CN103464702B - A kind of nearly end form building mortion of sheet metal and manufacturing process thereof - Google Patents
A kind of nearly end form building mortion of sheet metal and manufacturing process thereof Download PDFInfo
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- CN103464702B CN103464702B CN201310436252.4A CN201310436252A CN103464702B CN 103464702 B CN103464702 B CN 103464702B CN 201310436252 A CN201310436252 A CN 201310436252A CN 103464702 B CN103464702 B CN 103464702B
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Abstract
The present invention proposes the nearly end form building mortion of a kind of sheet metal and manufacturing process thereof, belongs to the production technical field of sheet metal.The nearly end form building mortion of sheet metal that the present invention proposes, have the Casting Roller of pair of angled layout, internal water cooling, reverse rotation, lower Casting Roller side arranges motlten metal flow distribution device.Said apparatus is adopted to carry out sheet metal nearly end form when being shaped, by flow distribution device, motlten metal is evenly laid on lower Casting Roller roll surface, motlten metal forms molten bath and then completes solidifying and rolling of motlten metal between upper and lower Casting Roller subsequently, and the nearly end form realizing sheet metal is shaped.The nearly end form forming technique of sheet metal that the present invention proposes, can expand the range of application that the nearly end form of sheet metal is shaped, improve the nearly end form shaping degree of sheet metal.
Description
Technical field
The present invention relates to the nearly end form manufacturing process of a kind of sheet metal, belong to the production technical field of sheet metal.
Background technology
The short route of conventional material processing technology and high efficiency are the developing direction of metal material processing technology.The material forming broken traditions and cooked mode, shorten the technological process of production, Simplified flowsheet link, realizes the continuous prodution of nearly end form, short route, can greatly enhance productivity.
As everyone knows, in early stage sheet metal production process, ingot casting and rolling are two independently operations.Continuous and the near end form of sheet metal is shaped, and is the target that people pursue always.
That propose sheet metal nearly end form shaping concept the earliest is pneumatic steelmaking inventor Bessemer, and he proposed in 1846, between water cooled rolls motlten metal being injected a pair reverse rotation from top, realizes solidifying and rolling of motlten metal.Due to the complex nature of the problem and technical conditions restriction, the imagination of Bessemer failed to realize at that time.Through to explore for many years and study, at present, the nearly end form of sheet metal is shaped and achieves industrialization at Al alloys andMg alloys thin plate and steel-sheet production field.
As everyone knows, aluminium alloy double-roller rolling technology to be sent into from the side by aluminium liquid by feed mouth and be arranged vertically for a pair between (or slightly tilt, 15 °), the water cooled rolls that reversely rotates, and aluminium liquid completes and solidifies and rolling between two roller.Rolling can suppress center segregation, reduces follow-up cold rolling workload.Because the contact distance of aluminium liquid and chill roll is shorter, roll casting speed is restricted, and is generally about 1m/min, and the kind of aluminium alloy sheet is also restricted (usually can the solid-liquid two-phase region temperature range of casting-rolling aluminum alloy be less than 50 DEG C).
People are devoted to improve aluminium alloy roll casting speed always, and expanding can the variety range of casting-rolling aluminum alloy.Such as, bibliography 1 proposes a kind of aluminum alloy strip continuous casting and rolling production equipment, and can realize thickness is 1.5-6mm aluminothermy band continuous casting and rolling, and roll casting speed is 2-14m/min.From the angle of enhancing productivity, expect to improve roll casting speed further.
Aluminium alloy double-roller rolling also may be used for the production of magnesium alloy sheet.Bibliography 2 proposes a kind of magnesium alloy thin band ultrahigh speed conticaster, although its forming speed can reach 20-100m/min, but its forming pressure is less than the casting-rolling force of traditional double-roller rolling about 100 times, obviously can not realize rolling deformation, have impact on its nearly end form shaping degree.
