CN112337992A - Cold-rolled strip steel strength improving process - Google Patents
Cold-rolled strip steel strength improving process Download PDFInfo
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- CN112337992A CN112337992A CN202010992270.0A CN202010992270A CN112337992A CN 112337992 A CN112337992 A CN 112337992A CN 202010992270 A CN202010992270 A CN 202010992270A CN 112337992 A CN112337992 A CN 112337992A
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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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- 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
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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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
- B21B2001/221—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 by cold-rolling
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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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
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Abstract
The invention discloses a strength improving process of cold-rolled strip steel, which comprises the following steps: soaking the strip steel in acid liquor, and enabling the acid liquor and the strip steel to move relatively; spraying lubricating liquid on the surface of the pickled strip steel; rolling the lubricated strip steel for one time by using a six-roller multi-roller rolling mill to obtain a cold-rolled strip steel billet; and then, polishing and shearing are carried out, secondary rolling is carried out on the polished and sheared cold-rolled strip steel billet, and annealing and leveling are carried out to obtain the high-strength cold-rolled strip steel. According to the strength improvement process of the cold-rolled strip steel, the strip steel is gradually made to reach the required shape by adopting a rolling progressive deformation mode, the cold bending performance of the cold-rolled strip steel is improved by progressive rolling, the tissue of the cold-rolled strip steel is fine and uniform, the flatness of the cold-rolled strip steel is improved, the roughness of the surface of the cold-rolled strip steel is reduced by polishing, the surface of the prepared cold-rolled strip steel is smoother, the edges of two sides of the cold-rolled strip steel are tidy by shearing, and the regularity of the cold-rolled strip steel is improved.
Description
Technical Field
The invention relates to the technical field of cold-rolled steel, in particular to a cold-rolled strip steel strength improving process.
Background
The cold-rolled steel has good performance, namely, cold-rolled strip steel and steel plates with thinner thickness and higher precision can be obtained by cold rolling, the cold-rolled strip steel is easy to be coated and processed, has multiple varieties and wide application, and has the characteristics of high stamping performance, no aging and low yield point;
the high-strength steel is more difficult to produce than steel with common strength in a steel mill, has high requirements on equipment, high equipment loss, difficult quality control and high roughness.
Disclosure of Invention
The invention mainly aims to provide a cold-rolled strip steel strength improving process which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a cold-rolled steel strip strength improving process comprises the following steps:
(1) acid cleaning, namely soaking the strip steel in acid liquor, and enabling the acid liquor and the strip steel to move relatively to remove an oxide film on the cold-rolled strip steel;
(2) lubricating, namely spraying lubricating liquid on the surface of the strip steel subjected to acid pickling in the step (1), wherein the lubricating liquid is emulsion to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 1-2 times of rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill to obtain a cold-rolled strip steel billet;
(4) polishing and shearing, namely selecting 1-3 groups of machine frame grinding heads configured by a machine set by adopting a wet-type abrasive belt polishing method, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 3-6 times of rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller rolling mill, and performing 4-5 times of heat treatment in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 1-2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
Preferably, in the step (1), the pickling temperature is 60-80 ℃, the concentration of the acid liquor is 10-20%, and the pickling speed is 60-90 m/min.
Preferably, in the step (1), the strip steel is subjected to primary washing before pickling, is subjected to secondary washing after pickling, and is dried after the secondary washing.
Preferably, in the step (2), the emulsion consists of 3-7% of vegetable oil, emulsifier and water.
Preferably, in the step (4), the type of the abrasive belt is selected to be 70-110 meshes, and the grinding speed is 8-20 m/min.
Preferably, in the step (3), the rolling pressure is 800-1200 kN.
Preferably, the annealing temperature in the step (6) is 1000-1200 ℃, and the speed is 20-30 m/min.
Preferably, in the step (5), the rolling pressure is 1300-1500 kN.
Compared with the prior art, the invention has the following beneficial effects: according to the strength improvement process of the cold-rolled strip steel, the strip steel is gradually made to reach a required shape by adopting a rolling progressive deformation mode, the cold bending performance of the cold-rolled strip steel is improved by progressive rolling, the structure of the cold-rolled strip steel is fine and uniform, the flatness of the cold-rolled strip steel is improved, the roughness of the surface of the cold-rolled strip steel is reduced by polishing, the surface of the manufactured cold-rolled strip steel is smoother, the edges of two sides of the cold-rolled strip steel are tidy by shearing, and the regularity of the cold-rolled strip steel is improved.
Drawings
FIG. 1 is a flow chart of the strength improvement process of cold-rolled strip steel of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
(1) Carrying out first water washing on the strip steel, soaking the strip steel in acid liquor for acid washing after the first water washing, wherein the acid washing temperature is 65 ℃, the concentration of the acid liquor is 12%, the acid liquor and the strip steel move relatively, the acid washing speed is 66m/min, carrying out second water washing after the acid washing, and drying the strip steel after the second water washing;
(2) lubricating, namely spraying emulsion on the surface of the strip steel subjected to acid pickling in the step (1), wherein the emulsion consists of 5% of vegetable oil, emulsifier and water, so as to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 2-pass rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill at the rolling pressure of 800kN to obtain cold-rolled strip steel blanks;
(4) polishing and shearing, namely selecting 3 groups by using a wet-type abrasive belt polishing method through 3 groups of frame grinding heads configured by a unit, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 4-pass rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller mill at the rolling pressure of 1400kN, and performing 4-pass heat treatment alternately in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 1 pass by using a two-roll leveling machine to obtain the high-strength cold-rolled strip steel.
