Effect of Process Parameters on Welding Imperfection of Multi-pass Welding for Q690D High Strength Steel

LIU Sheng; CHANG Yunfeng; BAI Haiming; GUO Peilu; SHOU Chenpeng; LIU Xiaofang

doi:10.7512/j.issn.1001-2303.2023.10.06

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Effect of Process Parameters on Welding Imperfection of Multi-pass Welding for Q690D High Strength Steel
Vol. 53, Issue 10, Pages: 36-44(2023)
DOI： 10.7512/j.issn.1001-2303.2023.10.06

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刘晟，常云峰，白海明，等.焊接工艺参数对Q690D高强钢多层多道焊缝缺欠的影响［J］.电焊机，2023，53（10）：36-44.

LIU Sheng, CHANG Yunfeng, BAI Haiming, et al.Effect of Process Parameters on Welding Imperfection of Multi-pass Welding for Q690D High Strength Steel[J].Electric Welding Machine, 2023, 53(10): 36-44.
刘晟，常云峰，白海明，等.焊接工艺参数对Q690D高强钢多层多道焊缝缺欠的影响［J］.电焊机，2023，53（10）：36-44. DOI： 10.7512/j.issn.1001-2303.2023.10.06.

LIU Sheng, CHANG Yunfeng, BAI Haiming, et al.Effect of Process Parameters on Welding Imperfection of Multi-pass Welding for Q690D High Strength Steel[J].Electric Welding Machine, 2023, 53(10): 36-44. DOI： 10.7512/j.issn.1001-2303.2023.10.06.

摘要

针对液压支架结构件用Q690D高强钢多层多道焊焊缝，通过焊缝横截面形貌分析、X射线检测等分析手段研究了焊接电流、保护气体流量、焊丝干伸长、坡口拼装间隙等焊接工艺参数对焊缝缺欠类型、位置与数量的影响，并通过拉伸试验、冲击试验测试了焊接接头性能。结果表明，液压支架结构件用Q690D高强钢多层多道焊焊缝中缺欠以气孔、未熔透和未熔合为主，其中气孔约占43%，未熔透约占30%，未熔合约占23%；缺欠主要集中于焊道根部、焊缝内、焊道与母材熔合线处、焊道之间等位置，其中，焊道根部缺欠数量约占54%，为焊缝缺欠最集中的位置；试验范围内，焊接电流、保护气流量、焊丝干伸长等参数对焊缝内部缺欠影响较大，而对焊缝根部缺欠无明显影响；拼接间隙对焊缝根部未熔透、气孔等缺欠有明显的影响作用，当拼接间隙为2mm时，可有效减少根部缺欠；保护气种类主要影响焊缝成形质量，而对焊缝缺欠无明显影响；优化工艺参数后，焊缝缺欠明显降低，无明显未熔透、未熔合等缺欠，气孔率约2.1%，接头抗拉强度达798.6MPa，接头性能良好。

Abstract

Aiming at the multi-layer and multi-pass welding seam of Q690D high strength steel for fully mechanized hydraulic support structural parts, the effects of welding process parameters such as welding current, shielding gas flow, wire extension and assembly gap on the type, position and quantity of weld defects were studied by section analysis and X-ray detection. The joint performance was tested by tensile test and impact test. The results showed that the weld bead were mainly pores, incomplete penetration and incomplete fusion, among which pores account for about 43 %, incomplete penetration accounts for about 30%, and incomplete fusion accounts for about 23%. The defects were mainly concentrated in the root of the weld, the inside of the weld, the fusion line between the weld and the base metal, and between the welds. Among them, the number of weld root defects accounts for about 54%, which was the most concentrated position of weld defects. In the test, welding current, shielding gas flow rate, wire extension and other parameters had a great influence on the internal defects of the weld, but had no obvious influence on the root defects of the weld. The splicing gap had a significant effect on the defects such as incomplete penetration and porosity at the root of the weld. When splicing gap was 2 mm, the root defect could be effectively reduced. The type of shielding gas mainly affected the quality of weld formation, but had no obvious effect on weld defects. After optimizing the process parameters, the weld defects were obviously reduced, and there were no obvious defects such as incomplete penetration and incomplete fusion. The porosity was about 2.1%, the tensile strength of the joint was 798.6 MPa, and the joint performance was good.

关键词

Q690D液压支架焊接参数多层多道焊焊接缺欠

Keywords

Q690Dhydraulic supportwelding process parametersmulti-pass weldingwelding imperfection

references

兰志宇，赵旭，孟贺超. https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50154324&type=https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50154343&type=https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50154342&type=2.000000002.220338823.1751.6 mm焊丝在机器人焊接液压支架结构件上的应用［J］. 焊接， 2017（11）： 47-50+71.

LAN Z Y， ZHAO X， MENG H C. Application of Φ1.6 mm welding wire to robot welding of hydraulic support［J］. Welding & Joining， 2017（11）： 47-50+71.

刘晓玲. 超声等离子焊接在液压支架修复工艺中的应用［J］. 焊接， 2022（03）： 35-40.

LIU X L. Application of ultrasonic plasma arc welding in repair process of hydraulic support［J］. Welding & Joining， 2022（03）： 35-40.

赵旭，兰志宇，孟贺超. 液压支架立柱窄间隙环焊线速度研究［J］. 热加工工艺， 2017， 46（17）： 243-245.

