CN102029290A - Cold rolling method for hard stainless steel band - Google Patents
Cold rolling method for hard stainless steel band Download PDFInfo
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- CN102029290A CN102029290A CN 201010584922 CN201010584922A CN102029290A CN 102029290 A CN102029290 A CN 102029290A CN 201010584922 CN201010584922 CN 201010584922 CN 201010584922 A CN201010584922 A CN 201010584922A CN 102029290 A CN102029290 A CN 102029290A
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Abstract
The invention relates to a cold rolling method for a hard stainless steel band, which comprises the following steps: selecting a stainless steel band blank; using a four-roller finishing rolling mill unit to carry out primary rolling on a 3mm-thick stainless steel band into a 1.6mm-thick semi-finished stainless steel band, carrying out intermediate annealing and finish rolling, rolling the 1.6mm-thick semi-finished stainless steel band into a 0.8mm-thick finished stainless steel band, and cutting the finished stainless steel band to a user-required width; and finally, inspecting, packaging, and warehousing. The stainless steel band has favorable form and extremely high hardness which can be up to 400 degrees or above. By arranging the annealing procedure prior to the finish rolling procedure, the invention eliminates the internal stress generated in the primary rolling process, improves the performance quality of the finished product and meets the requirements for mechanical properties of the finished product, thereby being widely used in the high-technology fields of IT industry, submarines, aircrafts and the like.
Description
Technical field
The invention belongs to the manufacturing method of stainless steel band field, particularly relate to a kind of hard attitude 201 stainless steel band cold rolling process.
Background technology
Stainless steel market, hard attitude material is widely used in high-tech industry, IT industry and Aeronautics and Astronautics industry, the added value height, but rolling mill practice is difficult to grasp, because produce internal stress in the inner meeting of first rolling back stainless steel band, so just influenced the effect that finish rolling is come out, shaping to finished product also has considerable influence, and different finished products has strengthened the rolling mill practice difficulty so again to the requirement difference of hardness, production efficiency is low, and lumber recovery is not high.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of hard attitude 201 stainless steel band cold rolling process are provided,, reach the requirement of regulation hardness after rolling, and can guarantee the mechanical property of finished product by strict controlled rolling technology.
According to technical scheme provided by the invention, a kind of hard attitude 201 stainless steel band cold rolling process may further comprise the steps:
The first step: raw material are prepared; Selecting thickness for use is 3.0mm, and width is the 201 stainless steel band blanks of 275～600mm;
Second step: breaking down: adopt four roller finishing rolling mill units to carry out the rolling process first time, cold rolling 6～7 passages, rolling tensile force KN:6～12, rolling stainless steel band speed: 90～120 Mi ∕ minutes, 3mm is rolled into semi-finished product with the stainless steel band blank, and semi-finished product stainless steel band thickness is: 1.6mm;
The 3rd step: annealing in process: the semi-finished product stainless steel band is entered annealing furnace with 3.5～4.5 Mi ∕ minute speed, and the temperature in the annealing furnace is: 1040～1060 ℃, charge into protective gas simultaneously, and be divided into six zones and one section preheating section in the annealing furnace;
Temperature is controlled at 1000～1050 ℃ in the first area; Temperature is controlled at 1000～1050 ℃ in the second area stove; Temperature is controlled at 1070～1090 ℃ in the 3rd zone furnace; Temperature is controlled at 1070～1090 ℃ in the 4th zone furnace; Temperature is controlled at 1070～1090 ℃ in the 5th zone furnace; Come out of the stove when temperature is controlled at 1040～1060 ℃ in the 6th zone furnace and enter the cooling section cooling; The preheating section temperature is controlled at 790～830 ℃; The temperature of described cooling section remains on 40～60 ℃;
The 4th step: finish rolling: semi-finished product stainless steel band that will annealing in process is crossed through the first time adopts four roller finishing rolling mill groups to be rolled into hard attitude 201 stainless steel bands, cold rolling 3～4 passages, rolling tensile force KN:2～5, rolling stainless steel band speed: 120～180 Mi ∕ minutes; With semi-finished product stainless steel band thickness be: 1.6mm is rolled into thickness and is: 0.8mm;
The 5th step: cutting, packing, warehouse-in.
Mill speed in the described step 2 can be brought up to 120 meters/minute, has improved breaking down efficient greatly.
The intermediate heat-treatment technology of the hard attitude stainless-steel cold-rolling of the employing in the described step 3 process can improve lumber recovery 50%.
The protective gas that charges in the described step 3 adopts ammonia (N2H3) heating to resolve into 75% hydrogen and 25% nitrogen: furnace pressure is at 0.3～0.5MPa, and pressure is controlled at 0.06～0.1MPa.
