CN108161176A - A kind of cold metal transfer welding procedure - Google Patents
A kind of cold metal transfer welding procedure Download PDFInfo
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- CN108161176A CN108161176A CN201810073232.8A CN201810073232A CN108161176A CN 108161176 A CN108161176 A CN 108161176A CN 201810073232 A CN201810073232 A CN 201810073232A CN 108161176 A CN108161176 A CN 108161176A
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- welding
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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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
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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
Abstract
The invention discloses a kind of cold metal transfer welding procedures, include the following steps：S1：Zinc-plated processing is carried out to the welding surface of ferroalloy, the thickness of zinc coat is 0.01~1.00mm；S2：Surface treatment is carried out to the welding surface of magnesium alloy and removes removing oxide layer；S3：Welding gun is moved at welding position, the distance of welding gun and sealing is 10~20mm, and the angle angle of welding gun and welding base metal is 30 °~60 °；S4：Start argon gas protection gas, flow velocity is 15~30L/min, selects the welding wire of a diameter of 1.5~1.8mm；S5：Welding current is 50~80A, and weldingvoltage is 10~15V, is welded with the rate of 7~10mm/s, while wire feed rate is 3.5~5.0m/min.Welding procedure provided by the invention can realize effective welding to magnesium alloy, and can significantly decrease splashing relative to TIG Weldings.
Description
Technical field
The present invention relates to a kind of metal welding technique field, particularly a kind of cold metal transfer welding procedure.
Background technology
Magnesium alloy is a kind of more special material and manipulating object in welding technique field because magnesium alloy with
Alloy material based on ferro element has more significant difference in nature in physics and chemistry：First from microcosmic, with magnesium elements
Based on magnesium alloy and the alloy material based on ferro element there are different lattice types, the lattice types of magnesium metal are solid matters
Hexagonal structure, and the lattice types of metallic iron are bodily form cubic structures, the difference in above-mentioned lattice types is directly resulted in magnesium
Magnesium alloy based on element has larger difference with the alloy material based on ferro element in physical and mechanical property.Next, with
Magnesium alloy its fusing point based on magnesium elements will generally also be markedly inferior to the fusing point of the alloy material based on ferro element, magnesium metal
Fusing point at 650 DEG C or so, and the fusing point of metallic iron is at 1500 DEG C or so, therefore the fusing point of magnesium alloy is mostly less than 650 DEG C, and
The fusing point of alloy material based on ferro element is mostly at 1000 DEG C or more.
In addition, it is difficult that object occurs between ferro element in the magnesium elements in magnesium alloy and the alloy material based on ferro element
Reason reaction and chemical reaction, the reaction condition for generating intermetallic compound or solid solution are more demanding.For these reasons so that
Conventional soldering techniques are difficult to realize effective welding of magnesium alloy and steel.The primary use of welding processing of current previous magnesium alloy
TIG Weldings, and TIG Weldings are primarily present the shortcomings of arc stability is bad, splashing amount is larger, still have to be overcome.
Cold metal transfer technology is a kind of new welding process developed on the basis of short circuiting transfer, common short circuiting transfer
Principle of Process be：Wire melting formation molten drop molten drop is quick-fried disconnected with molten bath short circuit short-circuit bridges, is with big electric current, greatly when short-circuit
Heat input and splashing；And cold metal transfer mode is then in molten drop short circuit, digitlization electric power outputting current goes to zero,
The pumpback campaign of welding wire helps molten drop to come off simultaneously.Therefore cold metal transfer welding procedure is relative to conventional TIG Weldings, energy
It enough efficiently reduces even to eliminate and splash.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of cold metal transfer welding procedure, can realize pair
Effective welding of magnesium alloy, and can significantly decrease splashing relative to TIG Weldings.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of cold metal transfer welding procedure, includes the following steps：
S1：Carry out zinc-plated processing to the welding surface of the alloy material based on ferro element, the thickness of zinc coat for 0.01~
1.00mm；
S2：The welding surface of alloy material based on magnesium elements is surface-treated, to remove removing oxide layer；
S3：Welding gun is moved at welding position, and the distance of welding gun and sealing is 10~20mm, welding gun and welding base metal
Angle angle is 30 °~60 °；
S4：Start argon gas protection gas, the flow velocity of argon gas protection gas is 15~30L/min, selects a diameter of 1.5~1.8mm
Welding wire；
S5：The source of welding current is connected, making welding current, weldingvoltage is 10~15V, with the speed of 7~10mm/s for 50~80A
Rate is welded, while wire feed rate is 3.5~5.0m/min.
