CN102430575A - Process and device for flattening W-like arc-shaped magnesium alloy blank plate - Google Patents
Process and device for flattening W-like arc-shaped magnesium alloy blank plate Download PDFInfo
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- CN102430575A CN102430575A CN2011104048773A CN201110404877A CN102430575A CN 102430575 A CN102430575 A CN 102430575A CN 2011104048773 A CN2011104048773 A CN 2011104048773A CN 201110404877 A CN201110404877 A CN 201110404877A CN 102430575 A CN102430575 A CN 102430575A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/06—Making sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
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Abstract
The invention relates to the technical field of processing of novel nonferrous metal materials and discloses a process and device for flattening a W-like arc-shaped magnesium alloy blank plate. The process comprises the following step of: successively flattening the W-like arc-shaped plate for three times: (1) carrying out broadening by adopting a W-like gap constituted by two corresponding concave and convex arc-shaped rollers of an arc roller flattening machine; (2) obtaining a smooth magnesium alloy plate by adopting a five-roller flattening machine; and (3) carrying out smoothing and warm rolling with 5% of rolling reduction by adopting a finishing flattening machine to eliminate an extrusion slip line and obtaining a magnesium alloy plate surface with the thickness of 2mm-4mm and the broad width of 620mm by flattening. The device comprises a preliminary flattening machine, a flat plate flattening machine, the finishing flattening machine and a synchronous control system which are arranged along a discharge axial line of the magnesium alloy plate at an outlet of an extruding machine. According to the process and the device disclosed by the invention, a semi-finished product, namely the W-like arc-shaped magnesium alloy blank plate which is produced by a small-tonnage extruding machine, can be flattened, the purpose of increasing the breadth can be achieved by flattening the curved surface, and the flattening of the W-like arc-shaped magnesium alloy blank plate is realized. The process and the device disclosed by the invention have the characteristics of optimized process, reasonable equipment and low investment.
Description
Technical field
The present invention relates to the nonferrous materials processing technique field, relate in particular to a kind of technology and device of the W of flattening shape arc magnesium alloy blanket.
Background technology
Magnesium is one of element the richest on the earth, in present practical applications, is the metal material that quality (1.74g/cm3) is the lightest, specific strength is the highest, compares with the lightweight engineered plastics, and magnesium alloy has higher elasticity and plastic deformation ability; (2.8g/cm3) compares with aluminium alloy, and magnesium alloy is not only light, and anti-vibration and noise reduction sound ability height, and has very strong decay resistance, capability of electromagnetic shielding, shielding property, recovery utilization rate advantages of higher.Therefore; Be the most desirable, the most practical lightweight structural material in pillar industries such as communications and transportation (automobile), Aero-Space, letterpress, electronics (3C Product) and household electrical appliance, be called as the green engineering material of tool development and application potentiality " 21 century ".
The magnesium alloy application form mainly contains cast magnesium alloy and wrought magnesium alloy.Wrought magnesium alloy is through pressure rolling, extruding; Have advantages such as grain refinement, intensity is high, the extension performance is good; Wherein magnesium alloy sheet is expected extensive use in fields such as machine-building, Aero-Space, automobile, electronics, instrument, chemical industry and digital product; Added value of product and economic benefit are higher, have bright prospects.Carry out research and the application with high-performance magnesium-alloy of automobile, motorcycle the earliest in North America, Europe; The demand of magnesium alloy die casting and deformed magnesium alloy material increases with the amplification of annual 20% fast in recent years, and Japan has thrown huge fund and carried out 3C Product Mg Alloy and application.
With at present ripe magnesium alloy cast compared with techniques, the development of Technology of Plastic Processing such as the forging of magnesium alloy, extruding, rolling, punching press and superplastic forming technology is then relatively slow.
Two kinds of technologies of the general employing of current domestic and international production magnesium alloy sheet:
1, finish rolling again after the casting cogging: casting-milling technology parameter control difficulty, maturity is lower, and technical difficulty is higher.Should not realize that package produces continuously.
