WO2018103085A1 - 一种应用于cmt焊接系统的缆式焊丝及cmt焊接系统 - Google Patents

一种应用于cmt焊接系统的缆式焊丝及cmt焊接系统 Download PDF

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Publication number
WO2018103085A1
WO2018103085A1 PCT/CN2016/109263 CN2016109263W WO2018103085A1 WO 2018103085 A1 WO2018103085 A1 WO 2018103085A1 CN 2016109263 W CN2016109263 W CN 2016109263W WO 2018103085 A1 WO2018103085 A1 WO 2018103085A1
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Prior art keywords
welding wire
welding
wire
cmt
spiral
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PCT/CN2016/109263
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English (en)
French (fr)
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冯庆柱
王西峰
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机械科学研究总院青岛分院有限公司
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Priority to PCT/CN2016/109263 priority Critical patent/WO2018103085A1/zh
Publication of WO2018103085A1 publication Critical patent/WO2018103085A1/zh

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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
    • 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
    • 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
    • B23K35/02—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
    • B23K35/0283—Rods, electrodes, wires multi-cored; multiple
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/124—Circuits or methods for feeding welding wire
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper

Definitions

  • the invention relates to the technical field of welding wire, in particular to a cable welding wire and a CMT welding system applied to a CMT welding system.
  • high-current welding technology is often used to achieve the large deposition rate of welding, but with the increase of current, it tends to cause metal to stay and melt through in the first welding.
  • the cold metal transition technology of the bottoming welding MT in the welding groove is required to successfully combine the droplet transfer and the wire feeding movement to realize the low heat input and the spatterless welding.
  • the power supply reduces the current to a very low level, and the heat input is almost zero, reducing unnecessary energy losses.
  • the filling process in the thick plate is inefficient, which is caused by factors such as the limited diameter of the wire.
  • a cable welding wire applied to a CMT welding system comprising a center welding wire, the outer side of the center welding wire is provided with a spiral welding wire, and the spiral welding wire is tightly wound around the center welding wire in a spiral manner Surrounding, and a protective ring is arranged on the outer side of the spiral welding wire, the inner part of the spiral welding wire is provided with a sub-wire group, and the sub-wire group is tangentially disposed, and the inner part of the sub-wire group is first a welding wire, a second welding wire, a third welding wire and a fourth welding wire, wherein the first welding wire and the second welding wire have a diameter D, the third welding wire and the fourth welding wire have a diameter d, and d is smaller than D, wherein the first wire a welding wire and a second welding wire are mutually curved and arranged, and a hole groove is formed between the adjacent intersections, and the third welding wire and the fourth welding wire are connected to
  • the center wire, the spiral wire, the first wire, the second wire, the third wire, and The fourth welding wire is a flux cored wire.
  • the spiral welding wire is seven strands, and the seven-strand spiral welding wire is spirally wound around the center welding wire, and the spiral welding wire and the center welding wire are seamlessly connected.
  • the flux-cored wire comprises the following mass ratio: C: 0.4% to 0.45%, Mn: 1.4-2.0%, Si: 0.4-0.9%, Ni: 1.8-2.1%, Cr: 1-1.5%, Cu: 0.1 to 0.3%, and the balance is iron.
  • the welding torch in the CMT welding system is provided with a threaded bayonet, and the angle of inclination of the thread matches the angle of each strand of the cable welding wire.
  • the present invention has the beneficial effects that the present invention is provided by the mutual matching of the center welding wire, the spiral welding wire, the first welding wire, the second welding wire, the third welding wire and the first welding wire, and between them
  • the connection method is also closer, the broken wire is not easy to be generated, and the pass rate is improved, so that the cost can be greatly reduced, the economic benefit can be improved, the practicality and cost-effectiveness of production are fully met with the needs of industrial development; and the welding is more
  • the deep penetration can reduce the number of weld seams of thick plate welding, greatly improve the welding productivity, reduce the production cost, and the spatter is very small.
  • the mechanical properties of the weld are high, and the peripheral welding wire is relatively tight, which makes the wire feeding process more stable, thereby improving the cable.
  • the weldability of the welding wire makes the welding effect of the CMT welding system better.
  • Figure 1 is a schematic structural view of the present invention
  • Figure 2 is a cross-sectional view showing a sub-wire group of the present invention.
