Investigating Automatic Welding Technology for Oversized Saddle Weld Structure

HE Bing; HUO Xiaohan; JIANG Guoyan; LI En; DAI Guangming; WANG Yuzhong; LIU Qing

doi:10.7512/j.issn.1001-2303.2025.06.10

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Investigating Automatic Welding Technology for Oversized Saddle Weld Structure
Vol. 55, Issue 6, Pages: 72-80(2025)
Received：28 October 2024，

Revised：31 December 2024，

Published：20 June 2025
DOI： 10.7512/j.issn.1001-2303.2025.06.10
稿件说明：

移动端阅览

何冰，霍肖寒，江国焱，等.超大马鞍量马鞍形焊缝自动焊接技术研究［J］.电焊机，2025，55（6）：72-80. DOI： 10.7512/j.issn.1001-2303.2025.06.10.

HE Bing, HUO Xiaohan, JIANG Guoyan, et al.Investigating Automatic Welding Technology for Oversized Saddle Weld Structure[J].Electric Welding Machine, 2025, 55(6): 72-80. DOI： 10.7512/j.issn.1001-2303.2025.06.10.

摘要

高温气冷堆热气导管法兰与筒体的“超大马鞍”焊缝的焊接是产品制造的难点，直接影响产品履约交付，目前尚无成熟的自动焊解决方案。提出一种创新的超大马鞍量马鞍形焊缝自动焊接技术，该技术基于传统埋弧焊技术，融合了机器人空间复杂轨迹曲线技术、细丝埋弧焊技术、摆动焊接、脉冲电弧技术以及窄间隙坡口设计等多项关键技术，成功解决了传统埋弧焊技术在连续上、下坡大角度急变结构下无法成形的问题，同时大幅度降低焊接热输入，保证了焊缝关键性能指标。焊接效率相比现有技术提升约2.1倍，焊接周期从75天缩短至28天。该技术在国际以及国内核电行业属首次应用，对比核电行业内现有成熟热气导管“超大马鞍”焊接技术，其焊接效率和质量大幅度提升。

Abstract

The oversized saddle weld of hot gas pipe flange and barrel was a difficult problem in the manufacture of the high temperature gas-cooled reactor product

which directly affected the product delivery.There were no mature automatic welding solutions at present. The automatic welding technology of oversized saddle weld was an advanced submerged arc welding technology independently developed by Dong Fang (Guang Zhou) Heavy Machinery Co.

Ltd. Integrated innovation on the basis of traditional submerged arc welding technology.By integrating a number of key technologies such as robot space complex trajectory curve technology

filaments submerged arc welding technology

weave bead

pulsed arc technology and narrow gap groove design

the problem that traditional submerged arc welding technology could not be formed under under large slope was successfully solved. Meanwhile the welding heat input was greatly reduced to ensure the key performance indicators of the weld. The automatic welding technology for oversized saddle weld was the first application in the international and domestic nuclear power industry. Compared with the known oversized saddle weld technology in the nuclear power industry

the welding efficiency and quality were greatly improved.

关键词

Keywords

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