CN100560354C - A kind of production technology of composite nickel steel band - Google Patents
A kind of production technology of composite nickel steel band Download PDFInfo
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- CN100560354C CN100560354C CNB2006100859877A CN200610085987A CN100560354C CN 100560354 C CN100560354 C CN 100560354C CN B2006100859877 A CNB2006100859877 A CN B2006100859877A CN 200610085987 A CN200610085987 A CN 200610085987A CN 100560354 C CN100560354 C CN 100560354C
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Abstract
The present invention relates to a kind of production technology of composite nickel steel band, specifically be widely used in the box hat material in high-energy rechargeable battery and the normal domestic battery, belong to battery steel shell baseplate material technical field.It mainly adopts the cold-rolled strip single or double respectively through sour Xian, cold rolling, side cut, degreasing, heat treatment, smooth, straightening, electroless nickel layer, is finished product through diffusion annealing, smooth, sub-cut again.Thickness of strips is: 0.10～0.50mm, width is: 100～550mm.Nickel coating thickness is: 0.5～8 μ m.Manufacturing process of the present invention is simple, can reduce production costs, and the post processing of product is also simpler; Adopt four-high mill to carry out cold rolling, through rational nickel coating technology, thereby reach the steel band mechanical performance of deep drawn, deep draw moulding requirement, and after drawn strikes out battery case, the nickel dam uniformity, decay resistance is high, is suitable for suitability for industrialized production and uses, and has solved the urgent need of domestic and international high-energy battery, automobile, the contour performance materials of computer.
Description
Technical field
The present invention relates to a kind of production technology of high precision composite nickel steel band.Specifically be widely used in the box hat material in high-energy rechargeable battery and the normal domestic battery, belong to battery steel shell baseplate material technical field.
Background technology
Cell shapes can be divided into various special-shaped batteries such as cylindrical shape, plate shaped and button shaped, and wherein cylindrical shape is in use with the most use.Cylindrical battery can be divided into high-energy rechargeable battery and normal domestic battery again.Make these batteries and all need the most basic material: battery case.Battery case is to be formed by the nickel plated steel strip manufacturing.The process of battery case normally becomes box hat with the deep drawing sheet steel stretching and punching earlier, on box hat, electroplate one deck nickel then, the shortcoming of this method is that nickel dam is inhomogeneous, the cylinder inner bottom part is difficult to plate enough nickel dams, and this nickel dam is comparatively loose, decay resistance is low, has a strong impact on the serviceability of battery.For example high-energy battery can't nickel plating with box hat footing position and welded junction part and is revealed iron and cause self discharge maybe can't charge and scrap.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, it is raw material that thereby a kind of mild steel hot rolled strip is provided, adopt four-high mill to carry out cold rolling, seek best rolling, degreasing, electronickelling, heat treatment, technology such as smooth, thereby reach the steel band mechanical performance of deep drawn, deep draw moulding requirement; After drawn strikes out battery case, nickel dam uniformity, the production technology of the high precision composite nickel steel band that decay resistance is high.
According to technical method provided by the invention, a kind of production technology of composite nickel steel band, adopt following processing step:
1, is that the hot-rolled steel roll coil of strip raw material of 1.8～3.2mm carries out pickling processes earlier, and acid solution heated that heating-up temperature is: 70 ℃～80 ℃, pickling speed is: 10～20 meters/minute to thickness;
2, the hot-rolled steel roll coil of strip raw material of above-mentioned pickling processes being crossed adopts four-high mill to carry out rolling process, the lubricating and cooling agent emulsion, and cold rolling through 9～11 passages, thickness is: 0.15～0.50mm; Four-high mill speed is: 200～400 meters/minute;
