CN110306026B - Method for processing precision stainless steel band for high-end household appliance panel - Google Patents
Method for processing precision stainless steel band for high-end household appliance panel Download PDFInfo
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- CN110306026B CN110306026B CN201910529129.4A CN201910529129A CN110306026B CN 110306026 B CN110306026 B CN 110306026B CN 201910529129 A CN201910529129 A CN 201910529129A CN 110306026 B CN110306026 B CN 110306026B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The method for processing the precision stainless steel band for the high-end household appliance panel can prepare the required precision stainless steel band through five procedures of initial rolling, secondary rolling, finish rolling, bright annealing and flattening. Compared with the prior art, the method for processing the precision stainless steel band for the high-end household appliance panel has the advantages that the poor surface color difference is obviously reduced by adjusting the compression ratio and controlling the rolling speed, the surface roughness of the working roll is changed, the rough lines on the surface are obviously improved, and the whitening degree is reduced; the bright furnace annealing is adjusted through the process, the temperature of the material is increased on the basis of the original process, the crystal grains are enabled to be full and uniform, 1 TV is increased on the basis of the original TV, and the yield is increased on the basis of ensuring the material performance.
Description
Technical Field
The invention relates to the technical field of precision stainless steel production, in particular to a method for processing a precision stainless steel band for a high-end household appliance panel.
Background
In order to achieve the effect of high-end atmosphere in appearance, the high-end household appliances use stainless steel as a support on an operation interface; at present, stainless steel used on a panel of a high-end household appliance still has insufficient elongation, so that the phenomenon of stamping cracking during processing is caused, the surface has the problems of roughness, whitening, color difference and the like, and certain influence is brought to the attractiveness of the panel.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a method for processing a precision stainless steel band for a high-end household appliance panel.
In order to solve the technical problems, the invention adopts the technical scheme that:
the processing method of the precision stainless steel band for the high-end household appliance panel comprises the following steps:
firstly, blooming: rolling a stainless steel coil of 2.7-3.0 mm by adopting a twenty-roller precision cold rolling unit, adjusting the compression ratios of the first three passes to be 15%, 16% and 17% respectively, rolling the stainless steel coil by using a second roller, controlling the rolling force to be 3000-4000KN, controlling the rolling tension to be at most 32T, controlling the rolling oil spraying speed to be 300L/min, the rolling oil temperature to be 45-55 ℃, controlling the first-pass rolling speed to be 100-times and the second-pass rolling speed to be 100-times and the third-pass rolling speed to be 200-times and the third-pass rolling speed to be 450m/min, and manufacturing the stainless steel strip with the surface roughness Ra of 0.38-0.42 mu m in the third pass;
step two, secondary rolling: a twenty-roller precision cold rolling unit is adopted, and the stainless steel strip with the surface roughness Ra of 0.12-18 mu m is manufactured by rolling a third roller in the last second pass and the third pass;
step three, finish rolling: a twenty-roller precision cold rolling unit is adopted, and a fifth roller is used for discharging materials in the last pass;
step four, bright annealing: sending the stainless steel strip after the finish rolling in the third step into an annealing furnace for annealing, setting the temperature of a first area of the annealing furnace to be 960 ℃, the temperature of a second area of the annealing furnace to be 1030 ℃, the temperature of a third area of the annealing furnace to be 1040 ℃, the temperature of a fourth area of the annealing furnace to be 970 ℃, the temperature of a fifth area of the annealing furnace to be 940 ℃, and setting the TV value to be 19, and quickly cooling after annealing to obtain a bright semi-finished stainless steel strip;
step five, leveling; and (4) flattening the semi-finished product of the stainless steel strip in the fourth step by a flattening machine to prepare the required precise stainless steel strip.
And the rest passes in the first step and the second step are both rolled by a second roller.
Wherein, the compression ratio is adjusted to 15-24% from the third pass to the penultimate pass in the first step and the second step.
