CN110480211B - Preparation method of TIG welding wire for aluminum and aluminum alloy capable of generating Re conversion film by soaking on surface of substrate - Google Patents
Preparation method of TIG welding wire for aluminum and aluminum alloy capable of generating Re conversion film by soaking on surface of substrate Download PDFInfo
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- CN110480211B CN110480211B CN201910771720.0A CN201910771720A CN110480211B CN 110480211 B CN110480211 B CN 110480211B CN 201910771720 A CN201910771720 A CN 201910771720A CN 110480211 B CN110480211 B CN 110480211B
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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
- B23K35/40—Making wire or rods for soldering or welding
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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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
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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
- 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 preparation method of a TIG welding wire for aluminum and aluminum alloy, which is used for generating a Re conversion film by soaking on the surface of a substrate, wherein pure aluminum or aluminum alloy is drawn to a specified wire diameter according to a conventional method, and then is sequentially subjected to ultrasonic cleaning, degreasing, primary water washing, alkaline washing, secondary water washing, soaking, drying, straightening and wire cutting at a traveling speed of 5-8m/s to obtain the TIG welding wire for aluminum and aluminum alloy; the soaking process is to soak the cleaned pure aluminum or aluminum alloy wire rod in a rare earth salt solution at the temperature of 25-35 ℃ for 15-30 min, a liquid-solid phase interface forms a local electrochemical micro-battery, the pure aluminum or aluminum alloy wire rod is used as a cathode, and a Re conversion film is formed on the surface of the pure aluminum or aluminum alloy wire rod by deposition when the local pH value exceeds 8. The RE conversion film generated on the surface of the welding wire can effectively prevent the generation of an aluminum-containing oxide film, and the welding wire has the advantages of large penetration size of a single-pass welding line, high welding efficiency and excellent mechanical property of deposited metal.
Description
Technical Field
The invention relates to the field of welding wire manufacturing, in particular to a preparation method of a TIG welding wire for aluminum and aluminum alloy, which is used for generating a Re conversion film by soaking on the surface of a substrate.
Background
Because aluminum alloy has excellent properties such as high strength, low density, corrosion resistance and the like, the aluminum alloy is widely applied to the fields of aerospace, ship manufacturing, high-speed trains, automobile manufacturing and the like, welding materials and welding methods corresponding to the aluminum alloy are continuously researched and explored, and TIG welding is taken as one of welding methods commonly used for welding aluminum and aluminum alloy and is generally applied to welding thin-wall parts, such as welding storage tanks of rockets, plates of plate heat exchangers, aluminum alloy frames of motorcycles and the like.
At present, the TIG welding wire for aluminum and aluminum alloy has the following defects: 1) the rare earth is added during the metallurgy of the raw materials, and the TIG welding wire for high-quality aluminum and aluminum alloyResearch and development and manufacturing are extremely limited by the chemical composition of raw materials; 2) the traditional manufacturing method of the TIG welding wire for aluminum and aluminum alloy can not avoid generating Al as the main component on the surface of the finished welding wire2O3Thin layer of oxide film of, Al2O3The melting point of the welding seam is 2050 ℃, is generally higher than that of aluminum and aluminum alloy bodies, and the welding seam entering the welding seam during welding can cause defects of oxide inclusion, air holes and the like of the welding seam; 3) when the traditional TIG welding wire for aluminum and aluminum alloy is used for welding, the single-pass welding line has small penetration dimension, the strength of the welding line is limited to a certain extent, and the welding efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of mechanical property and quality of deposited metal of the TIG welding wire for aluminum and aluminum alloy produced by the traditional manufacturing process, provides a method for preparing the TIG welding wire for aluminum and aluminum alloy by soaking the TIG welding wire for aluminum and aluminum alloy into a matrix surface to generate a Re conversion film, is beneficial to improving the flexibility and the initiative of a welding material manufacturer in researching and manufacturing the TIG welding wire for aluminum and aluminum alloy, and the prepared TIG welding wire for aluminum and aluminum alloy has larger single-pass welding line penetration size, higher welding efficiency and more excellent deposited metal mechanical property.
