论文部分内容阅读
介绍了换热器高压壳体环缝的预热焊丝窄间隙埋弧焊、冷裂纹及再热裂纹敏感性较大的厚大锻件20MnMo下封头与20MnMoNb底部四通的焊接及密封阀座斯太利硬质合金堆焊的工艺。
Introduced the heat exchanger high pressure shell ring seam preheating welding wire narrow gap submerged arc welding, cold cracking and reheat cracking large forgings 20MnMo lower head and 20MnMoNb bottom four-way welding and sealing valve seat Sri Lanka Tai Li carbide surfacing process.