试议换热器制造工艺指导流程(doc 15页)

试议换热器制造工艺指导流程内容提要：
1.将各筒节按排版图要求组对，各缝分布于0~180°，互错180°，环缝组对间隙0~2mm。 According to the requirements of each tube section layout diagram,combine them, each seam is distributed in the 0 to 180 ° , Stagger 180 ° ,the circumferential seam combination gap is 0 ~ 2mm.
2.组对完毕后，从0°、90°、180°、270°四个方位检测，直线度10%，且不大于4.5mm。.Detect after the combination of the 0 °, 90 °, 180 °, 270 ° four orientation,10% straightness, and no larger than 4.5mm.
3.环缝棱角度控制在δS/10+2，且不大于5mm错边量。 Control the ring slit angular degree at δS/10+2, no larger than 5mm  Staggerion of the volume.
4.环缝组对时不可强行组装，可用加减丝扣调节间隙，间隙在0~1.5mm最佳。 When combine the Circumferential seam ,we must not assemble forcibly,use the available subtraction threaded to adjust the gap, the gap is at best in the 0 ~ 1.5mm.

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