The technical scheme of the invention is as follows:
according to the preparation method of the TIG welding wire for aluminum and aluminum alloy, which is soaked on the surface of a substrate to generate a Re conversion film, pure aluminum or aluminum alloy is drawn to a specified wire diameter according to a conventional method, and then is sequentially subjected to ultrasonic cleaning, degreasing, primary water washing, alkaline washing, secondary water washing, soaking, drying, straightening and wire cutting at a traveling speed of 5-8m/s to obtain the TIG welding wire for aluminum and aluminum alloy; wherein, the soaking process comprises the following steps: and (3) soaking the cleaned pure aluminum or aluminum alloy wire in a rare earth salt solution at the temperature of 25-35 ℃ for 15-30 min, wherein a liquid-solid phase interface forms a local electrochemical micro-battery, and the pure aluminum or aluminum alloy wire is used as a cathode and is deposited on the surface to form a Re conversion film when the local pH value exceeds 8.
Further, the aluminum alloy includes one of Al-Cu, Al-Mn, Al-Si, Al-Mg, Al-Zn-Mg or Al-Zn-Mg-Cu alloy.
Further, the diameter of the pure aluminum or the aluminum alloy is 3.0-10.0 mm.
Furthermore, Re in the Re conversion film on the surface of the TIG welding wire for aluminum and aluminum alloy is a rare earth element containing Ce, Sc or Er.
In the ultrasonic cleaning process, the ultrasonic wave has cavitation action, acceleration action and direct current action in liquid, so that a dirt layer on the surface of the wire rod can be dispersed, emulsified and stripped to achieve the cleaning purpose, and the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, wherein the cleaning speed is 4-8 m/s.
In the degreasing process, alkali and grease can be subjected to saponification reaction to generate soluble soap, and the grease on the surfaces of aluminum and aluminum alloy can be eliminated by using the saponification reaction, so that the degreasing effect on the surface of the welding wire is achieved, and I components of alkali liquor adopted by the degreasing process are as follows: 5 to 40g/LNa3PO4、10～15g/LNa2SiO35-10 g/L liquid soap, 5-20 g/LNa2CO3And 0 to 40g/LNaHCO3The degreasing temperature is 30-80 ℃.
And in the first water washing procedure, removing residual degreasing alkali liquor on the surface of the welding wire to prepare for the next procedure.
In the alkali washing process, Al2O3Can generate meta-aluminate and water in alkali liquor, the meta-aluminate can be hydrolyzed to generate Al (OH)3And precipitating, thereby achieving the effect of removing oxide skin on the surface of the welding wire, wherein the alkali liquor II comprises the following components: 40-60 g/L NaOH and 0.1-30 g/L alkali washing additive, wherein the alkali washing temperature is 40-60 ℃, and the alkali washing time is 2-5 min.
And in the second water washing procedure, removing the alkaline washing alkali liquor remained on the surface of the welding wire, and preparing for the next procedure.
In the soaking procedure, the adopted rare earth salt solution comprises the following components: 10-20 g/L nitrate containing Re element, 1-2.5 g/LKMno4And 0.2 to 0.5g/L (NH)4)2S2O8When aluminum or aluminum alloy is soaked in rare earth salt solution for a long time, a layer of Re conversion film is deposited on the surface of a substrate, and usually, in order to reduce the soaking time, a layer of Re conversion film can be properly added into the rare earth salt solutionOther additives such as a reinforcing oxidant, a film forming accelerator, etc.
