CN101347859A - Active welding method and activating agent for aluminum and aluminum alloy - Google Patents
Active welding method and activating agent for aluminum and aluminum alloy Download PDFInfo
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- CN101347859A CN101347859A CNA2008100182644A CN200810018264A CN101347859A CN 101347859 A CN101347859 A CN 101347859A CN A2008100182644 A CNA2008100182644 A CN A2008100182644A CN 200810018264 A CN200810018264 A CN 200810018264A CN 101347859 A CN101347859 A CN 101347859A
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Abstract
The invention discloses an active welding method for aluminum and aluminum alloy and a surfactant. The main component of the surfactant is halide with low melting point, low boiling point and low electrical resistivity. Before the traditional TIG welding, the surfactant is coated evenly on the central area of on the surface of a welding bead to be welded. The width of the surfactant coating is not more than 10mm; a surfactant with high melting, high boiling point and high electrical resistivity is coated at both sides of the surfactant in the area respectively. The total width of the coating at both sides and in middle is more than 20mm, the surfactant of the coating at both sides is SiO2; the surfactant of the coating in middle consists of ZnF2, MnCl2, CdCl2 and Te, the weight percentage content is 5 percent to 15 percent of ZnF2, 40 percent to 55 percent of MnCl2, 20 percent to 35 percent of CdCl2 and 5 percent to 20 percent of Te.
Description
Technical field
The present invention relates to active welding method.
Background technology
Active welding is a kind of novel high-efficiency and energy-saving type solder technology that development and application is worth that has, it passes through at the very thin surfactant of welding bead surface applied one deck to be welded, thereby cause that welding arc shrinks or the interior liquid metal fluidised form of welding pool changes, can make welding penetration reach more than 2 times of traditional welding method.Active welding is applied to argon tungsten-arc welding (TIG weldering, Tungsten Inert Gas Welding) the earliest, has formed the notion of A-TIG (Activating flux TIG) weldering.Because it has outstanding features such as low energy consumption, high efficiency, high-quality, easy and simple to handle and environmental protection, has worldwide caused people's great attention.At present, the A-TIG weldering has been successfully applied to titanium alloy, stainless steel, carbon steel, steel alloy, nickel-base alloy and cobalt-base alloys.And for aluminium and alloy thereof, because the existence of its surface film oxide, must adopt alternating current to weld, and, be difficult to a satisfied simultaneously difficult problem thereby cause carrying out to exist weld penetration significantly to increase when A-TIG welds with appearance of weld because its molten boiling point is lower.France scholar Sire and Marya at aluminium alloy proposed a kind of they be referred to as the welding method of FB-TIG weldering (Flux Bounded TIG Welding), activating agent is coated in welding bead to be welded both sides, certain interval is reserved in the centre, carries out normal TIG weldering then.Though adopt this method can guarantee that appearance of weld is good, it is also unsatisfactory that fusion penetration increases effect.
Summary of the invention
Purpose of the present invention provides a kind of active welding method and activating agent that is applicable to aluminium and aluminium alloy.
The present invention is welding method and the activating agent that is used for the welding of the activity of aluminium and aluminium alloy, before carrying out traditional TIG welding, with main component is that the surfactant of halid eutectic boiling point and low-resistivity evenly is coated in welding bead centre of surface to be welded zone, and the active agent coating width is not more than 10mm; Apply the activating agent of molten boiling point of a floor height and high resistivity respectively in these activating agent both sides, district; The overall width of both sides coating and inter coat is greater than 20mm.Used activating agent, employed both sides coating activating agent is SiO
2The inter coat activating agent is by ZnF
2, MnCl
2, CdCl
2Form with Te, the quality percentage composition is: ZnF
25～15%, MnCl
240～55%, CdCl
220～35%, Te 5～20%.
Through the experimental study of a large amount of systems, find that activating agent shrinks the dominant mechanism that electric arc is activating agent increase weld penetration in the active welding of aluminium and alloy thereof.On the basis of this discovery, the novel active welding that is applicable to aluminium and aluminium alloy that the present invention proposes utilize both sides coating compression arc arc to follow, and inter coat further shrinks electric arc, guarantees that simultaneously appearance of weld is good.So adopt this welding method can guarantee simultaneously that weld penetration increases significantly and appearance of weld is good.Welding method of the present invention is referred to as Flux ZoneTIG welding method, is called for short the FZ-TIG weldering.
Description of drawings
Seam cross-section photo when Fig. 1 is traditional TIG weldering, the seam cross-section photo when Fig. 2 weld for FZ-TIG, Fig. 3 are the face of weld photo that traditional TIG welds and FZ-TIG welds.
