CN112143920A - Production method of 5087 aluminum alloy welding wire blank - Google Patents
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
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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
- B23K35/22—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
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
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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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- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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Abstract
The invention relates to a production method of a 5087 aluminum alloy welding wire blank. A production method of a 5087 aluminum alloy welding wire blank comprises the following steps: (1) batching according to the components of 5087 aluminum alloy, and obtaining an alloy liquid after complete melting; (2) refining and slagging-off: refining the alloy liquid, completely removing surface slag after refining, and standing at 750-780 ℃ for not less than 20 minutes; (3) degassing and deslagging the alloy liquid after standing; (4) casting: and casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling unit after ingot discharging to produce a 5087 aluminum magnesium alloy welding wire blank. The production method of the 5087 aluminum alloy welding wire blank solves the problems that 5087 aluminum alloy is difficult to process, large compounds are easy to form to influence the internal quality and the like, produces the 5087 aluminum alloy welding wire blank with excellent quality, and is suitable for industrial mass production.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy, and particularly relates to a production method of a 5087 aluminum alloy welding wire blank.
Background
With the continuous development of aluminum alloy welding technology, aluminum alloy welding structures have been widely used in military and civil fields. The welding wire is a necessary filling material for aluminum alloy welding, and thus becomes one of the key factors influencing the quality of the welding seam. The internal quality of the aluminum alloy welding wire depends on the quality of the original aluminum material to a great extent. The aluminum alloy for the welding wire contains more impurities and obvious component segregation, which not only influences the drawing forming of the welding wire and leads the welding wire to be easily broken and the yield to be reduced, but also leads the impurities in the aluminum alloy to be transferred in the whole production process, thereby leading the quality of the welding wire to be poor.
Compared with imported welding wires, the aluminum alloy welding wires produced in China have higher hydrogen content and oxide inclusion content, and the quality of welding seams is seriously influenced. The phenomenon of breaking of the welding wire often appears in the drawing process, mainly because the content of oxide inclusions is high, the crystal grains are coarse, and dendrite segregation exists, so that the plasticity of the aluminum alloy is reduced. The reason for this is mainly that the drawing method is adopted for production in China, and the alloy composition control, melt quality control and product consistency of the welding wire are greatly different from those of foreign manufacturers in the production mode.
The 5087 aluminum alloy is an aluminum-magnesium alloy with a magnesium content of about 4.5%, and is mainly used for producing aluminum alloy welding wires. ER5087 has high strength, good corrosion resistance, good bending property and good thermal crack resistance, and is mainly used in the industries of ships, chemical pressure vessels, oil storage tanks, rail transit, high-speed trains, automobiles and the like.
5087 the Al-Mg alloy is designed to meet the requirement of higher tensile strength, and more Mn, Cr, Zr and other elements are added. The addition of zirconium refines the microstructure of the weld metal. However, zirconium forms coarse compounds in aluminum, and reacts with trace elements such as titanium and boron in aluminum to affect absorption of zirconium, thereby affecting performance of a prepared welding wire, so that the 5087 aluminum-magnesium alloy has the characteristic of high strength and has the problem of easy cracking during processing.
In the prior art, the content of Mn in the aluminum magnesium alloy welding wire is increased to 1.0-2.0 wt%, and the rest chemical components of the welding wire are calculated by weight percent: 4.5 to 5.5 percent of Mg; si is less than or equal to 0.15; fe is less than or equal to 0.25; cr is less than or equal to 0.15; ti is less than or equal to 0.15; cu is less than or equal to 0.10; zn is less than or equal to 0.10; zr is less than or equal to 0.15; the balance being Al and unavoidable impurity elements. The optimum addition amount of the manganese content in the welding wire is 1.5 wt%. Because the manganese content in the aluminum-magnesium alloy welding wire is about the maximum solubility of manganese in alpha solid solution in an aluminum-manganese alloy phase diagram, the aluminum-magnesium alloy welding wire can separate out MnAl6 dispersed particles in the aluminum-magnesium alloy to the maximum extent, thereby improving the strength of a welding seam. The prepared product is similar to Al-5Mg alloy welding wires imported from foreign countries such as 5356; 5183 and 5087 compared with the existing welding wires, the weld joint has a similar elongation percentage to that of the imported welding wire, and the yield strength and tensile strength are improved to a certain extent and are closer to the level of the aluminum-magnesium alloy base metal. However, the technical scheme is a casting extrusion method, and the production efficiency is low.
In view of the above, the invention provides a novel production method of a 5087 aluminum alloy welding wire blank, which solves the problems that 5087 aluminum alloy is difficult to process and is easy to form coarse compounds to influence the internal quality and the like, and is high in production efficiency.
