CN104526126A - TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof - Google Patents
TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof Download PDFInfo
- Publication number
- CN104526126A CN104526126A CN201410694846.XA CN201410694846A CN104526126A CN 104526126 A CN104526126 A CN 104526126A CN 201410694846 A CN201410694846 A CN 201410694846A CN 104526126 A CN104526126 A CN 104526126A
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- Prior art keywords
- welding
- aluminum
- tig
- thickness
- arc
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Classifications
-
- 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
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/32—Accessories
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Abstract
The invention discloses a TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof. The method is characterized by comprising steps of (1) chamfering a joint of a board to be welded, polishing the surface to be welded, washing with an acidic solution for 30 seconds, cleaning with acetone after water washing, and then drying; (2) horizontally butting the board to be welded, and then fixing through a fixing device; (3) performing TIG welding, an setting the welding process parameters; (4) raising the temperature of the welding part to achieve preheating; (5) welding through high-frequency impulse pulse arc, charging argon before arc strike, keeping flowing for 15 to 20 seconds, stably and uniformly conveying welding wires into a weld pond along the front end of the weld pond, increasing the quantity of filled weld wires until an arc pit is fully filled during arc suppression, then controlling the welding current to gradually delay to attenuate, keeping the argon flowing for 15 to 20 seconds after arc extinction so as to prevent a tungsten electrode from oxidizing, continuously charging argon to protect for 30 to 40 seconds after welding. According to the welding process method, the welding process is performed under effective control, so that the whole process and the product quality stability can be ensured, and the unqualified can be decreased.
Description
invention field
The present invention relates to a kind of Aluminum-aluminum alloy welding procedure, the Aluminum-aluminum alloy TIG being specifically related to a kind of 14-16mm thickness of slab welds welding procedure.
Background technology
Aluminium is one of element that in the earth's crust, content is more, and its content reaches 8.8%, occupies first of four large metallic elements, accounts for 1/3 of whole metallic element quality.Due to the improvement of aluminum technology processed, aluminum i ndustry develops with surprising rapidity.By 2004, world aluminum output reached 2,980 ten thousand t, and wherein China is 6,800,000 t, occupies third place in the world, and the kind of aluminium alloy is more than thousand kinds.Due to the development of aluminium, the process technology of aluminium also obtains the progress of advancing by leaps and bounds.Aluminium alloy, because of features such as its quality are light, specific strength high and low temperature performance is good, plasticity is easy to well processing and corrosion-resistant, is widely used in fields such as aerospace industry, Rail car manufacture, pressure vessel and communications and transportation.
Along with the development of aluminium, the process technology of aluminium also obtains the progress of advancing by leaps and bounds.But, because aluminium has multiple physics and the chemical property features such as oxidisability is strong, fusing point is low, heat conduction is fast, linear expansion coefficient is large, the latent heat of fusion is large, therefore, select the welding method be applicable to become the emphasis of concern.
Welding is the important processing method of connection metal.Compared with iron, the oxidisability of aluminium is strong, fusing point is low, heat conduction is fast, linear expansion coefficient is large, the latent heat of fusion is large, elevated temperature strength is low and can form the physics such as low melting point eutectic and chemical property feature, brings a series of difficulty to welding job.
Summary of the invention
For solving the problem, the Aluminum-aluminum alloy TIG that the object of this invention is to provide a kind of 14-16mm thickness of slab welds welding procedure.
