A method for surfacing welding of flanges of gasifier equipment

A technology of strip surfacing and gasification furnace, which is applied in welding equipment, arc welding equipment, metal processing equipment, etc., can solve problems such as heavy workload, prone to defects, and difficult quality assurance of electrode arc welding, and achieve improved surfacing Welding efficiency, ensure the quality of surfacing welding and the effect of appearance molding

Active Publication Date: 2018-02-27
SHANXI YANG MEI CHEM IND MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overlap between electrode arc welding and strip surfacing welding is not well connected, prone to defects, and the quality is difficult to guarantee; in addition, the appearance is poor, and the workload of electrode arc welding is heavy

Method used

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  • A method for surfacing welding of flanges of gasifier equipment
  • A method for surfacing welding of flanges of gasifier equipment
  • A method for surfacing welding of flanges of gasifier equipment

Examples

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Embodiment Construction

[0018] A surfacing welding method for flange strips of gasification furnace equipment, comprising the following steps: (1) first surfacing the sealing surface of the flange.

[0019] ① if figure 1 The retaining ring 1 is divided into petals and fixed by spot welding (welding 20 every 200) on the inner wall of the flange. It is required that the upper surface of the retaining ring 1 is flush with the sealing surface of the flange.

[0020] ② After the retaining ring 1 is fixed, the sealing surface of the flange with surfacing welding is adopted, and the transition layer is surfacing until it overlaps with the retaining ring by about 5-8 mm; after the surface layer is surfacing, ensure that the surfacing thickness is ≥ 10 mm.

[0021] ③ After the surfacing is completed, remove the retaining ring, and use a grinder to grind the protruding part to a smooth transition with the inner wall of the flange.

[0022] (2) The inner surface of the surfacing flange.

[0023] ① if figure...

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Abstract

The invention belongs to the field of strip surfacing, and particularly discloses a strip surfacing method for a flange of gasification furnace equipment. The strip surfacing method for the flange of the gasification furnace equipment comprises the steps: during surfacing of a sealing surface, a baffle ring is subjected to spot welding on the inner wall of the flange; and during the surfacing of the inner surface, a shell ring is subjected to the spot welding on the sealing surface and is used for blocking a flux and for transition surfacing. The effect that the flange of the gasification furnace equipment is accomplished by automatic strip surfacing wholly is realized, the surfacing quality and the appearance forming are ensured, and the surfacing efficiency is improved.

Description

technical field [0001] The invention belongs to the field of belt surfacing welding, in particular to a belt surfacing method for flanges of gasification furnace equipment. Specifically, through the selection of a reasonable surfacing welding sequence and the effective use of tooling, the inner wall of the flange of the gasifier equipment and the sealing surface are surfacing with poles, and no manual repair welding is required at the edges and corners. Background technique [0002] The inner diameter of the gasifier flange is relatively large, and the material is Cr-Mo steel forging. The inner surface and sealing surface must be surfacing with stainless steel, and both use strip surfacing, but if the edges and corners are welded with strip surfacing, the flux cannot stay Without protection, resulting in the inability to surfacing. Generally, strip surfacing welding is used to a distance of 15-20mm from the edges and corners. After the strip surfacing welding is completed, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04
CPCB23K9/042
Inventor 周印梅李亚鹏郝晓东吴和斌
Owner SHANXI YANG MEI CHEM IND MACHINERY
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