ZHAO X， LAN Z Y， MENG H C. Study on welding speed of narrow gap grith welding for hydraulic support leg［J］.Hot Working Technology，2017，46（17）：243-245.

刘书麟. 焊接工艺对液压支架钢结构焊缝性能的影响［J］. 电焊机， 2014， 44（12）： 111-114.

LIU S L. Welding process on the properties of hydraulic support structural steel weld［J］. Electric Welding Machine， 2014， 44（12）： 111-114.

张庆素，陈振业，陈波，等.Q690抗震耐蚀钢埋弧焊熔敷金属性能研究［J］.电焊机，2022，52（03）：105-110.

ZHANG Q S， CHEN Z Y， CHEN B， et al. Research on the mechanical properties of Q690 seismic and corrosion resistant steel submerged arc welding deposited metal［J］. Electric Welding Machine， 2022， 52（03）： 105-110.

董达善，俞翔栋，黄婉娟，等. Q690高强钢厚板MAG焊焊接工艺［J］. 电焊机，2015，45（04）：123-126.

DONG D S， YU X D， HUANG W J. Study on MAG welding process for the thick plate of Q690 high-strength steel［J］. Electric Welding Machine， 2015， 45（04）： 123-126.

常彦鹏. 液压支架结构件焊接工艺水平研究［J］. 当代化工研究， 2022（10）： 150-152.

CHANG Y P. Research on welding technology level of hydraulic support structural parts［J］. Modern Chemical Research， 2022（10）： 150-152.

王德印，凡乃峰，印文才，等. 液压支架千斤顶附件的焊接工艺研究［J］. 电焊机，2021，51（07）：89-92.

WANG D Y， FAN N F， YIN W C， et al. Study on welding process of jack accessory of hydraulic support［J］. Electric Welding Machine， 2021， 51（07）： 89-92.

赵旭，段青辰，孟贺超. 适用于液压支架结构件机器人焊接的拼装工艺研究［J］. 金属加工（热加工）， 2017（12）： 54-57.

ZHAO X， DUAN Q C， MENG H C. Research on assembly process suitable for robot welding of hydraulic support structural parts［J］. MW Metal Forming， 2017（12）： 54-57.

王春华，刘灿. 液压支架掩护梁侧护板焊接变形的数值模拟［J］. 热加工工艺， 2016， 45（09）： 229-233.

WANG C H， LIU C. Numerical simulation of welding deformation of shield beam side guard plate of hydraulic support［J］. Hot Working Technolog，2016，45（09）： 229-233.

马宇，胡增光，崔磊. 液压支架焊接质量影响因素分析与控制措施分析［J］. 现代制造技术与装备， 2022， 58（08）： 185-187.

MA Y， HU Z G， CUI L. Analysis of factors affecting the welding quality of hydraulic support and analysis of control measures［J］. Modern Manufacturing Technology and Equipment， 2022，58（08）：185-187.

王波. 煤矿液压支架结构件的焊接工艺探讨［J］. 内蒙古煤炭经济， 2021（21）： 49-51.

WANG B. Discussion on welding process of hydraulic support structure in coal mine［J］. Inner Mongolia Coal Economy，2021（21）：49-51.

崔海舰. 煤矿液压支架结构件焊接工艺初探［J］. 中国石油和化工标准与质量，2020，40（17）：224-225.

CUI H J. Discussion on welding process of hydraulic support structure in coal mine［J］. China Petroleum and Chemical Standard and Quality，2020，40（17）：224-225.

翟紫阳，王克鸿. 超高强钢板多层多道焊温度场有限元分析［J］. 电焊机，2014，44（05）：202-205.

CUI Z Y， WANG K H. Finite element analysis of temperature field in multi-pass welding of ultra-high strength steel plate［J］.Electric Welding Machine，2014，44（05）：202-205.

ISO 13919-2：2001， Welding-Electron and laser beam welded joints-Guidance on quality levels for imperfections - Part 2： Aluminum and tis weldable alloys［S］. International standard， 2001.

GB/T 6417.1—2005，金属熔化焊接头缺欠分类及说明［S］. 哈尔滨：全国焊接标准化技术委员会，2005.

李福永，杨高，白海明. 液压支架结构件常见缺欠国内外标准对比解析［J］. 电焊机， 2020， 50（01）： 88-91+128.

LI F Y， YANG G， BAI H M. Comparison and analysis of domestic and foreign standards on common defect of hydraulic support stucture［J］. Electric Welding Machine，2020，50（01）：88-91+128.

方乃文，黄瑞生，闫德俊，等. 低镍含氮奥氏体不锈钢激光-电弧焊电弧特性及组织性能［J］. 焊接学报， 2021，42（01）：70-75+102.

FANG N W， HUANG R S， YAN D J， et al. Effect of welding heatinput on microstructure and properties of MAG welded joint for low nickel high nitrogen austenitic stainless steel［J］. Transactions of the China Welding Institution，2021，42（01）：70-75+102.

方乃文，王星星，徐锴，等. 保护气体对低镍不锈钢激光-电弧复合焊电弧特性及组织性能影响［J］. 稀有金属材料与工程，2022，51（08）：3089-3094.

FANG N W， WANG X X， XU K， et al. Effect of shielding gas on arc characteristics and microstructure and properties of laser-arc hybrid welding of low nickel stainless steel［J］. Rare Metal Materials and Engineering，2022，51（08）：3089-3094.

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