The specific embodiment
The present invention is used for the active welding method of aluminium and aluminium alloy and activating agent, before carrying out traditional TIG welding, with main component is that the surfactant of halid eutectic boiling point and low-resistivity evenly is coated in welding bead centre of surface to be welded zone, and the active agent coating width is not more than 10mm; Apply the activating agent of molten boiling point of a floor height and high resistivity respectively in these activating agent both sides, district; The overall width of both sides coating and inter coat is greater than 20mm.
Activating agent acetone, perhaps butanone, perhaps ethanol dissolving is coated in surface of the work after stirring into pasty state equably, is advisable to hide original metallic luster, treats acetone, and perhaps butanone perhaps carries out normal argon tungsten-arc welding after the ethanol volatilization.
The active welding method that is used for aluminium and aluminium alloy of the present invention adopts to exchange and welds, and perhaps adopts straight polarity direct current to weld.
Be used for the activating agent of the activity welding of aluminium and aluminium alloy, employed both sides coating activating agent is SiO
2The inter coat activating agent is by ZnF
2, MnCl
2, CdCl
2Form with Te, the quality percentage composition is: ZnF
25～15%, MnCl
240～55%, CdCl
220～35%, Te 5～20%.
With alumal LF 21 is example, and sample dimensions is 200mm * 80mm * 8mm.Outwash welding bead to be welded surface to remove surface and oil contaminant, is brushed with finer wire, with absolute ethyl alcohol wiping surface of the work till exposing metallic luster then by elder generation before the welding.
First embodiment
Adopt interchange FZ-TIG to weld, the gap between the coating of both sides is 4mm, and the overall width of both sides coating and inter coat is greater than 20mm.Welding conditions are as shown in table 1.Before the welding,, be coated in surface of the work equably with hairbrush after stirring into pasty state, be advisable to hide original metallic luster with the activating agent acetone solution.Treat the acetone conventional TIG of the complete laggard row weldering of volatilizing.
Table 1 welding variables
Employing table 1 welding variables is welded, and the weld penetration of traditional TIG weldering is 1.8～2.2mm, and molten wide is 9.2～10.0mm, and seam cross-section as shown in Figure 1.And employing table 1 welding conditions are carried out FZ-TIG when weldering, and the both sides coating adopts SiO
2, inter coat active agent formulation and weld penetration are molten wide as shown in table 2.
Inter coat active agent formulation and weld penetration that table 2 exchanges the FZ-TIG weldering melt wide
As can be seen from Table 2, adopt FZ-TIG welding welding aluminum alloy, can obviously increase welding penetration, especially No. 2 test specimens, its fusion penetration is more than 3 times of conventional ac tungsten inert gases welding fusion penetration, molten does not widely almost change, as shown in Figure 2, and shaping surface is good, as shown in Figure 3.The weld metal zone microscopic structure is the β-MnAl that distributing on α-Al matrix
6Particle is compared with conventional AC-TIG WELDING weldering, and crystal grain is refinement to some extent.Table 3 is a weld properties, adopts the FZ-TIG welding as can be seen and the good mechanical properties of the activating agent material developed welding gained weld seam.
Table 3 weld properties
Second embodiment
Exchange the FZ-TIG weldering, the composition of inter coat activating agent and mass percent thereof are ZnF
210%, MnCl
245%, CdCl
230%, Te 15%, and the both sides coating adopts SiO
2Gap between the coating of both sides is respectively 4mm, 6mm, 8mm and 10mm, and the overall width of both sides coating and inter coat is greater than 20mm.Before the welding,, be coated in surface of the work equably with hairbrush after stirring into pasty state, be advisable to hide original metallic luster with the activating agent acetone solution.Treat the acetone conventional TIG of the complete laggard row weldering of volatilizing, welding conditions are as shown in table 1.Weld penetration when exchanging the FZ-TIG weldering is molten wide as shown in table 4.
Weld penetration during table 4 different coating gap is molten wide
The 3rd embodiment
Exchange the FZ-TIG weldering, the composition of inter coat activating agent and mass percent thereof are ZnF
210%, MnCl
245%, CdCl
230%, Te 15%, and the both sides coating adopts SiO
2, the gap 4mm between the coating of both sides, the overall width of both sides coating and inter coat is greater than 20mm.Before the welding, activating agent respectively with acetone, butanone and ethanol dissolving, is coated in surface of the work with hairbrush after stirring into pasty state equably, is advisable to hide original metallic luster.Treat the conventional TIG of the complete laggard row weldering of volatilizing of acetone, butanone or ethanol, welding conditions are as shown in table 1.Weld penetration when exchanging the FZ-TIG weldering is molten wide as shown in table 5.
