Electron Beam Welding of TMCP steel S700MC

Biuletyn Instytutu Spawalnictwa Pub Date : 2020-08-01 DOI:10.17729/ebis.2020.4/1

J. Górka, S. Błacha, Dawid Zagrobelny

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引用次数: 1

Abstract

The article discusses tests aimed to determine the effect of electron beam welding on the properties of butt welded joints made in 10 mm thick TMCP steel S700MC. The welding process was performed in the flat position (PA) using an XW150:30/756 welding and surface processing machine (Cambridge Vacuum Engineering). The joints obtained in the tests were subjected to non-destructive tests including visual tests and magnetic particle tests. The joints were also subjected to destructive tests including static tensile tests, bend tests, toughness tests (performed at a temperature of -30°C), hardness tests as well as macro and microscopic metallographic tests. The destructive tests revealed that the joint represented quality level B in accordance with the PN EN ISO 13919-1 standard. The analysis of the destructive test results related to the electron beam butt welded joint (made in steel S700MC) revealed its high mechanical and plastic properties. The toughness tests revealed a decrease in toughness in the HAZ (27 J/cm2) in comparison with that of the base material (50 J/cm2). In addition, the hardness of the HAZ and of the weld increased up to approximately 330 HV; the hardness of the base material amounted to 280 HV.

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TMCP钢S700MC的电子束焊接

本文讨论了电子束焊接对10mm厚TMCP钢S700MC对接焊接接头性能影响的试验。焊接过程采用XW150:30/756焊接和表面加工机(剑桥真空工程)在平位置(PA)进行。在试验中获得的接头进行了非破坏性试验，包括目测试验和磁粉试验。这些接头还进行了破坏性试验，包括静态拉伸试验、弯曲试验、韧性试验(在-30°C的温度下进行)、硬度试验以及宏观和微观金相试验。破坏性测试表明，该接头的质量等级为B，符合PN EN ISO 13919-1标准。对电子束对接焊接接头(S700MC钢)的破坏试验结果进行了分析，结果表明电子束对接焊接接头具有良好的力学和塑性性能。韧性测试显示，与基材(50 J/cm2)相比，热影响区(27 J/cm2)的韧性有所下降。此外，热影响区和焊缝的硬度提高到约330 HV;基材硬度达280hv。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biuletyn Instytutu Spawalnictwa

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