CN1970181B - Metal sheet hot-rectification processing method - Google Patents
Metal sheet hot-rectification processing method Download PDFInfo
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- CN1970181B CN1970181B CN2006101047960A CN200610104796A CN1970181B CN 1970181 B CN1970181 B CN 1970181B CN 2006101047960 A CN2006101047960 A CN 2006101047960A CN 200610104796 A CN200610104796 A CN 200610104796A CN 1970181 B CN1970181 B CN 1970181B
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Abstract
A metal plate heat rectification treatment method comprises two stages: 1. feeding: stacking plates (1) neatly on the padding plate I (2), with powders evenly spread between two layers to avoid the adhesion of them, evenly setting compression block (3) on the top plate of each stack, putting padding plate II (4) on the compression block (3), evenly stacking heavy loads (5) on the padding plate II (4); 2. heat treatment: sending the hole stack to the heat treatment furnace for heat treatment. Through this method, it can reach unflatness of the board <=0.2-0.5mm, finish product rate over 95%, especially suitable for high intensity metal plate rectification.
Description
Technical field
The present invention relates to a kind of metal sheet hot-rectification processing method.
Background technology
In the sheet metal production process,, usually need leveling to handle because inhomogeneous deformation causes sheet material existence warpage injustice to a certain degree.Generally speaking, existing sheet metal is normal adopts following several method leveling to handle; A kind of is to adopt special-purpose straightener to carry out leveling to handle, but has deficiencies such as the leveling precision is not high, destructible plate surface; Another kind of processing mode is to adopt heating furnace to carry out creep to handle, and can protect plate surface though compare this method of straightener, exist pressing plate yielding, go up the ballast amount greatly, easily inter-adhesive, can not obtain deficiency such as degree of precision.To some high-intensity sheet metals, existing method also exists easy to crack when handling and glacing flatness does not reach deficiencies such as requirement especially.
Summary of the invention
The technical problem that the present invention solves: a kind of metal sheet hot-rectification processing method is provided, and is a kind of high-precision metal sheet material hot-rectification processing method of concentrating the unevenness≤0.2～0.5mm of the whole plate of the strong type acquisition of creep by stress.
Mentality of designing of the present invention: at a certain temperature, by at individual or become on the sheet metal of the warpage injustice stamp, arrange that evenly the intensity circular or other shape of unified height is higher than the little briquetting of pending metal, the principle pressurization that utilizes stress to concentrate is rectified type and is handled.Stamp height, pressurization weight and Technology for Heating Processing by control briquetting size, heap, can obtain the smooth sheet material of high accuracy of the unevenness≤0.2～0.5mm of whole plate, the method is carried out leveling processing yield rate and can be reached more than 95%, and is specially adapted to the strong type of high-intensity sheet metal.
Technical solution of the present invention:
1, charging: in layer fitly be deposited in pending sheet material 1 on the backing plate I2, between every laminate material, evenly spread the powder that prevents plate and plate adhesion on a small quantity, whenever stamp and evenly place briquetting 3 on the uppermost sheet material, on briquetting 3, place backing plate II4 then, on backing plate II4, evenly stack weight 5, heap is stamped height can be definite according to the height of heat-treatment furnace, is advisable to guarantee the effective heating warm area height that is no more than heat-treatment furnace.
2, heat treatment: overall stack stamped send into heat-treatment furnace, according to the characteristic of metal to be treated, can select recrystallization annealing temperature or stress relief annealing temperature to heat-treat, temperature retention time is determined according to what of the characteristic of metal to be treated and batch.
3, the material of selecting for use under heat treatment temperature intensity to be higher than pending metal is manufactured briquetting 3, and briquetting 3 is cylindrical or prismatic, and the height of briquetting 3 is identical, shape is consistent; The ratio of the lower surface area of the area of pending sheet material 1 and briquetting 3 between 50～400, briquetting quantity the more, the unevenness quality of the whole plate after the processing is higher, the concrete quantity of briquetting is: 50～400.
4, the weight of described weight 5 is: pressurization weight m=(0.1～0.3) briquetting lower surface area S
2The maximum yield strength Max σ s of * sheet material.
5, described powder is powdered carbon or alumina powder or zirconia powder, and powder particle size≤50 micron.
