Flange production process

Abstract

The invention relates to a flange production process.The process comprises the following steps that (1) a laser cutting machine is adopted to cut a raw material plate to manufacture 1 / 4 semi-finishedflange sheets, so that the 1 / 4 semi-finished flange sheets are provided with open pores and smooth inner and outer circles, and the roughness of the inner and outer circles and the open pores reaches12.5; ((2) the four 1 / 4 semi-finished flange sheets are laid on a mold of an integrated splicing welding machine; (3) auxiliary arc plates are laid; (4) the integrated splicing welding machine is started, the single-face welding work of flanges is completed, and a gun is automatically withdrawn; (5) the flanges are laid on the reverse sides, the welding work of the sides is completed, and the gunis automatically withdrawn; and (6) the flanges are disassembled, the auxiliary arc plates are cut off, and protrusions of the flange outer circles are polished. The method has the advantages of procedure saving, precision improvement, cost saving, environmental protection and safety.

Description

technical field [0001] The invention belongs to the field of flange manufacture, and in particular relates to a flange preparation process. Background technique [0002] The pipe connection flanges used by the low-concentration waste gas treatment profession in the environmental protection industry are generally self-made splicing flanges, and forged flanges of the national standard level are not used. The design operating pressure of professional pipelines for low-concentration waste gas treatment in the environmental protection industry is not higher than 10KPa, and the design requirement for the thickness of the flange is not higher than 16mm. The demand for this type of flange is large, the diameter is large, and the weight and cost of raw materials of the single-piece flange are relatively high. [0003] At present, the procedures of the flange include: (1) plasma cutting; (2) splicing; (3) line drawing; (4) positioning; (5) drilling; (6) turning the inner and outer ri...

AI Technical Summary

Problems solved by technology

It has the following problems: the process is complex and the precision is poor; professional riveting technology and welding technology are required, and the labor intensity is high; a single person cannot complete the processing of large flanges, and two people need to cooperate; flanges can only be matched one-to-one, but not Wild matching; belongs to manual matching welding, low production efficiency and high labor cost; due to human factors, the quality is not stable enough, and the lack of fixed checking procedures often leads to misalignment of holes, due to lack of compression measures The flange surface is uneven or deformed Decreased sealing performance

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