CN103469036A - Aluminum alloy round cast ingot for high-quality welding wires and manufacturing method thereof - Google Patents
Aluminum alloy round cast ingot for high-quality welding wires and manufacturing method thereof Download PDFInfo
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Abstract
The invention provides an aluminum alloy round cast ingot for high-quality welding wires and a manufacturing method thereof, and relates to an aluminum alloy cast ingot material and a manufacturing method thereof. The problem that the rate of finished aluminum alloy round cast ingots manufactured through an existing method is low can be solved. The aluminum alloy round cast ingot for the high-quality welding wires is composed of, by weight, 6.0-6.5% of Cu, 0.25-0.35% of Mn, 0.007-0.08% of Cr, 0.13-0.15% of Ti, 0.12-0.15% of Zr, 0.06-0.10% of V, 0.0002-0.0007% of Be, and the balance of Al. The manufacturing method comprises the steps of 1 weighing smelting raw materials, 2 smelting the smelting raw materials in sequence, and 3 placing alloy melt into a reverberatory furnace for casting to obtain aluminum alloy round cast ingots. According to the method, hot top casting and the scientific ratio of the raw materials are used for lowering production of cracked wastes which are pulled, and the rate of finished cast ingots reaches 92%.
Description
Technical field
The present invention relates to a kind of aluminium alloy cast ingot material and manufacture method thereof.
Background technology
Welding wire uses aluminium alloy round cast ingot mainly for the production of welding wire, it is the necessary weighting material of Welded material, higher to the ingot metallurgy specification of quality, the semicontinuous casting of tradition direct water-cooling need to be adjusted funnel when casting starts, easily cause the bath surface injustice, there is drop between chute and crystallizer, reduce ingot quality.So in casting, must make the liquid metal in crystallizer be controlled at alap level, could obtain the ingot casting surface of good smooth.But, control liquid metal keep stable low-level be difficult, and low-level casting readily produces the defects such as segregation knurl, cold shut, the ingot casting yield rate is very low, obviously this high quality aluminium alloy round cast ingot of casting is not suitable in this way, because hot direct casting is constructed with its distinctive advantage, so introduce hot direct casting making method when producing this high quality welding wire with aluminium alloy round cast ingot.
Storage tank (instant heating top) of manufacturing with refractory thermal insulating material of installation on short crystallizer, perhaps in the upper gasket layer of insulation material of ordinary mould internal surface, during casting, do not use traditional cursory funnel, melt in storage tank remains on same level with the melt in minute valve plate, and this continuous casting method is called hot direct casting and makes.
Heat die cast at most is a kind of forging type that casting high quality welding wire is used with the circle ingot casting, the heat principal feature of die cast technique at most has the crystallizer inwall to stud with graphite annulus, crystallizing field is narrow, casting speed is fast, and cancelled separating funnel, realized the same level casting, the ingot casting of therefore producing has that internal soundness is good, ingot structure is even, mechanical property is high, ingot casting smooth surface and the high characteristics of production efficiency.The high quality welding wire that existing method is manufactured is with ingot casting owing to using the ordinary mould casting moulding, and the ingot casting surface often has the phenomenon of drawing crack to produce, and internal soundness is unstable, can not meet the standard of extruding, and its ingot casting yield rate is only 65%.
Summary of the invention
The present invention is that the aluminium alloy round cast ingot that will solve existing method manufacture causes because there is Pull crack defect in the ingot casting surface problem that the ingot casting yield rate is low, aluminium alloy round cast ingot and the manufacture method thereof for a kind of high quality welding wire that provide.
High quality welding wire aluminium alloy round cast ingot of the present invention is to be made as the melting raw material by the Al for Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage.
High quality welding wire of the present invention follows these steps to realize by the manufacture method of aluminium alloy round cast ingot:
One, be the Al of Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage, take fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material;
Two, melting raw material step 1 taken is by first adding the fine aluminium ingot, add again master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V, when being 660～700 ℃, melt temperature adds metal Cu, finally when being 720～740 ℃, melt temperature adds the fusing in the resistance reverberatory furnace of packing into of the order of master alloy Al-Be, stir 10～15min under the condition of 700～750 ℃, obtain alloy melt in covering after flux;
Three, alloy melt step 2 obtained imports the standing furnace of resistance reverberatory furnace at the temperature of 730～750 ℃, pass into standing 10～30min after argon gas refining 9～15min, alloy melt liquid level in maintenance resistance reverberatory furnace in the heat top and the alloy melt liquid level in flow table are in same level, then in casting speed, be 130mm/min～145mm/min, casting temp is 715～730 ℃, carries out semicontinuous casting under the condition that the casting cooling water pressure is 0.07～0.10MPa and obtains high quality welding wire aluminium alloy round cast ingot.
