CN101898200B - Direct rolling method of zinc ingots - Google Patents
Direct rolling method of zinc ingots Download PDFInfo
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- CN101898200B CN101898200B CN2009102630724A CN200910263072A CN101898200B CN 101898200 B CN101898200 B CN 101898200B CN 2009102630724 A CN2009102630724 A CN 2009102630724A CN 200910263072 A CN200910263072 A CN 200910263072A CN 101898200 B CN101898200 B CN 101898200B
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Abstract
The invention provides a direct rolling method of zinc ingots, belonging to the technical field of metal material moulding and processing. The method comprises the following steps: firstly carrying out electro-plating processing and spraying dezincification liquid on the polished roller surface; taking zinc ingots produced by a smelting plant as raw materials, cleaning and drying the surfaces of the zinc ingots and then heating the zinc ingots in an electric heating furnace; to ensure good rolled plate shapes and improve yield, carrying out 'roller roasting' before rolling the first zinc ingot; transporting the heated zinc ingots to a hot rolling mill for multi-pass cyclic rolling in batch and distributing the rolling passes and the pass screw-down rate according to the sizes of the zinc ingots and the finished products; and naturally cooling the hot rolled zinc plates to room temperature, then longitudinally cutting, transversely cutting and shearing the hot rolled zinc plates into plates to the finished size and finally testing, labeling, packaging and warehousing the hot rolled zinc plates. The method of the invention has the characteristics of short process, low comprehensive energy consumption, low production cost, high production efficiency and high cost performance.
Description
Technical field:
The invention belongs to metal material moulding and processing technique field, be specifically related to a kind of zinc ingot metal (former ingot) that utilizes the zinc smeltery to produce and carry out directly rolling method of zinc ingot metal.
Background technology:
Zinc impregnation character is active, has goodish corrosion resistance, mechanical performance and good mouldability.In metal consumption, zinc is only second to steel, aluminium, copper, manganese, comes the 5th.The consumer field of zinc is zinc-plated, brass and bronze, zinc-containing alloy and chemical products successively, and zine plate mainly is used in building industry and light industry.
The former ingot size of zinc is little, and tissue looseness is the needs of the casting demoulding, and the surface forms and runs through vertical, the transversal line wide 60mm that distributes above that, reaches the groove of 12mm deeply, and therefore easy of crack, folding and roll banding should not directly be rolled processing when rolling.Traditional zine plate production technology is the zinc ingot metal (also claiming former ingot) that the smeltery is produced, and passes through melting, casts the bigger base of specification,, heats then and roll forming to eliminate surface groove through surface treatment; The zinc-plated enterprise of part carries out melting with the former ingot of zinc, pours into the thick strand of 15-30mm then and supplies zinc-plated use.Traditional zine plate production technology is seen Figure of description 2.
Because traditional zine plate production technology has melting, strand operation, energy consumption is high, and heat waste is big, and production efficiency is low.Though supply the casting technology flow process of zinc-plated usefulness not long, but still the melting operation need be arranged, the consumption of zinc-plated factory is little in addition; Smelting equipment is simpler and cruder; Zinc consume during melting is lost (melting loss) and can be reached 2-3%, with 20,000 yuan of/ton plans of present zinc valency, amounts to RMB and will lose 400-600 unit/ton.Desirable method is directly to adopt the former ingot of zinc of smeltery's production as rolling raw material, saves the operation of using the melting again of the former ingot warp of zinc in traditional zine plate rolling mill practice, being cast as rolling former material base, carries out directly rolling.Utilize on the one hand pure Zinc material favorable mechanical performance and crystal property again, reduce energy consumption and melting loss on the other hand, reduce production costs.Therefore the exploitation of zinc ingot metal Direct Rolling Technology has very great real world applications meaning and economic benefit.
Summary of the invention:
The object of the invention is to overcome the technical problem that exists in the existing zine plate milling method, and a kind of direct rolling method of zinc ingots is provided, and this method particular content is following:
(1) at first the roller surface that polishes is carried out electroplating processes and sprays dezincification liquid, strengthen the wear-resisting and fineness of roll, prevent that roll from gluing zinc.
