当板材卷成圆筒焊接后，焊缝从较微观的角度分析：它是直边而不是弧边它是厚

When the plate is rolled into a cylinder and welded, the welding seam is analyzed from a microscopic perspective. It is a straight edge, not an arc edge; it is a thick edge, not an edge; it is rough, not a run-in. On the whole, it not only increases the upper and lower rollers, but also increases the torque of the lower rollers. In view of this, the welding seam should be polished and not too thick. Of course, don't pay much attention to the thickness, you should consider the design. Secondly, when rolling, it must be advanced step by step to avoid excessive torque. This requires not only theoretical understanding, but also empirical guidance. 

When the plate is rolled into a cylinder welded, the weld is more micro-angle analysis, it is straight edge, not arc edge; Overall, it not only makes the upper and lower rollers increase, but also increases the torque of the lower rollers. In view of this, for welds to be polished, not too thick. Of course, not too much attention thickness, design should be considered. Second, the roll must be rolled step by step, so as to avoid excessive torque. This requires not only theoretical, but also empirical guidance. 

When the plate is rolled into a cylinder and welded, the weld seam is straight edge rather than arc edge, thick edge rather than edge, rough rather than running in. Generally speaking, it not only increases the upper and lower rollers, but also increases the torque of the lower rollers. In view of this, the weld should be polished, not too thick. Of course, not too much care about thickness, design should be considered. Secondly, rolling must be carried out step by step in order to avoid excessive torque. This needs not only theoretical explanation, but also experience guidance. A kind of