The present invention adopts hot direct casting fabrication technique and effectively reduces the generation of drawing crack waste product in conjunction with the scientific matching of aluminium alloy round cast ingot raw material, has shortened the casting time, and has guaranteed the surface quality of ingot casting; Aspect the metal metaideophone, cancelled funnel for stream, realized horizontal for stream, metal bath surface and the metal bath surface in flow table in pushing up by heat keep same level simultaneously, and for internal soundness and the surface quality of improving ingot casting provides favourable condition, the characteristic that the present invention is directed to different-alloy is selected different adding opportunity, solved the problem of the abundant alloying of each element, the ingot casting yield rate increases, and reaches 92%, has solved the low problem of ingot casting ratio of briquetting prepared by existing method.
Embodiment
Embodiment one: present embodiment high quality welding wire aluminium alloy round cast ingot is to be made as the melting raw material by the Al for Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage.
The high quality welding wire obtained by the present embodiment proportioning raw materials produces CuAl with aluminium alloy round cast ingot because Cu can make alloy
2strengthening phase, put forward heavy alloyed intensity.Along with Cu content improves, alloy strength increases.In addition, Cu can improve the welding property of alloy, but, when Cu content surpasses 6.5%, the welding crack coefficient can sharply reduce again.
Mn, Cr are the principal elements that improves refractory alloy, and Ti energy refinement as cast condition crystal grain, put forward heavy alloyed recrystallization temperature, reduces the decomposition tendency of supersaturated solid solution, makes the tissue under alloy high-temp stable, further improves the ability of Alloy Anti thermal crack.But, when Ti content is greater than 0.3%, generate thick needle-like TiAl
3compound, make the thermotolerance of alloy decrease.So Ti content is defined as 0.13%～0.15%.While adding the V of 0.12%～0.15% Zr and 0.06%～0.10% in alloy, can crystal grain thinning, and improved the recrystallization temperature of alloy and the stability of sosoloid, thus improved the thermotolerance of alloy, and improved the weldability of alloy and the plasticity of weld seam.Scaling loss when adding a small amount of Be element simultaneously and can reduce melting.
In present embodiment, the melting raw material is fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu.
Embodiment two: present embodiment is different from embodiment one is that high quality welding wire aluminium alloy round cast ingot is for the Al of Cu:6.25%, Mn:0.3%, Cr:0.05%, Ti:0.14%, Zr:0.13%, V:0.08%, Be:0.0004% and surplus, as the melting raw material, to make by mass percentage.
Embodiment three: present embodiment high quality welding wire follows these steps to realize by the manufacture method of aluminium alloy round cast ingot:
One, be the Al of Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage, take fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material;
Two, melting raw material step 1 taken is by first adding the fine aluminium ingot, add again master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V, when being 660～700 ℃, melt temperature adds metal Cu, finally when being 720～740 ℃, melt temperature adds the fusing in the resistance reverberatory furnace of packing into of the order of master alloy Al-Be, stir 10～15min under the condition of 700～750 ℃, obtain alloy melt in covering after flux;
Three, alloy melt step 2 obtained imports the standing furnace of resistance reverberatory furnace at the temperature of 730～750 ℃, pass into standing 10～30min after argon gas refining 9～15min, alloy melt liquid level in maintenance resistance reverberatory furnace in the heat top and the alloy melt liquid level in flow table are in same level, then in casting speed, be 130mm/min～145mm/min, casting temp is 715～730 ℃, carries out semicontinuous casting under the condition that the casting cooling water pressure is 0.07～0.10MPa and obtains high quality welding wire aluminium alloy round cast ingot.
The order of the master alloy Al-Mn added again, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V described in the present embodiment step 2 can add in any order; Stirring melt described in this step, its whipping process is the both sides fire door convection agitation from the resistance reverberatory furnace.
Present embodiment adopts hot direct casting fabrication technique to effectively reduce the generation of drawing crack waste product, and has guaranteed the surface quality of ingot casting; Aspect the metal metaideophone, cancelled funnel for stream, realized the horizontal stream that supplies, the metal bath surface in the heat top and the interior metal bath surface of flow table remain on same level, for internal soundness and the surface quality of improving ingot casting provides favourable condition.