(2) zinc ingot metal (former ingot) that adopts the smeltery to produce is a raw material, the zinc ingot metal that is up to the standards is organized criticized, and through sending electric furnace to heat after the surface clean drying, heating-up temperature is 280 ℃-350 ℃, and homogeneous heating is incubated 60 minutes.
(3) for guaranteeing that milled sheet shape is good and improve lumber recovery, before rolling first zinc ingot metal, should carry out " scalding roller ", " scald the temperature of hot-rolling mill roll barrel " to 120 ℃-180 ℃, confirm the scope of roller temperature according to different rolling sequences and actual plate shape.
(4) zinc ingot metal that heats being transported to hot-rolling mill, to carry out the multi-pass batch cycle rolling, and rolling temperature is distributed rolling pass and percentage pass reduction according to the size of ingot blank and finished product in 180 ℃ of-250 ℃ of scopes; Consider the groove of strand, thickness deviation is big, and is cast sturcture; The reduction ratio of first passage≤15%; The pony-roughing pass reduction ratio is considered plate shape, thickness deviation and the performance of production board at 25-30%, and the reduction ratio of final pass is controlled at 15-20%.
(5) the hot rolling zine plate carries out rip cutting, crosscut after naturally cooling to room temperature, the zine plate that is trimmed to finished size puts in storage through check, sign, packing back.
Figure of description 1 is seen in technological process of the present invention.
Raw material prepares to comprise the preparation of zinc ingot metal and the cleaning on zinc ingot metal surface.Because the zinc ingot metal surface is fluted, in carrying and storage process, possibly be stained with greasy dirt and dust, for improving surface quality of products, before heating rolling, need to increase the surface clean operation.For preventing that roll from gluing zinc, breaker roll carries out surface treatment and sprays dezincification liquid.According to the size and the production capacity of zinc ingot metal and finished product zine plate, select heating furnace and pattern, specification and the production capacity of hot-rolling mill and the heating-up temperature scope of heating furnace.Because the distortion heat when zinc is rolling is bigger, adopts the rolling mode of batch cycle to be out of shape thermogenetic temperature rise during hot rolling, and should control the gentle rolling temperature of roller of each rolling sequence to reduce.Finishing procedure comprises and carries out rip cutting, crosscut with rolling the back zine plate after being cooled to room temperature, is trimmed to finished size and after check, sign, packing back warehouse-in.The technological requirement of finishing procedure and subsequent handling thereof is identical with traditional handicraft.
Special meaning of the present invention is melting and a strand operation of having saved traditional zine plate rolling mill practice, and heating process is saved more than 50% than the energy consumption of melting operation, and production efficiency improves greatly, and the metal consumption (melting loss is 2%-3%) when having stopped melting.Compare with the rolling zine plate production technology of tradition, the present invention has following outstanding advantage: 1. flow process is short, and process equipment is simple, invests less; 2. need not melting, strand equipment, comprehensive energy consumption is low, and metal consumption is little, and working condition is good; 3. with short production cycle, capital turnover is fast; 4. production cost is low, and production efficiency is high, and product quality is better than strand, and cost performance is high, and product market competitiveness is strong; 5. good in economic efficiency, the unit product new profit >=400 yuan/ton, the investment payback time is short.
Description of drawings:
Fig. 1: process chart of the present invention.
Fig. 2: traditional zine plate technological process of production figure.
The specific embodiment:
Roll preceding preparation: selecting 33 qualified purity for use is 99.9% the former ingot of zinc, and every thickness is 50 millimeters, and width is 200mm, and length is 400mm; That its upper surface runs through is vertical, transversal line distributes wide 60mm, reaches the groove of 12mm deeply.The every former ingot of zinc is carried out surface clean, after visual inspection, drying, be divided into 3 groups and stack successively.Adopt the single chassis reciprocation cycle rolling, breaker roll carries out surface treatment, and it is wear-resisting and prevent sticking zinc when rolling to strengthen roll.