Wherein, the rolling force is controlled to be 2000-4000KN in the second step, the maximum rolling tension is 32T, the temperature of the rolling oil is 45-55 ℃, and the spraying speed of the rolling oil is 300L/min.
Wherein the surface roughness Ra of the second roller is 0.38-0.45 mm.
Wherein the surface roughness Ra of the third roller is 0.12-18 mu m.
Wherein the surface roughness Ra of the fifth roller is less than 0.08 mu m.
Compared with the prior art, the method for processing the precision stainless steel band for the high-end household appliance panel has the following beneficial effects:
1. the poor surface color difference is obviously reduced by adjusting the compression ratio and controlling the rolling speed, the surface roughness of the working roll is changed, the coarse stripe lines on the surface are obviously improved, and the whitening degree is reduced;
2. the bright furnace annealing is adjusted through the process, the temperature of the material is increased on the basis of the original process, the crystal grains are enabled to be full and uniform, 1 TV is increased on the basis of the original TV, and the yield is increased on the basis of ensuring the material performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
The processing method of the precision stainless steel band for the high-end household appliance panel comprises the following steps:
firstly, blooming: rolling a stainless steel coil of 2.7-3.0 mm by adopting a twenty-roller precision cold rolling unit, adjusting the compression ratios of the first three passes to be 15%, 16% and 17% respectively, rolling the stainless steel coil by using a second roller, controlling the rolling force to be 3000-4000KN, controlling the rolling tension to be at most 32T, controlling the rolling oil spraying speed to be 300L/min, the rolling oil temperature to be 45-55 ℃, controlling the first-pass rolling speed to be 100-times and the second-pass rolling speed to be 100-times and the third-pass rolling speed to be 200-times and the third-pass rolling speed to be 450m/min, and manufacturing the stainless steel strip with the surface roughness Ra of 0.38-0.42 mu m in the third pass;
step two, secondary rolling: a twenty-roller precision cold rolling unit is adopted, and the stainless steel strip with the surface roughness Ra of 0.12-18 mu m is manufactured by rolling a third roller in the last second pass and the third pass;
step three, finish rolling: a twenty-roller precision cold rolling unit is adopted, and a fifth roller is used for discharging materials in the last pass;
step four, bright annealing: sending the stainless steel strip after the finish rolling in the third step into an annealing furnace for annealing, wherein the temperature of a first area of the annealing furnace is 960 ℃, the temperature of a second area of the annealing furnace is 1030 ℃, the temperature of a third area of the annealing furnace is 1040 ℃, the temperature of a fourth area of the annealing furnace is 970 ℃, the temperature of a fifth area of the annealing furnace is 940 ℃, the TV value is 19, the temperature of the stainless steel strip after passing through the annealing furnace reaches 830 ℃, and quickly cooling after annealing to obtain a bright semi-finished stainless steel strip;
step five, leveling; and (4) flattening the semi-finished product of the stainless steel strip in the fourth step by a flattening machine to prepare the required precise stainless steel strip.
And the rest passes in the first step and the second step are both rolled by a second roller.
Wherein, the compression ratio is adjusted to 15-24% from the third pass to the penultimate pass in the first step and the second step.
Wherein, the rolling force is controlled to be 2000-4000KN in the second step, the maximum rolling tension is 32T, the temperature of the rolling oil is 45-55 ℃, and the spraying speed of the rolling oil is 300L/min.
Wherein the surface roughness Ra of the second roller is 0.38-0.45 mm.
Wherein the surface roughness Ra of the third roller is 0.12-18 mu m.
Wherein the surface roughness Ra of the fifth roller is less than 0.08 mu m.
At present, the precision stainless steel strip with the thickness of 0.27-0.34 mm can be prepared by adopting the processing steps of 10 times, the precision stainless steel strip with the thickness of 0.35-0.51 mm can be prepared by adopting the processing steps of 9 times, the precision stainless steel strip with the thickness of 0.52-0.62 mm can be prepared by adopting the processing steps of 8 times, the precision stainless steel strip with the thickness of 0.63-0.86 mm can be prepared by adopting the processing steps of 7 times, and the precision stainless steel strip with the thickness of more than 0.86mm can be prepared by adopting the processing steps of 6 times.