Weld penetration during table 5 different coating gap is molten wide
The 4th embodiment
Adopt straight polarity direct current FZ-TIG to weld, the composition of inter coat activating agent and mass percent thereof are ZnF
210%, MnCl
245%, CdCl
230%, Te 15%, and the both sides coating adopts SiO
2, the gap 4mm between the coating of both sides, the overall width of both sides coating and inter coat is greater than 20mm.Before the welding,, be coated in surface of the work equably with hairbrush after stirring into pasty state, be advisable to hide original metallic luster with the activating agent acetone solution.Treat the acetone conventional TIG of the complete laggard row weldering of volatilizing, welding conditions are as shown in table 6.
Table 6 welding variables
Employing table 6 standard parameter carries out conventional straight polarity direct current TIG weldering, can not open the face of weld oxide-film, and face of weld is because the high temperature action blackout of electric arc is sent out wrinkle.Weld penetration is 2.5mm.And under the same weld standard parameter, the activating agent material that adopts the FZ-TIG welding and developed, because halid effect in the inter coat activating agent, the face of weld oxide-film is opened, and has exposed the metal true qualities of aluminium alloy light.Weld penetration is 6.8mm, is 2.7 times of conventional straight polarity direct current argon tungsten-arc welding.Seam organization is the β-MnAl that distributing on α-Al matrix
6Particle is compared with conventional straight polarity direct current TIG weldering, and crystal grain is refinement to some extent.
Claims (4)
1, the active welding method that is used for aluminium and aluminium alloy, it is characterized in that before carrying out traditional TIG welding, with main component is that the surfactant of halid eutectic boiling point and low-resistivity evenly is coated in welding bead centre of surface to be welded zone, and the active agent coating width is not more than 10mm; Apply the activating agent of molten boiling point of a floor height and high resistivity respectively in these activating agent both sides, district; The overall width of both sides coating and inter coat is greater than 20mm.
2, the active welding method that is used for aluminium and aluminium alloy according to claim 1, it is characterized in that activating agent acetone, perhaps butanone, perhaps ethanol dissolving, be coated in surface of the work equably after stirring into pasty state, be advisable, treat acetone to hide original metallic luster, perhaps butanone perhaps carries out normal argon tungsten-arc welding after the ethanol volatilization.
3, according to claim 1 and the 2 described active welding methods that are used for aluminium and aluminium alloy, it is characterized in that adopting exchanging and weld, perhaps adopt straight polarity direct current to weld.
4, be used for the activating agent of the activity welding of aluminium and aluminium alloy, it is characterized in that employed both sides coating activating agent is SiO
2The inter coat activating agent is by ZnF
2, MnCl
2, CdCl
2Form with Te, the quality percentage composition is: ZnF
25～15%, MnCl
240～55%, CdCl
220～35%, Te 5～20%.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890561A (en) * | 2010-07-20 | 2010-11-24 | 吉林大学 | Method for improving aluminum alloy MIG welding seam penetration |
| CN102179645A (en) * | 2010-10-27 | 2011-09-14 | 天津大学 | Active agent for laser welding and method for laser welding by utilizing same |
| CN102489841A (en) * | 2011-11-24 | 2012-06-13 | 重庆理工大学 | Alloy powder filling tungsten argon arc welding method for aluminum alloys |
| CN102626839A (en) * | 2011-11-24 | 2012-08-08 | 兰州理工大学 | Active agent for titanium alloy tungsten electrode argon arc welding |
| CN102672370A (en) * | 2012-06-01 | 2012-09-19 | 江苏科技大学 | Multi-component active soldering flux for aluminum and aluminum alloy tungsten argon arc welding and preparation method for multi-component active soldering flux |
| CN103317258A (en) * | 2013-07-12 | 2013-09-25 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding and using method |