Embodiment 1: at first dezincification liquid is sprayed on the breaker roll surface, selects the 1st group 11 for use through compiling 1-2-3-... The former ingot of-No. 11 zinc is heated to 320 ℃ and be incubated 60 minutes in heating furnace.Once take out and be deposited in order on the milling train front platform with getting the ingot machine.Carry out " scalding roller " with first zinc ingot metal, " scald the temperature of roll barrel " to 150 ℃, be rolled then.Start rolling temperature is 250 ℃, by numbering 1-2-3-...-11 carry out the rolling of first passage successively, and reduction ratio is 10%; It is rolling to carry out second passage by numbering circulation equally, and reduction ratio is 26.7%; The rolling circulation of the 3rd passage is rolling, and reduction ratio is that the circulation of 27.3%, the four-pass is rolling, and finish to gauge system temperature is 240 ℃; Reduction ratio is 16.7%, and after four-pass was rolling, obtaining thickness was 20mm, and width is 200mm; Length 760mm, surface-brightening, template is good; Lateral thickness difference ± 0.5 μ m, purity is 99.9%, σ
sThe zinc-plated hot rolling zine plate of using of＞80MPa carries out rip cutting, crosscut, is trimmed to finished size after naturally cooling to room temperature, warehouse-in after check, sign, packing.
Embodiment 2: at first dezincification liquid is sprayed on the breaker roll surface, selects the 2nd group 11 then for use through compiling 1-2-3-... The former ingot of-No. 11 zinc is heated to 300 ℃ and be incubated 60 minutes in heating furnace.Once take out and be deposited in order on the milling train front platform with getting the ingot machine.Carry out " scalding roller " with first zinc ingot metal, " scald the temperature of roll barrel " to 130 ℃, be rolled then.Start rolling temperature is 230 ℃, by numbering 1-2-3-...-11 carry out the rolling of first passage successively, and reduction ratio is 10%; It is rolling to carry out second passage by numbering circulation equally, and reduction ratio is 26.7%; The rolling circulation of the 3rd passage is rolling, and reduction ratio is 27.3%; The four-pass circulation is rolling, and reduction ratio is 25%; The circulation of the 5th passage is rolling, and finish to gauge system temperature is 220 ℃, and reduction ratio is 16.7%, and after five passages were rolling, obtaining thickness was 15mm, and width is 200mm, length 1000mm, and surface-brightening, template is good, lateral thickness difference ± 0.5 μ m, purity is 99.9%, σ
sThe hot rolling zine plate of＞80MPa carries out rip cutting, crosscut, is trimmed to finished size after naturally cooling to room temperature, warehouse-in after check, sign, packing.
Embodiment 3: at first dezincification liquid is sprayed on the breaker roll surface, selects the 3rd group 11 then for use through compiling 1-2-3-... The former ingot of-No. 11 zinc is heated to 280 ℃ and be incubated 60 minutes in heating furnace.Once take out and be deposited in order on the milling train front platform with getting the ingot machine.Carry out " scalding roller " with first zinc ingot metal, " scald the temperature of roll barrel " to 120 ℃, be rolled then.Start rolling temperature is 180 ℃, by numbering 1-2-3-...-11 carry out the rolling of first passage successively, and reduction ratio is 15%; It is rolling to carry out second passage by numbering circulation equally, and reduction ratio is 25.9%; The circulation of the 3rd passage is rolling, and reduction ratio is 30.2%; The four-pass circulation is rolling, and reduction ratio is 29.5%; The circulation of the 5th passage is rolling, and reduction ratio is that the circulation of 25.8%, the six passage is rolling, 180 ℃ of finish to gauge system temperature; Reduction ratio is 15%, and after six passages were rolling, obtaining thickness was 10mm, and width is 200mm; Length 1500mm, surface-brightening, template is good; Lateral thickness difference ± 0.5 μ m, purity is 99.9%, σ
sThe hot rolling zine plate of＞80MPa carries out rip cutting, crosscut, is trimmed to finished size after naturally cooling to room temperature, warehouse-in after check, sign, packing.