The present invention is not limited to the embodiments described above, and those skilled in the art may make modifications or changes within the scope of the disclosure without departing from the spirit of the present invention, so that the scope of the present invention is defined by the appended claims.
Claims (7)
1. The processing method of the precise stainless steel band for the high-end household appliance panel is characterized by comprising the following steps of: the method comprises the following steps:
firstly, blooming: rolling a stainless steel coil of 2.7-3.0 mm by adopting a twenty-roller precision cold rolling unit, adjusting the compression ratios of the first three passes to be 15%, 16% and 17% respectively, rolling the stainless steel coil by using a second roller, controlling the rolling force to be 3000-4000KN, controlling the rolling tension to be at most 32T, controlling the rolling oil spraying speed to be 300L/min, the rolling oil temperature to be 45-55 ℃, controlling the first-pass rolling speed to be 100-times and the second-pass rolling speed to be 100-times and the third-pass rolling speed to be 200-times and the third-pass rolling speed to be 450m/min, and manufacturing the stainless steel strip with the surface roughness Ra of 0.38-0.42 mu m in the third pass;
step two, secondary rolling: a twenty-roller precision cold rolling unit is adopted, and the stainless steel strip with the surface roughness Ra of 0.12-18 mu m is manufactured by rolling a third roller in the last second pass and the third pass;
step three, finish rolling: a twenty-roller precision cold rolling unit is adopted, and a fifth roller is used for discharging materials in the last pass;
step four, bright annealing: sending the stainless steel strip after the finish rolling in the third step into an annealing furnace for annealing, setting the temperature of a first area of the annealing furnace to be 960 ℃, the temperature of a second area of the annealing furnace to be 1030 ℃, the temperature of a third area of the annealing furnace to be 1040 ℃, the temperature of a fourth area of the annealing furnace to be 970 ℃, the temperature of a fifth area of the annealing furnace to be 940 ℃, and setting the TV value to be 19, and quickly cooling after annealing to obtain a bright semi-finished stainless steel strip;
step five, leveling; and (4) flattening the semi-finished product of the stainless steel strip in the fourth step by a flattening machine to prepare the required precise stainless steel strip.
2. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: and rolling the rest passes in the first step and the second step by a second roller.
3. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: and adjusting the compression ratio to be 15-24% from the third pass to the penultimate pass in the first step and the second step.
4. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: in the second step, the rolling force is controlled to be 2000-4000KN, the maximum rolling tension is 32T, the temperature of the rolling oil is 45-55 ℃, and the spraying speed of the rolling oil is 300L/min.
5. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: the surface roughness Ra of the second roller is 0.38-0.45 mm.
6. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: the surface roughness Ra of the third roller is 0.12-18 mu m.
7. The method for processing the precision stainless steel strip for the high-end household appliance panel according to claim 1, wherein the method comprises the following steps: the surface roughness Ra of the fifth roller is less than 0.08 mu m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910529129.4A CN110306026B (en) | 2019-06-19 | 2019-06-19 | Method for processing precision stainless steel band for high-end household appliance panel |
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| CN201910529129.4A CN110306026B (en) | 2019-06-19 | 2019-06-19 | Method for processing precision stainless steel band for high-end household appliance panel |
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| CN110306026A CN110306026A (en) | 2019-10-08 |
| CN110306026B true CN110306026B (en) | 2021-02-02 |
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| CN114156492B (en) * | 2021-11-19 | 2024-01-19 | 上海实达精密不锈钢有限公司 | Precise strip for fuel cell metal bipolar plate and processing technology thereof |
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| CN107042235B (en) * | 2017-06-02 | 2018-07-27 | 江苏甬金金属科技有限公司 | The production method of very thin ferritic stainless steel band with glossy surface |
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