Disclosure of Invention
The invention aims to provide a production method of a 5087 aluminum alloy welding wire blank, which solves the problems that 5087 aluminum alloy is difficult to process, coarse compounds are easy to form to influence the internal quality and the like, produces the 5087 aluminum alloy welding wire blank with excellent quality, and is suitable for industrial batch production.
In order to realize the purpose, the adopted technical scheme is as follows:
a production method of a 5087 aluminum alloy welding wire blank comprises the following steps:
(1) batching 5087 aluminum alloy components, and completely melting the raw materials to obtain an alloy liquid;
(2) refining: refining the alloy liquid, completely removing surface slag after refining, and standing at 750-780 ℃ for not less than 20 minutes;
(3) degassing and deslagging the alloy liquid after standing;
(4) casting and casting-rolling: and casting the alloy liquid after degassing and deslagging, and rolling in a two-roller continuous rolling unit after ingot discharging to obtain a 5087 aluminum magnesium alloy welding wire blank.
Further, the 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
Still further, the ingredients prepared according to the 5087 aluminum alloy composition comprise the following specific raw materials: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
Further, in the step (2), the refining temperature is 720-760 ℃, the dosage of the refining agent is 5-8 per mill, and the refining time is not less than 30 minutes.
Further, in the step (3), online refining and filtering equipment is adopted for degassing and deslagging, the online refining degassing efficiency is over 50%, and the specification of the filter plate is more than or equal to 50 ppi.
Further, in the step (3), before degassing and deslagging, Al-Ti5-C0.2 refining rods are adopted for online refining.
Further, in the step (4), the casting temperature is 680-700 ℃, and the ingot-out temperature is 460-500 ℃.
Furthermore, the diameter of the 5087 aluminum magnesium alloy welding wire blank is 6.0 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, Al-Ti5-C0.2 is used as a refiner, compared with the conventional Al-Ti5-B1 used as a refiner, the content of B in the aluminum alloy can be reduced as much as possible, the generation of coarse compounds due to the reaction of zirconium and boron is avoided, the problem of the coarse compounds in 5087 aluminum alloy is solved, and the occurrence of cracking in the processing process is reduced. And the reaction of zirconium and boron is avoided to generate coarse compounds, so that more zirconium elements can be dissolved in an aluminum alloy phase in a solid mode, and the composition of the 5087 aluminum alloy welding wire blank is uniform.
2. In the process control of the aluminum melt, the temperature is higher than that of the conventional process, and the zirconium element is more favorably dissolved in the aluminum alloy phase in a solid solution mode.
3. Because 5087 aluminum alloy has high strength and high production difficulty, few manufacturers adopting a continuous casting and rolling method are in China, and most of the manufacturers adopt a continuous casting and rolling method and a casting and extruding method for production. The invention realizes the production of 5087 aluminum alloy welding wire blanks by adopting a continuous casting and rolling method through controlling the aspects of raw materials, equipment requirements, component proportion, production process and the like, and is suitable for industrial batch production.
Drawings
FIG. 1 is a macroscopic corrosion photograph of a 5087 alloy ingot prepared in example 1.
Detailed Description
In order to further illustrate the production method of a 5087 aluminum alloy wire blank of the present invention and achieve the intended purpose, the following detailed description of the production method of a 5087 aluminum alloy wire blank according to the present invention, with reference to the preferred embodiments, the structure, the features and the effects thereof, will be made as follows. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following will describe in further detail a production method of a 5087 aluminum alloy wire blank according to the present invention with reference to specific embodiments:
the technical scheme of the invention is as follows:
the equipment requirements are as follows: the main equipment is a melting and holding furnace and a 12-frame two-roller continuous casting and rolling unit, and the equipment is equipped with online refining equipment with degassing efficiency of more than 50% and filtering equipment with filter plate specification of more than or equal to 50 ppi.
A production method of a 5087 aluminum alloy welding wire blank comprises the following steps:
(1) the materials are mixed according to the components of 5087 aluminum alloy, and the alloy liquid is obtained after the materials are completely melted.
(2) Refining and slagging-off: refining the alloy liquid, removing the surface slag after the refining is finished, and standing for more than 20 minutes at 750-780 ℃. (the net value temperature of the conventional aluminum alloy liquid is about 740 ℃, while the standing temperature of the invention is higher than the conventional temperature, so that the zirconium element is better dissolved in the aluminum alloy phase)
(3) And degassing and deslagging after the components of the alloy liquid meet the requirements.
(4) Casting and casting-rolling: and casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling unit after ingot discharging to produce a 5087 aluminum magnesium alloy welding wire blank.
Preferably, the 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
Further preferably, the mixture prepared according to the 5087 aluminum alloy composition comprises the following specific raw materials: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
Preferably, in the step (2), the refining temperature is 720-760 ℃, the dosage of the refining agent is 5-8 per mill, and the refining time is not less than 30 minutes.