As everyone knows, the twin-roll thin strip continuous casting technology of field of steel production, its speed is greater than aluminium alloy double-roller rolling speed, it is injected between the Casting Roller of a pair reverse rotation and fixation side shrouding by top by molten steel to form molten bath, solidify gradually after molten steel contacts with Casting Roller, be pressed into made-up belt in roll gap exit.Molten steel is behind injection molten bath, top, and its flowing is even not, causes solidifying even not, easily occurs surface quality problems.In order to prevent face crack, twin-roll thin strip continuous casting has not allowed rolling deformation, have impact on its nearly end form shaping degree.In order to improve dimensional accuracy and improve structure property, online milling train can only be set and be rolled distortion (such as bibliography 3) further.
Present inventor proposes the nearly end form forming technique of a kind of novel metal thin plate, and it can improve the nearly end form shaping degree of sheet metal further.
Bibliography 1:CN1133512C2004.1.7
Bibliography 2:CN1325197C2007.7.11
Bibliography 3:CN1046446C1999.11.17
Summary of the invention
Analyze above-mentioned background technology, the present invention is found by test, the nearly end form shaping degree of sheet metal nearly end form forming technique, main relevant with two factors, one is time of contact of motlten metal and Casting Roller, its speed with Casting Roller and contact length relevant, two is motlten metal even solidification degree on Casting Roller roll surface, and it depends on the Uniform Flow degree of motlten metal in molten bath.
By testing further discovery, motlten metal is evenly laid on the chill roll roll surface that quick (about 60m/min) rotate with certain speed, motlten metal can be realized contact with the long period of chill roll roll surface and Uniform Flow on chill roll roll surface, prepare the sheet metal of grade thickness.But its upper surface is for freely to solidify, surface irregularity does not have rolling deformation certainly yet.
Further, above this chill roll side, a chill roll can be set again, motlten metal is laid on the lower chill roll roll surface of rotation, makes it along with the rotation of this chill roll by precooling, after the regular hour, molten bath is formed between two chill roll roll surfaces, jointly complete solidifying of motlten metal and rolling deformation by two chill rolls, chill roll is now Casting Roller.
Further, parameter such as adjustment chill roll speed and roll gap etc., can adjust the thickness of sheet metal, adjustment rolling reduction.
Further, the time of contact of adjustment motlten metal and lower chill roll roll surface, the shaping of the metal (alloy) of different two-phase section temperature range can be adapted to.
Propose the present invention according to above-mentioned result of study, the setting of above-mentioned parameter is significant in the present invention.
Fig. 1 and Fig. 2 is the nearly end form building mortion of sheet metal that the present invention proposes.As depicted in figs. 1 and 2, this device has the Casting Roller that pair of angled is arranged, comprises lower Casting Roller 1 and upper Casting Roller 2, two Casting Roller axis being parallel, axial connecting line and vertical direction β at an angle, this angle can adjust within the scope of 30-80 °, the inner water flowing cooling of Casting Roller.The radius R 1 of lower Casting Roller 1 is 100-1000mm, and the radius R 2 of upper Casting Roller 2 is 0.2-1 times of lower Casting Roller radius R 1.The roll surface width B1 of lower Casting Roller 1 is 100-3000mm, the roll surface width B2 0.2-2mm less of lower Casting Roller 1 roll surface width B1 of upper Casting Roller 2.Lower Casting Roller two ends have flange 3, and it is highly 5-50mm, and its width is 10-100mm.The roll surface speed v of lower Casting Roller 1
1for 2-200m/min, the roll surface speed v of upper Casting Roller 2
2for lower Casting Roller 1 roll surface speed v
10.5-1.5 doubly.The roll gap of two Casting Rollers can adjust within the scope of 0.1-10mm.
As shown in Figure 1, in lower Casting Roller side, arrange motlten metal flow distribution device 4, this device adopts double-decker, and internal layer is made up of refractory material, and skin is Plate Welding, adopts this device motlten metal evenly can be laid in the upper surface of lower Casting Roller.
Casting Roller 1,2 adopt steel alloy or copper alloys, and it is fixed, adjust, internal water cooling, driving and speed governing all adopt known technology.