As the further preferred of above-mentioned technical proposal, in step sl, the thickness of zinc coat is 0.2mm.
As the further preferred of above-mentioned technical proposal, in step s 2, the method for removing removing oxide layer is first to magnesium
The welding surface of alloy material based on element is polished, and is then wiped with acetone.
As the further preferred of above-mentioned technical proposal, in step s3, the distance of welding gun and sealing is 14mm, welding gun with
The angle angle of welding base metal is 40 °.
As the further preferred of above-mentioned technical proposal, in step s 4, welding wire by following mass percent element group
Into：6.5%~8.0% aluminium, 0.8%~1.5% silicon, 1.0%~1.5% iron, 0.4%~0.6% copper, 0.1%
~0.2% titanium, 0.05%~0.15% zinc, 0.05%~0.10% manganese, the magnesium of surplus.
As the further preferred of above-mentioned technical proposal, in step s 4, the flow velocity of argon gas protection gas is 22L/min, is selected
Select the welding wire of a diameter of 1.6mm.
As the further preferred of above-mentioned technical proposal, in step s 5, welding current 60A, weldingvoltage 13V,
It is welded with the rate of 8mm/s, while wire feed rate is 4.2m/min.
Compared with prior art, the beneficial effects of the invention are as follows：
Conventional TIG Weldings mainly use the welding wire of 1.2mm diameters in the welding for carrying out magnesium alloy, and the present invention is carried
A kind of cold metal transfer welding procedure supplied, the main welding wire for using 1.6mm diameters, corresponding cold metal transfer program have
Splashing amount is reduced to effect, has obtained metastable welding process, while also considerably improve the stability of weldquality.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the magnesium alloy weld appearance photo using the welding of TIG Weldings；
Fig. 2 is the magnesium alloy weld appearance photo of welding procedure welding provided using specific embodiment 3.
Specific embodiment
The present invention is further described with reference to specific embodiment.
Specific embodiment 1
A kind of cold metal transfer welding procedure that the present embodiment is provided, includes the following steps：
S1：Zinc-plated processing is carried out to the welding surface of the alloy material based on ferro element, the thickness of zinc coat is 0.01mm.
S2：The welding surface of alloy material based on magnesium elements is surface-treated, to remove removing oxide layer；Specifically,
It polishes the welding surface of the alloy material based on magnesium elements, is then wiped with acetone first.
S3：Welding gun is moved at welding position, and the angle that the distance of welding gun and sealing is 20mm, welding gun and welding base metal
Angle is 30 °.
S4：Start argon gas protection gas, the flow velocity of argon gas protection gas is 15L/min, selects the welding wire of a diameter of 1.5mm；Tool
Body, welding wire is made of the element of following mass percent：6.5%~8.0% aluminium, 0.8%~1.5% silicon, 1.0%~
1.5% iron, 0.4%~0.6% copper, 0.1%~0.2% titanium, 0.05%~0.15% zinc, 0.05%~0.10%
Manganese, the magnesium of surplus.
S5：The source of welding current is connected, making welding current, weldingvoltage 10V is welded with the rate of 7mm/s for 50A,
Wire feed rate is 3.5m/min simultaneously.
The welding procedure provided using the present embodiment during magnesium alloy is welded, is splashed, and weld seam is put down without apparent
Whole, tight, beautiful, the stability of weldquality is good.
Specific embodiment 2
A kind of cold metal transfer welding procedure that the present embodiment is provided, includes the following steps：
S1：Zinc-plated processing is carried out to the welding surface of the alloy material based on ferro element, the thickness of zinc coat is 1.00mm.
S2：The welding surface of alloy material based on magnesium elements is surface-treated, to remove removing oxide layer；Specifically,
It polishes the welding surface of the alloy material based on magnesium elements, is then wiped with acetone first.
S3：Welding gun is moved at welding position, and the angle that the distance of welding gun and sealing is 10mm, welding gun and welding base metal
Angle is 60 °.