2, finish rolling again behind the extrusion blooming, advantage are that good, the easy realization of material structure performance is produced continuously, the rolling supply of material, shortcoming be disposablely have high input, template control difficulty.The restriction of machine outlet size and extruding force owing to be squeezed, the general maximum of 2500t extruder cogging width can only reach about 300, and large-tonnage extruder cost is very expensive.Because magnesium belongs to the close-packed hexagonal crystal structure, at room temperature have only a slide surface, 3 solid matter directions are arranged on the slide surface, so have only 3 slip systems under the room temperature, it is moulding cube all lower with body-centered cubic than the center of area.Under the room temperature, the plasticity of magnesium alloy is relatively poor, deformation and be prone to deformation defect, and this has the decision of magnesium alloy self property, also is the essential reason of restriction magnesium alloy machine-shaping.In extrusion process, material yield intensity is low more, and technology stability is high more; Yield tensile ratio is more little, and extrusion performance is good more.Influence factor has: the crystallite dimension of extruding force, extrusion speed, mold temperature, bar temperature, mould structure, bar aging technique, material etc.The crystallite dimension of material and shape have great influence to the extrusion performance of sheet material.
This shows the high investment of process equipment and inefficient production, the low expensive high volume applications that limits the high-performance magnesium-alloy rolled sheet metal that causes of yield rate.
Summary of the invention
For overcoming the deficiency of prior art; The technology and the device that the purpose of this invention is to provide a kind of W of flattening shape arc magnesium alloy blanket; Can satisfy the needed mechanical property condition of rolling magnesium alloy plate, control template, the purpose that realizes the cogging of small-sized extruder wide cut degree with the extrusion die and the corollary equipment of brand new ideas.
For realizing the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of technology that flattens W shape arc magnesium alloy blanket, described W shape arc magnesium alloy blanket are that the magnesium alloy pole obtains through 2500t extruder and the processing of W shape arc Extrusion Porthole Die for Aluminium Profiles tool, and its step is following:
A. first road tentatively flattens, and adopts two corresponding concave, convex camber rolls, constitutes the W shape gap similar with W shape arc blanket, and the W shape arc blanket through gap between it is exerted pressure, and broadening obtains the magnesium alloy arc blanket of wide cut; The W shape arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through two corresponding electrical heating concave, convex camber rolls;
B. second road is dull and stereotyped flattens; Employing is gone up nip rolls and three alternate wide cut tabular gaps that constitute of following nip rolls by two; Wide cut magnesium alloy arc blanket to the broadening through gap between it is exerted pressure, and flattens the smooth magnesium alloy arc blanket that obtains wide cut; The wide cut magnesium alloy arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through five electrically heated nip rolls;
C. the 3rd road polishing flattens; Adopt the corresponding thin plate gap that constitutes of two levels; To the smooth magnesium alloy arc blanket of the wide cut through gap between it with the smooth warm-rolling of 5% drafts; Eliminate the extruding skid wire, the magnesium alloy flat board of wide cut is shown laid flat in the magnesium alloy plate face of the thick wide cut 620mm of 2mm-4mm; The smooth magnesium alloy arc blanket temperature of the wide cut of broadening process is controlled at 230 ℃-280 ℃ through corresponding electrical heating nip rolls about in the of two.
A kind of device that flattens W shape arc magnesium alloy blanket comprises: tentatively flatten machine, dull and stereotyped flattening machine, polishing flattening machine; The import of said preliminary flattening machine is positioned at 2500t extruder outlet place, and the outlet that tentatively flattens machine is corresponding with the import of dull and stereotyped flattening machine, dull and stereotyped flattening machine outlet and polishing to flatten machine corresponding; Said preliminary flattening machine, dull and stereotyped flattening machine, polishing flatten machine and are arranged in order along magnesium alloy plate discharging axis, and be provided with the control system of synchronous working.