3, to above-mentioned cold-rolled strip cut edge, degreasing, loose winding handle degreasing speed: 70～80 meters/minute;
4, the cold-rolled strip that degreasing, loose winding were handled is heat-treated, and uses volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, make steel strip surface not oxidized, with nitrogen and vacuumize and carry out prepurging, furnace air is drained fully, heat up with 45～55 ℃ speed per hour then, when being raised to 400～500 ℃, be incubated 3～5 hours, continue to be raised to 580～690 ℃ then, being incubated after 11～16 hours outage and being cooled to 520～580 ℃ and taking off heating mantles, air-cooled to 320～380 ℃, ℃ come out of the stove in water-cooled to 70～80;
5, cold-rolled strip after heat treatment carries out smooth, smooth roller adopts (texturing roller), roughness is: 0.6～0.8 μ m, convexity is: 0.05～0.07mm, drawn bending straightening again after smooth, tension force is in stretch-bend leveller: 280～320Mpa, and speed is: 80～100 meters/minute;
6, drawn is aligned laggard electroplating nickel:
(1), electrochemical deoiling: the steel band behind the drawn aligning is carried out electrochemical deoiling, and carry out spray irrigation; Get and remove oil-bound distemper and be: 60～70 grams per liters are mixed with except that oil-bound distemper solution, and to removing the heating of oil-bound distemper solution, temperature is: 70～85 ℃; Removing speed oil is: 80～100 meters/minute;
(2), electrolytic degreasing: the steel band of crossing through spray irrigation carries out electrolytic degreasing, and scrubs; Electrolytic degreasing solution is prepared with NaOH, water, and NaOH is: 2～4% (weight), and all the other are water; And to the electrolytic solution heating, temperature is: 70～85 ℃; Electric current: 3000A; Electrolytic degreasing speed is: 80～100 meters/minute;
(3), pickling: carry out pickling through electrolytic degreasing, the steel band scrubbed, and scrub.Acidwash solution is prepared with hydrochloric acid, water, and hydrochloric acid is: 3～9% (weight), and all the other are water; Pickling speed is: 80～100 meters/minute; The operating temperature room temperature gets final product, and must not heat;
(4), carry out electronickelling, the prescription of nickel coating electroplate liquid is formed: count with grams per liter: nickel sulfamic acid is: 300～450, sodium chloride is: 20～25, boric acid is through pickling, the steel band scrubbed: 25～32, and PH:4～5.5; Temperature of electroplating solution is: 40～55 ℃, current density is: 5～25 amperes/square decimeter; Nickel coating thickness is: 0.5～8 μ m;
(5), after electronickelling, carry out spray irrigation;
(6), steel band dries processing behind spray irrigation, bake out temperature is: 120～140 ℃; Nickel plated steel strip after the drying carries out Electrostatic greasing, and being coated with oil mass is 2～6mg/
M2
7, steel band enters the diffusion annealing processing behind Electrostatic greasing, and diffusion annealing is handled and used volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, heat up with 45～55 ℃ speed per hour then, when rising to 590～610 ℃, be incubated after 10～12 hours and cuts off the power supply, be cooled to 520～580 ℃ and take off heating mantles, cool to 320～380 ℃ with the furnace and carry out water-cooled to 70～80 ℃ come out of the stove;
8, the nickel plated steel strip after diffusion annealing is handled carry out smooth, be cut to finished product.
Compared with the prior art the present invention has the following advantages:
Manufacturing process of the present invention is simple, can reduce production costs, and the post processing of product is also simpler; Adopt four-high mill to carry out cold rolling, electronickelling technology through the advanced person, thereby reach the steel band mechanical performance of deep drawn, deep draw moulding requirement, and after drawn strikes out battery case, the nickel dam uniformity, decay resistance is high, is suitable for suitability for industrialized production, has solved the urgent need of domestic and international high-energy battery, automobile, the contour performance materials of computer.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a process chart of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Embodiment one:
The present invention selects the hot-rolled billet coiled strip for use, and thickness is: 1.8～3.2mm, length is decided according to client's needs.Cold-rolled strip thickness is after cold rolling: 0.15～0.5mm, width is: 100～550mm.
