CN203765187U - CMT (cold metal transfer) welding system and cable-type welding wire therefor - Google Patents

CMT (cold metal transfer) welding system and cable-type welding wire therefor Download PDF

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Publication number
CN203765187U
CN203765187U CN201420140825.9U CN201420140825U CN203765187U CN 203765187 U CN203765187 U CN 203765187U CN 201420140825 U CN201420140825 U CN 201420140825U CN 203765187 U CN203765187 U CN 203765187U
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CN
China
Prior art keywords
welding
wire
welding wire
cmt
cable formula
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Expired - Fee Related
Application number
CN201420140825.9U
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Chinese (zh)
Inventor
胡庆贤
胥国祥
方臣富
时振
王晓丽
徐斌
刘书高
揣尧
姚鹤
付志伟
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Priority to CN201420140825.9U priority Critical patent/CN203765187U/en
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Publication of CN203765187U publication Critical patent/CN203765187U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a CMT (cold metal transfer) welding system and a cable-type welding wire therefor. The cable-type welding wire is formed by means of stranding wires, including a center welding wire and other spiral welding wires; the spiral welding wires are tightly wound around the center welding wire. According to the technical scheme, the CTM welding system is characterized in that an anode of a welding power source is connected with a welding torch, the cable-type welding wire is mounted in a wire feeder and connected with the welding torch, a cathode of the welding power source is connected with a workpiece to be welded, and the wire feeder is connected with a CMT control system. The CMT welding system and the cable-type welding wire therefor have the advantages that efficiency of welding large thick plates is greatly improved and the defects, such as metal collapse and melting-through, occurring in high-power cable-type backing welding are avoided.

