CN105081530B - 一种高强度桥梁钢槽口围焊缝气保护焊接方法 - Google Patents

一种高强度桥梁钢槽口围焊缝气保护焊接方法 Download PDF

Info

Publication number
CN105081530B
CN105081530B CN201510605200.4A CN201510605200A CN105081530B CN 105081530 B CN105081530 B CN 105081530B CN 201510605200 A CN201510605200 A CN 201510605200A CN 105081530 B CN105081530 B CN 105081530B
Authority
CN
China
Prior art keywords
welding
weld
gas
steel
strength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510605200.4A
Other languages
English (en)
Other versions
CN105081530A (zh
Inventor
缪凯
李方敏
魏振鑫
牟文广
王辉
郑江鹏
郭红艳
周运武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Iron and Steel Co Ltd
China State Railway Group Co Ltd
China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
China Railway Jiujiang Bridge Engineering Co Ltd
Original Assignee
Wuhan Iron and Steel Group Corp
China Railway Corp
China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
China Railway Jiujiang Bridge Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Iron and Steel Group Corp, China Railway Corp, China Railway Major Bridge Reconnaissance and Design Institute Co Ltd, China Railway Jiujiang Bridge Engineering Co Ltd filed Critical Wuhan Iron and Steel Group Corp
Priority to CN201510605200.4A priority Critical patent/CN105081530B/zh
Publication of CN105081530A publication Critical patent/CN105081530A/zh
Application granted granted Critical
Publication of CN105081530B publication Critical patent/CN105081530B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B23K35/0266—Rods, electrodes, wires flux-cored
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/3066—Fe as the principal constituent with Ni as next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/3073—Fe as the principal constituent with Mn as next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)

Abstract

一种高强度桥梁钢槽口围焊缝气保护焊接方法：基材力学性能：Rm为640~690MPa、ReL530~590，延伸率：22~26 %，‑40℃KV2冲击功：270~290 J；钢板厚度为40mm+56 mm+40 mm组合焊接；坡口为单K型对称坡口，坡口角度为50°，钝边为2mm；匹配的药芯焊丝为CJ651Ni‑QL，其直径Ф1.2mm；在焊接电流240~260A、焊接电压28~29V、焊接速度18~20m/h、焊接线能量12~15kj/cm、采用CO2作保护气体条件下，连续施焊直至焊缝填满。本发明采用不同厚板及CO2气保护焊接工艺与匹配材料，并在焊前不预热、焊后不热处理下，保证了焊接过程中大型钢结构不产生开裂。