The present invention adopts following processing step:
1, hot-rolled billet volume raw material is carried out pickling processes earlier, pickling medium adopts aqueous hydrochloric acid solution concentration to be not less than 15%, and acid solution is heated with steam, temperature is: about 70 ℃, look steel strip surface clean level control pickling speed, be generally 15 meters/minute, the oxide skin of steel strip surface can be washed off to greatest extent like this;
2, according to the user thickness of the requirement of finished product steel belt physical property and final finished is selected the thickness of rolling process number and hot rolling band.Rollingly on four-high mill, carry out, because will thick to be rolled to 0.15～0.5mm thick from 1.8～3.2mm with the thickness of hot rolling band, total reduction ratio reaches more than 90%, for guaranteeing the cleannes and the pollution of minimizing of trying one's best on finished product steel belt surface in the future to the rolling mill practice lubricating and cooling agent, therefore, rolling process adopts emulsion, and the volumetric concentration of emulsion is chosen as: 4-6%, pH value is: 7～8, and oil QUAK ROLL II number of preparation emulsion.Four-high mill speed is: 200 meters/minute, carry out degreasing then;
3, in order to guarantee the clean of steel strip surface and when annealing, can not to bond, to cold-rolled strip to cut edge, degreasing, loose winding handle, degreasing is to carry out on a continuous lines, through metal surface detergent solution groove → water jet-bedding → NaOH alkali groove and electric Jie's degreasing → clear water wash → scrub → dry → rewinding.The volumetric concentration of detergent solution is: 7～8%, and NaOH solution is: 35～45%, solution temperature is: 65 ℃～75 ℃, bake out temperature is: 100 ℃, degreasing speed is: 70 meters/minute;
4, the cold-rolled strip behind heavy reduction rate will be heat-treated to recover its processability, and for guaranteeing the not oxidized maintenance light of steel strip surface, we use volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, the source of nitrogen hydrogen protective gas is for decomposing when 800 ℃ of left and right sides with liquid ammonia, use Ni makes catalyst 2NH3=N2+3H2.For guaranteeing after annealing, to obtain good processing properties, after shove charge with nitrogen and vacuumize and carry out prepurging, furnace air is drained fully, then with per hour 45 ℃ speed intensification, insulation is 3 hours when being raised to 400 ℃, continue then to be raised to 600 ℃ of insulations after 11 hours outage be cooled to 520 ℃ and take off heating mantles, air-cooled to 320 ℃, water-cooled to 70 ℃ is come out of the stove;
5, cold-rolled strip after heat treatment carries out smoothly, and smooth roller adopts (texturing roller), and roughness is: 0.6 μ m; Convexity is: 0.07mm, and drawn bending straightening again after smooth, tension force is in stretch-bend leveller: 280Mpa, speed is: 80 meters/minute; Steel band after straightening is handled becomes more straight.
6, drawn is aligned laggard electroplating nickel:
(1), electrochemical deoiling: the steel band behind the drawn aligning is carried out electrochemical deoiling, and carry out spray irrigation; Get
Removing oil-bound distemper is: 60 grams per liters are mixed with except that oil-bound distemper solution, and to removing the heating of oil-bound distemper solution, temperature is: 70 ℃; Removing speed oil is: 80 meters/minute;
(2), electrolytic degreasing: the steel band of crossing through spray irrigation carries out electrolytic degreasing, and scrubs; Get 3% (weight) NaOH, all the other make electrolytic solution for water; And to the electrolytic solution heating, temperature is: 70 ℃; Electric current: 3000A; Electrolytic degreasing speed is: 80 meters/minute;
(3), pickling: carry out pickling and scrub through electrolytic degreasing, the steel band scrubbed, get 3% (weight) acid, all the other make Acidwash solution for water; Pickling speed is: 80 meters/minute;
(4), carry out two-sided electronickelling on steel band, the prescription of nickel plating electroplate liquid is formed: count with grams per liter: nickel sulfamic acid is: 300, sodium chloride is: 20, boric acid is: 28 through pickling, the steel band scrubbed; The nickel coating temperature is: 42 ℃, current density is: 10 amperes/square decimeter; Nickel coating thickness is: 2.4 μ m;
(5), behind nickel coating, carry out spray irrigation;
(6), steel band dries processing behind spray irrigation, bake out temperature is: 120 ℃; Nickel plated steel strip after the drying adopts DOS oil to carry out Electrostatic greasing, and being coated with oil mass is 2mg/m
2
7, steel band enters the diffusion annealing processing behind nickel coating, and diffusion annealing is handled and used volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, heat up with 45 ℃ speed per hour then, when rising to 590 ℃, be incubated after 10 hours and cuts off the power supply, be cooled to 520 ℃ and take off heating mantles, cool to 320 ℃ with the furnace and carry out water-cooled to 70 and ℃ come out of the stove;
8, the nickel plated steel strip after diffusion annealing is handled carry out smooth, be cut to finished product.Cutting is that the use width according to customer requirements carries out mailing to the user after the itemize packing.