Description

A kind of cable formula welding wire and CMT welding system that is applied to CMT welding system
Technical field
The utility model belongs to field of welding devices, relates to a kind of cable formula welding wire and CMT welding system of the CMT of being applied to welding system.
Background technology
At welding technology field, efficient welding is subject to pursuing of people always, and how realizing the efficient welding of welding work pieces is the problem that welding field is being explored always.The efficient welding resource that can use manpower and material resources sparingly, can realize again high-quality welding.
For realizing efficient welding, usually adopt large electric current solder technology to realize the large deposition rate of welding, but with the increase of electric current, often cause it in the time that first welds, easily to there will be the phenomenons such as metal is stayed, burn through.For overcoming the Welding Problems in first welding, need to carry out in bevel for welding backing welding.
The cold metal transfer technology of CMT is successfully combined the droplet transfer with wire feed motion, realized low_input_power, without the welding of splashing, and in the time of droplet transfer short circuit, power supply is down to electric current very low, and heat input is almost nil, has reduced unnecessary energy loss.But the filling process efficiency at slab is very low, this is by due to the factor such as gage of wire is limited.Cable formula welding wire is a kind of multi-strand stranded welding wire, not only has welding efficiency high, the advantage that deposited metal amount is large, and in welding process, also can form rotating the arc molten bath is stirred fully, make the even refinement of weld grain, micro-full and uniform distribution, quality of weld joint is high.
Utility model content
The purpose of this utility model is to provide a kind of cable formula welding wire of the CMT of being applied to welding system, has solved existing CMT welding system and has adopted solid wire in the welding process of slab, to cause that metal is stayed, the problem of burn through.
Another object of the present utility model is to provide a kind of CMT welding system that adopts cable formula welding wire.
The technical solution adopted in the utility model is that cable formula welding wire is made up of strands mode, wherein has welding wire centered by one, and all the other welding wires are spiral welding wire, and spiral welding wire is closely wrapped in middle cored welding wire around in a spiral manner.
Technical characterstic of the present utility model is also that middle cored welding wire and spiral welding wire are flux-cored wire.Spiral welding wire is 6 strands, and middle cored welding wire is 1 strand, and spiral welding wire is closely wound in middle cored welding wire around in a spiral manner.Cable formula welding wire is that in 6 strands of spiral welding wires being closely wound around of spiral way and 1 strand, cored welding wire is one group, stirs to close to form by many groups.Middle cored welding wire and spiral welding filament diameter are 1.2mm; The diameter of cable formula welding wire is 3.6mm.
CMT welding system of the present utility model, comprises wire-feed motor, the inner cable formula welding wire of installing of wire-feed motor, cable formula welding wire connects welding gun by wire-feed motor drive, wire-feed motor also connects CMT control system, welding gun connecting welding positive source, and source of welding current negative pole connects workpiece to be welded.Wire-feed motor drive adopts screw-type drive, and the angle of inclination of its screw thread and cable formula welding wire angle when often one is stranded matches.Recessed in the middle of wire-feed motor drive worm-gear toothing, by blocking the projection of welding wire surface, make welding wire not depart from wire feed path.
The beneficial effects of the utility model are that welding efficiency improves greatly in the time of the large slab of welding, and the metal having produced while having avoided high-power cable formula welding bottoming is stayed, the defects such as burn through.
Brief description of the drawings
Fig. 1 is the cable formula welding wire schematic cross-section that CMT welding system adopts;
Fig. 2 is cable formula welding wire side schematic view;
Fig. 3 is that many assembly weldings of the utility model silk stirs synthetic cable formula welding wire schematic diagram;
Fig. 4 is CMT welding system structure chart;
Fig. 5 is wire-feed motor transmission wheel structure figure;
Fig. 6 is wire-feed motor drive worm gear front schematic view;
Fig. 7 is wire-feed motor drive turbine schematic diagram.
In figure, 1. cable formula welding wire, 2. in cored welding wire, 3. spiral welding wire, the 4. source of welding current, 5. wire-feed motor, 6. welding gun, 7. workpiece to be welded, 8.CMT control system, 9. wire-feed motor drive.
Detailed description of the invention
Describe below in conjunction with the drawings and specific embodiments:
As depicted in figs. 1 and 2, cable formula welding wire 1 is made up of strands mode, wherein has welding wire 2 centered by one, and all the other welding wires are spiral welding wire 3, and spiral welding wire 3 is closely wrapped in middle cored welding wire 2 around in a spiral manner.Cable formula welding wire 1 diameter is large, can adopt larger sweating heat input, has greatly improved the deposition efficiency of welding, and fusion penetration strengthens, when the larger workpiece of throat thickness, can reduce the welding number of plies, thereby raise the efficiency, save cost, and can reduce the deformation extent of material.The droplet transfer of CMT welding is that the pumpback by welding wire realizes in the time of arc extinction, there is no the quick-fried disconnected of molten drop, so without splashing, when having solved cable formula welding wire 1 and adopting other welding methods, due to the power large phenomenon of splashing greatly.
