CN105441741A - Aluminum alloy welding material with high compactness and preparation method thereof - Google Patents
Aluminum alloy welding material with high compactness and preparation method thereof Download PDFInfo
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- CN105441741A CN105441741A CN201510777574.4A CN201510777574A CN105441741A CN 105441741 A CN105441741 A CN 105441741A CN 201510777574 A CN201510777574 A CN 201510777574A CN 105441741 A CN105441741 A CN 105441741A
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- aluminium
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- wlding
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- 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
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an aluminum alloy welding material with high compactness and a preparation method thereof. The aluminum alloy welding material conforming to the international standard of a 5356 alloy is used as the basis. The aluminum alloy welding material is characterized in that rare earth elements in the welding material include, by weight, 0.01-0.5% of Be and 0.01-2% of Ce. Through compound addition of microelements Be and Ce in a 5356 aluminum alloy, the Be and the Ce of the added elements are 0.01-0.5% and 0.01-2% respectively according to weight percentage, and the element Be forms a layer of compact oxide film on the surface when the alloy is melted, so that burning loss is prevented and pores are reduced; the alloy grains are refined through the element Ce, so that the alloy strength is improved, and the functions of preventing burning loss and reducing pores are also achieved. By means of compound addition of the Ce and the Be, the path of effectively improving 5356 alloy strength and inhibiting the pores is found.
Description
Technical field
The invention belongs to welding material, especially aluminium alloy wlding manufactures field.
Background technology
In recent years, along with aluminum alloy materials is in aerospace, track traffic, boats and ships naval vessels, pressure vessels for the chemical industry, machinofacture, building structure, application electrically, in automotive industry etc., improve constantly the requirement of aluminum alloy solder technology, the quality of welding quality directly has influence on the use of part.Welded performance, when base material is certain, depends primarily on the alloying constituent of welding wire, performance and weldprocedure.Wherein, welding wire is the important factor of mechanical property, corrosion resistance nature, seam organization composition, liquid-solid liquidus temperature etc. affecting mother metal hot crackability, weld seam.
5356 aluminium alloys, 5356 welding wires are a kind of broad-spectrum universal wldings, and intensity is high, has good corrosion stability.5356 aluminium alloys are used widely in the welded construction of 5XXX system, 6XXX system and 7XXX system.The widespread use of quality to Welded structure of welding wire has material impact.Aluminium alloy welding wire internal soundness depends on primary aluminum material amount to a great extent.Aluminium alloy melt degassing effect is not good, aluminium alloy welding wire hydrogen richness will be made higher, cause and generate more pore in welding process.Welding wire aluminium alloy contains more impurity, and has obvious component segregation, not only can affect the drawing forming of welding wire, welding wire is very easily broken, lumber recovery declines, and the impurity in aluminium alloy can transmit in whole production process, thus causes Quality of Final Welding Wire inferior.The aluminium alloy welding wire that present China produces compared with import welding wire, hydrogen richness and oxide inclusion content higher, had a strong impact on the quality of weld seam.Often there is the phenomenon broken in welding wire, mainly because oxide inclusion content is high, coarse grains, exists dendritic segregation in drawing process, causes the plasticity of aluminium alloy to decline.
It is low and good with the compatibility of other aluminum base alloys that 5356 aluminium close (see table 1) Jin Rong point, it is desirable aluminum-based filler material, and 5356 aluminum alloy corrosion resistants are good, just quite high intensity can be obtained through work hardening, its machinability, anodic oxygen voltinism are good, and intensity under low temperature, fatigue strength are high.So 5356 aluminium alloys are through being usually used in welding aluminum alloy structural part.But intensity is lower, burning loss of alloy, pore are many weakness that 5356 aluminium alloys also also exist.
Table 1
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of aluminium alloy wlding with high-compactness is provided.Effectively prevent from inhibit scaling loss, reduce pore, crystal grain thinning, thus alloy mechanical property is improved.
The object of the invention is by following means realize.
There is an aluminium alloy wlding for high-compactness, based on the aluminium alloy wlding meeting the international standard of 5356 alloys.Containing, for example the rare earth element of lower weight percent in wlding: Be0.01-0.5wt%, Ce0.01-2wt%.
The object of this is also the preparation method providing above-mentioned wlding.The means adopted are:
1), 5356 aluminium alloys are joined in smelting furnace, then smelting furnace temperature increase is stablized to 400 DEG C, then after stablizing once again for three times through 500 DEG C, 600 DEG C, 720 DEG C, aluminium alloy carries out removal of impurities operation after entering molten state completely;
2), impurity removing refining operation is carried out, removing floaters on surface;
3), the aluminium beryllium master alloy needed for proportioning and aluminium cerium master alloy are joined in smelting furnace; According to the standard of 0.3kg/, insulating covering agent KCl and NaCl is evenly sprinkling upon aluminium liquid surface, in process, prevents the H in air
2enter in aluminium liquid, afterwards by temperature increase to 730 DEG C, keep 10 minutes.