S4：Start argon gas protection gas, the flow velocity of argon gas protection gas is 30L/min, selects the welding wire of a diameter of 1.8mm；Tool
Body, welding wire is made of the element of following mass percent：6.5%~8.0% aluminium, 0.8%~1.5% silicon, 1.0%~
1.5% iron, 0.4%~0.6% copper, 0.1%~0.2% titanium, 0.05%~0.15% zinc, 0.05%~0.10%
Manganese, the magnesium of surplus.
S5：The source of welding current is connected, making welding current, weldingvoltage 15V is welded with the rate of 10mm/s for 80A,
Wire feed rate is 5.0m/min simultaneously.
The welding procedure provided using the present embodiment during magnesium alloy is welded, is splashed, and weld seam is put down without apparent
Whole, tight, beautiful, the stability of weldquality is good.
Specific embodiment 3
A kind of cold metal transfer welding procedure that the present embodiment is provided, includes the following steps：
S1：Zinc-plated processing is carried out to the welding surface of the alloy material based on ferro element, the thickness of zinc coat is 0.2mm.
S2：The welding surface of alloy material based on magnesium elements is surface-treated, to remove removing oxide layer；Specifically,
It polishes the welding surface of the alloy material based on magnesium elements, is then wiped with acetone first.
S3：Welding gun is moved at welding position, and the angle that the distance of welding gun and sealing is 14mm, welding gun and welding base metal
Angle is 40 °.
S4：Start argon gas protection gas, the flow velocity of argon gas protection gas is 22L/min, selects the welding wire of a diameter of 1.6mm；Tool
Body, welding wire is made of the element of following mass percent：6.5%~8.0% aluminium, 0.8%~1.5% silicon, 1.0%~
1.5% iron, 0.4%~0.6% copper, 0.1%~0.2% titanium, 0.05%~0.15% zinc, 0.05%~0.10%
Manganese, the magnesium of surplus.
S5：The source of welding current is connected, making welding current, weldingvoltage 13V is welded with the rate of 8mm/s for 60A,
Wire feed rate is 4.2m/min simultaneously.
The welding procedure provided using the present embodiment during magnesium alloy is welded, is splashed, and weld seam is put down without apparent
Whole, tight, beautiful, the stability of weldquality is good.
As shown in Figure 1, for the magnesium alloy weld appearance using the welding of TIG Weldings；As shown in Fig. 2, for using specific real
Apply the magnesium alloy weld appearance of welding procedure welding that example 3 is provided.
Above to the present invention better embodiment specifically described, certainly, the present invention can also use with it is upper
The different form of embodiment is stated, what those skilled in the art were made under the premise of without prejudice to spirit of the invention is equal
Transformation or corresponding change, should all belong to the scope of protection of the present invention in.
Claims (7)
1. a kind of cold metal transfer welding procedure, which is characterized in that include the following steps：
S1：Carry out zinc-plated processing to the welding surface of the alloy material based on ferro element, the thickness of zinc coat for 0.01~
1.00mm；
S2：The welding surface of alloy material based on magnesium elements is surface-treated, to remove removing oxide layer；
S3：Welding gun is moved at welding position, and the angle that the distance of welding gun and sealing is 10~20mm, welding gun and welding base metal
Angle is 30 °~60 °；
S4：Start argon gas protection gas, the flow velocity of argon gas protection gas is 15~30L/min, selects the weldering of a diameter of 1.5~1.8mm
Silk；
S5：Connect the source of welding current, make welding current for 50~80A, weldingvoltage is 10~15V, with the rate of 7~10mm/s into
Row welding, while wire feed rate is 3.5~5.0m/min.
2. a kind of cold metal transfer welding procedure according to claim 1, it is characterised in that：In step sl, zinc coat
Thickness be 0.2mm.
3. a kind of cold metal transfer welding procedure according to claim 2, it is characterised in that：In step s 2, deoxygenation is gone
Change the method for layer to polish first the welding surface of the alloy material based on magnesium elements, then wiped with acetone.
4. a kind of cold metal transfer welding procedure according to claim 3, it is characterised in that：In step s3, welding gun with
The distance of sealing is 14mm, and the angle angle of welding gun and welding base metal is 40 °.