  • center welding wire 1 spiral welding wire 2, sub-wire group 3, first welding wire 4, second welding wire 5, third welding wire 6, and fourth welding wire 7.
  • a cable welding wire applied to a CMT welding system including a center welding wire 1, a spiral welding wire 2 is disposed outside the center welding wire 1, and the spiral welding wire 2 is spiraled
  • the method is tightly wound around the center welding wire 1, and the outer side of the spiral welding wire 2 is provided with a protection ring.
  • the inner portion of the spiral welding wire 2 is provided with a sub-wire group 3, and the sub-wire group 3 is tangentially disposed.
  • the inside of the sub-wire group 3 is provided with a first welding wire 4, a second welding wire 5, a third welding wire 6 and a fourth welding wire 7, the diameters of the first welding wire 4 and the second welding wire 5 are both D, and the third The diameter of the welding wire 6 and the fourth welding wire 7 are both d, and d is smaller than D.
  • the first welding wire 4 and the second welding wire 5 are mutually curved and arranged, and a groove is formed between adjacent intersections.
  • the third welding wire 6 and the fourth welding wire 7 are connected to the first welding wire 4 and the second welding wire 5 through the insertion hole groove, and the third welding wire 6 and the fourth welding wire 7 are inserted in the opposite order and direction.
  • the center wire 1, the spiral welding wire 2, the first welding wire 4, the second welding wire 5, the third welding wire 6, and the fourth welding wire 7 are all flux cored wires.
  • the spiral welding wire is in the form of seven strands, and the seven-strand spiral welding wire 2 is spirally wound around the center welding wire 1, and the spiral welding wire 2 and the center welding wire 1 are seamlessly connected.
  • the flux-cored wire includes the following mass ratios: C: 0.4%, Mn: 1.4, Si: 0.4, Ni: 1.8, Cr: 1, Cu: 0.1, and the balance is iron.
  • the welding gun in the CMT welding system is provided with a threaded bayonet, and the angle of inclination of the thread matches the angle of each strand of the cable welding wire.
  • the present invention provides a technical solution: a cable applied to a CMT welding system.
  • a welding wire comprising a center welding wire 1 provided with a spiral welding wire 2 on the outer side of the center welding wire 1, the spiral welding wire 2 is tightly wound around the center welding wire 1 in a spiral manner, and a protective ring is provided on the outer side of the spiral welding wire 2, the spiral
  • the inner portion of the welding wire 2 is provided with a sub-wire group 3, and the sub-wire group 3 is tangentially disposed.
  • the inner portion of the sub-wire group 3 is provided with a first welding wire 4, a second welding wire 5, and a third welding wire.
  • first welding wire 4 and the second welding wire 5 have a diameter D
  • third welding wire 6 and the fourth welding wire 7 have a diameter d
  • d is smaller than D
  • first welding wire 4 The second welding wire 5 and the second welding wire 5 are mutually curved and arranged, and a hole groove is formed between the adjacent intersections, and the third welding wire 6 and the fourth welding wire 7 are connected to the first welding wire 4 and the second welding wire 5 through the insertion hole groove.
  • the third welding wire 6 and the fourth welding wire 7 are inserted in the reverse order and direction.
  • the center wire 1, the spiral welding wire 2, the first welding wire 4, the second welding wire 5, the third welding wire 6, and the fourth welding wire 7 are all flux cored wires.
  • the spiral welding wire is in the form of seven strands, and the seven-strand spiral welding wire 2 is spirally wound around the center welding wire 1, and the spiral welding wire 2 and the center welding wire 1 are seamlessly connected.
  • the flux-cored wire includes the following mass ratios: C: 0.45%, Mn: 2, 0%, Si: 0.9%, Ni: 2.1%, Cr: 1.5%, Cu: 0.3%, and the balance being iron.
  • the welding gun in the CMT welding system is provided with a threaded bayonet, and the angle of inclination of the thread matches the angle of each strand of the cable welding wire.
  • the cable-type welding wire produced by the mass ratio of two different components can work well in the CMT welding system, and the present invention passes through the center wire 1 and the spiral welding wire 2 provided.
  • the first welding wire 4, the second welding wire 5, the third welding wire 6 and the fourth welding wire 7 cooperate with each other, and the connection between them is also more tight, and it is not easy to generate broken wire, thereby improving the qualification rate of the tanning, thereby greatly reducing Cost, improve economic efficiency, fully meet the needs of industrial development in terms of practicality and cost-effectiveness of production; and have greater penetration during welding, which can reduce welding of thick plate welding
  • the number of seam layers greatly improves the welding productivity, reduces the production cost, and the spatter is very small.
  • the mechanical properties of the weld are high, and the peripheral welding wire is relatively tight, which makes the wire feeding process more stable, thereby improving the weldability of the cable wire and making the CMT welding system. The welding effect is better.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

