CN102794300A - Production method of 304 stainless steel and pure-copper cold compound coiled material - Google Patents
Production method of 304 stainless steel and pure-copper cold compound coiled material Download PDFInfo
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Abstract
The invention relates to a production method of a 304 stainless steel and a pure-copper cold compound coiled material. The production method comprises the following process steps of: (1) preparing raw materials: carrying out surface oil-removing and decontaminating treatment on 304 coldly-rolling stainless steel and a pure-copper coiled material; (2) carrying out compound rolling: conveying the 304 coldly-rolling stainless steel and a copper metal material into a compound rolling machine to carry out synchronous room-temperature continuous compound rolling; (3) dispreading and annealing: carrying out the dispreading and annealing on a rolled stainless steel copper compound coiled material on an alloy layer; (4) flattening the stainless steel copper compound coiled material which is dispread and annealed; (5) carrying out bending and strengthening treatment on the flattened stainless steel copper compound coiled material; and (6) carrying out cutlengthing and splitting on the stainless steel copper compound coiled material to form a 304 stainless steel and copper cold compound material. The production method disclosed by the invention has a simple manufacturing process and low production cost; and the corrosion resistance of the steel-copper compound coiled material is strong and no rusts are formed on the end surfaced of the steel-copper compound coiled material, so that the requirements of a plurality of indoor and outdoor decorative materials are met.
Description
Technical field
The present invention relates to the production method of a kind of 304 stainless steels and the cold composite sheet material of fine copper, belong to stainless steel and carbon/carbon-copper composite material technical field.
Background technology
304 stainless steels are a kind of common general stainless steels, also are called 18/8 stainless steel in the industry, have good stainless decay resistance and anti intercrystalline corrosion performance preferably.Rustless property is eager to excel than the stainless steel material of 200 series.High temperature resistant aspect is also relatively good, and the general serviceability temperature limit is less than 650 ℃.Corrosion resistance is better than 430 stainless steels, but price is more cheap than 316 stainless steels again, is applicable in the life, is the food-grade stainless steel of authorized by state, is suitable for processing, storage and the transportation of food; Have good processing properties and solderability, be applicable to plate type heat exchanger, bellows, household supplies, building materials, chemistry, food industry etc.
Fine copper is aubergine, claims red copper again.Fine copper density is 8.96g/cm
3, fusing point is 1083 ℃, has good electric conductivity, thermal conductivity, ductility and corrosion resistance.Be mainly used in the heat conduction equipment such as flat plate collector of electrotechnical apparatus such as making generator, bus, cable, switching device, transformer and heat exchanger, pipeline, solar heat collector.
The common ply-metal mode of production is broadly divided into: blast composite algorithm, hot rolling system composite algorithm and cold rolling composite algorithm etc.The compound high-voltage pulse load that produces when utilizing explosive charge of exploding realizes the metallurgical binding of foreign material; Often be applicable to and produce the compound spiral-plate of single face; Product thickness also is restricted; It is done the energy with explosive and has produced the sound and shock wave hugely, and environment around giving and people bring and pollute and stimulation.The oxidation at hot rolling is compound will prevent to heat time interface, need carry out vacuum or weld airtight, complex process, product thickness and bed thickness ratio are difficult to control, generally are suitable for blank production.Begin cold rolling composite algorithm the 1950's and begun to be used for the commercial production coiled composite, can single, double compound, size be accurate, and efficient is high, but bond strength is low and unstable, and composite facing steel layer is prone to get rusty.In sum, with traditional ply-metal mode of production, the copper steel composite sheet material of producing exists technology dumb in continuous flow procedure, and end face steel layer is prone to get rusty, the unequal problem of composite bed thickness, has satisfied not existing market client's demand.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the conventional composite technology; Thereby the production method of a kind of 304 stainless steels and the cold composite sheet material of fine copper is provided, and this method production efficiency is high, and cost is low; Dimensional accuracy is high; Product stability is good, and problems such as surface oxidation, the end face that can improve composite effectively is prone to get rusty, composite bed inhomogeneities are met the need of market.
