CN117564406A - Welding process of square welded pipe box - Google Patents
Welding process of square welded pipe box Download PDFInfo
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- CN117564406A CN117564406A CN202311856332.5A CN202311856332A CN117564406A CN 117564406 A CN117564406 A CN 117564406A CN 202311856332 A CN202311856332 A CN 202311856332A CN 117564406 A CN117564406 A CN 117564406A
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- 238000003466 welding Methods 0.000 title claims abstract description 257
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 77
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 27
- 239000010937 tungsten Substances 0.000 claims abstract description 27
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052786 argon Inorganic materials 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract 2
- 230000008018 melting Effects 0.000 claims abstract 2
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- IADRPEYPEFONML-UHFFFAOYSA-N [Ce].[W] Chemical compound [Ce].[W] IADRPEYPEFONML-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
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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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- 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
- B23K9/095—Monitoring or automatic control of welding parameters
-
- 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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/18—Submerged-arc welding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
本发明公开了一种方形焊接管箱的焊接工艺，涉及焊接技术领域，包括以下步骤：S1、焊枪设置：采用钨极氩弧焊焊枪、熔化极气体保护焊焊枪和埋弧焊焊枪，钨极氩弧焊焊枪、熔化极气体保护焊焊枪和埋弧焊焊枪依次装在同一焊接平台上，且处于同一直线上，平台设置在滑轨上；S2、钨极氩弧焊焊接：对于方形管箱外侧进行施焊；S3、熔化极气体保护焊焊接：对于焊接位置处进行二次焊接；S4、埋弧焊焊接：对于焊接位置处进行第三次焊接。本发明优点在于，保证焊接操作人员能够清晰观察熔池，避免因无法近距离观察焊接区域而出现的各种焊接缺陷，提高焊接质量；钨极氩弧焊单面焊双面成形可省去接头外侧清根打磨的工序，节约生产制造成本。
The invention discloses a welding process for a square welded pipe box, which relates to the field of welding technology and includes the following steps: S1. Welding gun setting: using a tungsten electrode argon arc welding gun, a melting arc gas shielded welding gun and a submerged arc welding gun. The argon arc welding gun, gas metal arc welding gun and submerged arc welding gun are installed on the same welding platform in sequence, and are on the same straight line, and the platform is set on the slide rail; S2, tungsten arc welding: for square pipe boxes Welding is carried out on the outside; S3, gas metal arc welding: perform the second welding on the welding position; S4, submerged arc welding: perform the third welding on the welding position. The advantage of this invention is that it ensures that welding operators can clearly observe the molten pool, avoids various welding defects due to the inability to observe the welding area at close range, and improves welding quality; single-sided welding and double-sided forming of tungsten electrode argon arc welding can eliminate the need for joints The process of root cleaning and grinding on the outside saves production and manufacturing costs.
Description
技术领域Technical field
本发明涉及焊接工艺技术领域，具体为一种方形焊接管箱的焊接工艺。The invention relates to the technical field of welding technology, specifically a welding technology for square welded pipe boxes.
背景技术Background technique
对于空冷器方形焊接管进行焊接，由于该类方形焊接管箱内部尺寸仅为110mmx169mm，长度约为3000mm左右，无法从内部进行焊接，为保证管箱焊缝全焊透，现有工艺方法为：For the welding of square welded pipes for air coolers, since the internal dimensions of this type of square welded pipe box are only 110mmx169mm and the length is about 3000mm, it cannot be welded from the inside. In order to ensure full penetration of the pipe box welds, the existing process method is:
首先先用长两米左右的定制二氧化碳气体保护加长焊枪伸进管箱内，再次在管箱外侧用碳弧气刨清焊根，直至露出背面层焊缝为止，最后打磨去除氧化层，直到露出材料金属光泽，使用常规二氧化碳气体保护焊枪填充盖面。First, use a custom-made carbon dioxide gas shielded extended welding gun about two meters long to extend into the pipe box, and then use a carbon arc gas to gouge the welding root on the outside of the pipe box until the back layer of weld is exposed. Finally, polish to remove the oxide layer until it is exposed. The material has a metallic luster, and a conventional carbon dioxide gas shielded welding gun is used to fill the cover.