In the drying procedure, a dryer is used for drying, the drying temperature is 50-70 ℃, and the drying time is 20-40 min.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with commercially available TIG welding wires of the same model, rare earth elements in the Re conversion film enter a molten pool in a molten drop transition mode to play a role in refining grains when the TIG welding wire with the Re conversion film is used for welding, the strength and the elongation of deposited metal are increased by about 10%, the penetration size of a single-pass welding line is increased by about 20%, the penetration of the welding line is effectively increased, and the welding efficiency is improved.
(2) The invention discloses a method for preparing TIG welding wires for aluminum and aluminum alloys by soaking the TIG welding wires for aluminum and aluminum alloys in a matrix to generate Re conversion films, which enables welding material manufacturers to research and manufacture TIG welding wires for aluminum and aluminum alloys to have higher flexibility and initiative.
(3) The traditional manufacturing method of the TIG welding wire for aluminum and aluminum alloy can not avoid generating Al as the main component on the surface of the finished welding wire2O3The oxide film thin layer can cause defects of weld oxide inclusion, air holes and the like when entering a weld joint during welding, the oxide film on the surface of the TIG welding wire of aluminum and aluminum alloy can be effectively removed through alkaline cleaning, and the RE conversion film protects the surface of the TIG welding wire and prevents the generation of the aluminum-containing oxide film.
Drawings
FIG. 1 is a schematic diagram of the surface topography of a RE conversion film.
Detailed Description
Since 1000 series, 4000 series and 5000 series aluminum alloy welding wires are common types of commercially available TIG welding wires for aluminum and aluminum alloy, SAl 1070 in pure aluminum, SAl4043 in Al-Si alloy and SAl5356 in Al-Mg alloy are selected for further description of the invention, but the scope of protection of the invention is not limited to the TIG welding wires for aluminum and aluminum alloy in the following examples.
Example 1
The preparation method of the TIG welding wire for aluminum and aluminum alloy which are soaked on the surface of a substrate to generate the Re conversion film comprises the steps of selecting SAl 1070 aluminum wire rods with the diameter of 5.56mm as raw materials, drawing the wire rods to 2.0mm according to a conventional mode for surface treatment, and straightening and shredding the wire rods according to the conventional mode after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.0mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 6 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 17g/L Na3PO4、15g/L Na2SiO37g/L liquid soap, 18g/L Na2CO3Degreasing the surface of the wire rod at the degreasing temperature of 65 ℃, wherein the advancing speed of the wire rod is 6 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 55g/L NaOH and 27g/L alkaline washing additive, the alkaline washing temperature is 40 ℃, the alkaline washing is 3min, and the wire rod advancing speed is 6 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 6 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 19g/L nitrate containing Sc element and 2.35g/LKMno4、0.45g/L(NH4)2S2O8Soaking for 17min at 27 ℃, wherein the advancing speed of the wire rod is 6 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer, wherein the drying temperature is 70 ℃, the drying time is 20min, and the advancing speed of the wire rod is 6 m/s.
Example 2
The preparation method of the TIG welding wire for aluminum and aluminum alloy which are soaked in the base body surface to generate the Re conversion film comprises the steps of selecting SAl 1070 aluminum wire rods with the diameter of 9.5mm as raw materials, drawing the wire rods to 2.4mm according to a conventional mode for surface treatment, and straightening and shredding after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.4mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 7 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 15g/L Na3PO4、15g/L Na2SiO38.5g/L liquid soap, 20g/L Na2CO3、37g/L NaHCO3Degreasing the surface of the wire rod at the degreasing temperature of 38 ℃, wherein the advancing speed of the wire rod is 7 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 50g/L NaOH and 23g/L alkaline washing additive, the alkaline washing temperature is 40 ℃, the alkaline washing is 2.5min, and the wire rod advancing speed is 7 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 7 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 20g/L nitrate containing Ce element and 2.4g/L KMnO4、0.5g/L(NH4)2S2O8Soaking for 18min at the temperature of 30 ℃, wherein the advancing speed of the wire rod is 7 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer at the drying temperature of 65 ℃ for 25min, wherein the advancing speed of the wire rod is 7 m/s.
