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伴随着焊接结构的大型化发展,厚板 U 形的坡口加工量日益增加。哈尔滨焊接研究所对 U 形坡口的火焰切割工艺进行了研究,制造了切割机,并通过了部级技术鉴定。该工艺方法是在一台直线气割机上,配置了三把割炬:一把用作正常切割与切割钝边,一把用作切割斜边的第二次成形;一把为主割炬,用作沿钢板厚度方向气刨出半圆
With the large-scale development of welded structures, the amount of plate U-shaped groove processing is increasing. Harbin Institute of Welding on the U-groove flame cutting process were studied to create a cutting machine, and passed the ministerial technical appraisal. The process is in a straight gas cutting machine, equipped with three torches: one for the normal cutting and cutting the blunt edge, one for cutting the bevel edge of the second forming; a main cutting torch with For the direction along the thickness of the gas gouged semicircle