6, the heap of whenever stamping is stamped and highly is controlled in 100 layers.
7, described backing plate metal or the nonmetallic materials of selecting for use intensity to be not less than pending metal are manufactured, and carry out surface grinding, and the unevenness on backing plate surface, polishing back should be less than 0.1mm; The backing plate specification is slightly larger than metal to be treated sheet material, and the backing plate length and width are greater than sheet material length and width 20～50mm, and plate thickness is guaranteed not occur bending and deformation under Technology for Heating Processing or rupture.
Technology principle of the present invention: when the sheet material straightening processing is carried out in pressurization under design temperature, the position of the local warpage projection of sheet material, the active force of last ballast will be concentrated on the little briquetting that acts on this place, this place's sheet material is subjected to deforming greater than the applied stress of this temperature lower yield strength, under the regular hour, projection is progressively eliminated; Less warpage projection will stressedly successively begin distortion, finally return to sustained height.
Advantage that the present invention compared with prior art has and effect:
1, the little briquetting that adopts of the present invention is when effectively implementing stress and concentrating, the shortcoming of not only having avoided whole plate briquetting in rectifying the type processing procedure, easily to occur bending and deformation, but also can effectively reduce the weight that goes up ballast, keep the sheet material surface quality.
2, the present invention has avoided the adhesion of plate and plate by evenly spreading powder such as a spot of powdered carbon, alumina powder, zirconia powder between the plate.
3, the present invention can obtain the smooth sheet material of high accuracy of the unevenness≤0.2～0.5mm of whole plate, handles the back yield rate and can reach more than 95%, is specially adapted to high-intensity sheet metal and rectifys type.
Description of drawings
Fig. 1 puts schematic diagram for the present invention becomes to stamp the strong type processing of sheet material.
Fig. 2 Fig. 3 puts schematic diagram for the little briquetting of the present invention.
The specific embodiment
1, briquetting is prepared: be selected in the material (as tungsten, graphite, pottery, refractory material etc.) that intensity under the heat treatment temperature is higher than pending metal, handle by surface grinding, be processed into the little briquetting of unified height, unified shape, difference in height＜0.1mm that it is mutual.Briquetting the more, the unevenness quality that obtains whole plate is higher, the concrete quantity of briquetting is: 50～400.
2, pressurization weight is determined: general pending sheet metal is in the temperature range that Technology for Heating Processing requires, has certain yield strength, according under the area of sheet material and this temperature in length and breadth to maximum yield strength, can calculate the required weight of pressurization, the concrete weight of pressurization is:
Pressurization weight m=(0.1～0.3) briquetting lower surface area S
2The maximum yield strength Max σ s of * sheet material.
3, backing plate is prepared: metal or nonmetallic materials that backing plate selects for use intensity to be higher than pending metal are manufactured, and carry out surface grinding, and the unevenness on backing plate surface, polishing back should be less than 0.1mm; The backing plate specification is slightly larger than metal to be treated sheet material, and the backing plate length and width are greater than sheet material length and width 20～50mm, and plate thickness is guaranteed not occur bending and deformation under system of heat treatment process or rupture.
4, processing method
1. charging: in layer fitly be deposited in pending sheet material 1 on the backing plate I2, it is inter-adhesive when heap is stamped for preventing sheet material, evenly spread powder such as a spot of powdered carbon, alumina powder, zirconia powder between every laminate material, powder particle size≤50 micron are best.Whenever stamp and evenly place briquetting 3 on the uppermost sheet material, placement backing plate II4 on briquetting 3 evenly stacks weight 5 on backing plate II4 then, and heap is stamped height can be definite according to the height of heat-treatment furnace, is advisable to guarantee the effective heating warm area height that is no more than heat-treatment furnace.
2. heat treatment: overall stack stamped send into heat-treatment furnace, according to the characteristic of metal to be treated, can select recrystallization annealing temperature or stress relief annealing temperature to heat-treat, temperature retention time is determined according to what of the characteristic of metal to be treated and batch.