Stainless steel band good plate cut of the present invention, extreme hardness, can reach more than 400 degree, arranged annealing in process in the finish rolling preceding working procedure, the internal stress that has produced when having eliminated breaking down has been improved the end properties quality, and can satisfy the requirement to the mechanical property of finished product, be widely used in IT industry, submarine, high-tech areas such as airborne vehicle.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment one:
A kind of hard attitude 201 stainless steel band cold rolling process of the present invention, it may further comprise the steps:
The first step: raw material are prepared; Selecting thickness for use is 3.0mm, and width is the 201 stainless steel band blanks of 300mm;
Second step: breaking down: adopt four roller finishing rolling mill units to carry out the rolling process first time, cold rolling 6～7 passages, rolling tensile force KN:6, the steel band mill speed: 120 Mi ∕ minutes, 3mm was rolled into semi-finished product with the stainless steel band blank, and stainless steel band thickness is: 1.6mm;
The 3rd step: annealing in process: the semi-finished product stainless steel band is entered annealing furnace with 4 Mi ∕ minute speed, and the temperature in the annealing furnace is: 1060 ℃, charge into protective gas simultaneously, and be divided into six zones and one section preheating section in the annealing furnace; Described protective gas adopts ammonia (N2H3) heating to resolve into 75% hydrogen and 25% nitrogen: furnace pressure is at 0.3MPa, and pressure is controlled at 0.06MPa.
Temperature is controlled at 1030 ℃ in the first area; Temperature is controlled at 1030 ℃ in the second area stove; Temperature is controlled at 1080 ℃ in the 3rd zone furnace; Temperature is controlled at 1080 ℃ in the 4th zone furnace; Temperature is controlled at 1080 ℃ in the 5th zone furnace; Come out of the stove when temperature is controlled at 1050 ℃ in the 6th zone furnace and enter the cooling section cooling; The preheating section temperature is controlled at 790 ℃; The temperature of described cooling section remains on 50 ℃;
The 4th step: finish rolling: semi-finished product stainless steel band that will annealing in process is crossed through the first time adopts four roller finishing rolling mill groups to be rolled into hard attitude 201 stainless steel bands, cold rolling 4 passages, rolling tensile force KN:5, steel band mill speed: 120 Mi ∕ minutes; With semi-finished product stainless steel band thickness be: 1.6mm is rolled into thickness and is: 0.8mm;
The 5th step: cutting, packing, warehouse-in.
Embodiment two:
A kind of hard attitude 201 stainless-steel cold-rolling methods of the present invention, it may further comprise the steps:
The first step: raw material are prepared; Selecting thickness for use is 3.0mm, and width is the 201 stainless steel band blanks of 375mm;
Second step: breaking down: adopt four roller finishing rolling mill units to carry out the rolling process first time, cold rolling 6～7 passages, rolling tensile force KN:7, the steel band mill speed: 120 Mi ∕ minutes, 3mm was rolled into semi-finished product with the stainless steel band blank, and stainless steel band thickness is: 1.6mm;
The 3rd step: annealing in process: the semi-finished product stainless steel band is entered annealing furnace with 4.5 Mi ∕ minute speed, and the temperature in the annealing furnace is: 1060 ℃, charge into protective gas simultaneously, and be divided into six zones and one section preheating section in the annealing furnace; Described protective gas adopts ammonia (N2H3) heating to resolve into 75% hydrogen and 25% nitrogen: furnace pressure is at 0.4 MPa, and pressure is controlled at 0.08MPa.
Temperature is controlled at 1030 ℃ in the first area; Temperature is controlled at 1030 ℃ in the second area stove; Temperature is controlled at 1090 ℃ in the 3rd zone furnace; Temperature is controlled at 1090 ℃ in the 4th zone furnace; Temperature is controlled at 1090 ℃ in the 5th zone furnace; Come out of the stove when temperature is controlled at 1050 ℃ in the 6th zone furnace and enter the cooling section cooling; The preheating section temperature is controlled at 790 ℃; The temperature of described cooling section remains on 50 ℃;
The 4th step: finish rolling: semi-finished product stainless steel band that will annealing in process is crossed through the first time adopts four roller finishing rolling mill groups to be rolled into hard attitude 201 stainless steel bands, cold rolling 4 passages, rolling tensile force KN:5, steel band mill speed: 120 Mi ∕ minutes; With semi-finished product stainless steel band thickness be: 1.6mm is rolled into thickness and is: 0.8mm;
The 5th step: cutting, packing, warehouse-in.