The utility model cable formula welding wire 1 excessively welds as the cold metal of packing material, cable formula welding wire 1 is to rotate gummed by multiply spiral welding wire 3 to form, and wherein a root wire is positioned at center, is called middle cored welding wire 2, all the other welding wires glue together around central hair, be called peripheral silk, cable formula welding wire 1 diameter is large, and efficiency is high, be applied in CMT solder technology, welding efficiency improves greatly, and energy consumption can save 50%~60%, the defects such as the metal having produced while having avoided high-power cable formula welding wire bottoming is stayed, burn through.Adopt cable formula welding wire 1 to carry out CMT welding, mechanical turning effort can utilize cable formula welding wire 1 to melt time, in conjunction with the mechanical pulling function of CMT pattern, acting in conjunction is in liquid molten bath, can effectively strengthen the stirring action of liquid state of molten pool metal, be conducive to the abundant mixing of alloying element, the defect while reducing welding, improves weldquality.In conjunction with the controllability of the composition of cable formula welding wire 1, can be effectively applied to surface overlaying.The CMT welding procedure of utilizing cable formula welding wire 1, has increased gage of wire, and one can increase deposition rate, reduces energy consumption; Two mechanical turning efforts can utilize cable formula welding wire 1 to melt time strengthen the stirring action in molten bath, can realize the Effective Regulation of butt welded seam composition.While welding large slab, welding efficiency improves greatly, and the metal having produced while having avoided high-power cable formula welding bottoming is stayed, the defects such as burn through.
As preferred version, spiral welding wire 3 is six strands, and middle cored welding wire 2 is 1 strand, and spiral welding wire 3 is closely wound in middle cored welding wire 2 around in a spiral manner.Middle cored welding wire 2 and spiral welding wire 3 diameters are 1.2mm; The diameter of cable formula welding wire 1 is 3.6mm.Middle cored welding wire 2 and spiral welding wire 3 are flux-cored wire.
Wherein every one welding wire can be solid welding wire or flux-cored wire, and in order to improve the stirring action of electric arc to molten bath, often one can be again that thinner welding wire strands forms.As shown in Figure 3, in 3 and 1 strand of 6 strands of spiral welding wire being closely wound around in a spiral manner, cored welding wire 2 is one group, stirs to close to form by many groups.
The utility model CMT welding system, as shown in Figure 4, comprise wire-feed motor 5, at the inner cable formula welding wire 1 of installing of wire-feed motor 5, cable formula welding wire 1 connects welding gun 6 by wire-feed motor drive 9, wire-feed motor 5 also connects CMT control system 8, welding gun 6 connecting welding power supply 4 positive poles, and the source of welding current 4 negative poles connect workpiece 7 to be welded.Wire-feed motor drive 9 adopts screw-type drive, and every one angle when stranded of the angle of inclination of its screw thread and cable formula welding wire matches.Recessed in the middle of wire-feed motor drive 9 worm-gear toothings, by blocking welding wire surface projection, make welding wire not depart from wire feed path.Wire-feed motor 5 is connected with CMT control system 8, controlled by CMT control system 8, the 1 end fusing of cable formula welding wire forms molten drop, molten drop contacts with molten bath and forms short circuit, now, CMT control system 8 obtains can cutting off electric current after short-circuit signal, and the pumpback campaign of controlling welding wire helps molten drop to come off, realize the cold excessive of molten drop, eliminated splash phenomena.CMT control system 8 can adopt the satisfactory welding control system of existing energy.
The utility model also can increase welding wire and stir charge-coupled number, if emphasize the stirring action of bath level direction, stirs the angle of closing the cable formula welding wire 1 forming every one and vertical direction tune up in right amount as requested by many groups; If emphasize the stirring action of fusion penetration direction, often the angle of one and vertical direction can be turned down in right amount.Specifically can be with reference to actual needs.As shown in Figure 5, there is certain angle in the turbo tooth of wire-feed motor drive 9, and match with per share welding wire strand angle, the frictional strength while effectively reducing like this CMT welding between welding wire pumpback causes repeatedly welding wire and drive, has avoided the wearing and tearing to cable formula welding wire 1 and wire-feed motor 5.Be the angle a of turbo tooth as shown in Figure 6 and Figure 7.
The utility model compared with prior art has value widely, has following advantages and beneficial effect:
1, cable formula welding wire CMT welding system of the present utility model is in the time of the large slab of welding, and welding efficiency improves greatly, and the metal having produced while having avoided high-power cable formula welding wire bottoming is stayed, the defects such as burn through.
2, compared with cable formula welding wire CMT welding system of the present utility model is taked other welding methods with cable formula welding wire 1, there is heat input little, without the outstanding advantages such as splashing.
3, the outer welding wire of the cable formula welding wire 1 of cable formula welding wire CMT welding system of the present utility model has mechanical turning effort in the time of fusing, in conjunction with the mechanical pulling function of CMT pattern, acting in conjunction is in liquid molten bath, can effectively strengthen the stirring action of liquid state of molten pool metal, contribute to gas overflowing and beneficial element being uniformly distributed in molten bath in motlten metal, thereby reduce weld defect, improve weldquality.
4, adopt identical weldingvoltage and welding current specification, cable formula welding wire CMT welding system of the present utility model is compared with common CMT welding system, and its welding wire melting rate, deposition rate and electric energy efficiency etc. are all significantly improved.