Description

一种高强度桥梁钢槽口围焊缝气保护焊接方法
技术领域
本发明涉及一种Q500qE高强度桥梁钢槽口围焊缝气保对接焊接工艺方法，适用于焊接抗拉强度Rm≥630MPa级别高强度桥梁工程槽口围焊缝接头厚板结构用钢。
背景技术
我国在建的沪通长江大桥是一座6线公路、4线铁路的大跨度公、铁两用桥梁，其主桥采用跨度为1092米的公铁两用斜拉桥，建成后的沪通大桥将成为目前世界上跨度最大的公、铁两用桥。为适应我国桥梁建设向高强、大跨、重载、高速方面发展的要求，武钢（集团）公司为该桥开发研制了我国新一代高强度、高韧性桥梁用钢Q500qE，其综合力学性能达到了国外同类钢种水平，尤其是在提高强度的同时低温冲击韧性也有较大的提高。基材性能的提高对与之相匹配的焊接材料及焊接工艺提出了迫切的要求。因此，如不及时有效地解决大跨度桥梁钢种的焊接性及配套焊接材料和焊接工艺问题，将会直接阻碍我国桥梁钢及新钢种的推广应用。加快开展大跨度桥梁用钢焊接工艺及配套焊接材料研究，对我国桥梁用钢在大跨度厚板桥梁结构制造技术的推广应用有重大经济效益及社会效益。
已公开的中国专利号为CN201310282937.8 的《屈服强度大于500MPa级桥梁钢CO2气保焊接方法》专利文献，其适用的基板性能：ReL≥500MPa，Rm≥650MPa，A≥18%，-40℃KV2≥120J；板厚组合为32mm等厚；焊接坡口形式为双面V型对称，坡口角度为60°，钝边1mm；匹配焊丝的抗拉强度≥700MPa，焊丝直径Ф1.2mm；焊接：电流266~280A，电压26~27V，速度29~26cm/min，线能量14~17kj/cm，其核心区别是富氩气体与实芯焊丝，采用多层多道连续施焊。而本发明焊接材料为：药芯气保护焊丝CJ651Ni-QL与CO2保护气体，其熔敷金属抗拉强度Rm：577MPa，ReL：635MPa，A：23%，药芯气保护焊丝直径Φ1.2mm。
对于大跨度高强度桥梁槽口围结构的建造，其解决的关键问题是在保证安全服役的前提下，焊接后结构不变形、无裂纹产生，接头具有优良力学性能及低温韧性。然而众所周知，随着建桥基材的强度的增加，尤其从目前的Q370qE、Q420qE提高到Q500qE，在焊前不预热，焊后不热处理的情况下，保证焊接过程中大型钢结构防裂、防断成为制造过程的首要关键技术。而对于大型钢结构制造过程进行焊前预热，焊后热处理意味着施工环境、制造成本及制造周期的困难，无法满足施工的技术要求。
发明内容
本发明的目的在于提出一种高强度桥梁钢不同厚板槽口围接头CO2气保护焊关键焊接工艺，其主要解决的问题是高强度桥梁钢不同厚板槽口围接头，采用CO2气保护焊接工艺与匹配材料，并在焊前不预热、焊后不进行热处理的条件下，保证焊接过程中大型钢结构不会产生开裂的气保焊接工艺方法。
实现上述目的措施
一种高强度桥梁钢槽口围焊缝气保护焊接方法，其步骤：
1）基材力学性能：抗拉强度Rm为640 ~690MPa、屈服强度ReL530~590，延伸率A：22~26 %，-40℃KV2冲击功：270~290 J；钢板厚度为40mm+56 mm+40 mm的不等厚桥梁钢；
2）坡口采用单K型对称坡口，坡口角度为50°，钝边为2mm；
3）匹配的药芯焊丝为CJ651Ni-QL焊丝，其抗拉强度不低于630 MPa，焊丝直径Ф1.2mm；
4）焊接工艺：在焊接电流240~260A、焊接电压28~29V、焊接速度18~20m/h、焊接线能量12~15kj/cm、采用CO2作保护气体且其流量控制在18~20L/min的条件下连续施焊，以使焊缝填满为止，层间温度控制在100~120℃。
其在于：所采用药芯焊丝熔敷的化学组分及重量百分比为：C≤0.10、Si ≤0.80、Mn ：1.0~1.60、Ni :0.80~1.70、P ≤0.015、S ≤0.010，其余为铁及不可避免的杂质。
本发明具有如下优点：
（1）满足了我国大跨、重载、高速公铁两用桥梁钢不同厚板气保护焊接工艺要求，气保护焊接头抗拉强度、冲击功达到较高水平，接头具有较高的冲击韧性储备及安全裕度。
（2）气保护焊接头过热区主要为贝氏体组织，焊缝金属主要为细小的针状铁素体组织，从而使焊缝具有优良的低温冲击韧性及抗裂性能。
（3）实现了高强度桥梁钢不同厚板槽口围焊缝结构制造过程焊前不预热、焊后不进行热处理的焊接工艺，采用多层多道连续施焊工艺时焊缝仍具有较高的冲击功。
且操作简便、适用方便、高效、节能、并且适用工厂大跨度桥梁钢制造推广应用。
附图说明
附图为本发明槽口围接头坡口图。
具体实施方式
下面对本发明予以详细描述：
本发明以下各实施例的基材，均采用：
1）基材Q500qE桥梁钢板，其力学性能：抗拉强度Rm为640 ~690MPa、屈服强度ReL530~590，延伸率A：22~26 %，-40℃KV2冲击功：270~290 J；钢板厚度为40mm+56 mm+40 mm；
2）坡口采用单K型对称坡口，坡口角度为50°，钝边为2mm；
3）匹配的药芯焊丝为CJ651Ni-QL焊丝，其抗拉强度不低于630 MPa，焊丝直径Ф1.2mm，焊丝的熔敷金属的力学性能为Rel为577MPa，Rm为635 MPa，A为23%，-40℃KV2冲击功为179J；其熔敷的化学组分及重量百分比为：C≤0.10、Si ≤0.80、Mn ：1.0~1.60、Ni :0.80~1.70、P ≤0.015、S ≤0.010，其余为铁及不可避免的杂质。
实施例1：
其焊接工艺：
在焊接电流240A、焊接电压28V、焊接速度20m/h、焊接线能量12kj/cm、采用CO2作保护气体且其流量控制在20L/min的条件下连续施焊，以使焊缝填满为止，层间温度控制在120℃。
经对其焊接接头进行检测，其力学性能：焊缝抗拉强度Rm 为662MPa，焊缝屈服强度Rel为577MPa，延伸率A：21%，焊缝冲击功-40℃KV2为134J ，热影响区（1mm）-40℃KV2为117J，其完全满足大跨、重载、高速公铁两用桥梁的要求。
实施例2：
其焊接工艺：
在焊接电流260A、焊接电压29V、焊接速度18m/h、焊接线能量15kj/cm、采用CO2作保护气体且其流量控制在20L/min的条件下连续施焊，以使焊缝填满为止，层间温度控制在110℃。
经对其焊接接头进行检测，其力学性能：焊缝抗拉强度Rm 为652MPa，焊缝屈服强度Rel为610MPa，延伸率A：22%，焊缝冲击功-40℃KV2为144J ，热影响区（1mm）-40℃KV2为137J，其完全满足大跨、重载、高速公铁两用桥梁的要求。
实施例3：
其焊接工艺：
在焊接电流252A、焊接电压29V、焊接速度14m/h、焊接线能量13kj/cm、采用CO2作保护气体且其流量控制在19L/min的条件下连续施焊，以使焊缝填满为止，层间温度控制在102℃。
经对其焊接接头进行检测，其力学性能：焊缝抗拉强度Rm 为659MPa，焊缝屈服强度Rel为616MPa，延伸率A：23%，焊缝冲击功-40℃KV2为142J ，热影响区（1mm）-40℃KV2为141J，其完全满足大跨、重载、高速公铁两用桥梁的要求。
本具体实施方式仅为最佳例举，并非对本发明技术方案的限制性实施。