A kind of device that flattens W shape arc magnesium alloy blanket, described preliminary flattening machine comprises camber roll, support body; The camber roll that is provided with on the said support body is made up of last camber roll and following camber roll; Have in order to regulate the adjusting clearance mechanism of camber roll and following camber roll relative spacing position, described adjusting clearance mechanism is made up of with the hoist cylinder that is fixed on support body is hinged rotating turret; The two ends of described rotating turret are hinged with support body, hoist cylinder respectively; The described camber roll of going up is connected on the described rotating turret; Described camber roll down links to each other with hydraulic motor through transmission mechanism.
The described camber roll of going up is middle recessed, the curve roll shape structure that both sides are protruding, and the following camber roll on the support body is middle protruding, the curve roll shape structure that recessed and last camber roll roll surface kiss in both sides is joined; And the curve of the following camber roll on the support body is corresponding with the curve of last camber roll, and the said camber roll of going up is an electrical heating camber roll with following camber roll.
A kind of device that flattens W shape arc magnesium alloy blanket, the said dull and stereotyped facility that flatten have two to go up nip rolls and three following nip rolls; Described two last nip rolls lay respectively between three adjacent following nip rolls; Have the adjusting clearance mechanisms that are used to adjust two last nip rolls and three following nip rolls relative spacing positions, described adjusting clearance mechanism is made up of rotating turret and the hoist cylinder that is fixed on support body; The two ends of described rotating turret are hinged with support body, hoist cylinder respectively; Described two last nip rolls are connected on the described rotating turret; Described three following nip rolls are connected with power set through transmission mechanism, and said power set are motor; Said five nip rolls are the electrical heating nip rolls.
A kind of device that flattens W shape arc magnesium alloy blanket, the following nip rolls in the said polishing flattening machine is connected with power set through transmission mechanism, and said power set are motor; The said nip rolls of going up is the electrical heating nip rolls with following nip rolls.
Because adopt aforesaid technical scheme, the present invention has following superiority:
A kind of technology and device that flattens W shape arc magnesium alloy blanket; Can flatten the semi-finished product W shape arc magnesium alloy blanket that the extrusion equipment of little tonnage is produced; The camber line that utilizes point-to-point transmission is forever than the principle of length; Through flattening the purpose that curved surface reaches increases fabric width, realize the flattening of W shape arc magnesium alloy blanket.Have process optimization, equipment is reasonable, invests little characteristics.
Description of drawings
Fig. 1 is the sectional structural map of arc roll of the present invention;
Fig. 2 is flat shape roll sectional structural map;
Fig. 3 is that first road tentatively flattens the machine face sketch map;
Fig. 4 is that first road tentatively flattens pusher side face sketch map;
Fig. 5 is the dull and stereotyped machine face sketch map that flattens in second road;
Fig. 6 is the dull and stereotyped pusher side face sketch map that flattens in second road;
Fig. 7 is that the 3rd road polishing flattens the machine sketch map;
Among the figure: 1. arc roll, 2. wavy surface arc, 3. electrically heated rod, 4. support body, 5. hoist cylinder, 6. hydraulic motor, 7. hoist cylinder, 8. nip rolls.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Like Fig. 1,2,3,4,5,6, shown in 7: a kind of technology that flattens arc magnesium alloy blanket, its step is following:
A. first road tentatively flattens, and adopts two corresponding concave, convex camber rolls, constitutes the W shape gap similar with W shape arc blanket, and the W shape arc blanket through gap between it is exerted pressure, and broadening obtains the magnesium alloy arc blanket of wide cut; The W shape arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through two corresponding electrical heating concave, convex camber rolls;
B. second road is dull and stereotyped flattens; Employing is gone up nip rolls and three alternate wide cut tabular gaps that constitute of following nip rolls by two; Wide cut magnesium alloy arc blanket to the broadening through gap between it is exerted pressure, and flattens the smooth magnesium alloy arc blanket that obtains wide cut; The wide cut magnesium alloy arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through five electrically heated nip rolls;
C. the 3rd road polishing flattens; Adopt the corresponding thin plate gap that constitutes of two levels; To the smooth magnesium alloy arc blanket of the wide cut through gap between it with the smooth warm-rolling of 5% drafts; Eliminate the extruding skid wire, the magnesium alloy flat board of wide cut is shown laid flat in the magnesium alloy plate face of the thick wide cut 620mm of 2mm-4mm; The smooth magnesium alloy arc blanket temperature of the wide cut of broadening process is controlled at 230 ℃-280 ℃ through corresponding electrical heating nip rolls about in the of two;
Like Fig. 1,2,3,4,5,6, shown in 7: a kind of device that flattens W shape arc magnesium alloy blanket comprises: tentatively flatten machine, dull and stereotyped flattening machine, polishing flattening machine; The import of said preliminary flattening machine is positioned at 2500t extruder outlet place, and the outlet that tentatively flattens machine is corresponding with the import of dull and stereotyped flattening machine, dull and stereotyped flattening machine outlet and polishing to flatten machine corresponding; Said preliminary flattening machine, dull and stereotyped flattening machine, polishing flatten machine and are arranged in order along magnesium alloy plate discharging axis, are provided with the control system of synchronous working.