Claims (8)

1. one kind is applied to the cable formula welding wire of CMT welding system, it is characterized in that: cable formula welding wire (1) is made up of strands mode, wherein there is welding wire (2) centered by one, all the other welding wires are spiral welding wire (3), and spiral welding wire (3) is closely wrapped in middle cored welding wire (2) around in a spiral manner.
2. according to a kind of cable formula welding wire that is applied to CMT welding system described in claim 1, it is characterized in that: described middle cored welding wire (2) and spiral welding wire (3) are flux-cored wire.
3. according to a kind of cable formula welding wire that is applied to CMT welding system described in claim 1, it is characterized in that: described spiral welding wire (3) is 6 strands, middle cored welding wire (2) is 1 strand, and spiral welding wire (3) is closely wound in middle cored welding wire (2) around in a spiral manner.
4. according to a kind of cable formula welding wire that is applied to CMT welding system described in claim 3, it is characterized in that: in the described 6 strands of spiral welding wires (3) that are closely wound around in a spiral manner and 1 strand, cored welding wire (2) is one group, stir to close by many groups and form.
5. according to the arbitrary described a kind of cable formula welding wire that is applied to CMT welding system of claims 1 to 3, it is characterized in that: described middle cored welding wire (2) and spiral welding wire (3) diameter are 1.2mm; The diameter of cable formula welding wire (1) is 3.6mm.
6. application rights requires the CMT welding system of cable formula welding wire described in 1, it is characterized in that: comprise wire-feed motor (5), the inner cable formula welding wire (1) of installing of wire-feed motor (5), cable formula welding wire (1) connects welding gun (6) by wire-feed motor drive (9), wire-feed motor (5) also connects CMT control system (8), welding gun (6) connecting welding power supply (4) positive pole, the source of welding current (4) negative pole connects workpiece to be welded (7).
7. according to CMT welding system described in claim 6, it is characterized in that: described wire-feed motor drive (9) adopts screw-type drive, the angle of inclination of its screw thread and cable formula welding wire angle when often one is stranded matches.
8. according to CMT welding system described in claim 6, it is characterized in that: recessed in the middle of described wire-feed motor drive (9) worm-gear toothing, by blocking the projection of welding wire surface, make welding wire not depart from wire feed path.
CN201420140825.9U 2014-03-26 2014-03-26 CMT (cold metal transfer) welding system and cable-type welding wire therefor Expired - Fee Related CN203765187U (en)

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CN201420140825.9U CN203765187U (en) 2014-03-26 2014-03-26 CMT (cold metal transfer) welding system and cable-type welding wire therefor

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103862188A (en) * 2014-03-26 2014-06-18 江苏科技大学 CMT welding system and cable type welding wire applied to same
CN105127554A (en) * 2015-09-08 2015-12-09 刘文斌 Wire feeding method for welding wires
CN106217375A (en) * 2016-08-26 2016-12-14 广州市银三环机械有限公司 The robot welding system that a kind of welding machine and robot match
CN106312317A (en) * 2016-10-27 2017-01-11 北京航星机器制造有限公司 Welding method of aluminum-magnesium alloy with medium thickness
CN106363323A (en) * 2016-12-02 2017-02-01 机械科学研究总院青岛分院 Metal welding forming system and metal welding forming method based on CMT (cold metal transition)
WO2018103085A1 (en) * 2016-12-09 2018-06-14 机械科学研究总院青岛分院有限公司 Cable welding wire for use in cmt welding system, and cmt welding system
WO2018103075A1 (en) * 2016-12-09 2018-06-14 冯庆柱 Cmt-based metal welding forming system and method
WO2020001418A1 (en) * 2018-06-25 2020-01-02 苏州引力焊业科技有限公司 Cable-type welding wire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103862188A (en) * 2014-03-26 2014-06-18 江苏科技大学 CMT welding system and cable type welding wire applied to same
CN105127554A (en) * 2015-09-08 2015-12-09 刘文斌 Wire feeding method for welding wires
CN106217375A (en) * 2016-08-26 2016-12-14 广州市银三环机械有限公司 The robot welding system that a kind of welding machine and robot match
CN106312317A (en) * 2016-10-27 2017-01-11 北京航星机器制造有限公司 Welding method of aluminum-magnesium alloy with medium thickness
CN106363323A (en) * 2016-12-02 2017-02-01 机械科学研究总院青岛分院 Metal welding forming system and metal welding forming method based on CMT (cold metal transition)
WO2018103085A1 (en) * 2016-12-09 2018-06-14 机械科学研究总院青岛分院有限公司 Cable welding wire for use in cmt welding system, and cmt welding system
WO2018103075A1 (en) * 2016-12-09 2018-06-14 冯庆柱 Cmt-based metal welding forming system and method
WO2020001418A1 (en) * 2018-06-25 2020-01-02 苏州引力焊业科技有限公司 Cable-type welding wire

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

Granted publication date: 20140813

Termination date: 20160326

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