Example 2
(1) Carrying out primary water washing on the strip steel, soaking the strip steel in acid liquor for acid washing after the primary water washing, wherein the acid washing temperature is 63 ℃, the concentration of the acid liquor is 15%, the acid liquor and the strip steel move relatively, the acid washing speed is 70m/min, carrying out secondary water washing after the acid washing, and drying the strip steel after the secondary water washing;
(2) lubricating, namely spraying emulsion on the surface of the strip steel subjected to acid pickling in the step (1), wherein the emulsion consists of 3% of vegetable oil, emulsifier and water, so as to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 2-pass rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill at the rolling pressure of 860kN to obtain cold-rolled strip steel blanks;
(4) polishing and shearing, namely selecting 3 groups by using a wet-type abrasive belt polishing method through 3 groups of frame grinding heads configured by a unit, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 4-pass rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller mill at a rolling pressure of 1360kN, and performing heat treatment for 5 times in an alternating manner in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
Example 3
(1) Carrying out first water washing on the strip steel, soaking the strip steel in acid liquor for acid washing after the first water washing, wherein the acid washing temperature is 70 ℃, the concentration of the acid liquor is 18%, the acid liquor and the strip steel move relatively, the acid washing speed is 80m/min, carrying out second water washing after the acid washing, and drying the strip steel after the second water washing;
(2) lubricating, namely spraying emulsion on the surface of the strip steel subjected to acid pickling in the step (1), wherein the emulsion consists of 6% of vegetable oil, emulsifier and water, so as to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 2-pass rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill at the rolling pressure of 950kN to obtain cold-rolled strip steel billets;
(4) polishing and shearing, namely selecting 3 groups by using a wet-type abrasive belt polishing method through 3 groups of frame grinding heads configured by a unit, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 4-pass rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller mill at the rolling pressure of 1430kN, and performing 4-pass heat treatment alternately in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
Example 4
(1) Carrying out first water washing on the strip steel, soaking the strip steel in acid liquor for acid washing after the first water washing, wherein the acid washing temperature is 78 ℃, the concentration of the acid liquor is 15%, the acid liquor and the strip steel move relatively, the acid washing speed is 82m/min, carrying out second water washing after the acid washing, and drying the strip steel after the second water washing;
(2) lubricating, namely spraying emulsion on the surface of the strip steel subjected to acid pickling in the step (1), wherein the emulsion consists of 7% of vegetable oil, emulsifier and water, so as to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 2-pass rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill at the rolling pressure of 980kN to obtain a cold-rolled strip steel blank;
(4) polishing and shearing, namely selecting 3 groups by using a wet-type abrasive belt polishing method through 3 groups of frame grinding heads configured by a unit, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 3-pass rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller mill at the rolling pressure of 1430kN, and performing 5-pass heat treatment in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
Example 5
(1) Carrying out first water washing on the strip steel, soaking the strip steel in acid liquor for acid washing after the first water washing, wherein the acid washing temperature is 86 ℃, the concentration of the acid liquor is 14%, the acid liquor and the strip steel move relatively, the acid washing speed is 77m/min, carrying out second water washing after the acid washing, and drying the strip steel after the second water washing;
(2) lubricating, namely spraying emulsion on the surface of the strip steel subjected to acid pickling in the step (1), wherein the emulsion consists of 7% of vegetable oil, emulsifier and water, so as to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 2-pass rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill at the rolling pressure of 1120kN to obtain cold-rolled strip steel blanks;
(4) polishing and shearing, namely selecting 3 groups by using a wet-type abrasive belt polishing method through 3 groups of frame grinding heads configured by a unit, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 4-pass rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller mill at the rolling pressure of 1440kN, and performing 5-pass heat treatment in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
In conclusion, by adopting the technical scheme, the strip steel is acidified before the roller, and some rust on the surface of the strip steel is removed, so that the quality of the strip steel is improved;
the strip steel gradually reaches the required shape by adopting a rolling gradual deformation mode, and the cold bending performance of the cold-rolled strip steel is improved by the gradual rolling of the roller, so that the structure of the cold-rolled strip steel is fine and uniform;
the roughness of the surface of the cold-rolled strip steel is reduced by polishing, so that the surface of the prepared cold-rolled strip steel is smoother, the edges of two sides of the cold-rolled strip steel are tidy by shearing, and the neatness of the cold-rolled strip steel is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A cold-rolled strip steel strength improving process is characterized by comprising the following steps: the method comprises the following steps:
(1) acid cleaning, namely soaking the strip steel in acid liquor, and enabling the acid liquor and the strip steel to move relatively to remove an oxide film on the cold-rolled strip steel;
(2) lubricating, namely spraying lubricating liquid on the surface of the strip steel subjected to acid pickling in the step (1), wherein the lubricating liquid is emulsion to obtain the lubricated strip steel;
(3) performing primary rolling, namely performing 1-2 times of rolling on the lubricating strip steel obtained in the step (2) by using a six-roller multi-roller rolling mill to obtain a cold-rolled strip steel billet;
(4) polishing and shearing, namely selecting 1-3 groups of machine frame grinding heads configured by a machine set by adopting a wet-type abrasive belt polishing method, polishing two surfaces of the cold-rolled strip steel blank obtained in the step (3) at the same time, and trimming two sides of the strip steel;
(5) performing secondary rolling, namely performing 3-6 times of rolling on the cold-rolled strip steel billet polished and trimmed in the step (4) by using a six-roller multi-roller rolling mill, and performing 4-5 times of heat treatment alternately in the rolling process to obtain a secondary cold-rolled strip steel billet;
(6) annealing, namely performing bright annealing on the secondary cold-rolled strip steel blank in the step (5) to obtain a tertiary cold-rolled strip steel blank;
(7) and (4) leveling, namely leveling the third cold-rolled strip steel blank obtained in the step (6) for 1-2 times by using a two-roller leveling machine to obtain the high-strength cold-rolled strip steel.
2. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step (1), the pickling temperature is 60-80 ℃, the concentration of the acid liquor is 10-20%, the pickling speed is 60-90m/min, the steel blank is leveled, and a two-roller leveler is used for leveling the third cold-rolled strip steel blank obtained in the step (5) for 1-2 times to obtain the high-strength cold-rolled strip steel.
3. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step (1), the strip steel is subjected to primary washing before acid washing, secondary washing after acid washing, and drying after the secondary washing.
4. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step (2), the emulsion is composed of 3-7% of vegetable oil, emulsifier and water.
5. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step (4), the type of the abrasive belt is selected to be 70-110 meshes, and the grinding speed is 8-20 m/min.
6. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step (3), the rolling pressure is 800-1200 kN.
7. The strength improvement process of the cold-rolled steel strip as claimed in claim 1, characterized by comprising the following steps of: the annealing temperature in the step (6) is 1000-1200 ℃, and the speed is 20-30 m/min.
8. The strength improvement process of the cold-rolled steel strip as claimed in claim 6, wherein the strength improvement process comprises the following steps: in the step (5), the rolling pressure is 1300-1500 kN.
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| CN202010992270.0A CN112337992A (en) | 2020-09-21 | 2020-09-21 | Cold-rolled strip steel strength improving process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202045408U (en) * | 2011-01-30 | 2011-11-23 | 宝山钢铁股份有限公司 | Stepwise side shearing device |
| CN103372567A (en) * | 2012-04-26 | 2013-10-30 | 宝山钢铁股份有限公司 | Method for producing ferritic stainless steel bands with roughened surfaces through cold continuous rolling |
| CN104975225A (en) * | 2015-07-14 | 2015-10-14 | 山东众冠钢板有限公司 | High-strength and corrosion-resistance SPHC steel plate and preparing method thereof |
| CN106283084A (en) * | 2015-05-15 | 2017-01-04 | 宝钢特钢有限公司 | A kind of multiple tube corrosion resistant alloy UNS N08825 cold-rolled strip manufacture method |
| CN109112278A (en) * | 2017-06-23 | 2019-01-01 | 宝钢特钢有限公司 | A kind of corrosion resistant alloy UNS S33400 cold-rolled strip manufacturing method, steel band and application |
| CN109332418A (en) * | 2018-09-27 | 2019-02-15 | 山西太钢不锈钢股份有限公司 | For improve 300 be stainless steel BA plate surface grade technique |
-
2020
- 2020-09-21 CN CN202010992270.0A patent/CN112337992A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202045408U (en) * | 2011-01-30 | 2011-11-23 | 宝山钢铁股份有限公司 | Stepwise side shearing device |
| CN103372567A (en) * | 2012-04-26 | 2013-10-30 | 宝山钢铁股份有限公司 | Method for producing ferritic stainless steel bands with roughened surfaces through cold continuous rolling |
| CN106283084A (en) * | 2015-05-15 | 2017-01-04 | 宝钢特钢有限公司 | A kind of multiple tube corrosion resistant alloy UNS N08825 cold-rolled strip manufacture method |
| CN104975225A (en) * | 2015-07-14 | 2015-10-14 | 山东众冠钢板有限公司 | High-strength and corrosion-resistance SPHC steel plate and preparing method thereof |
| CN109112278A (en) * | 2017-06-23 | 2019-01-01 | 宝钢特钢有限公司 | A kind of corrosion resistant alloy UNS S33400 cold-rolled strip manufacturing method, steel band and application |
| CN109332418A (en) * | 2018-09-27 | 2019-02-15 | 山西太钢不锈钢股份有限公司 | For improve 300 be stainless steel BA plate surface grade technique |
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Application publication date: 20210209 |