5. a kind of cold metal transfer welding procedure according to claim 4, it is characterised in that：In step s 4, welding wire by
The element composition of following mass percent：6.5%~8.0% aluminium, 0.8%~1.5% silicon, 1.0%~1.5% iron,
0.4%~0.6% copper, 0.1%~0.2% titanium, 0.05%~0.15% zinc, 0.05%~0.10% manganese, surplus
Magnesium.
6. a kind of cold metal transfer welding procedure according to claim 5, it is characterised in that：In step s 4, argon gas is protected
The flow velocity for protecting gas is 22L/min, selects the welding wire of a diameter of 1.6mm.
7. a kind of cold metal transfer welding procedure according to claim 6, it is characterised in that：In step s 5, welding electricity
It flows and is welded for 60A, weldingvoltage 13V with the rate of 8mm/s, while wire feed rate is 4.2m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810073232.8A CN108161176A (en) | 2018-01-25 | 2018-01-25 | A kind of cold metal transfer welding procedure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810073232.8A CN108161176A (en) | 2018-01-25 | 2018-01-25 | A kind of cold metal transfer welding procedure |
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ID=62515612
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705183A (en) * | 2018-07-18 | 2018-10-26 | 苏州瑞沁精密机械有限公司 | A kind of metal transfer welding method |
| CN113146039A (en) * | 2021-04-28 | 2021-07-23 | 南昌大学 | Preparation and welding method of intermediate layer composite powder for laser welding of magnesium alloy steel |
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| JP2009269071A (en) * | 2008-05-09 | 2009-11-19 | Nissan Motor Co Ltd | Method of bonding different kinds of metal, magnesium alloy and steel |
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| CN102131610A (en) * | 2008-09-08 | 2011-07-20 | 日产自动车株式会社 | Dissimilar metal joining method for magnesium alloy and steel |
| CN102179639B (en) * | 2011-04-12 | 2012-11-07 | 兰州理工大学 | Cold metal transition fusion welding-soldering connection method for magnesium steel dissimilar metal |
| CN103252581A (en) * | 2013-04-23 | 2013-08-21 | 上海工程技术大学 | Alloy powder and method for synchronously sending powder and welding galvanized steel sheet and AZ91D magnesium alloy based on laser |
| CN103372710A (en) * | 2012-04-14 | 2013-10-30 | 兰州理工大学 | Cold metal transition melting-brazing welding connection method for dissimilar magnesium metal and aluminum metal |
| CN106607641A (en) * | 2015-10-23 | 2017-05-03 | 宝山钢铁股份有限公司 | Cold metal transfer welding process of magnesium alloy thin-walled workpiece |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009269071A (en) * | 2008-05-09 | 2009-11-19 | Nissan Motor Co Ltd | Method of bonding different kinds of metal, magnesium alloy and steel |
| CN102131610A (en) * | 2008-09-08 | 2011-07-20 | 日产自动车株式会社 | Dissimilar metal joining method for magnesium alloy and steel |
| CN101856774A (en) * | 2009-04-09 | 2010-10-13 | 通用汽车环球科技运作公司 | By metallurgical reaction welding light metal workpieces |
| CN102179639B (en) * | 2011-04-12 | 2012-11-07 | 兰州理工大学 | Cold metal transition fusion welding-soldering connection method for magnesium steel dissimilar metal |
| CN103372710A (en) * | 2012-04-14 | 2013-10-30 | 兰州理工大学 | Cold metal transition melting-brazing welding connection method for dissimilar magnesium metal and aluminum metal |
| CN103252581A (en) * | 2013-04-23 | 2013-08-21 | 上海工程技术大学 | Alloy powder and method for synchronously sending powder and welding galvanized steel sheet and AZ91D magnesium alloy based on laser |
| CN106607641A (en) * | 2015-10-23 | 2017-05-03 | 宝山钢铁股份有限公司 | Cold metal transfer welding process of magnesium alloy thin-walled workpiece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705183A (en) * | 2018-07-18 | 2018-10-26 | 苏州瑞沁精密机械有限公司 | A kind of metal transfer welding method |
| CN113146039A (en) * | 2021-04-28 | 2021-07-23 | 南昌大学 | Preparation and welding method of intermediate layer composite powder for laser welding of magnesium alloy steel |
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Application publication date: 20180615 |