90,about inner cylinder of storage tank -凯时登录

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90,about inner cylinder of storage tank - doer equipment

classification:forum publishtime:2019-09-27 13:39:08

about inner cylinder of storage tank

inner cylinder section of storage tank

1) wide plate and long plate shall be selected as far as possible for the outer cylinder to reduce the weld length.

2) the diagonal tolerance of the barrel plate must be confirmed before blanking. when the deviation is too large, the plate edge shall be cut again.

3) barrel plate blanking, cutting, edge planing (groove), groove processing (blunt edge 6mm, 30 degree groove). the inner groove shall be selected for the longitudinal joint of the cylinder.

4) cylinder plate to plate assembly, manual spot welding, submerged arc welding on groove surface, back carbon arc gouging and grinding with grinding wheel to produce metal luster, and back submerged arc welding.

5) before the drum, the tooling at both ends of the drum shall be headed, and the size shall be confirmed according to the sample.

6) coiler drum body. when lifting the flat plate, a 4-jaw lifting rope must be used. when the cylinder is rolled to more than half, it shall be supported by the lifting rope to prevent the diameter of the cylinder from changing or collapsing.

7) the forming size must be confirmed with a sample plate during plate rolling.

8) after the barrel is rolled and qualified, it shall be assembled and welded manually.

9) install the supporting mould for the longitudinal seam of the outer cylinder, and the installation position of the supporting mould shall ensure that it can be welded.

10) submerged arc welding is used to weld the longitudinal joint of cylinder section, back carbon arc air gouging is used to clear the root, and the metal luster is polished with grinding wheel, and back submerged arc welding is used.

11) the two ends of the cylinder are installed with the circumferential seam welding support mould of the outer cylinder, and the lead screw is used to adjust to optimize the roundness of the cylinder. remove the longitudinal weld support mould.

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