焊接方形管箱内侧层时，操作人员距离实际焊接区域最大有1500mm左右的距离，无法靠近焊接区域，无法观察熔池，此时焊接质量无法保证，容易出现未熔合、气孔、咬边、焊缝成形不良等缺陷；When welding the inner layer of a square pipe box, the operator is at most about 1500mm away from the actual welding area. He cannot get close to the welding area and cannot observe the molten pool. At this time, the welding quality cannot be guaranteed, and unfusion, pores, undercuts, and weld seams are prone to occur. Defects such as poor forming;
接头外侧需碳弧气刨清根并打磨，耗时耗力，工序多效率低；The outside of the joint needs carbon arc gouging and grinding, which is time-consuming and labor-intensive, with multiple processes and low efficiency;
常规的单一的二氧化碳气体保护焊焊接，需多层依次焊接，效率低。Conventional single carbon dioxide gas shielded welding requires multiple layers to be welded in sequence, which is inefficient.
发明内容Contents of the invention
针对现有技术存在的不足，本发明目的是提供一种方形焊接管箱的焊接工艺。In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a welding process for square welded pipe boxes.
为了实现上述目的，本发明是技术方案如下：In order to achieve the above objects, the technical solutions of the present invention are as follows:
一种方形焊接管箱的焊接工艺，包括以下步骤：A welding process for square welded pipe boxes includes the following steps:
S1、焊枪设置：采用钨极氩弧焊焊枪、熔化极气体保护焊焊枪和埋弧焊焊枪，钨极氩弧焊焊枪、熔化极气体保护焊焊枪和埋弧焊焊枪依次装在同一焊接平台上，且处于同一直线上，平台设置在滑轨上；S1. Welding gun setting: Use tungsten arc welding gun, gas metal arc welding gun and submerged arc welding gun. The tungsten arc welding gun, gas metal arc welding gun and submerged arc welding gun are installed on the same welding platform in sequence. , and are on the same straight line, and the platform is set on the slide rail;
S2、钨极氩弧焊焊接：对于方形管箱外侧进行施焊；S2. Tungsten argon arc welding: welding on the outside of the square pipe box;
S3、熔化极气体保护焊焊接：对于焊接位置处进行二次焊接；S3. Gas metal arc welding: perform secondary welding at the welding position;
S4、埋弧焊焊接：对于焊接位置处进行第三次焊接。S4. Submerged arc welding: Carry out the third welding at the welding position.
优选的，所述方形管箱包括盖板和管板，盖板侧坡口角度为30°，钝边0mm；管板侧坡口角度为30°，坡口深度为14mm，然后在坡口根部开宽度3mm，深度3mm的圆形槽；两者组装后坡口角度为60°，根部间隙为0-1mm。Preferably, the square pipe box includes a cover plate and a tube plate. The cover plate side bevel angle is 30° and the blunt edge is 0mm; the tube plate side bevel angle is 30° and the bevel depth is 14mm. Then at the root of the bevel Open a circular groove with a width of 3mm and a depth of 3mm; after the two are assembled, the bevel angle is 60° and the root gap is 0-1mm.
优选的，所述钨极氩弧焊采用1.2mm的ER50-6实芯焊丝，99.99％纯度的氩气，氩气流量为18-20L/Min，背面保护气流量为14-16L/Min，直径3.2mm的铈钨极，钨极端部距接头坡口根部2.5-3.5mm，焊丝端部距离接头坡口根部0.8-1.2mm，焊接电流为200-220A，焊接速度为350-400mm/Min，送丝速度为1100-1200mm/Min。Preferably, the tungsten argon arc welding uses 1.2mm ER50-6 solid core welding wire, 99.99% purity argon gas, argon gas flow rate is 18-20L/Min, back side protective gas flow rate is 14-16L/Min, diameter 3.2mm cerium tungsten electrode, the distance between the tungsten tip and the root of the joint groove is 2.5-3.5mm, the distance between the end of the welding wire and the root of the joint groove is 0.8-1.2mm, the welding current is 200-220A, the welding speed is 350-400mm/Min, delivered The wire speed is 1100-1200mm/Min.