The sheet metal nearly end form building mortion adopting the present invention to propose carries out sheet metal nearly end form when being shaped, first melting is carried out to metal, then start and adjust the nearly end form building mortion of sheet metal, motlten metal 5 is injected flow distribution device 4, the degree of superheat of motlten metal is 10-70 DEG C.Motlten metal 5 is evenly laid in the upper surface of lower Casting Roller 1 through flow distribution device 4, and along with the rotation of lower Casting Roller 1, motlten metal forms molten bath 6 between lower Casting Roller 1 and upper Casting Roller 2.Under the acting in conjunction of lower Casting Roller 1 and upper Casting Roller 2, complete solidifying and immediately to its rolling, obtaining sheet metal 7 of motlten metal.The rolling reduction of thin plate is 5-50%.Gauge of sheet is 0.5-10mm.The control of above-mentioned forming process adopts known control technology.
Sheet metal prepared by the above-mentioned metal sheet profiled apparatus and method adopting the present invention to propose, its thickness is 0.5-10mm, width is 100-3000mm, solid-liquid two-phase region width is 1-100 DEG C, and material comprises carbon steel, stainless steel, silicon steel and other iron and steel and aluminium alloy, magnesium alloy, copper alloy and other non-ferrous metal.
Accompanying drawing explanation
Fig. 1 is the nearly end form building mortion of sheet metal that the present invention proposes;
Description of reference numerals:
1---lower Casting Roller;
2---upper Casting Roller;
3---lower Casting Roller flange;
4---motlten metal flow distribution device;
5---motlten metal;
6---molten bath;
7---the sheet metal after shaping.
Fig. 2 is the A direction view of Fig. 1.
Detailed description of the invention
[embodiment 1]
The nearly end form of 2024 aluminium alloys (aluminium copper) thin plate is shaped
Adopt conventional twin roll casting rolling method can not produce 2024 aluminium alloys.
First prepare burden according to alloying component, by after ready aluminium ingot, intermediate alloy fusing in smelting furnace, molten aluminum liquid, by skimming, stirring, imports standing furnace, and molten aluminum liquid carries out leaving standstill in standing furnace, refining.
Adjustment flow distribution device, starts and adjusts the nearly end form building mortion of metal sheet band.
Molten aluminium alloy after refining is imported chute from head piece, then enters purifying processing device.Molten aluminium alloy enters flow distribution device after flowing out from purifying processing device.
Molten aluminium alloy evenly enters the nearly end form building mortion of sheet metal through flow distribution device, pouring temperature is 680 DEG C, the nearly end form building mortion of metal sheet band adopts steel Casting Roller, lower Casting Roller radius is 300mm, width is 2000mm, flange height is 40mm, flange width is 40mm, and direct casting roller radius is 150mm, and width is 1999mm.Adjustment Casting Roller inclination angle and other technological parameter realize stable formation process, and the stable formation stage, upper and lower Casting Roller roll surface speed was 60m/min.Rolling reduction is 30-40%, and 2024 aluminum alloy thin plate thickness are 2mm, and width is 2000mm.
The curling rolling of 2024 aluminium alloy sheet that last end form is nearly shaped.
[embodiment 2]
The nearly end form of SUS304 stainless sheet steel is shaped
Adopt converter or electro-smelting molten steel, then carry out application of vacuum, the molten steel after application of vacuum is injected steel ladle.
Adjustment flow distribution device, starts and adjusts the nearly end form building mortion of metal sheet band.
Steel ladle is transported to ladle turret, opens ladle nozzle and molten steel is injected tundish, to setting molten steel height, open middle water containing opening, molten steel is imported flow distribution device.
Molten steel evenly enters the nearly end form building mortion of sheet metal through flow distribution device, pouring temperature is 1480 DEG C, the nearly end form building mortion of metal sheet band adopts steel Casting Roller, lower Casting Roller radius is 500mm, width is 1300mm, flange height is 50mm, flange width is 50mm, and direct casting roller radius is 250mm, and width is 1299mm.Adjustment Casting Roller inclination angle and other technological parameter realize stable formation process, and the stable formation stage, upper and lower Casting Roller roll surface speed was 60m/min.Rolling reduction is 20-30%, SUS304 Thin Stainless Steel plate thickness is 5mm, and width is 1300mm.