According to technical scheme provided by the invention, the production method of a kind of 304 stainless steels and the cold composite sheet material of fine copper, adopt following processing step:
(1), raw-material surface treatment:
Raw material: substrate is selected 304 cold-rolling stainless steel coiled materials for use, and composite bed is selected the copper coiled material for use, and the compound ratio of material is 10～20%; With the cleaning and degreasing method 304 cold-rolling stainless steel coiled materials, fine copper coiled material are carried out surface deoiling and handle, the molten employing of degreasing mass concentration is 12%～18% NaOH solution, and temperature is controlled at 60 ℃～80 ℃; Degreasing time is as the criterion 90～110 ℃ of bake out temperatures with strip surface light, no greasy dirt
(2), composite rolling:
(a), the width of 304 cold-rolling stainless steel coiled materials is 500～650mm; Thickness is 0.5～2.5mm; 304 cold-rolling stainless steel coiled materials are carried out the surface texturing polishing in Sanding Area, require 304 cold-rolling stainless steel coiled material overall with uniform grindings, grinding depth is 0.05～0.10mm;
(b), the fine copper coiled material carried out single face carefully brush, remove surface film oxide, copper coiled material thickness is 0.2mm～0.5mm, width is 500～650mm;
(c), above-mentioned 304 cold-rolling stainless steel coiled materials and two kinds of metal materials of fine copper coiled material of handling well through polishing are sent on the composite rolling mill; Carrying out synchronous normal-temperature continuous composite rolling is stainless steel copper composite sheet material; 304 cold-rolling stainless steel coiled material tension force are set at 4000～5000Kg; Copper coiled material tension force is set at 200 ~ 400Kg, and compound backward pull is set at 6000～8000Kg, and composite rolling mill speed is 10～20 meters/minute;
(3), diffusion annealing: the stainless steel copper composite sheet material through after rolling carries out the diffusion annealing of alloy-layer, and annealing way adopts the bell-type slow cooling, and furnace atmosphere is the ammonia decomposition gas; Promptly 75% hydrogen+25% nitrogen is assurance copper and stainless diffusion annealing, and stainless steel copper composite sheet material annealing temperature is 1050 ℃～1150 ℃; Temperature retention time is slowly cooling after 2～3 hours; 850 ~ 500 ℃ should be quickly cooled to 350 ℃ in the sensitized zone, separate out to avoid carbide, slowly cool to 75～85 ℃ at last and come out of the stove; Tensile strength reaches 380MPa～480MPa, and percentage elongation is greater than 15%;
(4), will under planisher, carry out smoothly through the stainless steel copper composite sheet material after the diffusion annealing, temper pressure is 100～200 tons, smooth speed is 20～50 meters/minute;
(5), above-mentioned stainless steel copper composite sheet material after smooth carried out stretch-bending straightening handle, speed is 20～50 meters/minute, elongation control is in 5%; Guarantee surface smoothness greater than 7 grades, smooth amount is less than 5%;
(6) the stainless steel copper composite sheet material behind the above-mentioned stretch-bending straightening being carried out the scale itemize according to customer requirement is 304 stainless steels and the cold composite of copper, and minimum itemize width is 20mm, and width tolerance is ± 0.10, and itemize speed is 12～18 meters/minute.
Stainless steel copper composite sheet material composite thickness is controlled at 0.8～1.0mm in the said composite rolling step (2), and the rolling deformation rate is 70～80%.
In the said composite rolling step (2), 304 cold-rolling stainless steel coiled materials, two kinds of metal materials of fine copper coiled material are not heat-treated, and carry out bilayer or three layers of rolling compound stainless steel copper composite sheet material that is as requested.
Substrate is 304 cold-rolling stainless steel coiled materials in the said double-layer stainless steel copper composite sheet material, and composite bed is a T2 fine copper coiled material, and it is 10～20% that composite bed accounts for the composite weight ratio.
In said three layers of stainless steel copper composite sheet material, substrate is 304 cold-rolling stainless steel coiled materials, and composite bed is two-layer T2 fine copper coiled material, and it is 10～20% that composite bed accounts for the composite weight ratio.
Manufacturing process of the present invention is simple, the raw material convenient sources, and production cost is low, can remedy the defective of existing market composite effectively, and stainless steel copper composite sheet material corrosion resistance is strong, and end face does not have and gets rusty, and can satisfy the demand of a lot of indoor and outdoor ornament materials.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
The raw material that adopt in embodiments of the present invention are market and purchase, and the equipment of employing is the pair rolling unit, comprises that cleaning and degreasing machine, composite rolling mill, bell-jar annealing furnace, planisher, straightener etc. are linked to be unit.