优选的，所述熔化极气体保护焊采用直径1.2mm的ER50-6实芯焊丝，使用80％氩气与20％二氧化碳的混合气，气体流量为22L/Min，焊丝端部距离接头坡口根部6-8mm，干伸长度15mm，焊接电流为240-260A，焊接速度为350-400mm/Min。Preferably, the gas metal arc welding uses ER50-6 solid core welding wire with a diameter of 1.2mm, using a mixture of 80% argon and 20% carbon dioxide, the gas flow is 22L/Min, and the distance between the end of the welding wire and the root of the joint groove is 6-8mm, dry extension 15mm, welding current 240-260A, welding speed 350-400mm/Min.
优选的，所述埋弧焊采用直径为4mm的H10Mn2焊丝，匹配焊剂为SJ101，焊剂烘干温度为350℃，烘干时间2小时，焊丝端部距离坡口根部11-13mm，焊接电流为550-600A，焊接速度为350-400mm/Min。Preferably, the submerged arc welding uses H10Mn2 welding wire with a diameter of 4mm, the matching flux is SJ101, the flux drying temperature is 350°C, the drying time is 2 hours, the distance between the end of the welding wire and the root of the groove is 11-13mm, and the welding current is 550 -600A, welding speed is 350-400mm/Min.
优选的，两两焊枪中心距离设置为200mm。Preferably, the distance between the centers of two welding guns is set to 200mm.
优选的，所述方形焊接管箱的焊接工艺的焊接工装包括钨极氩弧焊焊枪、熔化极气体保护焊焊枪和埋弧焊焊枪；Preferably, the welding tooling for the welding process of the square welded pipe box includes a tungsten arc welding gun, a gas metal arc welding gun and a submerged arc welding gun;
所述钨极氩弧焊焊枪上位于枪头端部设有钨极氩弧焊送丝装置，所述熔化极气体保护焊焊枪上连接有熔化极气体保护焊送丝装置，所述埋弧焊焊枪连接埋弧焊送丝装置，所述埋弧焊焊枪一侧设有输送焊剂的埋弧焊焊剂料斗；The gas tungsten arc welding gun is provided with a gas tungsten arc welding wire feeding device at the end of the gun head, the gas metal arc welding gun is connected to a gas metal arc welding wire feeding device, and the submerged arc welding gun The welding gun is connected to the submerged arc welding wire feeding device, and one side of the submerged arc welding gun is provided with a submerged arc welding flux hopper for transporting flux;
还包括伸入到方形焊接管箱内部的钨极氩弧焊背面气体保护装置，所述钨极氩弧焊背面气体保护装置固定在背面气体保护装置支撑板，所述背面气体保护装置支撑板连接背面气体保护装置固定支座。It also includes a tungsten argon arc welding back gas protection device that extends into the square welding pipe box. The tungsten argon arc welding back gas protection device is fixed on the back gas protection device support plate, and the back gas protection device support plate is connected Fixed support for gas protection device on the back.
与现有技术相比，本发明的有益效果为：Compared with the prior art, the beneficial effects of the present invention are:
1、保证焊接操作人员能够清晰观察熔池，避免因无法近距离观察焊接区域而出现的各种焊接缺陷，提高焊接质量；1. Ensure that welding operators can clearly observe the molten pool, avoid various welding defects caused by the inability to observe the welding area at close range, and improve welding quality;
2、钨极氩弧焊单面焊双面成形可省去接头外侧清根打磨的工序，节约生产制造成本，节省生产时间；2. Single-sided welding and double-sided forming by tungsten argon arc welding can save the process of root cleaning and grinding on the outside of the joint, saving manufacturing costs and production time;
3、钨极氩弧焊、熔化极气体保护焊和埋弧焊三种焊接方法联用可提高生产效率。3. The combination of three welding methods: tungsten arc welding, gas metal arc welding and submerged arc welding can improve production efficiency.
附图说明Description of the drawings
参照附图来说明本发明的公开内容。应当了解，附图仅仅用于说明目的，而并非意在对本发明的保护范围构成限制，在附图中，相同的附图标记用于指代相同的部件。其中：The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention, and in the drawings, like reference numerals are used to refer to like parts. in:
图1为本发明方形焊接管箱焊接时的示意图。Figure 1 is a schematic diagram of the square welded pipe box during welding according to the present invention.