The curling rolling of SUS304 stainless sheet steel that last end form is nearly shaped.
[embodiment 3]
The nearly end form of 6.5%Si silicon plate is shaped
Adopt converter or electro-smelting molten steel, then carry out application of vacuum, the molten steel after application of vacuum is injected steel ladle.
Adjustment flow distribution device, starts and adjusts the nearly end form building mortion of metal sheet band.
Steel ladle is transported to ladle turret, opens ladle nozzle and molten steel is injected tundish, to setting molten steel height, open middle water containing opening, molten steel is imported flow distribution device.
Molten steel evenly enters the nearly end form building mortion of sheet metal through flow distribution device, pouring temperature is 1470 DEG C, the nearly end form building mortion of metal sheet band adopts steel Casting Roller, lower Casting Roller radius is 400mm, width is 1500mm, flange height is 40mm, flange width is 40mm, and direct casting roller radius is 200mm, and width is 1499mm.Adjustment Casting Roller inclination angle and other technological parameter realize stable formation process, and under the stable formation stage, Casting Roller roll surface speed is 60m/min, and direct casting roll surface linear velocity is 70m/min.Rolling reduction is 20-30%, 6.5%Si silicon plate thickness is 1.5mm, and width is 1500mm.
The curling rolling of 6.5%Si silicon plate that last end form is nearly shaped.
In embodiment 1, adopt the nearly end form that present invention achieves 2024 aluminium alloy sheets that existing aluminum alloy cast rolling method can not be adopted to produce to be shaped, and its forming speed is higher than the speed of existing aluminium alloy casting.
In embodiment 2, adopt the present invention to achieve solidifying of SUS304 stainless sheet steel and rolling simultaneously, and adopt existing method for continuous casting sheet band by dual roller not realize rolling deformation.
In embodiment 3, adopt the present invention to achieve solidifying of 6.5% silicon plate and rolling simultaneously, and can asymmetrical rolling be realized.And adopt existing method for continuous casting sheet band by dual roller not realize rolling deformation.
As can be seen from embodiment 1-embodiment 3, compared with the nearly end form forming technique of existing sheet metal, the nearly end form forming technique of sheet metal that the present invention proposes, can expand the range of application that the nearly end form of sheet metal is shaped, improve the nearly end form shaping degree of sheet metal.
Claims (9)
1. the nearly end form building mortion of sheet metal, is characterized in that, this building mortion comprises the Casting Roller that pair of angled is arranged, be respectively Casting Roller and lower Casting Roller, two Casting Roller axis being parallel, at an angle, the inner water flowing of described Casting Roller cools for axial connecting line and vertical direction;
Described lower Casting Roller side arranges motlten metal flow distribution device, and this device adopts double-decker, and internal layer is made up of refractory material, skin is Plate Welding, adopt this flow distribution device motlten metal to be evenly laid in the upper surface of lower Casting Roller, cloth flow export is positioned at directly over lower roll, tangent with roll surface;
Described angle can adjust within the scope of 20-80 °.
2. the nearly end form building mortion of sheet metal according to claim 1, described lower Casting Roller radius is 100-1000mm, and direct casting roller diameter is lower Casting Roller diameter 0.2-1 times.
3. the nearly end form building mortion of sheet metal according to claim 1, is characterized in that, the roll surface width of described lower Casting Roller is 100-3000mm, the roll surface width 0.2-2mm less of the roll surface width of lower Casting Roller of upper Casting Roller.
4. the nearly end form building mortion of sheet metal according to claim 1, is characterized in that, described lower Casting Roller two ends have flange, and flange height is 5-50mm, and flange width is 10-100mm.
5. the nearly end form building mortion of sheet metal according to claim 1, is characterized in that, the roll surface speed of described lower Casting Roller is 2-200m/min, and the roll surface speed of upper Casting Roller is 0.1-2 times of lower Casting Roller roll surface speed.