Embodiment one: the production method of a kind of 304 stainless steels of the present invention and the cold composite sheet material of fine copper, adopt following processing step:
The raw material substrate is selected 304 cold-rolling stainless steel coiled materials for use, and its width is 620 ㎜, and thickness is 2.0 ㎜; T2 fine copper coiled material, its width are 620mm, and thickness is 0.2mm; 304 cold-rolling stainless steel coiled material weight are 5000Kg, and individual layer fine copper coil weight is 500Kg; Degreasing time is as the criterion with strip surface light, no greasy dirt;
1, getting 304 cold-rolling stainless steel coiled materials and T2 fine copper coiled material is placed on and carries out chemical degreasing on the cleaning and degreasing unit and handle; Put into the degreasant solution that the degreasing agent of 1000 kilograms water and 120 kg is processed in the solution tank; Degreasant solution employing mass concentration is 12% NaOH solution, and temperature is controlled at 70 ℃; Degreasing time is as the criterion with strip surface light, no greasy dirt; Degreasing time is: 80 meters/minute; Bake out temperature is 90 ℃;
2, above-mentioned T2 fine copper coiled material, 304 cold-rolling stainless steel coiled materials and the T2 fine copper coiled material of handling through chemical degreasing is placed on three uncoilers in upper, middle and lower respectively; Three-layer metal carries out surface finish simultaneously to be handled; The sander rotating speed is 1600 rev/mins; With composite surface polishing fully and grinding depth suitable, the stainless steel grinding depth is 0.07mm, the copper strips grinding depth is 0.02mm;
3, above-mentioned T2 fine copper coiled material, 304 cold-rolling stainless steel coiled materials and three kinds of metal materials of T2 fine copper coiled material of handling well through polishing are sent on the composite rolling mill; 304 cold-rolling stainless steel coiled material tension force are set at 5000Kg; Copper coiled material tension force is set at 200Kg, and compound backward pull is set at 6000Kg, and composite rolling mill speed is 18 meters/minute; Compound back THICKNESS CONTROL 0.8mm, the rolling deformation rate is 80%;
4, above-mentioned compound good copper/stainless steel/copper composite sheet material is carried out diffusion annealing, make it combine fastness to strengthen, reach not stratified effect.Adopt the bell jar furnace annealing, protective gas is the mist (i.e. 75% hydrogen+25% nitrogen) that ammonia decomposes in the stove, and protective money metal surface light is not oxidized, and surface film oxide is carried out high hydrogen reduction, and throughput is controlled to be 15m
3/ hour, mode of heating adopts the natural gas heating, and the diffusion annealing temperature is 1100 ℃, and temperature retention time is 2.5 hours, reaches molecular diffusion between stainless steel and the copper, makes its faying face form alloy-layer.850-500 ℃ should be quickly cooled to 350 ℃ in the sensitized zone, separates out to avoid carbide, slowly cools to 80 ℃ at last and comes out of the stove, and tensile strength reaches about 400MPa, and percentage elongation is greater than 15%;
5, it is smooth the stainless steel copper composite sheet material after the above-mentioned diffusion annealing to be carried out planisher, eliminates material yield platform impression, guarantees surface smoothness greater than 7 grades, and smooth amount is less than 5%, and smooth power is 100 tons, and speed is 20 meters/minute;
6, above-mentioned stainless steel copper composite sheet material after smooth is carried out stretch-bending straightening and handle, speed is 40 meters/minute, and elongation control is in 5%;
7, the composite sheet material behind the above-mentioned stretch-bending straightening being carried out the scale itemize according to customer requirement is 304 stainless steels and the cold composite of copper, and minimum itemize width is 20mm, and width tolerance is ± 0.10, and itemize speed is 15 meters/minute.