图中标注说明：1、钨极氩弧焊背面气体保护装置；2、钨极氩弧焊送丝装置；3、背面气体保护装置支撑板；4、背面气体保护装置固定支座；5、钨极氩弧焊焊枪；6、熔化极气体保护焊焊枪；7、熔化极气体保护焊送丝装置；8、输送焊剂的埋弧焊焊剂料斗；9、埋弧焊送丝装置；10、埋弧焊焊枪；11、工件。Notes in the figure: 1. Back gas protection device for tungsten arc welding; 2. Wire feeding device for tungsten arc welding; 3. Support plate for back gas protection device; 4. Fixed support for back gas protection device; 5. Tungsten TIG welding gun; 6. Gas metal arc welding gun; 7. Gas metal arc welding wire feeding device; 8. Submerged arc welding flux hopper for transporting flux; 9. Submerged arc welding wire feeding device; 10. Submerged arc welding Welding gun; 11. Workpiece.
具体实施方式Detailed ways
容易理解，根据本发明的技术方案，在不变更本发明实质精神下，本领域的一般技术人员可以提出可相互替换的多种结构方式以及实现方式。因此，以下具体实施方式以及附图仅是对本发明的技术方案的示例性说明，而不应当视为本发明的全部或者视为对本发明技术方案的限定或限制。It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose various structural methods and implementation methods that can be replaced with each other. Therefore, the following specific embodiments and drawings are only illustrative descriptions of the technical solutions of the present invention, and should not be regarded as the entirety of the present invention or as limitations or restrictions on the technical solutions of the present invention.
如图1所示，作为本发明的一种方形焊接管箱的焊接工艺，其特征在于：包括以下步骤：As shown in Figure 1, as a welding process of a square welded pipe box of the present invention, it is characterized by: including the following steps:
S1、焊枪设置：采用钨极氩弧焊焊枪5、熔化极气体保护焊焊枪6和埋弧焊焊枪10，钨极氩弧焊焊枪5、熔化极气体保护焊焊枪6和埋弧焊焊枪10依次装在同一焊接平台上，且处于同一直线上，平台设置在滑轨上；S1. Welding gun settings: Use TIG welding gun 5, MIG welding gun 6 and submerged arc welding gun 10. TIG welding gun 5, MIG welding gun 6 and submerged arc welding gun 10 in sequence. Installed on the same welding platform and on the same straight line, the platform is set on the slide rail;
S2、钨极氩弧焊焊接：对于方形管箱外侧进行施焊；S2. Tungsten argon arc welding: welding on the outside of the square pipe box;
S3、熔化极气体保护焊焊接：对于焊接位置处进行二次焊接；S3. Gas metal arc welding: perform secondary welding at the welding position;
S4、埋弧焊焊接：对于焊接位置处进行第三次焊接。S4. Submerged arc welding: Carry out the third welding at the welding position.
方形管箱包括盖板和管板，盖板侧坡口角度为30°，钝边0mm；管板侧坡口角度为30°，坡口深度为14mm，然后在坡口根部开宽度3mm，深度3mm的圆形槽；两者组装后坡口角度为60°，根部间隙为0-1mm，可使得方形管箱的便于进行外部焊接操作，在焊接的过程中方便进行观察，同时可使得焊接的效果更好，整体焊接过程平稳有序。The square pipe box includes a cover plate and a tube plate. The side groove angle of the cover plate is 30° and the blunt edge is 0mm. The side groove angle of the tube plate is 30° and the depth of the groove is 14mm. Then, the width and depth of the groove root are 3mm. 3mm circular groove; after the two are assembled, the bevel angle is 60° and the root gap is 0-1mm, which makes the square pipe box convenient for external welding operations, convenient for observation during the welding process, and at the same time makes the welding The effect is better, and the overall welding process is smooth and orderly.
