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用于高压设备的20毫米GH30合金和1Cr18Ni9Ti不锈钢焊接,迄今尚无完整资料可以借鉴。为此,我们在这方面作了些工作,其中把焊接热裂缝作为主要矛盾来解决。 1966年完成了用H30焊丝作填充料的钨极氩弧焊试验,试验在自由状态的20毫米厚平板上进行。然后,一九六七年产品模拟体生产的氩弧焊封底时发现有宏观纵向裂缝,为了提高效率氩弧焊封底焊后用日本的NiC焊条进行手工电弧焊,同样也发现有纵向宏观
For high-pressure equipment, 20 mm GH30 alloy and 1Cr18Ni9Ti stainless steel welding, so far no complete information to learn from. To this end, we have done some work in this regard, which solves the hot welding cracks as the main contradiction. In 1966, a TIG welding test using H30 wire as a filler was completed. The test was carried out on a free-form 20 mm thick plate. Then, in 1967, the argon arc welding back cover produced by the product simulation body was found to have macroscopic longitudinal cracks. In order to increase the efficiency, argon arc welding after welding with NiC electrode by hand arc welding also found that there was vertical macro