Embodiment two
The present invention selects the hot-rolled billet coiled strip for use, and thickness is: 1.8～3.2mm, length is decided according to client's needs.Cold-rolled strip thickness is after cold rolling: 0.15～0.50mm, width is: 100～550mm.
The present invention adopts following processing step:
1, hot-rolled billet volume raw material is carried out pickling processes earlier, pickling medium adopts aqueous hydrochloric acid solution concentration to be not less than 15%, and with steam acid solution is heated, and temperature is: about 75 ℃, look steel strip surface clean level control pickling speed, be generally 15 meters/minute;
2, carry out after the pickling processes cold rolling, cold rollingly on four-high mill, carry out, thick to be rolled to 0.15～0.50mm thick from 1.8-3.2mm with the thickness of hot rolling band, total reduction ratio reaches more than 90%, rolling process adopts emulsion, the volumetric concentration of emulsion is chosen as: 4～6%, and pH value is: 7, oil QUAK ROLL II number of preparation emulsion.Four-high mill speed is: 300 meters/minute;
3, to cold-rolled strip to cut edge, degreasing, loose winding handle, degreasing is to carry out on a continuous lines, degreasing speed is: 75 meters/minute;
4, for guaranteeing the not oxidized maintenance light of steel strip surface, we use volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, for guaranteeing after annealing, to obtain good processing properties, after shove charge with nitrogen and vacuumize and carry out prepurging, furnace air is drained fully, heat up with 50 ℃ speed per hour then, insulation is 4 hours when being raised to 450 ℃, continue then to be raised to 610 ℃ of insulations after 12 hours outage be cooled to 550 ℃ and take off heating mantles, air-cooled to 350 ℃, water-cooled to 75 ℃ is come out of the stove;
5, cold-rolled strip after heat treatment carries out smoothly, and smooth roller adopts the texturing roller, and roughness is: 0.7um, and convexity is: 0.07mm, drawn bending straightening again after smooth, tension force is in stretch-bend leveller: 300Mpa, speed is: 90 meters/minute;
6, drawn is aligned laggard electroplating nickel:
(1), electrochemical deoiling: the steel band behind the drawn aligning is carried out electrochemical deoiling, and carry out spray irrigation; Get and remove oil-bound distemper and be: 65 grams per liters are mixed with except that oil-bound distemper solution, and to removing the heating of oil-bound distemper solution, temperature is: 75 ℃; Removing speed oil is: 90 meters/minute;
(2), electrolytic degreasing: the steel band of crossing through spray irrigation carries out electrolytic degreasing, and scrubs; Get 3% (weight) NaOH, all the other make electrolytic degreasing liquid for water; And to the electrolytic solution heating, temperature is: 75 ℃; Electric current: 3000A; Electrolytic degreasing speed is: 90 meters/minute;
(3), pickling: carry out pickling through electrolytic degreasing, the steel band scrubbed, get the hydrochloric acid of 5% (weight), all the other make Acidwash solution for water; Pickling speed is: 90 meters/minute;
(4), carry out electroless nickel layer respectively, the prescription of electroless nickel layer electroplate liquid is formed: count with grams per liter: nickel sulfamic acid is: 380, sodium chloride is: 23, boric acid is: 28 through front 2, the reverse side 3 of pickling, the steel band 1 scrubbed; The nickel-plating liquid temperature is: 50 ℃, current density is: 15 amperes/square decimeter; Nickel coating thickness is: 3.5 μ m;
(5), behind nickel coating, carry out spray irrigation;
(6), steel band dries processing behind spray irrigation, bake out temperature is: 130 ℃; Nickel plated steel strip after the drying adopts DOS oil to carry out Electrostatic greasing, and being coated with oil mass is 4mg/m
2
7, steel band enters the diffusion annealing processing behind nickel coating, and diffusion annealing is handled and used volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, heat up with 50 ℃ speed per hour then, when rising to 500 ℃, be incubated after 11 hours and cuts off the power supply, be cooled to 550 ℃ and take off heating mantles, cool to 350 ℃ with the furnace and carry out water-cooled to 75 and ℃ come out of the stove;
8, the nickel plated steel strip after diffusion annealing is handled carry out smooth, be cut to finished product.
Embodiment three:
The present invention selects the hot-rolled billet coiled strip for use, and thickness is: 1.8～3.2mm, length is decided according to client's needs.
