）和奥斯丁岩不锈钢（SUS304）爆炸性外壳钢的残余应力是通过薄层肉的平均值来测量的。跨厚的提取物最大的双轴重质。粘结区的张力和另一个区域的压缩。（2）对于SUS304爆炸性包裹钢。在SUS304的表面层中，厚度提取物压缩的双轴残留应力，最大。粘结区的张力，碳钢内部压缩和碳钢表面张力的张力。在550°C下退火之类的热处理减轻了残留应力和SUS304增加的残留应力，而张力降低的压力很少，而张力降低了。2。我们采用了一种新方法，以挽救SUS304焊接接头中的残留应力。这种方法是一种方法，因为高压液氮将焊接金属迅速冷却至-100 c c，同时通过丙烷气氧火焰将碱金属加热至低于200 c的温度。通过这篇文章，焊接加热和冷却处理，如果AS焊接条件为100 MPa，则焊接金属和HAZ的拉伸残留应力从500-400 MPA降低。

项目成果

村上善一: 愛媛大学工学部紀要. 10. 469-479 (1985)

Murakami, Y.：爱媛大学工学部通报。10. 469-479 (1985)。

Zen-ichi,Murakami: "A Study on Residual Stress Relief Method of Austenitic Stainless Steel Weld Joint" MEMOIRS OF THE FACULTY OF ENGINEERING,EHIME UNIVERSITY. XI. 467-478 (1988)

村上善一：《奥氏体不锈钢焊接接头残余应力消除方法的研究》爱媛大学工学院回忆录。

村上善一: 愛媛大学工学部紀要. 10. 469-478 (1985)

Murakami, Y.：爱媛大学工学部通报。10. 469-478 (1985)。

Zen-ichi,Murakami: "A Study on Residual Stress Patterns Resulting from Explosive Clad" MEMOIRS OF EHIME UNIVERSITY,SECT.III(ENGINEERING). IX. 173-184 (1981)

Zen-ichi，Murakami：“对爆炸包覆层产生的残余应力模式的研究”爱媛大学回忆录，第三部分（工程）。

村上善一: 溶接学会講演概要集. 39. 334-335 (1986)

Zenichi Murakami：日本焊接学会讲座摘要集 39. 334-335 (1986)。