Claims (1)

1.一种高强度桥梁钢槽口围焊缝气保护焊接方法，其步骤：
1）基材力学性能：抗拉强度Rm为640 ~690MPa、屈服强度ReL530~590，延伸率A：22~26%，-40℃KV2冲击功：270~290 J；钢板厚度为40mm+56 mm+40 mm的不等厚桥梁钢；
2）坡口采用单K型对称坡口，坡口角度为50°，钝边为2mm；
3）匹配的药芯焊丝为CJ651Ni-QL焊丝，其抗拉强度不低于630 MPa，焊丝直径Ф1.2mm；
4）焊接工艺：在焊接电流240A、焊接电压28V、焊接速度20m/h、焊接线能量12kj/cm、采用CO2作保护气体且其流量控制在20L/min的条件下连续施焊，以使焊缝填满为止，层间温度控制在120℃；
所述药芯焊丝的熔敷的化学组分及重量百分比为：C≤0.10、Si ≤0.80、Mn ：1.0~1.60、Ni :0.80~1.70、P ≤0.015、S ≤0.010，其余为铁及不可避免的杂质。
CN201510605200.4A 2015-09-22 2015-09-22 一种高强度桥梁钢槽口围焊缝气保护焊接方法 Expired - Fee Related CN105081530B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510605200.4A CN105081530B (zh) 2015-09-22 2015-09-22 一种高强度桥梁钢槽口围焊缝气保护焊接方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510605200.4A CN105081530B (zh) 2015-09-22 2015-09-22 一种高强度桥梁钢槽口围焊缝气保护焊接方法

Publications (2)

Publication Number Publication Date
CN105081530A CN105081530A (zh) 2015-11-25
CN105081530B true CN105081530B (zh) 2017-11-07

Family

ID=54563346

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510605200.4A Expired - Fee Related CN105081530B (zh) 2015-09-22 2015-09-22 一种高强度桥梁钢槽口围焊缝气保护焊接方法

