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Butt welding technology for hydrogenation reactor end socket

A technology of hydrogenation reactor and head, which is applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of high equipment cost, complexity and low production efficiency.

Inactive Publication Date: 2015-05-20
QINGDAO XUSHENG HEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the tailor welding process of hydrogenation reactor head is complicated to operate, with high equipment cost and low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] The process includes: welding groove dry magnetic particle inspection → preheating → assembly, spot welding → narrow gap submerged arc automatic welding → welding outer groove → post-heating. The preheating temperature is ≥200°C, the welding narrow gap temperature is 200-250°C, the post-heating temperature is 200-300°C, the post-heating time is 2h, the welding current is 500-550A, the welding voltage is 28-30V, and the welding speed is 360 ~400mm / min.

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PUM

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Abstract

The invention discloses a butt welding technology for a hydrogenation reactor end socket. The technology includes the processes of groove welding dry magnetic powder detecting, preheating, assembling and spot welding, narrow gap union melt welding, outer groove welding and after-heating. The preheating temperature is larger than or equal to 200 DEG C, the welding narrow gap temperature is 200-250 DEG C, the after-heating temperature is 200-300 DEG C, the after-heating time is 2 h, the welding current is 500-550 A, the welding voltage is 28-30 V, and the welding speed is 360-400 mm / min. Operation is simple and convenient, and the welding precision is high.

Description

[0001] technical field [0002] The invention belongs to a head tailor welding process, in particular to a hydrogenation reactor head tailor welding process. [0003] Background technique [0004] At present, the tailor welding process of hydrogenation reactor head is complicated to operate, with high equipment cost and low production efficiency. [0005] Contents of the invention [0006] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a tailor welding process for the head of a hydrogenation reactor, which is easy to operate. [0007] The hydrogenation reactor head tailor welding process provided by the present invention includes: dry magnetic particle inspection of welding groove → preheating → assembly, spot welding → narrow gap submerged arc automatic welding → welding outer groove → post-heating. The preheating temperature is ≥200°C, the welding narrow gap temperature is 200-250°C, the post-heati...

Claims

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Application Information

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IPC IPC(8): B23K9/18B23K9/235
CPCB23K9/18B23K9/235
Inventor 杜学梅
Owner QINGDAO XUSHENG HEAD