The technical solution used in the present invention is:
The Aluminum-aluminum alloy TIG of 14-16mm thickness of slab welds a welding procedure, it is characterized in that, comprises the following steps:
(1) first double-Y shaped groove is opened in sheet material joint to be welded, angle is 65 °-70 °, then by the 800 object abrasive paper for metallograph polishings of soldered surface, then the surface of above-mentioned polishing is cleaned 30 seconds in an acidic solution, cleaning temperature is room temperature, remove metal surface adsorption layer and oxide-film, again with acetone cleaning after washing, then dry;
(2) sheet material level docking to be welded placed, groove root leaves gap 3-5mm, then uses fixture to fix;
(3) adopt TIG weldering, setting welding condition is: welding current 340-380A, shield gas flow rate 22-24L/min, tungsten electrode diameter 6mm, gage of wire 5-6mm, nozzle bore 16-20mm;
(4) to heat preheating to welding position, preheat temperature is 150-200oC, preheating time 40-60 minute;
(5) during welding, adopt high-frequency impulse striking, first argon gas is opened before striking, keep circulation 15-20s, torch neck is from the distance 8-10mm of workpiece, angle between welding gun tungsten electrode and weldment is 65 °-75 °, angle between filler wire and weldment is 18 °-20 °, welding wire is steady along front end, molten bath, uniform feeding molten bath, when receiving arc, receive arc place and increase welding wire loading until arc crater fills up, then welding current time delay decay is gradually controlled, after current interruption, argon gas continues circulation 15-20s, be oxidized to prevent tungsten electrode, after welding terminates, continue logical argon shield 30-40s.
Further, the protective gas of described step (3) is Ar, and the purity of described Ar is 99.999%.
Further, the mixed acid of the acid solution of described step (1) to be HNO3:HCl ratio be 1:3.
Further, the welding machine that described TIG welds welding procedure connects employing exchange way.
Beneficial effect of the present invention:
Welding technique of the present invention makes welding procedure can carry out under effective control, guarantees overall process and constant product quality, reduces the generation of defective phenomenon, be applicable to the welding of the Aluminum-aluminum alloy of 14-16mm thickness of slab.
Detailed description of the invention
The Aluminum-aluminum alloy TIG of a kind of 14-16mm thickness of slab of the present invention welds welding procedure, it is characterized in that, comprises the following steps:
(1) first double-Y shaped groove is opened in sheet material joint to be welded, angle is 65 °-70 °, then by the 800 object abrasive paper for metallograph polishings of soldered surface, then the surface of above-mentioned polishing is cleaned 30 seconds in an acidic solution, cleaning temperature is room temperature, remove metal surface adsorption layer and oxide-film, again with acetone cleaning after washing, then dry;
(2) sheet material level docking to be welded placed, groove root leaves gap 3-5mm, then uses fixture to fix;
(3) adopt TIG weldering, setting welding condition is: welding current 340-380A, shield gas flow rate 22-24L/min, tungsten electrode diameter 6mm, gage of wire 5-6mm, nozzle bore 16-20mm;
(4) to heat preheating to welding position, preheat temperature is 150-200oC, preheating time 40-60 minute;
(5) during welding, adopt high-frequency impulse striking, first argon gas is opened before striking, keep circulation 15-20s, torch neck is from the distance 8-10mm of workpiece, angle between welding gun tungsten electrode and weldment is 65 °-75 °, angle between filler wire and weldment is 18 °-20 °, welding wire is steady along front end, molten bath, uniform feeding molten bath, when receiving arc, receive arc place and increase welding wire loading until arc crater fills up, then welding current time delay decay is gradually controlled, after current interruption, argon gas continues circulation 15-20s, be oxidized to prevent tungsten electrode, after welding terminates, continue logical argon shield 30-40s.
Further, the protective gas of described step (3) is Ar, and the purity of described Ar is 99.999%.
Further, the mixed acid of the acid solution of described step (1) to be HNO3:HCl ratio be 1:3.
Further, the welding machine that described TIG welds welding procedure connects employing exchange way.
Claims (4)
1. the Aluminum-aluminum alloy TIG of 14-16mm thickness of slab welds a welding procedure, it is characterized in that, comprises the following steps:
(1) first double-Y shaped groove is opened in sheet material joint to be welded, angle is 65 °-70 °, then by the 800 object abrasive paper for metallograph polishings of soldered surface, then the surface of above-mentioned polishing is cleaned 30 seconds in an acidic solution, cleaning temperature is room temperature, remove metal surface adsorption layer and oxide-film, again with acetone cleaning after washing, then dry;
(2) sheet material level docking to be welded placed, groove root leaves gap 3-5mm, then uses fixture to fix;
(3) adopt TIG weldering, setting welding condition is: welding current 340-380A, shield gas flow rate 22-24L/min, tungsten electrode diameter 6mm, gage of wire 5-6mm, nozzle bore 16-20mm;
(4) to heat preheating to welding position, preheat temperature is 150-200oC, 40-60 second preheating time;
(5) during welding, adopt high-frequency impulse striking, first argon gas is opened before striking, keep circulation 15-20s, torch neck is from the distance 8-10mm of workpiece, angle between welding gun tungsten electrode and weldment is 65 °-75 °, angle between filler wire and weldment is 18 °-20 °, welding wire is steady along front end, molten bath, uniform feeding molten bath, when receiving arc, receive arc place and increase welding wire loading until arc crater fills up, then welding current time delay decay is gradually controlled, after current interruption, argon gas continues circulation 15-20s, be oxidized to prevent tungsten electrode, after welding terminates, continue logical argon shield 30-40s.