4), carry out blinster flotation method removal of impurities, bomb pressure is adjusted to 9Mpa, by the hydrogen constantly blasted in removing aluminium liquid of argon gas, keeping ventilation after 5 minutes, then turn off bomb valve, skims and removes the impurity on aluminium liquid surface in surface;
5), carry out building forming operation, temperature of aluminum liquid is adjusted to 710 DEG C, after insulation 10min, will be placed on by smelting furnace in advance, and aluminium liquid will be poured in the mould of preheating uniformly, naturally cooling, and obtain target wlding.
Adopt material of the present invention and method, by adding micro-Be and Ce to compound in 5356 aluminium alloys, the weight percent of the element added is: Be0.01-0.5wt%, Ce0.01-2wt%, element Be forms the oxide film of one deck densification on surface when alloy dissolution, prevent scaling loss, reduce pore; Elements C e makes alloy grain refinement thus improves alloy strength, also has the effect preventing scaling loss from reducing pore concurrently.The present invention adds Ce and Be by compound, thus finds 5356 alloy strengths effectively to improve and suppress the approach of pore.
Embodiment
1. raw material adopts commercial 5356 alloys, and the interpolation of Be and Ce adopts Al-Be master alloy and Al-Ce master alloy.Ready starting material are carried out the process of baking material, in the smelting furnace of 200 DEG C, process 20h, the water in removing raw material, when avoiding melting, high temperature aluminum and water react and generate foreign gas hydrogen, due to aluminium alloy in the molten state, H
2can incorporate wherein greatly, in process of cooling, solubleness reduces, part H
2can not overflow in time, cause pore, affect alloy and be uniformly distributed situation.
2. carry out melting at SG2-5-12 well formula resistance furnace, 5356 aluminium alloys are joined in smelting furnace, then after smelting furnace temperature increase being stablized to 400 DEG C, temperature is raised to 500 DEG C again after temperature, temperature is raised to 600 DEG C stable after, again by temperature increase to 720 DEG C, allow aluminium alloy enter molten state completely, then carry out except miscellaneous operation.
3. carry out impurity removing refining operation: impurity generally floats on the surface, stir on smelting furnace surface with special glass stick (resistance to 1000 DEG C of high temperature), removing floaters on surface.
4. the aluminium beryllium master alloy needed for proportioning and aluminium cerium master alloy are joined in smelting furnace.Insulating covering agent KCl and NaCl is evenly sprinkling upon aluminium liquid surface (according to 0.3kg/m
2standard), prevent the H in air
2enter in aluminium liquid, afterwards by temperature increase to 730 DEG C, keep 10 minutes.
5. carry out blinster flotation method removal of impurities.Bomb pressure is adjusted to 9Mpa, after drained for the air in flexible pipe and quartz glass tube, stretch in aluminium liquid, constantly blasting by argon gas, the hydrogen in aluminium liquid is constantly taken out of, and other impurity are also constantly brought to surface simultaneously, keep ventilation 5 minutes, then turn off bomb valve, carry out surface with quartz glass tube and skim, the impurity on removing aluminium liquid surface.
6. carry out building forming operation: after refining completes, temperature of aluminum liquid is adjusted to 710 DEG C, after insulation 10min, the mould (80-90 DEG C) of preheating is in advance placed on by smelting furnace, aluminium liquid is poured in mould uniformly, treats its naturally cooling, complete fusion process.
Embodiment
Embodiment 1: in order to compare, 1# sample is 5356 alloys of non-Addition ofelements Be and Ce, and 5356 alloys are put into smelting furnace, after its all fusing, melt temperature is risen to 720 DEG C, leaves standstill 15min, be then cooled to 710 DEG C of casting.The casting composition obtained and performance (weight percent) as shown in table 2.
Table 21# sample alloying constituent and performance
Embodiment 2: 5356 alloys are put into smelting furnace, after its all fusing, rises to 720 DEG C, then the master alloy through preheating is added melt, stir, leave standstill 15min, be then cooled to 710 DEG C of casting by melt temperature.The casting composition obtained and performance (weight percent) as shown in table 3, can see, 2# sample density improves 0.7% than 1# sample, and tensile strength improves 14.8%, and hardness improves 4.4%.
Table 32# sample alloying constituent and performance
Embodiment 3: 5356 alloys are put into smelting furnace, after its all fusing, rises to 720 DEG C, then the master alloy through preheating is added melt, stir, leave standstill 15min, be then cooled to 710 DEG C of casting by melt temperature.The casting composition obtained and performance (weight percent) as shown in table 4, can see, 3# sample density improves 0.8% than 1# sample, and tensile strength improves 20.3%, and hardness improves 14.7%.
Table 43# sample alloying constituent and performance
Embodiment 4: 5356 alloys are put into smelting furnace, after its all fusing, rises to 720 DEG C, then the master alloy through preheating is added melt, stir, leave standstill 15min, be then cooled to 710 DEG C of casting by melt temperature.The casting composition obtained and performance (weight percent) as shown in table 5, can see, 4# sample density improves 1.4% than 1# sample, and tensile strength improves 21.8%, and hardness improves 17.6%.