Cold-rolled strip thickness is after cold rolling: 0.1～0.50mm, width is: 100～550mm.
The present invention adopts following processing step:
1, hot-rolled billet volume raw material is carried out pickling processes earlier, and with steam to the acid solution heating-up temperature be: about 80 ℃, pickling speed is generally 20 meters/minute;
2, carry out rolling process after the pickling processes, rolling process is carried out on four-high mill, rolling process will thick to be rolled to 0.15～0.50mm thick from 1.8～3.2mm with the thickness of hot rolling band, total reduction ratio reaches more than 90%, rolling process adopts emulsion, the volumetric concentration of emulsion is chosen as: 4～6%, and pH value is: 7, four-high mill speed is: 400 meters/minute;
3, to cold-rolled strip to cut edge, degreasing, loose winding handle, degreasing is to carry out on a continuous lines, degreasing speed is: 80 meters/minute;
4, for guaranteeing the not oxidized maintenance light of steel strip surface, we use volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, after shove charge with nitrogen and vacuumize and carry out prepurging, furnace air is drained fully, then with per hour 55 ℃ speed intensification, insulation is 5 hours when being raised to 500 ℃, continue then to be raised to 620 ℃ of insulations after 13 hours outage be cooled to 580 ℃ and take off heating mantles, air-cooled to 380 ℃, water-cooled to 80 ℃ is come out of the stove;
5, cold-rolled strip after heat treatment carries out smoothly, and smooth roller adopts the texturing roller, and roughness is: 0.7 μ m, and convexity is: 0.07mm, drawn bending straightening again after smooth, tension force is in stretch-bend leveller: 320Mpa, speed is: 100 meters/minute;
6, drawn is aligned laggard electroplating nickel:
(1), electrochemical deoiling: the steel band behind the drawn aligning is carried out electrochemical deoiling, and carry out spray irrigation; Get and remove oil-bound distemper and be: 70 grams per liters are mixed with except that oil-bound distemper solution, and to removing the heating of oil-bound distemper solution, temperature is: 85 ℃; Removing speed oil is: 100 meters/minute;
(2), electrolytic degreasing: the steel band of crossing through spray irrigation carries out electrolytic degreasing, and scrubs; Get 4% (weight) NaOH, all the other make electrolytic solution for water; And to the electrolytic solution heating, temperature is: 85 ℃; Electric current: 3000A; Electrolytic degreasing speed is: 100 meters/minute;
(3), pickling: carry out pickling through electrolytic degreasing, the steel band scrubbed, get 9% (weight) hydrochloric acid, all the other make Acidwash solution for water; Pickling speed is: 100 meters/minute;
(4), carry out single face or two sides electronickelling respectively, the prescription of nickel plating electroplate liquid is formed: count with grams per liter: nickel sulfamic acid is: 450, sodium chloride is: 25, boric acid is: 28 through pickling, the steel band scrubbed; The nickel-plating liquid temperature is: 55 ℃, current density is: 20 amperes/square decimeter; Nickel coating thickness is: 4.5 μ m;
(5), behind nickel coating, carry out spray irrigation;
(6), steel band dries processing behind spray irrigation, bake out temperature is: 140 ℃; Nickel plated steel strip after the drying carries out Electrostatic greasing, and being coated with oil mass is 6mg/m
2
7, steel band enters the diffusion annealing processing behind nickel coating, and diffusion annealing is handled and used volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, heat up with 55 ℃ speed per hour then, when rising to 590 ℃, be incubated after 12 hours and cuts off the power supply, be cooled to 580 ℃ and hang heating mantles, cool to 380 ℃ with the furnace and carry out water-cooled to 80 and ℃ come out of the stove;
8, the nickel plated steel strip after diffusion annealing is handled carry out smooth, be cut to finished product.
The raw material that adopt in the embodiment of the invention are by being purchased on the market, and equipment such as the single-stand four-high rolling mill of use are conventional equipment.