5, embodiment 1
It is the TZM molybdenum alloy cold-reduced sheet of 1.5 * 250 * 300mm that the type of rectifying is handled specification.After process was rolling, the unevenness of sheet material was 1.5～2.0mm, under recrystallization annealing temperature or stress relief annealing temperature, adopts above-mentioned leveling method, can obtain the sheet material of glacing flatness≤0.2～0.3mm, and a leveling yield rate is more than 95%.Concrete technological parameter is as follows:
1. the big smallest number of briquetting: Φ 20 * 10mm/100;
2. heap is stamped height: 75mm;
3. weight: 250kg pressurizes;
4. Technology for Heating Processing: 1250 ℃/5h;
5. plate thickness and material: go up lower bolster and all adopt the TZM molybdenum alloy plate, thickness is 12mm.
6, embodiment 2
It is the TZM molybdenum alloy plate of 0.7 * 250 * 300mm that the type of rectifying is handled specification.Unevenness after rolling is 1.0～1.5mm, by adopting above-mentioned leveling method, can obtain the sheet material of glacing flatness≤0.3mm, and a leveling yield rate is more than 95%.Concrete technological parameter is as follows:
1. the big smallest number of briquetting: Φ 20 * 10mm/100;
2. heap is stamped height: 70mm;
3. weight: 250kg pressurizes;
4. Technology for Heating Processing: 1250 ℃/5h.
5. plate thickness and material: go up lower bolster and all adopt the TZM molybdenum alloy plate, thickness is 12mm.
7, embodiment 3
It is 1.0 * 204 * 362mm or 1.0 * 300 * 500mmTZM molybdenum alloy plate that the type of rectifying is handled specification.Unevenness after rolling is 1.0～1.5mm, by adopting above-mentioned leveling method, can obtain the sheet material of glacing flatness≤0.5mm, and a leveling yield rate is more than 95%.Concrete technological parameter is as follows:
1. the big smallest number of briquetting: Φ 20 * 10mm/120;
2. heap is stamped height: 100mm;
3. weight: 250kg pressurizes;
4. Technology for Heating Processing: 1250 ℃/5h.
5. plate thickness and material: go up lower bolster and all adopt the TZM molybdenum alloy plate, thickness is 12mm.
8, embodiment 4
It is 2.0 * 245 * 340mm hot rolling molybdenum plate that the type of rectifying is handled specification.Rolling back sheet material unevenness is 1.5～2.5mm, by adopting above-mentioned leveling method, can obtain the sheet material of glacing flatness≤0.35mm, and concrete technological parameter is as follows:
1. the big smallest number of briquetting: Φ 20 * 10mm/90;
2. heap is stamped height: 80mm;
3. weight: 150kg pressurizes;
4. Technology for Heating Processing: 950 ℃/3h.
5. plate thickness and material: go up lower bolster and all adopt the TZM molybdenum alloy plate, thickness is 12mm.
9, embodiment 5
It is the cold rolling molybdenum plate of 1.5 * 235 * 245mm that the type of rectifying is handled specification.Rolling back sheet material unevenness is 1.5～2.0mm, and by adopting above-mentioned leveling method, to obtain the sheet material of glacing flatness≤0.20mm, concrete technological parameter is as follows:
1. the big smallest number of briquetting: Φ 20 * 10mm/90;
2. heap is stamped height: 75mm;
3. weight: 150kg pressurizes;
4. Technology for Heating Processing: 850 ℃/3h.
5. plate thickness and material: go up lower bolster and all adopt the TZM molybdenum alloy plate, thickness is 12mm.
Claims (4)
1. metal sheet hot-rectification processing method is characterized in that:
1. charging: pending sheet material (1) in layer fitly is deposited on the backing plate I (2), between every laminate material, evenly spread the powder that prevents plate and plate adhesion on a small quantity, whenever stamp and evenly place briquetting (3) on the uppermost sheet material, go up at briquetting (3) then and place backing plate II (4), go up evenly stacking weight (5) at backing plate II (4), heap is stamped height can be definite according to the height of heat-treatment furnace, is advisable to guarantee the effective heating warm area height that is no more than heat-treatment furnace;
2. the material of selecting for use under heat treatment temperature intensity to be higher than pending metal is manufactured briquetting (3), and briquetting (3) is cylindrical or prismatic, and the height of briquetting (3) is identical, shape is consistent, mutual difference in height＜0.1mm; The ratio of the lower surface area of the area of pending sheet material (1) and briquetting (3) between 50～400, briquetting quantity the more, the unevenness quality of the whole plate after the processing is higher, the concrete quantity of briquetting is: 50～400;
3. the weight of weight (5) is: pressurization weight m=(0.1～0.3) briquetting lower surface area S
2The maximum yield strength Max σ s of * sheet material;
4. heat treatment: overall stack stamped send into heat-treatment furnace, according to the characteristic of metal to be treated, can select recrystallization annealing temperature or stress relief annealing temperature to heat-treat, temperature retention time is determined according to what of the characteristic of metal to be treated and batch.