A kind of device that flattens W shape arc magnesium alloy blanket; Like Fig. 3, shown in Figure 4; Said preliminary flattening machine comprises: support body, camber roll 1; Camber roll 1 is made up of last camber roll and following camber roll, and said support body 4 is provided with the adjusting clearance mechanism that is used to regulate camber roll and following camber roll relative spacing position, and said gap adjusting mechanism is connected with hoist cylinder 5 by the rotating turret of the last camber roll that is hinged on support body; The rotating turret two ends of promptly going up the camber roll are hinged with the hoist cylinder 5 that is fixed on the support body with support body 4 respectively; Be provided with certain interval between the following camber roll of static state on last camber roll and the support body, be used for the cambered surface spreading width of rolling magnesium alloy arc 2, and the thickness of adjustment rolling wavy surface arc 2.
Following camber roll on the said support body 4 links to each other with hydraulic motor 6 through transmission mechanism.The said camber roll of going up is middle recessed; The curve roll shape structure that both sides are protruding; The following camber roll that is provided with on the support body 4 is middle protruding; Both sides recessed curve roll shape structure, and down the curve of camber roll is corresponding with the curve of last camber roll, said last camber roll and following camber roll are electrical heating camber roll.
Like Fig. 5, shown in Figure 6, the said dull and stereotyped facility that flatten have two to go up nip rolls and three following nip rolls; Described two last nip rolls lay respectively between three adjacent following nip rolls; Have the adjusting clearance mechanisms that are used to adjust two last nip rolls and three following nip rolls relative spacing positions, described adjusting clearance mechanism is made up of rotating turret and the hoist cylinder 7 that is fixed on support body; The two ends of described rotating turret are hinged with support body, hoist cylinder 7 respectively; Described two last nip rolls are connected on the described rotating turret; Described three following nip rolls are connected with power set through transmission mechanism.Five nip rolls are the electrical heating nip rolls.
Said polishing flattens machine and is made up of level correspondence about two nip rolls that are provided with on the support body, and following nip rolls is connected with power set through transmission mechanism, and power set are motor; The said nip rolls of going up is the electrical heating nip rolls with following nip rolls.
Said camber roll 1, flat-roll 8 are hollow roll, interior arrangement electrically heated rod 3, and have attemperating unit to regulate roller temperature at any time.
Be example with the AZ31 magnesium alloy below
The magnesium alloy cast billet carries out 5 passage multiaxises and forges in 230 ° of C-350 ° C scope, after 460 ° of C high-temperature agings are handled, be processed to the cylindrical rod base of Ф 240mm through the billet after forging.The cylindrical rod base is heated to 380 ° of C-420 ° C, delivers to the extruding of 2500t extruder, is squeezed into magnesium alloy arc 2 through extrusion die.