Example 3
The preparation method comprises the steps of selecting SAl4043 aluminum alloy wire rods with the diameter of 5.56mm as raw materials, drawing the wire rods to 2.0mm for surface treatment in a conventional mode, and straightening and shredding after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.0mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 5 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 25g/L Na3PO4、11g/L Na2SiO37g/L liquid soap, 10g/L Na2CO3、25g/L NaHCO3Degreasing the surface of the wire rod at the degreasing temperature of 50 ℃, wherein the advancing speed of the wire rod is 5 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 45g/LNaOH and 10g/L alkaline washing additive, the alkaline washing temperature is 60 ℃, the alkaline washing is 4.5min, and the wire rod advancing speed is 5 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 5 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 13g/L nitrate containing Sc element and 1.5g/L KMnO4、0.35g/L(NH4)2S2O8Soaking for 30min at 35 ℃, wherein the advancing speed of the wire rod is 5 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer at the drying temperature of 50 ℃ for 40min, wherein the advancing speed of the wire rod is 5 m/s.
Example 4
The preparation method comprises the steps of soaking the aluminum and aluminum alloy TIG welding wire for generating the Re conversion film on the surface of a substrate, wherein SAl4043 aluminum alloy wire rods with the diameter of 9.5mm are selected as raw materials, the wire rods are drawn to 2.4mm in a conventional mode for surface treatment, and straightening and shredding are carried out after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.4mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 6 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 20g/L Na3PO4、11g/L Na2SiO38g/L liquid soap, 15g/L Na2CO3、30g/L NaHCO3Degreasing the surface of the wire rod at the degreasing temperature of 55 ℃, wherein the advancing speed of the wire rod is 6 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 50g/L NaOH and 15g/L alkaline washing additive, the alkaline washing temperature is 55 ℃, the alkaline washing is carried out for 4min, and the wire rod advancing speed is 6 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 6 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 14g/L nitrate containing Ce element and 1.2g/L KMnO4、0.3g/L(NH4)2S2O8Soaking for 25min at the temperature of 30 ℃, wherein the advancing speed of the wire rod is 6 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer, wherein the drying temperature is 55 ℃, the drying time is 35min, and the wire rod advancing speed is 6 m/s.
Example 5
SAl5356 aluminum alloy wire rods with the diameter of 5.56mm are selected as raw materials, the wire rods are drawn to 2.0mm for surface treatment according to a conventional mode, and straightening and shredding are carried out after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.0mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 7 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 35g/L Na3PO4、10g/L Na2SiO37g/L liquid soap, 20g/L Na2CO3、20g/L NaHCO3Degreasing the surface of the wire rod at the degreasing temperature of 40 ℃, wherein the advancing speed of the wire rod is 7 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 55g/L NaOH and 20g/L alkaline washing additive, the alkaline washing temperature is 50 ℃, the alkaline washing is carried out for 3min, and the wire rod advancing speed is 7 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 7 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 16g/L nitrate containing Sc element and 1.5g/L KMnO4、0.4g/L(NH4)2S2O8Soaking for 20min at 27 ℃, wherein the advancing speed of the wire rod is 7 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer at the drying temperature of 60 ℃ for 30min, wherein the advancing speed of the wire rod is 7 m/s.