Table 54# sample alloying constituent and performance
Embodiment 5: 5356 alloys are put into smelting furnace, after its all fusing, rises to 720 DEG C, then the master alloy through preheating is added melt, stir, leave standstill 15min, be then cooled to 710 DEG C of casting by melt temperature.The casting composition obtained and performance (weight percent) as shown in table 6, can see, 5# sample density improves 1.4% than 1# sample, and tensile strength improves 27.7%, and hardness improves 25.0%.
Table 65# sample alloying constituent and performance
Embodiment 6: 5356 alloys are put into smelting furnace, after its all fusing, rises to 720 DEG C, then the master alloy through preheating is added melt, stir, leave standstill 15min, be then cooled to 710 DEG C of casting by melt temperature.The casting composition obtained and performance (weight percent) as shown in table 7, can see, 6# sample density improves 2.1% than 1# sample, and tensile strength improves 29.7%, and hardness improves 27.9%.
Table 76# sample alloying constituent and performance
Above embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. there is an aluminium alloy wlding for high-compactness, based on the aluminium alloy wlding meeting the international standard of 5356 alloys, it is characterized in that, containing, for example the rare earth element of lower weight percent in wlding: Be0.01-0.5wt%, Ce0.01-2wt%.
2. 5356 aluminium alloy wldings as claimed in claim 1, is characterized in that the weight percent of given component is: Be:0.05%, Ce0.7%, all the other compositions meet the international standard of 5356 alloys.
3. 5356 aluminium alloy wldings as claimed in claim 1, is characterized in that the weight percent of given component is: Be:010%, Ce0.40%, all the other compositions meet the international standard of 5356 alloys.
4. 5356 aluminium alloy wldings as claimed in claim 1, is characterized in that the weight percent of given component is: Be:0.10%, Ce0.67%, all the other compositions meet the international standard of 5356 alloys.
5. 5356 aluminium alloy wldings as claimed in claim 1, is characterized in that the weight percent of given component is: Be:0.16%, Ce1.01%, all the other compositions meet the international standard of 5356 alloys.
6. there is described in claim 1 to 5 preparation method of the aluminium alloy wlding of high-compactness, adopt following step:
1), 5356 aluminium alloys are joined in smelting furnace, then smelting furnace temperature increase is stablized to 400 DEG C, then after stablizing once again for three times through 500 DEG C, 600 DEG C, 720 DEG C, aluminium alloy carries out removal of impurities operation after entering molten state completely;
2), impurity removing refining operation is carried out, removing floaters on surface;
3), the aluminium beryllium master alloy needed for proportioning and aluminium cerium master alloy are joined in smelting furnace; According to the standard of 0.3kg/, insulating covering agent KCl and NaCl is evenly sprinkling upon aluminium liquid surface, in process, prevents the H in air
2enter in aluminium liquid, afterwards by temperature increase to 730 DEG C, keep 10 minutes.
4), carry out blinster flotation method removal of impurities, bomb pressure is adjusted to 9Mpa, by the hydrogen constantly blasted in removing aluminium liquid of argon gas, keeping ventilation after 5 minutes, then turn off bomb valve, skims and removes the impurity on aluminium liquid surface in surface;
5), carry out building forming operation, temperature of aluminum liquid is adjusted to 710 DEG C, after insulation 10min, will be placed on by smelting furnace in advance, and aluminium liquid will be poured in the mould of preheating uniformly, naturally cooling, and obtain target wlding.
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| CN201510777574.4A CN105441741A (en) | 2015-11-13 | 2015-11-13 | Aluminum alloy welding material with high compactness and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001983A (en) * | 2016-06-02 | 2016-10-12 | 苏州钎谷焊接材料科技有限公司 | Medium-temperature aluminium alloy brazing filler metal |
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| JP2010279982A (en) * | 2009-06-05 | 2010-12-16 | Sumitomo Light Metal Ind Ltd | Al ALLOY FILLER METAL |
| CN103286471A (en) * | 2013-05-21 | 2013-09-11 | 东北大学 | Novel high-scandium aluminum alloy welding wire |
| CN103451496A (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 | Aluminum-magnesium alloy welding wire for gas shield welding of aluminum-alloy car body and preparation method thereof |
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2015
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Patent Citations (5)
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| JP2010279982A (en) * | 2009-06-05 | 2010-12-16 | Sumitomo Light Metal Ind Ltd | Al ALLOY FILLER METAL |
| CN103286471A (en) * | 2013-05-21 | 2013-09-11 | 东北大学 | Novel high-scandium aluminum alloy welding wire |
| CN103451496A (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 | Aluminum-magnesium alloy welding wire for gas shield welding of aluminum-alloy car body and preparation method thereof |
| CN104722945A (en) * | 2013-12-18 | 2015-06-24 | 中国兵器科学研究院宁波分院 | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001983A (en) * | 2016-06-02 | 2016-10-12 | 苏州钎谷焊接材料科技有限公司 | Medium-temperature aluminium alloy brazing filler metal |
| CN106001983B (en) * | 2016-06-02 | 2021-08-06 | 苏州钎谷焊接材料科技有限公司 | Medium-temperature aluminum alloy brazing filler metal |
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