Preferably, in the step (3), online refining and filtering equipment is adopted for degassing and deslagging, the online refining degassing efficiency is more than 50%, and the specification of the filter plate is more than or equal to 50 ppi.
Preferably, in the step (3), before degassing and deslagging, Al-Ti5-C0.2 refining rods (the titanium content is 5%, and the C content is 0.2%) are used for online refining. Al-Ti5-C0.2 is used as a refiner, so that the content of B element in the aluminum alloy can be reduced as much as possible, and the reaction of zirconium and boron is avoided to generate coarse compounds. Meanwhile, coarse grains generated in the step (2) by standing at 750-780 ℃ are refined.
Preferably, in the step (4), the casting temperature is 680-700 ℃, and the ingot-discharging temperature is 460-500 ℃.
Preferably, the diameter of the 5087 aluminum magnesium alloy welding wire blank is 6.0 mm.
Example 1.
The specific operation steps are as follows:
(1) selecting and weighing raw materials: selecting and weighing raw materials according to the component proportion.
And adding 1000kg of magnesium ingot, 350kg of AlCr10 intermediate alloy and 250kg of 75Mn agent into 20 tons of aluminum, completely melting, stirring for 10 minutes to uniformly mix the alloy liquid, and controlling the temperature to reach 740 ℃ to obtain the alloy liquid.
The 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
The concrete raw materials are as follows: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
(2) Refining: and refining the alloy liquid at 740 ℃, wherein the dosage of a refining agent is 6 per mill, the time is not less than 40 minutes, removing surface slag after refining is finished, standing at 755 ℃ for 20 minutes, and sampling and detecting.
(3) Opening a furnace eye after the components of the alloy liquid are qualified, carrying out online refining by adopting an Al-Ti5-C refining rod, and carrying out degassing and deslagging by virtue of online refining and filtering equipment. The detected online refining degassing efficiency is 58 percent, and the specification of the filter sheet is 50 ppi.
(4) Casting and casting-rolling: casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling mill set after ingot discharging to produce an aluminum alloy welding wire blank with the diameter of about 6.0 mm; the whole casting process ensures the casting temperature 682-695 ℃ and the ingot outlet temperature 470-490 ℃.
The 5087 alloy ingot prepared in this example was subjected to corrosion, and macroscopic results are shown in fig. 1. As is clear from FIG. 1, the microstructure was good, coarse grains were not present in the interior, and the grain size was uniform.
Example 2.
The specific operation steps are as follows:
(1) selecting and weighing raw materials: selecting and weighing raw materials according to the component proportion.
Adding 18 tons of aluminum, adding 900kg of magnesium ingot, 300kg of AlCr10 intermediate alloy and 220kg of 75Mn agent, completely melting, stirring for 10 minutes to uniformly mix the alloy liquid, and controlling the temperature to reach 730 ℃ to obtain the alloy liquid.
The 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
The concrete raw materials are as follows: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
(2) Refining: refining the alloy liquid at 730 ℃, wherein the dosage of a refining agent is 6 per mill, the time is not less than 40 minutes, removing surface slag after refining is finished, standing at 765 ℃ for 20 minutes, and sampling and detecting.
(3) Opening a furnace eye after the components of the alloy liquid are qualified, carrying out online refining by adopting an Al-Ti5-C refining rod, and carrying out degassing and deslagging by virtue of online refining and filtering equipment. The online refining degassing efficiency is 56 percent through detection, and the specification of the filter sheet is 50 ppi.
(4) Casting and casting-rolling: casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling mill set after ingot discharging to produce an aluminum alloy welding wire blank with the diameter of about 6.0 mm; the whole casting process ensures the casting temperature of 685-.
Example 3.
The specific operation steps are as follows:
(1) selecting and weighing raw materials: selecting and weighing raw materials according to the component proportion.
And adding 19 tons of aluminum, adding 1000kg of magnesium ingot, 350kg of AlCr10 intermediate alloy and 250kg of 75Mn agent, completely melting, stirring for 10 minutes to uniformly mix the alloy liquid, and controlling the temperature to be 720 ℃ to obtain the alloy liquid.
The 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
The concrete raw materials are as follows: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
(2) Refining: refining the alloy liquid at 720 ℃, wherein the dosage of a refining agent is 8 per mill, the time is not less than 50 minutes, removing surface slag after refining is finished, standing at 750 ℃ for 30 minutes, and sampling and detecting.
(3) Opening a furnace eye after the components of the alloy liquid are qualified, carrying out online refining by adopting an Al-Ti5-C refining rod, and carrying out degassing and deslagging by virtue of online refining and filtering equipment. The detected online refining degassing efficiency is 58 percent, and the specification of the filter sheet is 50 ppi.