一种应用于CMT焊接系统的缆式焊丝，包括中心焊丝（1），所述中心焊丝的外侧设有螺旋焊丝（2），螺旋焊丝（2）以螺旋方式紧密缠绕在中心焊丝的周围，且螺旋焊丝的外侧设有保护圈，所述螺旋焊丝的内部均四组设有子焊丝组（3），且子焊丝组之间均相切设置，所述子焊丝组的内部均设有第一焊丝（4）、第二焊丝（5）、第三焊丝（6）和第四焊丝（74）。一种应用上述缆式焊丝的CMT焊接系统。上述缆式焊丝焊接时具有更大熔深，可减少厚板焊接的焊缝层数，极大提高焊接生产率，降低生产成本，而且飞溅极少，焊缝机械性能高，外围焊丝比较紧密，送丝过程更加稳定，从而提高了缆式焊丝的焊接性，使得CMT焊接系统的焊接效果更好。

Description

一种应用于CMT焊接系统的缆式焊丝及CMT焊接系统 技术领域
本发明涉及焊丝技术领域，具体为一种应用于CMT焊接系统的缆式焊丝及CMT焊接系统。
背景技术
为实现高效焊接，常常采用大电流焊接技术实现焊接的大熔敷率，但随电流的增大，往往导致其在第一道焊接时易会出现金属下榻、熔穿等现象。为克服在第一道焊接的焊接问题，需要焊接坡口中进行打底焊MT的冷金属过渡技术成功地将熔滴过渡与送丝运动结合，实现了低热输入、无飞溅的焊接，在熔滴过渡短路时，电源将电流降至很低，热输入几乎为零，减少了不必要的能量损耗。但在厚板的填充过程效率很低，这是由焊丝直径受限等因素所导致。
发明内容
本发明的目的在于提供一种应用于CMT焊接系统的缆式焊丝及CMT焊接系统，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：一种应用于CMT焊接系统的缆式焊丝，包括中心焊丝，所述中心焊丝的外侧设有螺旋焊丝，螺旋焊丝以螺旋方式紧密缠绕在中心焊丝的周围，且螺旋焊丝的外侧设有保护圈，所述螺旋焊丝的内部均四组设有子焊丝组，且子焊丝组之间均相切设置，所述子焊丝组的内部均设有第一焊丝、第二焊丝、第三焊丝和第四焊丝，所述第一焊丝和第二焊丝的直径均为D，第三焊丝和第四焊丝的直径均为d，且d小于D，所述第一焊丝和第二焊丝相互交叉弯曲设置，且相邻的交接处之间形成有孔槽，所述第三焊丝和第四焊丝均通过插接孔槽连接第一焊丝和第二焊丝，且第三焊丝和第四焊丝的插接顺序和方向相反。
优选的，所述中心焊丝、螺旋焊丝、第一焊丝、第二焊丝、第三焊丝和 第四焊丝均为药芯焊丝。
优选的，所述螺旋焊丝位七股，且七股螺旋焊丝围绕中心焊丝螺旋缠绕，并且螺旋焊丝和中心焊丝为无缝连接。
优选的，所述药芯焊丝包括以下质量配比：C：0.4％～0.45％、Mn：1.4-2.0％、Si：0.4-0.9％、Ni：1.8-2.1％、Cr：1～1.5％、Cu：0.1～0.3％，其余为铁。
一种应用缆式焊丝的CMT焊接系统，所述CMT焊接系统采用上述的缆式焊丝。
优选的，所述CMT焊接系统中的焊枪上设有螺纹卡口，且其螺纹的倾斜角度与缆式焊丝每一股绞合时的角度相匹配。
与现有技术相比，本发明的有益效果是：本发明通过设有的中心焊丝、螺旋焊丝、第一焊丝、第二焊丝、第三焊丝和第一焊丝的相互配合，而且它们之间的连接方式也更为紧密，不易产生断丝，提高捻制合格率，从而可以大幅降低成本，提高经济效益，在生产的实用性及成本效益上完全符合产业发展所需；且焊接时具有更大熔深，可减少厚板焊接的焊缝层数，极大提高焊接生产率，降低生产成本，而且飞溅极少，焊缝机械性能高外围焊丝比较紧密，使得送丝过程更加稳定，从而提高了缆式焊丝的焊接性，使得CMT焊接系统的焊接效果更好。
附图说明
图1为本发明结构示意图；
图2为本发明子焊丝组的剖面图。