Example 6
SAl5356 aluminum alloy wire rod with the diameter of 9.5mm is selected as the raw material, the wire rod is drawn to 2.4mm for surface treatment according to a conventional mode, and straightening and shredding are carried out after the surface treatment is finished; the surface treatment comprises the following specific steps:
ultrasonic cleaning: feeding the wire rod with the diameter of 2.4mm into an ultrasonic cleaning machine for cleaning; wherein, the ultrasonic cleaning liquid is prepared by using a conventional cleaning agent sold in the market, and the cleaning speed is 8 m/s;
degreasing: the wire rod enters a degreasing tank, and the alkaline solution in the degreasing tank contains 15g/L Na3PO4、14g/L Na2SiO39g/L liquid soap, 20g/L Na2CO3、35g/L NaHCO3Degreasing at 70 deg.CDegreasing the surface of the wire rod, wherein the advancing speed of the wire rod is 8 m/s;
washing with water: cleaning residual degreasing alkaline liquor on the surface of the wire rod by using water in a cleaning tank to prepare for the next procedure;
alkali washing: the wire rod enters an alkaline washing tank, the alkaline liquor components of the alkaline washing tank are 55g/L NaOH and 30g/L alkaline washing additive, the alkaline washing temperature is 40 ℃, the alkaline washing is 2.5min, and the wire rod advancing speed is 8 m/s;
washing with water: removing residual alkaline washing liquid on the surface of the wire rod by using water in an ultrasonic washing tank to prepare for the next working procedure, wherein the wire rod advancing speed is 8 m/s;
soaking: the wire rod enters an immersion tank, and the ingredients of the immersion liquid in the immersion tank are 20g/L nitrate containing Ce element and 2.4g/L KMnO4、0.5g/L(NH4)2S2O8Soaking for 15min at 25 deg.C, with wire advancing speed of 8 m/s;
drying: and (3) drying the wire rod subjected to the surface treatment process in a dryer, wherein the drying temperature is 70 ℃, the drying time is 20min, and the advancing speed of the wire rod is 8 m/s.
The chemical composition (% by weight) of the SAl 1070, SAl4043, and SAl5356 aluminum wire rods used in examples 1-6 are shown in table 1.
The TIG welding wires for aluminum and aluminum alloys with Re conversion coatings on the surfaces, prepared in examples 1 to 6, and the commercially available TIG welding wires of the same model were manually welded according to the welding process parameters in table 2, and the mechanical properties of the deposited metal and the single-pass weld penetration size were measured and are shown in table 3.
Table 1: SAl4043, SAl4043 and SAl5356 aluminum alloy wire rod chemical composition (weight%)
Table 2: welding process parameters
Table 3: mechanical property and fusion depth size of weld deposit metal
The comparison shows that the TIG welding wire for aluminum and aluminum alloy which is soaked on the surface of the substrate to generate the Re conversion film has excellent comprehensive performance and obviously improved welding line mechanical property, wherein the strength and the elongation are improved by about 10 percent, and the penetration size is increased by about 20 percent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention should not be limited by the disclosure of the preferred embodiments. Therefore, it is intended that all equivalents and modifications which do not depart from the spirit of the invention disclosed herein are deemed to be within the scope of the invention.
Claims (3)
1. The preparation method of the TIG welding wire for aluminum and aluminum alloy which generates the Re conversion film on the surface of the matrix by soaking is characterized in that pure aluminum or aluminum alloy is drawn to a specified wire diameter according to a conventional method, and then is sequentially subjected to ultrasonic cleaning, degreasing at 30-80 ℃, first water washing, alkali washing at 40-60 ℃ for 2-5 min, second water washing, soaking, drying at 50-70 ℃ for 20-40 min, straightening and shredding at the advancing speed of 5-8m/s to obtain the TIG welding wire for aluminum and aluminum alloy with the coil rod diameter of 3.0-10.0 mm;
the soaking process comprises the following steps: soaking the cleaned pure aluminum or aluminum alloy wire rod in a rare earth salt solution at the temperature of 25-35 ℃ for 15-30 min, wherein a liquid-solid phase interface forms a local electrochemical micro-battery, and the pure aluminum or aluminum alloy wire rod is used as a cathode and is deposited on the surface to form a Re conversion film when the local pH value of the pure aluminum or aluminum alloy wire rod exceeds 8; re in the Re conversion film is a rare earth element containing Ce, Sc or Er, and the components of the rare earth salt solution are nitrate containing 10-20 g/L of Re element and 1-2.5 g/L KMnO4And 0.2-0.5 g/L (NH)4)2S2O8；
The component of alkali liquor I adopted in the degreasing process is 5-40 g/L Na3PO4、10–15g/L Na2SiO35-10 g/L liquid soap and 5-20 g/L Na2CO3And 0-40 g/L NaHCO3；
The alkali liquor II adopted in the alkali washing process comprises 40-60 g/L NaOH and 0.1-30 g/L alkali washing additive.