(4) Casting and casting-rolling: casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling mill set after ingot discharging to produce an aluminum alloy welding wire blank with the diameter of about 6.0 mm; the whole casting process ensures that the casting temperature is 680-690 ℃, and the ingot outlet temperature is 460-480 ℃.
Example 4.
The specific operation steps are as follows:
(1) selecting and weighing raw materials: selecting and weighing raw materials according to the component proportion.
And adding 1000kg of magnesium ingot, 350kg of AlCr10 intermediate alloy and 250kg of 75Mn agent into 20 tons of aluminum, completely melting, stirring for 10 minutes to uniformly mix the alloy liquid, and controlling the temperature to 780 ℃ to obtain the alloy liquid.
The 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
The concrete raw materials are as follows: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
(2) Refining: refining the alloy liquid at 760 ℃, wherein the dosage of a refining agent is 5 per mill, the time is not less than 40 minutes, removing surface slag after refining is finished, standing at 780 ℃ for 30 minutes, and sampling and detecting.
(3) Opening a furnace eye after the components of the alloy liquid are qualified, carrying out online refining by adopting an Al-Ti5-C refining rod, and carrying out degassing and deslagging by virtue of online refining and filtering equipment. The detected online refining degassing efficiency is 58 percent, and the specification of the filter sheet is 50 ppi.
(4) Casting and casting-rolling: casting the alloy liquid after degassing and deslagging, and rolling the alloy liquid in a two-roller continuous rolling mill set after ingot discharging to produce an aluminum alloy welding wire blank with the diameter of about 6.0 mm; the whole casting process ensures the casting temperature of 690-700 ℃ and the ingot outlet temperature of 480-500 ℃.
The products prepared in examples 1 to 4 were subjected to physical property tests. The results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the invention can produce 5087 aluminum alloy welding wire blank with uniform performance and excellent quality.
The invention relates to a process method for producing 5087 aluminum alloy welding wire blank by adopting a continuous casting and rolling method, which solves the problems that 5087 aluminum alloy has higher processing difficulty, is easy to form coarse compounds to influence the internal quality and the like by optimizing a refiner, raw materials, a casting process and the like, produces the 5087 aluminum alloy welding wire blank with uniform components and performance and excellent quality, and is suitable for industrial batch production.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A production method of a 5087 aluminum alloy welding wire blank is characterized by comprising the following steps:
(1) batching 5087 aluminum alloy components, and completely melting the raw materials to obtain an alloy liquid;
(2) refining: refining the alloy liquid, completely removing surface slag after refining, and standing at 750-780 ℃ for not less than 20 minutes;
(3) degassing and deslagging the alloy liquid after standing;
(4) casting and casting-rolling: and casting the alloy liquid after degassing and deslagging, and rolling in a two-roller continuous rolling unit after ingot discharging to obtain a 5087 aluminum magnesium alloy welding wire blank.
2. The production method according to claim 1,
the 5087 aluminum alloy comprises the following components: fe is less than or equal to 0.40 percent, Si is less than or equal to 0.25 percent, Cu is less than or equal to 0.05 percent, Mg: 4.3-5.2%, Mn: 0.7-1.1%, Cr: 0.05 to 0.25%, Zr: 0.10 to 0.20 percent of Zn, less than or equal to 0.20 percent of Ti, less than or equal to 0.15 percent of other single elements, less than or equal to 0.05 percent of other single elements, and less than or equal to 0.15 percent of other total elements.
3. The production method according to claim 2,
the specific raw materials of the mixture prepared according to the 5087 aluminum alloy components are as follows: the quality of the common aluminum above Al99.70 meets the standard requirement of GB/T1196-;
the quality of the magnesium ingot meets the requirements of GB/T3499-;
the quality of the AlZr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of AlCr10 intermediate alloy meets the standard requirements of GB/T27677-;
the quality of the Mn agent meets the requirements of YS/T492-.
4. The production method according to claim 1,
in the step (2), the refining temperature is 720-760 ℃, the dosage of the refining agent is 5-8 per mill, and the refining time is not less than 30 minutes.
5. The production method according to claim 1,
in the step (3), online refining and filtering equipment is adopted for degassing and deslagging, the online refining degassing efficiency is more than 50%, and the specification of the filter plate is more than or equal to 50 ppi.
6. The production method according to claim 1,
in the step (3), before degassing and deslagging, an Al-Ti5-C0.2 refining rod is adopted for online refining.
7. The production method according to claim 1,
in the step (4), the casting temperature is 680-700 ℃, and the ingot-discharging temperature is 460-500 ℃.
8. The production method according to claim 1,
the diameter of the 5087 aluminum-magnesium alloy welding wire blank is 6.0 mm.
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| CN114505559A (en) * | 2022-03-18 | 2022-05-17 | 昆明理工大学 | Cold metal transition arc additive manufacturing method of thin-wall 5087 aluminum alloy component |
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