Claims (1)
1, a kind of production technology of composite nickel steel band is characterized in that: adopt following processing step:
To thickness be the hot-rolled steel roll coil of strip raw material of 1.8～3.2mm carry out pickling processes, and acid solution heated that heating-up temperature is: 70 ℃～80 ℃, pickling speed is: 10～20 meters/minute (1), earlier;
(2), hot-rolled steel roll coil of strip raw material that above-mentioned pickling processes is crossed adopts four-high mill to carry out rolling process, the lubricating and cooling agent emulsion, cold rolling through 9～11 passages, thickness is: 0.15～0.50mm; Four-high mill speed is: 200～400 meters/minute;
(3), to above-mentioned cold-rolled strip cut edge, degreasing, loose winding handle degreasing speed: 70～80 meters/minute;
(4), cold-rolled strip that degreasing, loose winding were handled heat-treats, and uses volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, make steel strip surface not oxidized, with nitrogen and vacuumize and carry out prepurging, furnace air is drained fully, heat up with 45～55 ℃ speed per hour then, when being raised to 400～500 ℃, be incubated 3～5 hours, continue to be raised to 580～690 ℃ then, being incubated after 11～16 hours outage and being cooled to 520～580 ℃ and taking off heating mantles, air-cooled to 320～380 ℃, ℃ come out of the stove in water-cooled to 70～80;
(5), cold-rolled strip after heat treatment carries out smooth, roughness is: 0.6～0.8 μ m, and convexity is: 0.05～0.07mm, drawn bending straightening again after smooth, tension force is in stretch-bend leveller: 280～320Mpa, and speed is: 80～100 meters/minute;
(6), drawn is aligned laggard electroplating nickel dam:
(a), electrochemical deoiling: the steel band behind the drawn aligning is carried out electrochemical deoiling, and carry out spray irrigation; Get except that oil-bound distemper is mixed with 60～70 grams per liters and remove oil-bound distemper solution, and to removing the heating of oil-bound distemper solution, temperature is: 70～85 ℃; Removing speed oil is: 80～100 meters/minute;
(b), electrolytic degreasing: the steel band of crossing through spray irrigation carries out electrolytic degreasing, and scrubs; Getting NaOH is: 2～4% (weight), and all the other are water, make electrolytic degreasing solution; And to the heating of electrolytic degreasing solution, temperature is: 70～85 ℃; Electric current: 3000A; Electrolytic degreasing speed is: 80～100 meters/minute;
(c), pickling: carry out pickling through electrolytic degreasing, the steel band scrubbed, and scrub; Getting hydrochloric acid is: 3～9% (weight), and all the other are water, make Acidwash solution; Pickling speed is: 80～100 meters/minute;
(d), carry out electronickelling, the prescription of nickel plating electroplate liquid is formed: count with grams per liter: nickel sulfamic acid is: 300～450, sodium chloride is: 20～25, boric acid is through pickling, the steel band scrubbed: 25～32, and PH:4～5.5; Temperature of electroplating solution is: 40～55 ℃, current density is: 5～25 amperes/square decimeter; Nickel coating thickness is: 0.5～8 μ m;
(e), after electronickelling, carry out spray irrigation;
(f), steel band dries processing behind spray irrigation, bake out temperature is: 120～140 ℃; Nickel plated steel strip after the drying carries out Electrostatic greasing, and being coated with oil mass is 2～6mg/m
2
(7), steel band enters diffusion annealing and handles behind Electrostatic greasing, diffusion annealing is handled and is used volume content to be 25%N
2And 75%H
2Nitrogen hydrogen protective gas, heat up with 45～55 ℃ speed per hour then, when rising to 590～610 ℃, be incubated after 10～12 hours and cuts off the power supply, be cooled to 520～580 ℃ and take off heating mantles, cool to 320～380 ℃ with the furnace and carry out water-cooled to 70～80 ℃ come out of the stove;
(8), the nickel plated steel strip after diffusion annealing is handled carry out smooth, be cut to finished product.
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| CN107723756A (en) * | 2017-08-29 | 2018-02-23 | 无锡鼎亚电子材料有限公司 | Sulfamic acid type impacts the preparation method of nickel |
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| CN111015108B (en) * | 2019-12-19 | 2021-11-02 | 北京首钢股份有限公司 | Method for controlling surface defects of pickled plate |
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| CN114700698B (en) * | 2022-04-25 | 2024-03-19 | 天津冶金集团天材科技发展有限公司 | Processing technology of nickel-based corrosion-resistant alloy strip |
| CN114918622B (en) * | 2022-05-31 | 2023-10-20 | 江苏苏讯新材料科技股份有限公司 | Deep-drawing tank processing technology |
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2006
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