| CN103447664A (en) * | 2013-08-14 | 2013-12-18 | 桂林市庆通有色金属工艺材料开发有限公司 | Welding method for gas shielded welding of aluminium-alloy vehicle body |
| CN103486363A (en) * | 2013-10-08 | 2014-01-01 | 俞亮亮 | Aluminum alloy pipeline achieving equal-diameter welding and butt joint |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN103624381A (en) * | 2013-11-14 | 2014-03-12 | 北京航空航天大学 | Method for welding non-defective low-energy-consumption 2219 aluminum alloy |
| CN104107974A (en) * | 2013-04-16 | 2014-10-22 | 中国人民解放军装甲兵工程学院 | Low-heat intermittent pulse cold repair method for cast aluminium alloy materials |
| CN106312266A (en) * | 2016-11-08 | 2017-01-11 | 辽宁忠旺铝合金精深加工有限公司 | Welding process of aluminum alloy floor for high-speed rail compartment |
| CN106334859A (en) * | 2016-11-08 | 2017-01-18 | 辽宁忠旺铝合金精深加工有限公司 | The double-gun A-MIG method for welding aluminum alloy floor for high-speed railway carriage |
| CN109158736A (en) * | 2018-10-22 | 2019-01-08 | 山东省科学院新材料研究所 | A kind of method of carbon nanotube enhancing aluminum/magnesium alloy thick plate welded joint |
| CN112756747A (en) * | 2021-01-06 | 2021-05-07 | 陈潮强 | Welding process of aluminum magnesium alloy plate |
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2008
- 2008-05-08 CN CNA2008100182644A patent/CN101347859A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890561A (en) * | 2010-07-20 | 2010-11-24 | 吉林大学 | Method for improving aluminum alloy MIG welding seam penetration |
| CN102179645A (en) * | 2010-10-27 | 2011-09-14 | 天津大学 | Active agent for laser welding and method for laser welding by utilizing same |
| CN102489841A (en) * | 2011-11-24 | 2012-06-13 | 重庆理工大学 | Alloy powder filling tungsten argon arc welding method for aluminum alloys |
| CN102626839A (en) * | 2011-11-24 | 2012-08-08 | 兰州理工大学 | Active agent for titanium alloy tungsten electrode argon arc welding |
| CN102672370A (en) * | 2012-06-01 | 2012-09-19 | 江苏科技大学 | Multi-component active soldering flux for aluminum and aluminum alloy tungsten argon arc welding and preparation method for multi-component active soldering flux |
| CN104107974A (en) * | 2013-04-16 | 2014-10-22 | 中国人民解放军装甲兵工程学院 | Low-heat intermittent pulse cold repair method for cast aluminium alloy materials |
| CN103317258A (en) * | 2013-07-12 | 2013-09-25 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding and using method |
| CN103317258B (en) * | 2013-07-12 | 2015-07-08 | 兰州理工大学 | Active agent for aluminum alloy active TIG welding |
| CN103447664A (en) * | 2013-08-14 | 2013-12-18 | 桂林市庆通有色金属工艺材料开发有限公司 | Welding method for gas shielded welding of aluminium-alloy vehicle body |
| CN103486363A (en) * | 2013-10-08 | 2014-01-01 | 俞亮亮 | Aluminum alloy pipeline achieving equal-diameter welding and butt joint |
| CN103486363B (en) * | 2013-10-08 | 2015-07-08 | 俞亮亮 | Aluminum alloy pipeline achieving equal-diameter welding and butt joint |
| CN103624381A (en) * | 2013-11-14 | 2014-03-12 | 北京航空航天大学 | Method for welding non-defective low-energy-consumption 2219 aluminum alloy |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN106312266A (en) * | 2016-11-08 | 2017-01-11 | 辽宁忠旺铝合金精深加工有限公司 | Welding process of aluminum alloy floor for high-speed rail compartment |
| CN106334859A (en) * | 2016-11-08 | 2017-01-18 | 辽宁忠旺铝合金精深加工有限公司 | The double-gun A-MIG method for welding aluminum alloy floor for high-speed railway carriage |
| CN106334859B (en) * | 2016-11-08 | 2018-09-28 | 辽宁忠旺铝合金精深加工有限公司 | The method for welding high-iron carriage aluminium alloy floor using rush-harvesting and rush-planting A-MIG |
| CN106312266B (en) * | 2016-11-08 | 2018-10-23 | 辽宁忠旺铝合金精深加工有限公司 | A kind of welding procedure of high-iron carriage aluminium alloy floor |
| CN109158736A (en) * | 2018-10-22 | 2019-01-08 | 山东省科学院新材料研究所 | A kind of method of carbon nanotube enhancing aluminum/magnesium alloy thick plate welded joint |
| CN109158736B (en) * | 2018-10-22 | 2021-02-19 | 山东省科学院新材料研究所 | Method for reinforcing aluminum/magnesium alloy thick plate welding joint by carbon nano tube |
| CN112756747A (en) * | 2021-01-06 | 2021-05-07 | 陈潮强 | Welding process of aluminum magnesium alloy plate |
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Open date: 20090121 |