WO2018196182A1 - 一种立角接双丝自动焊接方法 - Google Patents

一种立角接双丝自动焊接方法 Download PDF

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WO2018196182A1
WO2018196182A1 PCT/CN2017/093624 CN2017093624W WO2018196182A1 WO 2018196182 A1 WO2018196182 A1 WO 2018196182A1 CN 2017093624 W CN2017093624 W CN 2017093624W WO 2018196182 A1 WO2018196182 A1 WO 2018196182A1
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welding
gun
cover
torch
vertical angle
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PCT/CN2017/093624
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English (en)
French (fr)
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江泽新
吴强
张松
张勇军
邹国威
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广船国际有限公司
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    • 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
    • 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
    • B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams

Definitions

  • the invention relates to the technical field of ship manufacturing, in particular to an automatic welding method for vertical angle double wire.
  • semi-automatic CO 2 gas shielded welding is a manual operation. The welder's own skill and responsibility are high, and the slag or defects generated during the welding process must be removed. The next welding can be carried out at the rear, and the welding quality stability is relatively poor.
  • the semi-automatic CO 2 gas shielded welding is used to weld the vertical fillet weld, which is easy to cause uneven weld formation, requires a lot of grinding time, and the overall completion time is extended;
  • semi-automatic CO 2 gas shielded welding is required when the weld fillet size of the fillet weld is large or the assembly gap is large. Two or more welds are required for welding. The welding time and auxiliary time are increased, the welding efficiency is low, and labor is required. Stronger.
  • the object of the present invention is to provide an automatic welding method for the vertical angle double wire, which solves the defects of poor welding quality stability, long overall completion time, low welding efficiency and high labor intensity in the prior art.
  • the utility model relates to an automatic welding method for vertical angle and double wire, which uses a welding torch arranged at the same time to weld a vertical fillet weld at the same time.
  • the specific steps are:
  • the upper welding gun is the bottoming welding gun.
  • the angle between the bottom welding torch and the horizontal plane is 3-5 degrees.
  • the lower welding gun is the cover welding torch, and the cover welding gun is kept horizontal while ensuring the bottom welding torch.
  • the wire on the welding wire and the cover welding gun is aligned with the fillet weld center;
  • the spacing between the welding wire on the primer gun and the welding wire on the cap welding gun is set to 200-250 mm.
  • the bottoming torch has a welding current of 160-200 A and a welding voltage of 22-24 V.
  • the cover welding torch has a welding current of 160-200 A and a welding voltage of 24-26 V.
  • the welding speed of the primer gun and the face welding gun is 100-140 mm/min.
  • the cover welding gun has a swing frequency of 70-90 time/min.
  • the residence time at the left limit position and the right limit position is 0.2 s.
  • the invention provides an automatic welding method for vertical angle double wire, which is mainly used for the vertical angle joint of the ship manufacturing industry (also applicable to other steel structure industries) with a plate thickness range of 10-20 mm and an assembly gap of 0-5 mm.
  • two welding torches arranged at the same time are used to weld a vertical fillet at the same time.
  • the upper one of the welding guns is responsible for bottoming to ensure that the weld base points are fused, and the lower one is responsible for swinging the cover to ensure welding.
  • Figure 1 is a front elevational view of a primer gun and a cover welding torch provided by the present invention
  • FIG. 2 is a top plan view of a primer gun and a face welding gun provided by the present invention.
  • the invention provides an automatic welding method for vertical angle double wire, which is mainly used for the vertical angle joint of the ship manufacturing industry (also applicable to other steel structure industries) with a plate thickness range of 10-20 mm and an assembly gap of 0-5 mm.
  • two welding torches arranged at the same time are used to weld a vertical fillet at the same time.
  • the upper one of the welding guns is responsible for bottoming to ensure that the weld base points are fused, and the lower one is responsible for swinging the cover to ensure welding.
  • the seam size and good forming so as to achieve high-efficiency automatic welding of the hull structure vertical fillet with the weld foot size of 10-14mm, effectively reducing the welding, grinding time and labor intensity of the ship's construction neutral fillet weld, and improving the welding efficiency of the fillet weld And quality.
  • the specific steps of the automatic welding method for the vertical angle double wire are as follows:
  • the upper welding gun is the bottom welding torch 1.
  • the angle between the bottom welding torch 1 and the horizontal plane is 3-5 degrees
  • the lower welding gun is the cover welding torch 2
  • the cover welding torch 2 is kept horizontal, and at the same time, it is guaranteed.
  • the welding wire 3 on the bottom welding gun and the welding wire 4 on the cover welding gun are always aligned with the center of the fillet weld, and the distance between the welding wire 3 on the bottom welding torch and the welding wire 4 on the cover welding gun is set to 200-250 mm;
  • S3 Set the parameters of the two welding torches.
  • the specific parameter values are shown in Table 1.
  • the bottom welding torch 1 and the cover welding torch 2 are welded at the same time. When welding, the bottom welding torch 1 does not swing, and the cover welding torch 2 is covered with a welding torch on the horizontal surface.
  • the holding mechanism swings the shaft to the left and right to ensure a smooth transition of the weld to the base metal.
  • the vertical angle double wire automatic welding method provided by the invention has been applied on a large scale in the ship construction of our company for about 2 years. After accounting, the method has certain economic benefits in terms of cost saving, including saving grinding time, Welding man-hours, welding materials, etc.; effectively improve the welding efficiency and welding quality of the fillet welds with large weld foot size during the shipbuilding process, reduce the occurrence of weld defects, and shorten the shipbuilding period of our related products.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)