图中：中心焊丝1、螺旋焊丝2、子焊丝组3、第一焊丝4、第二焊丝5、第三焊丝6、第四焊丝7。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而 不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。实施例一
请参阅图1-2，本发明提供一种技术方案：一种应用于CMT焊接系统的缆式焊丝，包括中心焊丝1，所述中心焊丝1的外侧设有螺旋焊丝2，螺旋焊丝2以螺旋方式紧密缠绕在中心焊丝1的周围，且螺旋焊丝2的外侧设有保护圈，所述螺旋焊丝2的内部均四组设有子焊丝组3，且子焊丝组3之间均相切设置，所述子焊丝组3的内部均设有第一焊丝4、第二焊丝5、第三焊丝6和第四焊丝7，所述第一焊丝4和第二焊丝5的直径均为D，第三焊丝6和第四焊丝7的直径均为d，且d小于D，所述第一焊丝4和第二焊丝5相互交叉弯曲设置，且相邻的交接处之间形成有孔槽，所述第三焊丝6和第四焊丝7均通过插接孔槽连接第一焊丝4和第二焊丝5，且第三焊丝6和第四焊丝7的插接顺序和方向相反。
所述中心焊丝1、螺旋焊丝2、第一焊丝4、第二焊丝5、第三焊丝6和第四焊丝7均为药芯焊丝。
所述螺旋焊丝2位七股，且七股螺旋焊丝2围绕中心焊丝1螺旋缠绕，并且螺旋焊丝2和中心焊丝1为无缝连接。
所述药芯焊丝包括以下质量配比：C：0.4％、Mn：1.4、Si：0.4、Ni：1.8、Cr：1、Cu：0.1，其余为铁。
一种应用缆式焊丝的CMT焊接系统，所述CMT焊接系统采用上述的缆式焊丝。
所述CMT焊接系统中的焊枪上设有螺纹卡口，且其螺纹的倾斜角度与缆式焊丝每一股绞合时的角度相匹配。
实施例二
请参阅图1-2，本发明提供一种技术方案：一种应用于CMT焊接系统的缆 式焊丝，包括中心焊丝1，所述中心焊丝1的外侧设有螺旋焊丝2，螺旋焊丝2以螺旋方式紧密缠绕在中心焊丝1的周围，且螺旋焊丝2的外侧设有保护圈，所述螺旋焊丝2的内部均四组设有子焊丝组3，且子焊丝组3之间均相切设置，所述子焊丝组3的内部均设有第一焊丝4、第二焊丝5、第三焊丝6和第四焊丝7，所述第一焊丝4和第二焊丝5的直径均为D，第三焊丝6和第四焊丝7的直径均为d，且d小于D，所述第一焊丝4和第二焊丝5相互交叉弯曲设置，且相邻的交接处之间形成有孔槽，所述第三焊丝6和第四焊丝7均通过插接孔槽连接第一焊丝4和第二焊丝5，且第三焊丝6和第四焊丝7的插接顺序和方向相反。
所述中心焊丝1、螺旋焊丝2、第一焊丝4、第二焊丝5、第三焊丝6和第四焊丝7均为药芯焊丝。
所述螺旋焊丝2位七股，且七股螺旋焊丝2围绕中心焊丝1螺旋缠绕，并且螺旋焊丝2和中心焊丝1为无缝连接。
所述药芯焊丝包括以下质量配比：C：0.45％、Mn：2、0％，Si：0.9％、Ni：2.1％、Cr：1.5％、Cu：0.3％，其余为铁。
一种应用缆式焊丝的CMT焊接系统，所述CMT焊接系统采用上述的缆式焊丝。
所述CMT焊接系统中的焊枪上设有螺纹卡口，且其螺纹的倾斜角度与缆式焊丝每一股绞合时的角度相匹配。
根据以上两组实施例的比较发现，通过两组不同成分质量配比生产出来的缆式焊丝都能够很好的作用在CMT焊接系统里面，本发明通过设有的中心焊丝1、螺旋焊丝2、第一焊丝4、第二焊丝5、第三焊丝6和第四焊丝7的相互配合，而且它们之间的连接方式也更为紧密，不易产生断丝，提高捻制合格率，从而可以大幅降低成本，提高经济效益，在生产的实用性及成本效益上完全符合产业发展所需；且焊接时具有更大熔深，可减少厚板焊接的焊 缝层数，极大提高焊接生产率，降低生产成本，而且飞溅极少，焊缝机械性能高外围焊丝比较紧密，使得送丝过程更加稳定，从而提高了缆式焊丝的焊接性，使得CMT焊接系统的焊接效果更好。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (6)