2. the Aluminum-aluminum alloy TIG of a kind of 14-16mm thickness of slab according to claim 1 welds welding procedure, and it is characterized in that: the protective gas of described step (3) is Ar, the purity of described Ar is 99.999%.
3. the Aluminum-aluminum alloy TIG of a kind of 14-16mm thickness of slab according to claim 2 welds welding procedure, it is characterized in that: the mixed acid of the acid solution of described step (1) to be HNO3:HCl ratio be 1:3.
4. the Aluminum-aluminum alloy TIG of a kind of 14-16mm thickness of slab according to claim 1 welds welding procedure, it is characterized in that: the welding machine that described TIG welds welding procedure connects employing exchange way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694846.XA CN104526126A (en) | 2014-11-27 | 2014-11-27 | TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694846.XA CN104526126A (en) | 2014-11-27 | 2014-11-27 | TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof |
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| CN104526126A true CN104526126A (en) | 2015-04-22 |
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| CN201410694846.XA Pending CN104526126A (en) | 2014-11-27 | 2014-11-27 | TIG (tungsten inert gas) welding process of aluminum with thickness of 14-16mm and alloy thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378205A (en) * | 2017-07-19 | 2017-11-24 | 宝钢集团新疆八钢铁有限公司 | A kind of welding procedure of fluid coupling cracked housing and transaxle |
| CN114012206A (en) * | 2021-11-22 | 2022-02-08 | 潍坊新松机器人自动化有限公司 | Arc-closing method of intelligent welding robot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005052858A (en) * | 2003-08-01 | 2005-03-03 | Sekisui Chem Co Ltd | High-speed butt welding method of aluminum material |
| CN102079003A (en) * | 2010-12-31 | 2011-06-01 | 陕西国德电气制造有限公司 | Automatic TIG gasket-free single-side welding and double-side molding process for aluminum alloy |
| CN103586568A (en) * | 2013-10-15 | 2014-02-19 | 国家电网公司 | Aluminum alloy thick plate welding process |
-
2014
- 2014-11-27 CN CN201410694846.XA patent/CN104526126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005052858A (en) * | 2003-08-01 | 2005-03-03 | Sekisui Chem Co Ltd | High-speed butt welding method of aluminum material |
| CN102079003A (en) * | 2010-12-31 | 2011-06-01 | 陕西国德电气制造有限公司 | Automatic TIG gasket-free single-side welding and double-side molding process for aluminum alloy |
| CN103586568A (en) * | 2013-10-15 | 2014-02-19 | 国家电网公司 | Aluminum alloy thick plate welding process |
Non-Patent Citations (2)
| Title |
|---|
| 中国机械工程学会焊接学会: "《焊接手册 第1卷 焊接方法及设备 第3版》", 31 January 2008, article "钨极惰性气体保护焊", pages: 138-146 * |
| 陈祝年: "《焊接工程师手册》", 28 February 2002, article "钨极氩弧焊（TIG焊）", pages: 369-373 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378205A (en) * | 2017-07-19 | 2017-11-24 | 宝钢集团新疆八钢铁有限公司 | A kind of welding procedure of fluid coupling cracked housing and transaxle |
| CN107378205B (en) * | 2017-07-19 | 2020-11-10 | 新疆八一钢铁股份有限公司 | Welding process for cracks of hydraulic coupler shell |
| CN114012206A (en) * | 2021-11-22 | 2022-02-08 | 潍坊新松机器人自动化有限公司 | Arc-closing method of intelligent welding robot |
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Application publication date: 20150422 |
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