Abstract

一种立角接双丝自动焊接方法，焊接时，采用上下排布的两支焊枪同时对一道立角焊缝进行焊接，其中上面一支焊枪负责打底，保证焊缝基点熔合，下面一支焊枪负责摆动盖面，保证焊缝尺寸和良好成型，从而实现焊脚尺寸10‑14mm的船体结构立角焊缝高效自动焊接，有效降低了船舶建造中立角焊缝焊接的打磨工时及劳动强度，提高了立角焊缝焊接效率及质量。

Description

一种立角接双丝自动焊接方法 技术领域
本发明涉及船舶制造技术领域，尤其涉及一种立角接双丝自动焊接方法。
背景技术
在船舶建造过程中，尤其是货油船的建造中，经常出现长度超过10米的立角焊缝，如货油船舱壁立角焊缝，焊脚一般要求10mm以上，或者由于装配间隙较大，无法使用单道焊完成焊接的立角接接头。按照现有工艺，必须采用半自动CO2气体保护焊进行焊接，为满足焊脚尺寸要求，一般需进行两道以上的多层多道焊接。
采用半自动CO2气体保护焊进行焊接的不足之处在于：首先，半自动CO2气体保护焊属于手工操作，对于焊工本身的技能、责任心要求较高，焊接过程中产生的夹渣或者缺陷必须清除后方能进行下一道焊接，焊接质量稳定性相对较差；其次，采用半自动CO2气体保护焊进行立角焊缝的焊接，容易造成焊缝成型不均匀，需要大量打磨工时，总体完工时间延长；最后，立角焊缝焊脚尺寸要求较大或装配间隙较大时，使用半自动CO2气体保护焊，焊接时需要进行两道以上的焊接，焊接时间及辅助时间增加，焊接效率较低，劳动强度较大。
发明内容
本发明的目的在于提供一种立角接双丝自动焊接方法，以解决现有技术存在的焊接质量稳定性差、总体完工时间长、焊接效率低以及劳动强度大的缺陷。
为达此目的，本发明采用以下技术方案：
一种立角接双丝自动焊接方法，采用上下排布的两支焊枪同时对一道立角焊缝进行焊接。
作为优选，具体步骤为：
S1：调试双丝立角自动焊接小车，完成小车轨道定位；
S2：调整两支焊枪的角度，上方焊枪为打底焊枪，打底焊枪与水平面的夹角为3-5度，下方焊枪为盖面焊枪，盖面焊枪保持水平，同时保证打底焊枪上的焊丝和盖面焊枪上的焊丝对准角焊缝中心；
S3：打底焊枪与盖面焊枪同时焊接，焊接时，打底焊枪不摆动，盖面焊枪在水平面上以盖面焊枪夹持机构为轴左右摆动。
作为优选，打底焊枪上的焊丝与盖面焊枪上的焊丝之间的间距设定为200-250mm。
作为优选，所述打底焊枪的焊接电流为160-200A，焊接电压为22-24V。
作为优选，所述盖面焊枪的焊接电流为160-200A，焊接电压为24-26V。
作为优选，所述打底焊枪与盖面焊枪的焊接速度为100-140mm/min。
作为优选，所述盖面焊枪的摆动频率为70-90time/min。
作为优选，所述盖面焊枪左右摆动时，在左极限位置和右极限位置的停留时间为0.2s。
本发明的有益效果：
本发明提供一种立角接双丝自动焊接方法，主要用于船舶制造行业(也可以用于其它钢结构行业)中板厚范围为10-20mm，装配间隙为0-5mm的立角接接头的焊接，焊接时，采用上下排布的两支焊枪同时对一道立角焊缝进行焊接，其中上面一支焊枪负责打底，保证焊缝基点熔合，下面一支焊枪负责摆动盖面，保证焊缝尺寸和良好成型，从而实现焊脚尺寸为10-14mm的船体结构立角焊缝高效自动焊接，有效降低了船舶建造中立角焊缝焊接、打磨工时及劳动强度，提高了立角焊缝焊接效率及质量。
附图说明
图1是本发明提供的打底焊枪与盖面焊枪的主视图；
图2是本发明提供的打底焊枪与盖面焊枪的俯视图。
图中：
1-打底焊枪；2-盖面焊枪；3-打底焊枪上的焊丝；4-盖面焊枪上的焊丝。
具体实施方式
为使本发明解决的技术问题、采用的技术方案和达到的技术效果更加清楚，下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
本发明提供一种立角接双丝自动焊接方法，主要用于船舶制造行业(也可以用于其它钢结构行业)中板厚范围为10-20mm，装配间隙为0-5mm的立角接接头的焊接，焊接时，采用上下排布的两支焊枪同时对一道立角焊缝进行焊接，其中上面一支焊枪负责打底，保证焊缝基点熔合，下面一支焊枪负责摆动盖面，保证焊缝尺寸和良好成型，从而实现焊脚尺寸10-14mm的船体结构立角焊缝高效自动焊接，有效降低了船舶建造中立角焊缝焊接、打磨工时及劳动强度，提高了立角焊缝焊接效率及质量。
参见图1和图2，在本实施例中，该立角接双丝自动焊接方法的具体步骤为：
S1：调试双丝立角自动焊接小车，根据焊接接头具体情况，完成小车轨道定位等工作，接通小车电源，焊接小车沿轨道立向上行走，根据焊丝位置及时调整小车轨道，保证焊丝始终对准角焊缝中心，焊枪干伸长15-20mm；
S2：调整两支焊枪的角度，上方焊枪为打底焊枪1，打底焊枪1与水平面的夹角为3-5度，下方焊枪为盖面焊枪2，盖面焊枪2保持水平，同时保证打底焊枪上的焊丝3与盖面焊枪上的焊丝4始终对准角焊缝中心，打底焊枪上的焊丝3与盖面焊枪上的焊丝4之间的间距设定为200-250mm；
S3：设置两支焊枪的参数，具体参数值见表一，打底焊枪1与盖面焊枪2同时焊接，焊接时，打底焊枪1不摆动，盖面焊枪2在水平面上以盖面焊枪夹持机构为轴左右摆动，保证焊缝到母材的圆滑过渡。
表一焊枪参数
Figure PCTCN2017093624-appb-000001
立角焊时熔融金属受重力作用会下沉，使得焊缝出现上凹下凸的情况，影响焊缝的美观。尤其是打底焊道，焊接时焊枪不进行左右摆动，使用普通药芯焊丝易造成焊缝成型不良，为此双丝自动立角焊需要用立角焊专用药芯焊丝(牌号：DW110EV，规格Φ1.2mm)，保证焊缝良好成形。
本发明提供的立角接双丝自动焊接方法，已在我司船舶建造中大规模应用约2年时间，经核算，本方法在成本节约方面，产生了一定的经济效益，包括节约打磨工时、焊接工时、焊接材料等；有效提高了船舶建造过程中焊脚尺寸较大的立角焊缝的焊接效率和焊接质量，降低了焊缝缺陷的发生几率，缩短了我司相关产品船建造周期。
显然，本发明的上述实施例仅仅是为了清楚说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (8)