  1. 一种应用于CMT焊接系统的缆式焊丝，包括中心焊丝(1)，其特征在于：所述中心焊丝(1)的外侧设有螺旋焊丝(2)，螺旋焊丝(2)以螺旋方式紧密缠绕在中心焊丝(1)的周围，且螺旋焊丝(2)的外侧设有保护圈，所述螺旋焊丝(2)的内部均四组设有子焊丝组(3)，且子焊丝组(3)之间均相切设置，所述子焊丝组(3)的内部均设有第一焊丝(4)、第二焊丝(5)、第三焊丝(6)和第四焊丝(7)，所述第一焊丝(4)和第二焊丝(5)的直径均为D，第三焊丝(6)和第四焊丝(7)的直径均为d，且d小于D，所述第一焊丝(4)和第二焊丝(5)相互交叉弯曲设置，且相邻的交接处之间形成有孔槽，所述第三焊丝(6)和第四焊丝(7)均通过插接孔槽连接第一焊丝(4)和第二焊丝(5)，且第三焊丝(6)和第四焊丝(7)的插接顺序和方向相反。
  2. 根据权利要求1所述的一种应用于CMT焊接系统的缆式焊丝，其特征在于：所述中心焊丝(1)、螺旋焊丝(2)、第一焊丝(4)、第二焊丝(5)、第三焊丝(6)和第四焊丝(7)均为药芯焊丝。
  3. 根据权利要求1所述的一种应用于CMT焊接系统的缆式焊丝，其特征在于：所述螺旋焊丝(2)位七股，且七股螺旋焊丝(2)围绕中心焊丝(1)螺旋缠绕，并且螺旋焊丝(2)和中心焊丝(1)为无缝连接。
  4. 根据权利要求2所述的一种应用于CMT焊接系统的缆式焊丝，其特征在于：所述药芯焊丝包括以下质量配比：C：0.4％～0.45％、Mn：1.4-2.0％、Si：0.4-0.9％、Ni：1.8-2.1％、Cr：1～1.5％、Cu：0.1～0.3％，其余为铁。
  5. 一种应用如权利要求1所述的缆式焊丝的CMT焊接系统，其特征在于：所述CMT焊接系统采用上述的缆式焊丝。
  6. 根据权利要求5所述的一种应用缆式焊丝的CMT焊接系统，其特征在于：所述CMT焊接系统中的焊枪上设有螺纹卡口，且其螺纹的倾斜角度与缆式焊丝每一股绞合时的角度相匹配。
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