我厂冲天炉热风炉胆采用A3钢板制作(见图1)。制作时,上、下两半分别下料、凿孔,然后翻内外边,最后两半合拢点焊焊接起来。由于焊缝为双面连续焊缝,材料又比较薄(δ2)。焊接后,平面翘曲变形很大,一边贴得很紧,一边张得很开,需要2～3天的校正整形才能 Our factory cupola stove with A3 steel production (see Figure 1). Production, the upper and lower half were cut, punched, and then turn inside and outside, the last two half-closed spot welding together. As the weld is double-sided continuous weld, the material is thinner (δ2). After welding, a large plane warp deformation, while the very tight paste, while Zhang very open, need 2 to 3 days to correct shaping