2. a kind of metal sheet hot-rectification processing method according to claim 1 is characterized in that: described powder is powdered carbon or alumina powder or zirconia powder, and powder particle size≤50 micron.
3. a kind of metal sheet hot-rectification processing method according to claim 1 is characterized in that: whenever stamp the height of stacking pending sheet material (1) and be controlled in 100 layers.
4. a kind of metal sheet hot-rectification processing method according to claim 1, it is characterized in that: metal or nonmetallic materials that backing plate I (2) and backing plate II (4) select for use intensity to be higher than pending metal are manufactured, and carry out surface grinding, the unevenness on backing plate surface, polishing back should be less than 0.1mm; The backing plate specification is slightly larger than metal to be treated sheet material, and the backing plate length and width are greater than sheet material length and width 20～50mm, and plate thickness is guaranteed not occur bending and deformation under Technology for Heating Processing or rupture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2006101047960A CN1970181B (en) | 2007-01-19 | 2007-01-19 | Metal sheet hot-rectification processing method |
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| CN2006101047960A CN1970181B (en) | 2007-01-19 | 2007-01-19 | Metal sheet hot-rectification processing method |
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| CN1970181A CN1970181A (en) | 2007-05-30 |
| CN1970181B true CN1970181B (en) | 2011-05-18 |
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| CN101898205B (en) * | 2010-03-11 | 2012-03-28 | 常州苏晶电子材料有限公司 | Method for levelling metal plate with stress deformation by utilizing vacuum annealing |
| CN102418059B (en) * | 2011-12-12 | 2012-12-05 | 西部钛业有限责任公司 | Straightening annealing method for titanium and titanium alloy plates |
| CN102861788B (en) * | 2012-10-18 | 2015-01-07 | 西部钛业有限责任公司 | Hot shaping method of large-specification titanium plate |
| CN103031427A (en) * | 2012-11-14 | 2013-04-10 | 云南钛业股份有限公司 | Stacking type cover annealing method for titanium and titanium alloy plate |
| CN102974660B (en) * | 2012-12-05 | 2015-05-27 | 南京钢铁股份有限公司 | Thick steel plate planishing technology |
| CN103341527A (en) * | 2013-05-22 | 2013-10-09 | 宝鸡力兴钛业科技有限公司 | Device and method for reshaping titanium plates easily and conveniently |
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| CN104841727A (en) * | 2015-05-29 | 2015-08-19 | 宝鸡钛业股份有限公司 | Vacuum creep shape righting method for titanium and titanium alloy panels |
| US9968977B2 (en) * | 2015-07-06 | 2018-05-15 | GM Global Technology Operations LLC | Method of shaping a component |
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| CN110355520B (en) * | 2019-08-27 | 2021-08-10 | 宁波江丰电子材料股份有限公司 | Briquetting placing device and briquetting placing method |
| CN110624980B (en) * | 2019-09-16 | 2021-02-23 | 洛阳双瑞精铸钛业有限公司 | Vacuum hot-pressing shape-righting process for titanium sheet |
| CN110639976B (en) * | 2019-09-27 | 2021-08-13 | 攀钢集团攀枝花钛材有限公司江油分公司 | Solid solution straightening method for titanium alloy plate |
| CN111975374B (en) * | 2020-08-07 | 2022-02-01 | 芜湖通潮精密机械股份有限公司 | Shaping device for heating machine base and flatness shaping treatment process for heating machine base |
| CN111961932A (en) * | 2020-08-18 | 2020-11-20 | 广西南南铝加工有限公司 | Preparation method of ultra-flat aluminum alloy medium plate |
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