  1. 一种立角接双丝自动焊接方法，其特征在于，采用上下排布的两支焊枪同时对一道立角焊缝进行焊接。
  2. 根据权利要求1所述的立角接双丝自动焊接方法，其特征在于，具体步骤为：
    S1：调试双丝立角自动焊接小车，完成小车轨道定位；
    S2：调整两支焊枪的角度，上方焊枪为打底焊枪，打底焊枪与水平面的夹角为3-5度，下方焊枪为盖面焊枪，盖面焊枪保持水平，同时保证打底焊枪上的焊丝和盖面焊枪上的焊丝对准角焊缝中心；
    S3：打底焊枪与盖面焊枪同时焊接，焊接时，打底焊枪不摆动，盖面焊枪在水平面上以盖面焊枪夹持机构为轴左右摆动。
  3. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，打底焊枪上的焊丝与盖面焊枪上的焊丝之间的间距设定为200-250mm。
  4. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，所述打底焊枪的焊接电流为160-200A，焊接电压为22-24V。
  5. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，所述盖面焊枪的焊接电流为160-200A，焊接电压为24-26V。
  6. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，所述打底焊枪与盖面焊枪的焊接速度为100-140mm/min。
  7. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，所述盖面焊枪的摆动频率为70-90time/min。
  8. 根据权利要求2所述的立角接双丝自动焊接方法，其特征在于，所述盖面焊枪左右摆动时，在左极限位置和右极限位置的停留时间为0.2s。
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CN110640272B (zh) * 2019-09-30 2021-09-14 广州黄船海洋工程有限公司 带车间底漆的低合金高强度钢角焊缝的双侧双丝气体保护焊工艺
CN110681954A (zh) * 2019-10-30 2020-01-14 广船国际有限公司 薄板立位置填角焊缝装配方法
CN113814524A (zh) * 2021-09-30 2021-12-21 沪东中华造船(集团)有限公司 一种低碳中合金调质高强钢不摆动立角焊方法

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