Embodiment two: the production method of a kind of 304 stainless steels of the present invention and the cold composite sheet material of fine copper, adopt following processing step,
Substrate is selected 304 cold-rolling stainless steel coiled materials for use, and its width is 580 ㎜, and thickness is 2.0 ㎜; Composite bed is selected T2 fine copper coiled material for use, and its width is 580mm, and thickness is 0.2mm; Stainless-steel roll weight is 5000Kg, and individual layer copper volume weight is 500Kg;
1, getting 304 cold-rolling stainless steel coiled materials and T2 fine copper coiled material is placed on and carries out chemical degreasing on the cleaning and degreasing unit and handle; Put into the degreasant solution that the degreasing agent of 1000 kilograms water and 150 kilograms is processed in the solution tank; The molten employing of degreasing mass concentration is 15% NaOH solution, and temperature is controlled at 80 ℃; Degreasing time is as the criterion with strip surface light, no greasy dirt; Degreasing time is: 80 meters/minute; Bake out temperature is 90 ℃;
2, with above-mentioned 304 cold-rolling stainless steel coiled materials and the T2 fine copper coiled material of handling through chemical degreasing be placed on respectively, in two uncoilers; Double layer of metal is carried out surface finish simultaneously and is handled; The sander rotating speed is 1600 rev/mins; With composite surface polishing fully and grinding depth suitable, the stainless steel grinding depth is 0.07mm, the copper strips grinding depth is 0.02mm;
3, above-mentioned 304 cold-rolling stainless steel coiled materials and two kinds of metals of T2 fine copper coiled material of handling well through polishing are sent on the composite rolling mill; Stainless steel band tension force is set at 4500Kg; Copper volume tension force is set at 150Kg, and compound backward pull is set at 6000Kg, and composite rolling mill speed is 15 meters/minute; Compound back THICKNESS CONTROL 0.9mm, the rolling deformation rate is 75%;
4, above-mentioned compound good stainless steel copper composite sheet material is carried out two kinds of intermetallic diffusion annealings, make it combine fastness to strengthen, reach not stratified effect.Adopt the bell jar furnace annealing, protective gas is the mist (i.e. 75% hydrogen+25% nitrogen) that ammonia decomposes in the stove, and protective money metal surface light is not oxidized, and surface film oxide is carried out high hydrogen reduction, and throughput is controlled to be 15m
3/ hour, mode of heating adopts the natural gas heating, and the diffusion annealing temperature is 1050 ℃, and temperature retention time is 2 hours, reaches molecular diffusion between stainless steel and the copper, makes its faying face form alloy-layer; 850-500 ℃ should be quickly cooled to 350 ℃ in the sensitized zone, avoids carbide to separate out, last furnace cooling, and temperature is to come out of the stove below 80 ℃ in the stove; Tensile strength reaches 420MPa, and percentage elongation is greater than 15%;
5, it is smooth the stainless steel copper composite sheet material after the above-mentioned diffusion annealing to be carried out planisher, eliminates material yield platform impression, guarantees surface smoothness greater than 7 grades, and smooth amount is less than 5%, and smooth power is 150 tons, and speed is 20 meters/minute;
6, above-mentioned stainless steel copper composite sheet material after smooth is carried out stretch-bending straightening and handle, speed is 30 meters/minute, and elongation control is in 5%;
7, the stainless steel copper composite sheet material behind the above-mentioned stretch-bending straightening being carried out the scale itemize according to customer requirement is 304 stainless steels and the cold composite of copper, and minimum itemize width is 20mm, and width tolerance is ± 0.10, and itemize speed is 15 meters/minute.
Embodiment three: the production method of a kind of 304 stainless steels of the present invention and the cold composite sheet material of copper, adopt following processing step:
Substrate is selected 304 cold-rolling stainless steel coiled materials for use, and its width is 550 ㎜, and thickness is 2.0 ㎜; Composite bed is selected T2 fine copper coiled material for use, and its width is 550mm, and thickness is 0.2mm; Stainless-steel roll weight is 5000Kg, and individual layer copper volume weight is 500Kg;
1, getting 304 cold-rolling stainless steel coiled materials and T2 fine copper coiled material is placed on and carries out chemical degreasing on the cleaning and degreasing unit and handle; Put into the degreasing agent solution that the degreasing agent of 1000 kilograms water and 180 kilograms is processed in the solution tank; The molten employing of degreasing mass concentration is 18% NaOH solution, and temperature is controlled at 70 ℃; Degreasing time is as the criterion with strip surface light, no greasy dirt; Degreasing time is: 10 seconds; Bake out temperature is 90 ℃;