Before smoothly the arc strip being expanded into flat board, obtain template preferably, the present invention adopts three roads to flatten one by one.It is flat that the first road arc roller flattening machine carries out preview, magnesium alloy arc 2 by as Fig. 3, first road shown in Figure 4 tentatively the flattening machine to carry out preview flat, it is as shown in Figure 1 to flatten the bundle roller; Get into the dull and stereotyped flattening machine in second road subsequently,, be launched into magnesium alloy flat board, band like Fig. 5, shown in Figure 6.It is as shown in Figure 2 that flat pattern is pricked roll structure; For guaranteeing the surface quality and the template of flat board or band; It is as shown in Figure 5 that the 3rd road polishing flattens machine; Flat pattern roll structure is as shown in Figure 2, and polishing flattening machine carries out warm-rolling with 5% drafts to the magnesium alloy plate after flattening, and can significantly eliminate the extruding slide mark on magnesium plate surface; Finally reach the qualified magnesium alloy plate of fabric width 620mm, surface quality and template, obtain satisfied plate face.For guaranteeing the magnesium alloy plate quality; Magnesium alloy plate is during flattening and warm-rolling, and temperature will remain on 230 ° of C. for guaranteeing the temperature conditions of magnesium alloy plate in flattening the operation of rolling, and roll is processed hollow roll; Interior arrangement electrical bar 3; And attemperating unit is arranged, regulate roller temperature at any time, with Mg supplementation plate thermal loss.
Claims (4)
1. technology that flattens W shape arc magnesium alloy blanket, it is characterized in that: its step is following:
A. first road tentatively flattens, and adopts two corresponding concave, convex camber rolls, constitutes the W shape gap similar with W shape arc blanket, and the W shape arc blanket through gap between it is exerted pressure, and broadening obtains the magnesium alloy arc blanket of wide cut; The W shape arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through two corresponding electrical heating concave, convex camber rolls;
B. second road is dull and stereotyped flattens; Employing is gone up nip rolls and three alternate wide cut tabular gaps that constitute of following nip rolls by two; Wide cut magnesium alloy arc blanket to the broadening through gap between it is exerted pressure, and flattens the smooth magnesium alloy arc blanket that obtains wide cut; The wide cut magnesium alloy arc blanket temperature of broadening process is controlled at 230 ℃-280 ℃ through five electrically heated nip rolls;
C. the 3rd road polishing flattens; Adopt the corresponding thin plate gap that constitutes of two levels; To the smooth magnesium alloy arc blanket of the wide cut through gap between it with the smooth warm-rolling of 5% drafts; Eliminate the extruding skid wire, the magnesium alloy flat board of wide cut is shown laid flat in the magnesium alloy plate face of the thick wide cut 620mm of 20mm-40mm; The smooth magnesium alloy arc blanket temperature of the wide cut of broadening process is controlled at 230 ℃-280 ℃ through corresponding electrical heating nip rolls about in the of two.
2. a kind of device that flattens W shape arc magnesium alloy blanket as claimed in claim 1, it is characterized in that: said preliminary flattening machine comprises: support body, camber roll; The camber roll comprises camber roll and following camber roll; Said support body (4) is provided with the adjusting clearance mechanism that is used to regulate camber roll and following camber roll relative spacing position; Said gap adjusting mechanism is connected with hoist cylinder (5) by the rotating turret of the last camber roll that is hinged on support body; The rotating turret two ends of promptly going up the camber roll are hinged with the hoist cylinder (5) that is fixed on the support body with support body 4 respectively; Be provided with certain interval between the following camber roll of static state on last camber roll and the support body; The cambered surface spreading width that is used for rolling magnesium alloy arc 2, and the thickness of adjustment rolling wavy surface arc 2; Following camber roll on the said support body (4) links to each other with hydraulic motor (6) through transmission mechanism; The said camber roll of going up is middle recessed; The curve roll shape structure that both sides are protruding; The following camber roll that is provided with on the support body 4 is middle protruding; Both sides recessed curve roll shape structure, and down the curve of camber roll is corresponding with the curve of last camber roll, said last camber roll and following camber roll are electrical heating camber roll.