Embodiment three:
A kind of hard attitude 201 stainless-steel cold-rolling methods of the present invention, it may further comprise the steps:
The first step: raw material are prepared; Selecting thickness for use is 3.0mm, and width is the 201 stainless steel band blanks of 515mm;
Second step: breaking down: adopt four roller finishing rolling mill units to carry out the rolling process first time, cold rolling 6～7 passages, rolling tensile force KN:8, the steel band mill speed: 120 Mi ∕ minutes, 3mm was rolled into semi-finished product with the stainless steel band blank, and stainless steel band thickness is: 1.6mm;
The 3rd step: annealing in process: the semi-finished product stainless steel band is entered annealing furnace with 4 Mi ∕ minute speed, and the temperature in the annealing furnace is: 1060 ℃, charge into protective gas simultaneously, and be divided into six zones and one section preheating section in the annealing furnace; Described protective gas adopts ammonia (N2H3) heating to resolve into 75% hydrogen and 25% nitrogen: furnace pressure is at 0.5MPa, and pressure is controlled at 0.1MPa.
Temperature is controlled at 1030 ℃ in the first area; Temperature is controlled at 1030 ℃ in the second area stove; Temperature is controlled at 1080 ℃ in the 3rd zone furnace; Temperature is controlled at 1080 ℃ in the 4th zone furnace; Temperature is controlled at 1080 ℃ in the 5th zone furnace; Come out of the stove when temperature is controlled at 1050 ℃ in the 6th zone furnace and enter the cooling section cooling; The preheating section temperature is controlled at 790 ℃; The temperature of described cooling section remains on 50 ℃;
The 4th step: finish rolling: semi-finished product stainless steel band that will annealing in process is crossed through the first time adopts four roller finishing rolling mill groups to be rolled into hard attitude 201 stainless steel bands, cold rolling 4 passages, rolling tensile force KN:5, steel band mill speed: 120 Mi ∕ minutes; With semi-finished product stainless steel band thickness be: 1.6mm is rolled into thickness and is: 0.8mm;
The 5th step: cutting, packing, warehouse-in.
Claims (3)
1. hard attitude stainless steel band cold rolling process is characterized in that: adopt following procedure of processing:
The first step: raw material are prepared; Selecting thickness for use is 3.0mm, and width is the stainless steel band blank of 275～600mm;
Second step: breaking down: adopt four roller finishing rolling mill units to carry out the rolling process first time, cold rolling 6～7 passages, rolling tensile force KN:6～12, steel band mill speed: 90～120 Mi ∕ minutes, 3mm is rolled into semi-finished product with the stainless steel band blank, and semi-finished product stainless steel band thickness is: 1.6mm;
The 3rd step: annealing in process: the semi-finished product stainless steel band is entered annealing furnace with 3.5～4.5 Mi ∕ minute speed, and the temperature in the annealing furnace is: 1040～1060 ℃, charge into protective gas simultaneously, and be divided into six zones and one section preheating section in the annealing furnace;
Temperature is controlled at 1000～1050 ℃ in the first area; Temperature is controlled at 1000～1050 ℃ in the second area stove; Temperature is controlled at 1070～1090 ℃ in the 3rd zone furnace; Temperature is controlled at 1070～1090 ℃ in the 4th zone furnace; Temperature is controlled at 1070～1090 ℃ in the 5th zone furnace; Come out of the stove when temperature is controlled at 1040～1060 ℃ in the 6th zone furnace and enter the cooling section cooling; The preheating section temperature is controlled at 790～830 ℃; The temperature of described cooling section remains on 40～60 ℃;
The 4th step: finish rolling: will adopt four roller finishing rolling mill groups to be rolled into hard attitude stainless steel band through the semi-finished product stainless steel band that annealing in process is crossed, cold rolling 3～4 passages, rolling tensile force KN:2～5, steel band mill speed: 120～180 Mi ∕ minutes; With semi-finished product stainless steel band thickness be: 1.6mm is rolled into thickness and is: 0.8mm;
The 5th step: cutting, packing, warehouse-in.
2. a kind of hard attitude stainless steel band cold rolling process according to claim 1, it is characterized in that: described breaking down mill speed is selected 120 meters/minute for use.
3. a kind of hard attitude stainless steel band cold rolling process according to claim 1 is characterized in that: the described protective gas that charges into adopts the ammonia heating to resolve into 75% hydrogen and 25% nitrogen: furnace pressure is at 0.3～0.5MPa, and pressure is controlled at 0.06～0.1MPa.