2. The method of making a TIG welding wire for aluminum and aluminum alloys of claim 1, wherein the aluminum alloy comprises one of an Al-Cu, Al-Mn, Al-Si, Al-Mg, Al-Zn-Mg, or Al-Zn-Mg-Cu alloy.
3. The method for producing a TIG welding wire for aluminum and aluminum alloys according to claim 1, wherein a cleaning speed in the ultrasonic cleaning step is 4 to 8 m/s.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62212093A (en) * | 1986-03-12 | 1987-09-18 | Kobe Steel Ltd | Solid wire for welding |
| CN101818339A (en) * | 2010-03-30 | 2010-09-01 | 海洋王照明科技股份有限公司 | Surface rare-earth film transforming agent and surface rare-earth film transformation processing method of aluminium alloy |
| CN102234800A (en) * | 2011-07-27 | 2011-11-09 | 华南理工大学 | Aluminum alloy rare earth passivating liquid taking chlorine salt as accelerator and use method thereof |
| CN106624442A (en) * | 2016-11-28 | 2017-05-10 | 安徽飞弧焊业股份有限公司 | High-tenacity less-splashing self-shielded coated flux-cored welding wire and preparation method thereof |
| CN106736013A (en) * | 2016-11-28 | 2017-05-31 | 安徽飞弧焊业股份有限公司 | A kind of low-alloy high-strength steel welding coating welding wire and preparation method |
| CN107904576A (en) * | 2017-11-09 | 2018-04-13 | 北京工业大学 | A kind of aluminium of electrochemical plating Zn+Cu/Re composite coatings and the preparation method of aluminium alloy robot welding wire |
| CN109202329A (en) * | 2017-07-05 | 2019-01-15 | 昆山中冶宝钢焊接材料有限公司 | A kind of 690MPa grades of welding wire for submerged-arc welding of yield strength meeting -60 DEG C of requirements |
-
2019
- 2019-08-21 CN CN201910771720.0A patent/CN110480211B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62212093A (en) * | 1986-03-12 | 1987-09-18 | Kobe Steel Ltd | Solid wire for welding |
| CN101818339A (en) * | 2010-03-30 | 2010-09-01 | 海洋王照明科技股份有限公司 | Surface rare-earth film transforming agent and surface rare-earth film transformation processing method of aluminium alloy |
| CN102234800A (en) * | 2011-07-27 | 2011-11-09 | 华南理工大学 | Aluminum alloy rare earth passivating liquid taking chlorine salt as accelerator and use method thereof |
| CN106624442A (en) * | 2016-11-28 | 2017-05-10 | 安徽飞弧焊业股份有限公司 | High-tenacity less-splashing self-shielded coated flux-cored welding wire and preparation method thereof |
| CN106736013A (en) * | 2016-11-28 | 2017-05-31 | 安徽飞弧焊业股份有限公司 | A kind of low-alloy high-strength steel welding coating welding wire and preparation method |
| CN109202329A (en) * | 2017-07-05 | 2019-01-15 | 昆山中冶宝钢焊接材料有限公司 | A kind of 690MPa grades of welding wire for submerged-arc welding of yield strength meeting -60 DEG C of requirements |
| CN107904576A (en) * | 2017-11-09 | 2018-04-13 | 北京工业大学 | A kind of aluminium of electrochemical plating Zn+Cu/Re composite coatings and the preparation method of aluminium alloy robot welding wire |
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