3. a kind of device that flattens W shape arc magnesium alloy blanket as claimed in claim 1 is characterized in that: the said dull and stereotyped facility that flatten have two to go up nip rolls and three following nip rolls; Described two last nip rolls lay respectively between three adjacent following nip rolls; Have the adjusting clearance mechanisms that are used to adjust two last nip rolls and three following nip rolls relative spacing positions, described adjusting clearance mechanism is made up of rotating turret and the hoist cylinder (7) that is fixed on support body; The two ends of described rotating turret are hinged with support body, hoist cylinder (7) respectively; Described two last nip rolls are connected on the described rotating turret; Described three following nip rolls are connected with power set through transmission mechanism, and power set are motor; Five nip rolls are the electrical heating nip rolls.
4. a kind of device that flattens W shape arc magnesium alloy blanket as claimed in claim 1; It is characterized in that: said polishing flattens machine and is made up of level correspondence about two nip rolls that are provided with on the support body; Following nip rolls is connected with power set through transmission mechanism, and power set are motor; The said nip rolls of going up is the electrical heating nip rolls with following nip rolls.
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| CN201110404877.3A CN102430575B (en) | 2011-12-08 | 2011-12-08 | Process and device for flattening W-like arc-shaped magnesium alloy blank plate |
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| CN201110404877.3A CN102430575B (en) | 2011-12-08 | 2011-12-08 | Process and device for flattening W-like arc-shaped magnesium alloy blank plate |
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| CN102430575B CN102430575B (en) | 2014-07-02 |
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Cited By (8)
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| CN103008377A (en) * | 2012-12-21 | 2013-04-03 | 重庆市科学技术研究院 | Novel extrusion molding method for magnesium alloy plate |
| CN103212572A (en) * | 2013-04-17 | 2013-07-24 | 燕山大学 | Method for rolling magnesium alloy plate |
| CN105268744A (en) * | 2015-11-23 | 2016-01-27 | 东北大学 | Mill roll system for flattening irregular metal part and flattening rolling method |
| CN106426895A (en) * | 2016-09-29 | 2017-02-22 | 铜陵市超越电子有限公司 | Flattening roller for metallic films |
| CN107282685A (en) * | 2017-06-09 | 2017-10-24 | 福建坤孚股份有限公司 | A kind of production method of short route light sheet |
| CN108067501A (en) * | 2017-11-07 | 2018-05-25 | 东北大学 | Suitable for bloom and the operation roll of mill Curve Design of the big pressure of rectangular bloom high temperature |
| CN109332387A (en) * | 2018-09-30 | 2019-02-15 | 日照钢铁控股集团有限公司 | It is a kind of to prevent the planisher of shape wave and production system and production method among thin gauge hot rolling acid-cleaning formation plate |
| CN112275826A (en) * | 2020-10-10 | 2021-01-29 | 山东华盛荣镁业科技有限公司 | Method and device for preparing magnesium alloy sheet |
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| CN103008377A (en) * | 2012-12-21 | 2013-04-03 | 重庆市科学技术研究院 | Novel extrusion molding method for magnesium alloy plate |
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| CN105268744A (en) * | 2015-11-23 | 2016-01-27 | 东北大学 | Mill roll system for flattening irregular metal part and flattening rolling method |
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| CN108067501B (en) * | 2017-11-07 | 2019-04-19 | 东北大学 | Operation roll of mill curve design method suitable for bloom and the big pressure of rectangular bloom high temperature |
| CN109332387A (en) * | 2018-09-30 | 2019-02-15 | 日照钢铁控股集团有限公司 | It is a kind of to prevent the planisher of shape wave and production system and production method among thin gauge hot rolling acid-cleaning formation plate |
| CN109332387B (en) * | 2018-09-30 | 2021-09-07 | 日照钢铁控股集团有限公司 | Temper mill for preventing middle wave shape, production system and production method |
| CN112275826A (en) * | 2020-10-10 | 2021-01-29 | 山东华盛荣镁业科技有限公司 | Method and device for preparing magnesium alloy sheet |
| CN112275826B (en) * | 2020-10-10 | 2023-11-21 | 山东华盛荣镁业科技有限公司 | Preparation method and device of magnesium alloy sheet |
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