Embodiment four: what present embodiment was different from embodiment three is that step 1 is the Al of Cu:6.25%, Mn:0.3%, Cr:0.05%, Ti:0.14%, Zr:0.13%, V:0.08%, Be:0.0004% and surplus by mass percentage, takes fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material.Other step and parameter are identical with embodiment three.
Embodiment five: present embodiment is different from embodiment three or four is that the purity of fine aluminium ingot in step 1 is 99.7%.Other step and parameter are identical with embodiment three or four.
Embodiment six: what present embodiment was different from one of embodiment three to five is that step 2 is to stir 10min under the condition of 720 ℃.Other step and parameter are identical with one of embodiment three to five.
Embodiment seven: present embodiment is different from one of embodiment three to six is that flux that step 2 covers is by 45% KCl, 30% NaCl and 25% Na by mass percent
3alF
6form.Other step and parameter are identical with one of embodiment three to six.
Embodiment eight: present embodiment is different from one of embodiment three to seven is that the speed that step 3 passes into argon gas is 0.1～0.15m
3/ min.Other step and parameter are identical with one of embodiment three to seven.
Embodiment nine: what present embodiment was different from one of embodiment three to eight is that step 3 is 140mm/min in casting speed, and casting temp is 730 ℃, under the condition that the casting cooling water pressure is 0.08MPa, carries out semicontinuous casting.Other step and parameter are identical with one of embodiment three to eight.
Embodiment mono-: the present embodiment high quality welding wire follows these steps to realize by the manufacture method of aluminium alloy round cast ingot:
One, be the Al of Cu:6.25%, Mn:0.3%, Cr:0.05%, Ti:0.14%, Zr:0.13%, V:0.08%, Be:0.0004% and surplus by mass percentage, take fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material;
Two, melting raw material step 1 taken is by first adding the fine aluminium ingot, add again master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V, when being 700 ℃, melt temperature adds metal Cu, finally when being 720 ℃, melt temperature adds the fusing in the resistance reverberatory furnace of packing into of the order of master alloy Al-Be, stir 13min under the condition of 720 ℃, obtain alloy melt in covering after flux;
Three, alloy melt step 2 obtained imports the standing furnace of resistance reverberatory furnace at the temperature of 740 ℃, pass into standing 15min after argon gas refining 10min, alloy melt liquid level in maintenance resistance reverberatory furnace in the heat top and the alloy melt liquid level in flow table are in same level, then in casting speed, be 140mm/min, casting temp is 730 ℃, carries out semicontinuous casting under the condition that the casting cooling water pressure is 0.08MPa and obtains high quality welding wire aluminium alloy round cast ingot.
The present embodiment one obtains the high quality welding wire and has reached 92% by the yield rate of aluminium alloy round cast ingot, and tensile strength reaches 236N/mm
2, yield strength has reached 123N/mm
2, the specific elongation rate reaches 20%.
Embodiment bis-: the present embodiment high quality welding wire follows these steps to realize by the manufacture method of aluminium alloy round cast ingot:
One, be the Al of Cu:6.30%, Mn:0.3%, Cr:0.06%, Ti:0.14%, Zr:0.13%, V:0.07%, Be:0.0004% and surplus by mass percentage, take fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material;
Two, melting raw material step 1 taken is by first adding the fine aluminium ingot, add again master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V, when being 700 ℃, melt temperature adds metal Cu, finally when being 720 ℃, melt temperature adds the fusing in the resistance reverberatory furnace of packing into of the order of master alloy Al-Be, stir 15min under the condition of 720 ℃, obtain alloy melt in covering after flux;
Three, alloy melt step 2 obtained imports the standing furnace of resistance reverberatory furnace at the temperature of 735 ℃, pass into standing 20min after argon gas refining 15min, alloy melt liquid level in maintenance resistance reverberatory furnace in the heat top and the alloy melt liquid level in flow table are in same level, then in casting speed, be 135mm/min, casting temp is 725 ℃, carries out semicontinuous casting under the condition that the casting cooling water pressure is 0.07MPa and obtains high quality welding wire aluminium alloy round cast ingot.
The present embodiment obtains the high quality welding wire and has reached 92% by the yield rate of aluminium alloy round cast ingot, and tensile strength reaches 240N/mm
2, yield strength has reached 125N/mm
2, the specific elongation rate reaches 19%.