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| CN201010584922A CN102029290B (en) | 2010-12-13 | 2010-12-13 | Cold rolling method for hard stainless steel band |
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| CN201010584922A CN102029290B (en) | 2010-12-13 | 2010-12-13 | Cold rolling method for hard stainless steel band |
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| CN102029290B CN102029290B (en) | 2012-09-05 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553914A (en) * | 2012-01-07 | 2012-07-11 | 无锡嘉联不锈钢有限公司 | Method for producing semi-hard stainless steel strips for making chains |
| CN103173594A (en) * | 2013-04-09 | 2013-06-26 | 江苏呈飞精密合金股份有限公司 | Process for performing complete stress relief annealing on cold-rolled stainless steel coil by means of continuous annealing furnace |
| CN105057993A (en) * | 2015-07-20 | 2015-11-18 | 常熟市南方不锈钢链条有限公司 | Manufacturing process for special chain for stack type refrigerator |
| CN106350646A (en) * | 2016-08-31 | 2017-01-25 | 江阴市云晟带箔有限公司 | Method for manufacturing stainless steel band for precision constant-force spring by using non-standard four-high cold rolling machine |
| CN108342555A (en) * | 2018-02-01 | 2018-07-31 | 南京理工大学 | The hard state stainless steel band production method of ultra-thin accurate |
| CN109622613A (en) * | 2018-12-18 | 2019-04-16 | 佛山市三水晨曦不锈钢有限公司 | The processing method of 201 cold rolled stainless steel bands |
| CN109628709A (en) * | 2018-12-29 | 2019-04-16 | 佛山市诚德新材料有限公司 | A kind of method for annealing of stainless steel band |
| CN109652639A (en) * | 2018-12-29 | 2019-04-19 | 佛山市诚德新材料有限公司 | A kind of annealing furnace of stainless steel band |
| CN114749486A (en) * | 2022-03-28 | 2022-07-15 | 广东鑫发精密金属科技有限公司 | Preparation method of 201 superhard precision stainless steel, stainless steel and application |
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| JPH11277123A (en) * | 1998-03-27 | 1999-10-12 | Nisshin Steel Co Ltd | Method for rolling strip metal |
| CN101244426A (en) * | 2008-02-18 | 2008-08-20 | 宁波永正精密不锈钢有限公司 | Method for producing hard condition 301 accurate stainless steel band |
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Patent Citations (4)
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| JPS5565325A (en) * | 1978-11-07 | 1980-05-16 | Kobe Steel Ltd | Manufacture of high hardness stainless steel excellent in fatigue strength |
| CN1122264A (en) * | 1994-07-07 | 1996-05-15 | 矿山机械和轧钢机械制造有限公司 | A process for the preparation of cold rolled stain less steel strips and metal strips, more particularly of titanium alloys |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553914B (en) * | 2012-01-07 | 2013-11-13 | 无锡嘉联不锈钢有限公司 | Method for producing semi-hard stainless steel strips for making chains |
| CN102553914A (en) * | 2012-01-07 | 2012-07-11 | 无锡嘉联不锈钢有限公司 | Method for producing semi-hard stainless steel strips for making chains |
| CN103173594A (en) * | 2013-04-09 | 2013-06-26 | 江苏呈飞精密合金股份有限公司 | Process for performing complete stress relief annealing on cold-rolled stainless steel coil by means of continuous annealing furnace |
| CN105057993A (en) * | 2015-07-20 | 2015-11-18 | 常熟市南方不锈钢链条有限公司 | Manufacturing process for special chain for stack type refrigerator |
| CN105057993B (en) * | 2015-07-20 | 2017-06-06 | 常熟市南方不锈钢链条有限公司 | A kind of manufacturing process of stacked refrigerator special chain |
| CN106350646B (en) * | 2016-08-31 | 2018-11-09 | 江阴市云晟带箔有限公司 | The method of the nonstandard accurate constant force clockwork spring stainless steel band of 4-roller cold rolling mill manufacture |
| CN106350646A (en) * | 2016-08-31 | 2017-01-25 | 江阴市云晟带箔有限公司 | Method for manufacturing stainless steel band for precision constant-force spring by using non-standard four-high cold rolling machine |
| CN108342555A (en) * | 2018-02-01 | 2018-07-31 | 南京理工大学 | The hard state stainless steel band production method of ultra-thin accurate |
| CN109622613A (en) * | 2018-12-18 | 2019-04-16 | 佛山市三水晨曦不锈钢有限公司 | The processing method of 201 cold rolled stainless steel bands |
| CN109628709A (en) * | 2018-12-29 | 2019-04-16 | 佛山市诚德新材料有限公司 | A kind of method for annealing of stainless steel band |
| CN109652639A (en) * | 2018-12-29 | 2019-04-19 | 佛山市诚德新材料有限公司 | A kind of annealing furnace of stainless steel band |
| CN109652639B (en) * | 2018-12-29 | 2024-02-09 | 佛山市诚德新材料有限公司 | Annealing furnace for stainless steel strip |
| CN114749486A (en) * | 2022-03-28 | 2022-07-15 | 广东鑫发精密金属科技有限公司 | Preparation method of 201 superhard precision stainless steel, stainless steel and application |
| CN114749486B (en) * | 2022-03-28 | 2023-10-03 | 广东鑫发精密金属科技有限公司 | Preparation method of 201 superhard precision stainless steel, stainless steel and application |
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| CN102029290B (en) | 2012-09-05 |
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