Claims (1)
1. direct rolling method of zinc ingots, this method particular content is following:
(1) at first the roller surface that polishes is carried out electroplating processes and sprays dezincification liquid, strengthen the wear-resisting and fineness of roll, prevent that roll from gluing zinc;
(2) zinc ingot metal that adopts the smeltery to produce is a raw material, the zinc ingot metal that is up to the standards is organized criticized, and through sending electric furnace to heat after the surface clean drying, heating-up temperature is 280 ℃-350 ℃, and homogeneous heating is incubated 60 minutes;
(3) for guaranteeing that milled sheet shape is good and improve lumber recovery, before rolling first zinc ingot metal, should carry out " scalding roller ", " scald the temperature of hot-rolling mill roll barrel " to 120 ℃-180 ℃, confirm the scope of roller temperature according to different rolling sequences and actual plate shape;
(4) zinc ingot metal that heats being transported to hot-rolling mill, to carry out the multi-pass batch cycle rolling, and rolling temperature is distributed rolling pass and percentage pass reduction according to the size of ingot blank and finished product in 180 ℃ of-250 ℃ of scopes; Consider the groove of strand, thickness deviation is big, and is cast sturcture; The reduction ratio of first passage≤15%; The pony-roughing pass reduction ratio is considered plate shape, thickness deviation and the performance of production board at 25-30%, and the reduction ratio of final pass is controlled at 15-20%;
(5) the hot rolling zine plate carries out rip cutting, crosscut after naturally cooling to room temperature, the zine plate that is trimmed to finished size puts in storage through check, sign, packing back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102630724A CN101898200B (en) | 2009-12-16 | 2009-12-16 | Direct rolling method of zinc ingots |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102630724A CN101898200B (en) | 2009-12-16 | 2009-12-16 | Direct rolling method of zinc ingots |
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| CN101898200A CN101898200A (en) | 2010-12-01 |
| CN101898200B true CN101898200B (en) | 2012-11-14 |
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| CN104384184A (en) * | 2014-12-04 | 2015-03-04 | 贵州省过程工业技术研究中心 | One-step lead anode plate shearing and forming machining method and device for wet electrolytic |
| CN108262366B (en) * | 2018-01-23 | 2020-04-28 | 内蒙古工业大学 | Production process of zinc plate |
| CN112349873B (en) * | 2020-11-05 | 2021-09-24 | 中南大学 | Method for improving cycling stability of zinc cathode of water-based zinc ion battery and application of method |
| CN112658030A (en) * | 2020-12-03 | 2021-04-16 | 南京钢铁股份有限公司 | Rolling method of wide and thin high-nickel-molybdenum austenitic stainless steel plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473949A (en) * | 2003-07-29 | 2004-02-11 | 沈健生 | Aluminium alloy foil and its producing method |
| CN101202168A (en) * | 2007-10-23 | 2008-06-18 | 福达合金材料股份有限公司 | Technique for preparation of novel silver zinc oxide contact material |
| WO2009095264A1 (en) * | 2008-01-30 | 2009-08-06 | Corus Staal Bv | Method of producing a hot-rolled twip-steel and a twip-steel product produced thereby |
| CN101593835A (en) * | 2009-06-26 | 2009-12-02 | 程竹琴 | Mercury-free battery zinc powder and manufacturing method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473949A (en) * | 2003-07-29 | 2004-02-11 | 沈健生 | Aluminium alloy foil and its producing method |
| CN101202168A (en) * | 2007-10-23 | 2008-06-18 | 福达合金材料股份有限公司 | Technique for preparation of novel silver zinc oxide contact material |
| WO2009095264A1 (en) * | 2008-01-30 | 2009-08-06 | Corus Staal Bv | Method of producing a hot-rolled twip-steel and a twip-steel product produced thereby |
| CN101593835A (en) * | 2009-06-26 | 2009-12-02 | 程竹琴 | Mercury-free battery zinc powder and manufacturing method thereof |
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Granted publication date: 20121114 Termination date: 20181216 |