Country Status (1)

Country Link
CN (1) CN105081530B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109759679B (zh) * 2019-03-22 2022-01-11 中铁宝桥集团有限公司 一种Q500qE和Q690qE超低碳贝氏体钢异种对接接头的焊接方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367153B (zh) * 2008-07-14 2011-06-15 武汉钢铁(集团)公司 高强度桥梁钢气保护焊接方法
JP5521632B2 (ja) * 2009-02-25 2014-06-18 Ｊｆｅスチール株式会社 厚鋼板の溶接方法
CN101549429A (zh) * 2009-05-19 2009-10-07 武汉钢铁(集团)公司 一种用于高强度桥梁钢厚板k型接头气保焊接方法

Also Published As

Publication number Publication date
CN105081530A (zh) 2015-11-25

Similar Documents

Publication Publication Date Title
CN105081531B (zh) 一种高强度桥梁钢k型接头气保对接焊接方法
CN103317220B (zh) 屈服强度≥500MPa级桥梁钢大线能量埋弧焊接方法
CN105127558B (zh) 一种高强度桥梁钢k型接头复合焊接方法
CN101367153B (zh) 高强度桥梁钢气保护焊接方法
CN101658970B (zh) 一种抗拉强度大于690MPa级别桥梁钢对接埋弧焊接方法
CN101513695B (zh) 一种桥梁用Q420qE级超低碳贝氏体钢的焊接方法
CN101564791B (zh) 一种高强度压力容器用钢的埋弧焊接方法
CN101905365B (zh) 一种超厚度高强水电用钢的焊接方法
CN109128550A (zh) 一种抗拉强度Rm≥810MPa桥梁钢气保护焊接方法
CN102363238B (zh) 一种低温海工用厚板埋弧焊焊接工艺
CN103894710A (zh) 一种高强度级别Q500qE桥梁钢厚板埋弧焊接方法
CN108746945B (zh) 一种抗拉强度≥810MPa桥梁钢厚板埋弧复合焊接方法
CN102773616B (zh) 一种高强度低屈强比桥梁钢的复合焊接方法
CN102101210A (zh) 一种610MPa水电站压力钢管用高强钢焊接方法
CN101342630B (zh) 高强度桥梁钢t型接头埋弧焊焊接方法
CN102784998A (zh) 80毫米厚高强度桥梁钢对接手工焊接的方法
CN101337301A (zh) 一种不同强度级别桥梁钢埋弧焊接的方法
CN103406638B (zh) 屈服强度≥500MPa级桥梁钢手工焊接方法
CN108747072A (zh) 一种抗拉强度≥810MPa桥梁钢厚板大线能量埋弧复合焊接方法
CN110666298A (zh) 一种高性能耐候桥梁钢全熔透t型接头复合焊方法
CN103934552A (zh) 抗拉强度≥650MPa级工程结构用钢埋弧对接焊接方法
CN102785013B (zh) 80毫米厚高强度桥梁钢气保对接焊接的方法
CN101549429A (zh) 一种用于高强度桥梁钢厚板k型接头气保焊接方法
CN105081530B (zh) 一种高强度桥梁钢槽口围焊缝气保护焊接方法
CN102990203B (zh) 一种80mm厚E36海洋工程用钢的药芯焊丝气体保护焊焊接工艺

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20171106

Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2

Co-patentee after: CHINA RAILWAY Corp.

Patentee after: WUHAN IRON AND STEEL Co.,Ltd.

Co-patentee after: CHINA RAILWAY MAJOR BRIDGE RECONNAISSANCE & DESIGN INSTITUTE Co.,Ltd.

Co-patentee after: CHINA RAILWAY JIUJIANG BRIDGE ENGINEERING Co.,Ltd.

Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang

Co-patentee before: CHINA RAILWAY Corp.

Patentee before: WUHAN IRON AND STEEL (GROUP) Corp.

Co-patentee before: CHINA RAILWAY MAJOR BRIDGE RECONNAISSANCE & DESIGN INSTITUTE Co.,Ltd.

Co-patentee before: CHINA RAILWAY JIUJIANG BRIDGE ENGINEERING Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171107