6. the nearly end form building mortion of sheet metal according to claim 1, is characterized in that, the roll gap of two Casting Rollers can adjust within the scope of 0.1-10mm.
7. the nearly end form manufacturing process of sheet metal, the nearly end form building mortion of sheet metal that described method adopts one of claim 1-6 described, is characterized in that, said method comprising the steps of:
1) start and adjust the nearly end form building mortion of sheet metal strip;
2) adopt flow distribution device motlten metal to be evenly laid in the upper surface of lower Casting Roller, horizontal linear velocity when wherein motlten metal contacts with lower Casting Roller is 0.5-15 times of lower Casting Roller roll surface speed;
3) along with the rotation of lower Casting Roller, motlten metal forms molten bath between lower Casting Roller and upper Casting Roller;
4) under the acting in conjunction of lower Casting Roller with upper Casting Roller, solidifying and immediately to its rolling, obtaining sheet metal of motlten metal is completed.
8. the nearly end form manufacturing process of sheet metal according to claim 7, is characterized in that, step 4) in rolling reduction be 5-50%.
9. the sheet metal of a nearly end form shaping, it is characterized in that, described sheet metal adopts method according to claim 7 to prepare, its thickness is 0.5-10mm, width is 100 ~ 3000mm, solid-liquid two-phase region temperature range is 1 ~ 100 DEG C, and material comprises carbon steel, stainless steel, silicon steel and other iron and steel and aluminium alloy, magnesium alloy, copper alloy and other non-ferrous metal.
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| CN103464702B true CN103464702B (en) | 2016-01-06 |
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| CN104993094B (en) * | 2015-05-26 | 2017-08-29 | 广东烛光新能源科技有限公司 | The preparation method of metal lithium bands and the metal lithium bands prepared using this method |
| CN108220670B (en) * | 2018-01-11 | 2020-01-21 | 中北大学 | Casting-rolling method and casting-rolling equipment for Cu-Ni-Si-Mg alloy plate strip |
| CN111266542A (en) * | 2020-02-10 | 2020-06-12 | 吉林大学 | Compact light alloy asynchronous cast-rolling forming machine |
| CN114309505B (en) | 2021-12-17 | 2023-01-10 | 北京科技大学 | Metal thin strip continuous casting method adopting momentum flow distribution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069681A (en) * | 1991-08-28 | 1993-03-10 | 上海钢铁研究所 | Thin strip continuous casting device |
| CN1647870A (en) * | 2004-01-20 | 2005-08-03 | 李华伦 | Metal thin plate double roller acynchronous casting and rolling mill |
| CN101811179A (en) * | 2010-04-23 | 2010-08-25 | 山西银光华盛镁业股份有限公司 | Magnesium alloy wide plate casting-rolling method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015049A (en) * | 1983-07-06 | 1985-01-25 | Hitachi Ltd | Continuous casting device |
| JPS63215341A (en) * | 1987-03-03 | 1988-09-07 | Mitsubishi Electric Corp | Device for casting sheet |
| JPH09164454A (en) * | 1995-12-18 | 1997-06-24 | Sumitomo Metal Ind Ltd | Continuous casting equipment of sheet metal |
| JP3517605B2 (en) * | 1999-04-30 | 2004-04-12 | 貢 本村 | Method for rapid cooling and solidification of aluminum casting slag, solidification roll and forming roll used therefor, and apparatus for rapid cooling and solidification of aluminum casting slag |
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2013
- 2013-09-23 CN CN201310436252.4A patent/CN103464702B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069681A (en) * | 1991-08-28 | 1993-03-10 | 上海钢铁研究所 | Thin strip continuous casting device |
| CN1647870A (en) * | 2004-01-20 | 2005-08-03 | 李华伦 | Metal thin plate double roller acynchronous casting and rolling mill |
| CN101811179A (en) * | 2010-04-23 | 2010-08-25 | 山西银光华盛镁业股份有限公司 | Magnesium alloy wide plate casting-rolling method |
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