坡口根部的圆形槽，使得单面焊双面成形技术在这种接头型式中更有利于成功实施，形成质量合格的打底焊缝，相比现有的使用加长枪盲目焊接，质量更可靠；The circular groove at the root of the groove makes the single-sided welding and double-sided forming technology more conducive to the successful implementation of this joint type, forming a quality base weld. Compared with the existing blind welding using an extension gun, the quality is better reliable;
所有焊缝都在方形管箱外侧施焊，比之前减少了清根打磨时间，整体时间能节约30-40％；三枪同时作业，按焊缝长3000mm计，从第一把枪开始焊接到最后把枪结束焊接，最大行程为3400mm，按最慢焊接速度350mm/Min计，焊接时长约为10分钟。用之前的工艺方法时，焊缝长为3000mm，内外侧共焊接三层，焊接速度按最快400mm/Min计，单层焊道用时为7.5分钟，焊接总时长约为22.5分钟。相比之下新的工艺方法在纯焊接时间上比之前节约了55％的时间All welds are welded on the outside of the square pipe box, which reduces the root cleaning and polishing time than before, and the overall time can be saved by 30-40%; three guns operate at the same time, based on the weld length of 3000mm, welding starts from the first gun to Finally, the gun is used for welding. The maximum stroke is 3400mm. Based on the slowest welding speed of 350mm/Min, the welding time is about 10 minutes. When using the previous process method, the weld length is 3000mm, and there are three layers welded on the inside and outside. The welding speed is based on the fastest 400mm/Min. The single-layer welding time is 7.5 minutes, and the total welding time is about 22.5 minutes. In contrast, the new process method saves 55% of the pure welding time compared to the previous one.
钨极氩弧焊采用1.2mm的ER50-6实芯焊丝，99.99％纯度的氩气，氩气流量为18-20L/Min，背面保护气流量为14-16L/Min，直径3.2mm的铈钨极，钨极端部距接头坡口根部2.5-3.5mm，焊丝端部距离接头坡口根部0.8-1.2mm，焊接电流为200-220A，焊接速度为350-400mm/Min，送丝速度为1100-1200mm/Min。Tungsten arc welding uses 1.2mm ER50-6 solid core welding wire, 99.99% purity argon gas, argon gas flow rate is 18-20L/Min, back shielding gas flow rate is 14-16L/Min, and cerium tungsten with a diameter of 3.2mm pole, the distance between the tungsten pole end and the root of the joint groove is 2.5-3.5mm, the distance between the end of the welding wire and the root of the joint groove is 0.8-1.2mm, the welding current is 200-220A, the welding speed is 350-400mm/Min, and the wire feeding speed is 1100- 1200mm/Min.
熔化极气体保护焊采用直径1.2mm的ER50-6实芯焊丝，使用80％氩气与20％二氧化碳的混合气，气体流量为22L/Min，焊丝端部距离接头坡口根部6-8mm，干伸长度15mm，焊接电流为240-260A，焊接速度为350-400mm/Min。Gas metal arc welding uses ER50-6 solid core welding wire with a diameter of 1.2mm, using a mixture of 80% argon and 20% carbon dioxide. The gas flow is 22L/Min. The distance between the end of the welding wire and the root of the joint groove is 6-8mm. Dry The elongation is 15mm, the welding current is 240-260A, and the welding speed is 350-400mm/Min.
埋弧焊采用直径为4mm的H10Mn2焊丝，匹配焊剂为SJ101，焊剂烘干温度为350℃，烘干时间2小时，焊丝端部距离坡口根部11-13mm，焊接电流为550-600A，焊接速度为350-400mm/Min。Submerged arc welding uses H10Mn2 welding wire with a diameter of 4mm, the matching flux is SJ101, the flux drying temperature is 350°C, the drying time is 2 hours, the distance between the end of the welding wire and the root of the groove is 11-13mm, the welding current is 550-600A, and the welding speed is 350-400mm/Min.
两两焊枪中心距离设置为200mm。The distance between the centers of two welding guns is set to 200mm.
钨极氩弧焊、熔化极气体保护焊和埋弧焊采用上述方式，可使得整个焊接过程平稳，焊接质量更高。Tungsten arc welding, gas metal arc welding and submerged arc welding adopt the above methods, which can make the entire welding process smooth and the welding quality higher.