2, above-mentioned T2 fine copper coiled material, cold-rolling stainless steel coiled material and the T2 fine copper coiled material of handling through chemical degreasing is placed on respectively on the different uncoilers in upper, middle and lower; Three-layer metal carries out surface finish simultaneously to be handled; The sander rotating speed is 1600 rev/mins; With composite surface polishing fully and grinding depth suitable, the stainless steel grinding depth is 0.07mm, the copper strips grinding depth is 0.02mm;
3, above-mentioned T2 fine copper coiled material, cold-rolling stainless steel coiled material and the T2 fine copper coiled material three-layer metal of handling well through polishing sent on the composite rolling mill; Stainless steel coiled material tension force is set at 4000Kg; Copper coiled material tension force is set at 300Kg, and compound backward pull is set at 7000Kg, and composite rolling mill speed is 20 meters/minute; Compound back THICKNESS CONTROL 1.0mm, the rolling deformation rate is 70%;
4, above-mentioned compound good stainless steel copper composite sheet material is carried out three kinds of intermetallic diffusion annealings, make it combine fastness to strengthen, reach not stratified effect.Adopt the bell jar furnace annealing, protective gas is the mist (i.e. 75% hydrogen+25% nitrogen) that ammonia decomposes in the stove, and protective money metal surface light is not oxidized, and surface film oxide is carried out high hydrogen reduction, and throughput is controlled to be 15～20m
3/ hour, mode of heating adopts the natural gas heating, and the diffusion annealing temperature is 1050 ℃, and temperature retention time is 2 hours, reaches molecular diffusion between stainless steel and the copper, makes its faying face form alloy-layer; 850 ~ 500 ℃ should be quickly cooled to 350 ℃ in the sensitized zone, avoid carbide to separate out, last furnace cooling, and temperature is to come out of the stove below 80 ℃ in the stove; Tensile strength reaches 450MPa, and percentage elongation is greater than 15%;
5, it is smooth the stainless steel copper composite sheet material after the above-mentioned diffusion annealing to be carried out planisher, eliminates material yield platform impression, guarantees surface smoothness greater than 7 grades, and smooth rate is less than 5%, and smooth power is 100～200 tons, and speed is 20 meters/minute;
6, above-mentioned stainless steel copper composite sheet material after smooth is carried out stretch-bending straightening and handle, speed is 30 meters/minute, and elongation control is in 5%;
7, the stainless steel copper composite sheet material behind the above-mentioned stretch-bending straightening being carried out the scale itemize according to customer requirement is 304 stainless steels and the cold composite of copper, and minimum itemize width is 20mm, and width tolerance is ± 0.10, and itemize speed is 15 meters/minute.
The present invention relates to a kind of production method of 304 stainless steels and the cold composite sheet material of fine copper, 304 stainless steels and T2 fine copper composite sheet material be a kind of be substrate with 304 stainless steels, the energy-efficient advanced composite material (ACM) of bimetallic of single or double complex copper layer.The surface that had both had copper material light attractive in appearance, favorable extensibility, thermal conductivity, corrosion resistance, wearability have 304 stainless steel good comprehensive performances again.
Claims (5)
1. the production method of stainless steel and the cold composite sheet material of fine copper is characterized in that: adopt following processing step:
(1), raw-material surface treatment:
Raw material: substrate is selected 304 cold-rolling stainless steel coiled materials for use, and composite bed is selected the copper coiled material for use, and the compound ratio of material is 10～20%; With the cleaning and degreasing method 304 cold-rolling stainless steel coiled materials, fine copper coiled material are carried out surface deoiling and handle, the molten employing of degreasing mass concentration is 12%～18% NaOH solution, and temperature is controlled at 60 ℃～80 ℃; Degreasing time is as the criterion 90～110 ℃ of bake out temperatures with strip surface light, no greasy dirt
(2), composite rolling:
(a), the width of 304 cold-rolling stainless steel coiled materials is 500～650mm; Thickness is 0.5～2.5mm; 304 cold-rolling stainless steel coiled materials are carried out the surface texturing polishing in Sanding Area, require 304 cold-rolling stainless steel coiled material overall with uniform grindings, grinding depth is 0.05～0.10mm;
(b), the fine copper coiled material carried out single face carefully brush, remove surface film oxide, fine copper coiled material thickness is 0.2mm～0.5mm, width is 500～650mm;
(c), above-mentioned 304 cold-rolling stainless steel coiled materials and two kinds of metal materials of fine copper coiled material of handling well through polishing are sent on the composite rolling mill; Carrying out synchronous normal-temperature continuous composite rolling is stainless steel copper composite sheet material; 304 cold-rolling stainless steel coiled material tension force are set at 4000～5000Kg; Copper coiled material tension force is set at 200～400Kg, and compound backward pull is set at 6000～8000Kg, and composite rolling mill speed is 10～20 meters/minute;