Claims (9)
1. a high quality welding wire aluminium alloy round cast ingot, is characterized in that high quality welding wire aluminium alloy round cast ingot is to be made as the melting raw material by the Al for Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage.
2. a kind of high quality welding wire aluminium alloy round cast ingot according to claim 1, is characterized in that high quality welding wire aluminium alloy round cast ingot is to make as the melting raw material for the Al of Cu:6.25%, Mn:0.3%, Cr:0.05%, Ti:0.14%, Zr:0.13%, V:0.08%, Be:0.0004% and surplus by mass percentage.
3. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire as claimed in claim 1 is characterized in that the high quality welding wire follows these steps to realization by the manufacture method of aluminium alloy round cast ingot:
One, be the Al of Cu:6.0%～6.5%, Mn:0.25%～0.35%, Cr:0.007%～0.08%, Ti:0.13%～0.15%, Zr:0.12%～0.15%, V:0.06%～0.10%, Be:0.0002%～0.0007% and surplus by mass percentage, take fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material;
Two, melting raw material step 1 taken is by first adding the fine aluminium ingot, add again master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr and master alloy Al-V, when being 660～700 ℃, melt temperature adds metal Cu, finally when being 720～740 ℃, melt temperature adds the fusing in the resistance reverberatory furnace of packing into of the order of master alloy Al-Be, stir 10～15min under the condition of 700～750 ℃, obtain alloy melt in covering after flux;
Three, alloy melt step 2 obtained imports the standing furnace of resistance reverberatory furnace at the temperature of 730～750 ℃, pass into standing 10～30min after argon gas refining 9～15min, alloy melt liquid level in maintenance resistance reverberatory furnace in the heat top and the alloy melt liquid level in flow table are in same level, then in casting speed, be 130mm/min～145mm/min, casting temp is 715～730 ℃, carries out semicontinuous casting under the condition that the casting cooling water pressure is 0.07～0.10MPa and obtains high quality welding wire aluminium alloy round cast ingot.
4. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, it is characterized in that step 1, by mass percentage for the Al of Cu:6.25%, Mn:0.3%, Cr:0.05%, Ti:0.14%, Zr:0.13%, V:0.08%, Be:0.0004% and surplus, takes fine aluminium ingot, master alloy Al-Mn, master alloy Al-Cr, master alloy Al-Ti, master alloy Al-Zr, master alloy Al-V, master alloy Al-Be and metal Cu as the melting raw material.
5. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, the purity that it is characterized in that fine aluminium ingot in step 1 is 99.7%.
6. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, is characterized in that step 2 is to stir 10min under the condition of 720 ℃.
7. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, is characterized in that flux that step 2 covers is to be comprised of 45% KCl, 30% NaCl and 25% Na3AlF6 by mass percent.
8. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, it is characterized in that the speed that step 3 passes into argon gas is 0.1～0.15m
3/ min.
9. the manufacture method of aluminium alloy round cast ingot for a kind of high quality welding wire according to claim 3, is characterized in that step 3 is 140mm/min in casting speed, and casting temp is 730 ℃, under the condition that the casting cooling water pressure is 0.08MPa, carries out semicontinuous casting.
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Cited By (4)
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| CN104313412A (en) * | 2014-10-21 | 2015-01-28 | 东北轻合金有限责任公司 | Manufacturing method of corrosion-resistant, heat-resistant and wear-resistant large-sized solid round high-Si aluminum alloy ingot |
| CN105779831A (en) * | 2016-05-25 | 2016-07-20 | 桂林航天工业学院 | Aluminum alloy welding wire for aerospace and preparation method of aluminum alloy welding wire for aerospace |
| CN108866407A (en) * | 2018-07-19 | 2018-11-23 | 东北轻合金有限责任公司 | A kind of big specification rectangle ingot of aerospace aluminium alloy and its manufacturing method |
| CN110656264A (en) * | 2019-11-05 | 2020-01-07 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy wire for protective fence |
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Cited By (4)
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| CN108866407A (en) * | 2018-07-19 | 2018-11-23 | 东北轻合金有限责任公司 | A kind of big specification rectangle ingot of aerospace aluminium alloy and its manufacturing method |
| CN110656264A (en) * | 2019-11-05 | 2020-01-07 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy wire for protective fence |
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Application publication date: 20131225 |