如图1所示，方形焊接管箱的焊接工艺的焊接工装包括钨极氩弧焊焊枪5、熔化极气体保护焊焊枪6和埋弧焊焊枪10；As shown in Figure 1, the welding tooling for the welding process of the square welded pipe box includes a tungsten arc welding gun 5, a gas metal arc welding gun 6 and a submerged arc welding gun 10;
钨极氩弧焊焊枪5上位于枪头端部设有钨极氩弧焊送丝装置2，熔化极气体保护焊焊枪6上连接有熔化极气体保护焊送丝装置7，埋弧焊焊枪10连接埋弧焊送丝装置9，埋弧焊焊枪10一侧设有输送焊剂的埋弧焊焊剂料斗8；The gas tungsten arc welding gun 5 is provided with a gas tungsten arc welding wire feeding device 2 at the end of the gun head, the gas metal arc welding gun 6 is connected to a gas metal arc welding wire feeding device 7, and the submerged arc welding gun 10 Connected to the submerged arc welding wire feeding device 9, a submerged arc welding flux hopper 8 for transporting flux is provided on one side of the submerged arc welding gun 10;
还包括伸入到方形焊接管箱内部的钨极氩弧焊背面气体保护装置1，钨极氩弧焊背面气体保护装置1固定在背面气体保护装置支撑板3，背面气体保护装置支撑板3连接背面气体保护装置固定支座4。It also includes a tungsten argon arc welding back gas protection device 1 extending into the square welding pipe box. The tungsten argon arc welding back gas protection device 1 is fixed on the back gas protection device support plate 3, and the back gas protection device support plate 3 is connected The back gas protection device fixed support 4.
将工件11放置到合适位置处后，钨极氩弧焊焊枪5、熔化极气体保护焊焊枪6和埋弧焊焊枪10处于同一焊接平台上，钨极氩弧焊背面气体保护装置1伸入工件11内部，依次通过钨极氩弧焊焊枪5、熔化极气体保护焊焊枪6和埋弧焊焊枪10对于工件需要焊接部位进行焊接操作。After placing the workpiece 11 in a suitable position, the gas tungsten arc welding gun 5, the gas metal arc welding gun 6 and the submerged arc welding gun 10 are on the same welding platform, and the gas protection device 1 on the back side of the gas tungsten arc welding extends into the workpiece Inside 11, welding operations are performed on the parts of the workpiece that need to be welded through the tungsten arc welding gun 5, the gas metal arc welding gun 6 and the submerged arc welding gun 10 in sequence.
在对于方形管箱进行焊接时，使用机械化的钨极氩弧焊、熔化极气体保护焊和埋弧焊三种焊接方法联合作业，机械化的钨极氩弧焊枪在前，机械化熔化极气体保护焊枪在其后，最后是埋弧焊枪，三焊枪装在同一焊接平台上，且在同一直线上，两两焊枪中心距离为200mm，该平台利用滑轨整体前后一定，三把焊枪上设有上下左右微调的滑轨，作业时三枪联动，在方形管箱外侧施焊，通过机械化钨极氩弧焊焊接接头根部，达到蛋面焊双面成形的效果，内侧利用与焊枪联动的拖罩进行氩气保护，确保焊缝背面成形及焊缝质量合格，然后利用机械化熔化极气体保护焊填充焊缝，最后埋弧焊盖面，即可完成焊接工作。When welding square pipe boxes, three welding methods of mechanized tungsten arc welding, gas metal arc welding and submerged arc welding are used in combination. The mechanized tungsten arc welding gun is in front, and the mechanized gas metal arc welding gun is used. After that, the last is the submerged arc welding gun. The three welding guns are installed on the same welding platform and on the same straight line. The distance between the centers of two welding guns is 200mm. The platform uses slide rails to determine the front and rear as a whole. The three welding guns are equipped with upper, lower, left and right Finely adjusted slide rails, three guns are linked during operation, welding is performed on the outside of the square pipe box, and the root of the joint is welded through mechanized tungsten argon arc welding to achieve the effect of double-sided egg-side welding. Gas shielding is used to ensure that the back side of the weld is formed and the quality of the weld is qualified, then mechanized gas metal arc welding is used to fill the weld, and finally submerged arc welding is used to cover the surface to complete the welding work.
本发明的技术范围不仅仅局限于上述说明中的内容，本领域技术人员可以在不脱离本发明技术思想的前提下，对上述实施例进行多种变形和修改，而这些变形和修改均应当属于本发明的保护范围内。The technical scope of the present invention is not limited to the content in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical ideas of the present invention, and these deformations and modifications should all belong to within the protection scope of the present invention.
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