(3), diffusion annealing: the stainless steel copper composite sheet material through after rolling carries out the diffusion annealing of alloy-layer, and annealing way adopts the bell-type slow cooling, and furnace atmosphere is the ammonia decomposition gas; Promptly 75% hydrogen+25% nitrogen is assurance copper and stainless diffusion annealing, and stainless steel copper composite sheet material annealing temperature is 1050 ℃～1150 ℃; Temperature retention time is slowly cooling after 2～3 hours; 850～500 ℃ should be quickly cooled to 350 ℃ in the sensitized zone, separate out to avoid carbide, slowly cool to 75～85 ℃ at last and come out of the stove; Tensile strength reaches 380MPa～480MPa, and percentage elongation is greater than 15%;
(4), will under planisher, carry out smoothly through the stainless steel copper composite sheet material after the diffusion annealing, temper pressure is 100～200 tons, smooth speed is 20～50 meters/minute;
(5), above-mentioned stainless steel copper composite sheet material after smooth carried out stretch-bending straightening handle, speed is 20～50 meters/minute, elongation control is in 5%; Guarantee surface smoothness greater than 7 grades, smooth amount is less than 5%;
(6) the stainless steel copper composite sheet material behind the above-mentioned stretch-bending straightening being carried out the scale itemize according to customer requirement is 304 stainless steels and the cold composite of copper, and minimum itemize width is 20mm, and width tolerance is ± 0.10, and itemize speed is 12～18 meters/minute.
2. the production method of a kind of 304 stainless steels as claimed in claim 1 and the cold composite of fine copper is characterized in that: stainless steel copper composite sheet material composite thickness is controlled at 0.8～1.0mm in the said composite rolling step (2), and the rolling deformation rate is 70～80%.
3. the production method of a kind of 304 stainless steels as claimed in claim 1 and the cold composite of fine copper; It is characterized in that: in the said composite rolling step (2); 304 cold-rolling stainless steel coiled materials, two kinds of metal materials of fine copper coiled material are not heat-treated, and carry out bilayer or three layers of rolling compound stainless steel copper composite sheet material that is as requested.
4. the production method of a kind of 304 stainless steels as claimed in claim 3 and the cold composite of fine copper; It is characterized in that: substrate is 304 cold-rolling stainless steel coiled materials in the said double-layer stainless steel copper composite sheet material; Composite bed is the fine copper coiled material, and it is 10～20% that composite bed accounts for the composite weight ratio.
5. the production method of a kind of 304 stainless steels as claimed in claim 3 and the cold composite of fine copper; It is characterized in that: in said three layers of stainless steel copper composite sheet material; Substrate is 304 cold-rolling stainless steel coiled materials, and composite bed is two-layer fine copper coiled material, and it is 10～20% that composite bed accounts for the composite weight ratio.
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| CN113427854A (en) * | 2021-07-02 | 2021-09-24 | 温州宏丰特种材料有限公司 | Environment-friendly elastic functional composite material capable of replacing beryllium copper and preparation method and application thereof |
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| CN107225301A (en) * | 2017-06-20 | 2017-10-03 | 温州宏丰金属基功能复合材料有限公司 | The preparation of preseting solder stainless steel laminar composite and welding method |
| CN107225301B (en) * | 2017-06-20 | 2020-01-14 | 温州宏丰金属基功能复合材料有限公司 | Preparation and welding method of stainless steel layered composite material with preset brazing filler metal |
| CN107377619A (en) * | 2017-07-14 | 2017-11-24 | 北钢联（北京）重工科技有限公司 | Multilayer cold rolling composite plate technique |
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| CN108114998A (en) * | 2017-12-30 | 2018-06-05 | 江苏创泰特钢制品有限公司 | Composite alloy plate and preparation method thereof |
| CN108555039A (en) * | 2018-03-30 | 2018-09-21 | 中国石油大学(北京) | Copper/steel layer shape composite material and preparation method thereof and the composite material being prepared |
| CN109127763A (en) * | 2018-07-23 | 2019-01-04 | 无锡银荣板业有限公司 | A kind of production method of aluminium/three layers of hot composite material of aluminium/stainless steel |
| CN110653258A (en) * | 2019-09-24 | 2020-01-07 | 江苏中色复合材料有限公司 | Production method of stainless steel and copper composite coiled material |
| CN113427854A (en) * | 2021-07-02 | 2021-09-24 | 温州宏丰特种材料有限公司 | Environment-friendly elastic functional composite material capable of replacing beryllium copper and preparation method and application thereof |
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