CN102719639A - Method for producing stainless steel strip with high hardness - Google Patents
Method for producing stainless steel strip with high hardness Download PDFInfo
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- CN102719639A CN102719639A CN2012102374630A CN201210237463A CN102719639A CN 102719639 A CN102719639 A CN 102719639A CN 2012102374630 A CN2012102374630 A CN 2012102374630A CN 201210237463 A CN201210237463 A CN 201210237463A CN 102719639 A CN102719639 A CN 102719639A
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Abstract
The invention discloses a method for producing a stainless steel strip with high hardness. The method comprises the following steps of: selecting a cold-rolled stainless steel strip billet with the thickness of 0.6-1.5mm, wherein the carbon content thereof is more than 0.1% and the hardness thereof is greater than HV190; rolling the cold-rolled stainless steel strip billet at least once by using a cold rolling mill to obtain a semi-finished or finished stainless steel strip with the thickness of 0.28-0.6mm; performing solution treatment on the semi-finished stainless steel strip; performing solution treatment on the semi-finished stainless steel strip by using a continuous bright annealing furnace; performing solution treatment on the semi-finished stainless steel strip after each rolling; by using a 12-roll or 20-roll cold rolling mill, rolling the semi-finished stainless steel strip after the solution treatment into a finished precision alloy strip with the thickness of 0.09-0.2mm; and finally, degreasing. In the method, after semi-finished product rolling, solution treatment, finished product rolling, degreasing treatment, destressing annealing treatment and the like, stainless steel products with high hardness within a thickness range of 0.09-0.6mm can be produced; and in the respect of performances, besides the hardness of HV550, special requirements on toughness, elasticity and the like also can be met.
Description
Technical field
The present invention relates to a kind of working method of Stainless Steel Band, more precisely, relate to a kind of production technique that is processed into the high-hardness stainless steel band, be applicable to the Stainless Steel Band of high firmness products such as processed springs, shell fragment.
Background technology
To the hard attitude SUS301 Stainless Steel Band below traditional HV530; Be adopt successively that work in-process are rolling, step such as process annealing, finished product are cold rolling and processing; But adopt such material and method to want the above hard attitude steel band of production hardness HV550, even the controlled deformation amount also is impossible more than 70%.Its subject matter shows the following aspects:
One, the carbon content of traditional SUS301 has only 0.03%～0.06%, and the hardenability value of material own is not high, great deflection no matter, and hardness is the highest also can only to be reached about HV530, no matter how to increase deflection, and its hardness can not raise yet again.
Two, the band that production hardness is higher; Deflection will be controlled at more than 65%, and the milling train sh is produced the loss that can aggravate milling train back lining bearing and roll, and the probability that produces mass defects such as aberration, bearing seal also can increase greatly; Cause product surface defective, production cost is also very high in addition.
Summary of the invention
The present invention provides a kind of working method of high-hardness stainless steel band in order to solve the problem that exists in the prior art.The Stainless Steel Band that adopts this method to produce, hardness can reach HV550～600, the toughness of products of production, good springiness, the life-span is long.
For realizing above-mentioned purpose, technical scheme of the present invention is: a kind of working method of high-hardness stainless steel band may further comprise the steps successively:
That (1) gets the raw materials ready selects for use, and selecting thickness for use is the stainless steel cold-rolled steel band blank of 0.6～1.5mm, and its carbon content is more than 0.1%, and blank hardness is greater than HV190, and is for use;
(2) work in-process are rolling, adopt cold rolling unit, and the stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolling through at least once; The stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolled into the semifinished or finished goods Stainless Steel Band that thickness is 0.28～0.6mm, the thickness deviation of this semifinished or finished goods Stainless Steel Band is ± 0.008mm～± 0.015mm;
(3), then enter into step (5) and handle if what obtain in the step (2) is the finished product Stainless Steel Band; If what obtain in the step (2) is the work in-process Stainless Steel Bands, then carry out solution treatment, the work in-process Stainless Steel Band is carried out solution treatment through continuous bright annealing furnace, and the work in-process Stainless Steel Band after rolling each time all carries out solution treatment;
(4) finished product is rolling, adopts 12 rollers or 20 cold mill groups, adopts cold rolling unit, and it is the finished product Precise Alloy band of 0.09～0.2mm that the work in-process rolling stainless steel band that will pass through solution treatment becomes thickness;
(5) skimming treatment is cleaned finished product Precise Alloy band with clean-out system, removes the grease of finished product stainless steel band surface.
Preferably, the cold rolling unit in the said step (2) adopts ten two-roll cold rolling mill groups, and parameter is provided with as follows: the rolling load of 50～200t and the rolling tensile force of 2～12t, roll speed are 50～250m/min, 20～42 ℃ of ROLLING OIL temperature.
Preferably, what solution treatment was adopted in the said step (3) is bright continuous annealing furnace, makes the work in-process Stainless Steel Band pass through said lehre with the speed of 4～12m/min; The lehre temperature is heated to 1000～1100 ℃, and the work in-process Stainless Steel Band in the lehre is filled shielding gas, and the tapping temperature that makes the work in-process Stainless Steel Band is between 80 ℃～ambient temperature value.
Preferably; In the said step (4); Be under the rolling tensile force of the rolling load of 50～200t and 2～12t; With the roll speed of 50～200m/min, will through the work in-process rolling stainless steel band of solution treatment the finished product Stainless Steel Band, the thickness deviation of this finished product Stainless Steel Band is ± 0.005mm～± 0.008mm.
Preferably, said step (5) comprises also that afterwards tension Annealing handles, with finished product steel belt through continuous tension Annealing stove; Temperature is between 300 ℃～500 ℃; Speed control is filled shielding gas at 5～20m/min to the finished product Stainless Steel Band, and unit tension is controlled at 3～10kg/mm
2Between.
Working method of the present invention is with the stainless steel cold-rolled steel band blank of thickness at 0.6～1.5mm;, skimming treatment rolling and stress relief annealing treatment and other steps through rolling, the solution treatment of work in-process, finished product; Can produce the high-hardness stainless steel product of thickness range between 0.09～0.6mm; Aspect of performance also can satisfy requirements such as special toughness, elasticity except hardness can reach more than the HV550.
In the working method of the present invention, employing be 12 rollers or 20 roller mills, working width below 400mm, so thickness deviation can be controlled in ± 0.005mm～± 0.01mm, thereby improved the thickness of product precision greatly, satisfy the demand of high-end customer.
In the working method of the present invention, rationally control technologies such as pass deformation, oil temperature, roll speed, can under the prerequisite of equal deflection, improve HV30 ~ 80, can also reduce the loss of milling train back lining bearing simultaneously, thereby reduce production costs than traditional material.
In the working method of the present invention, adopt the SUS301 former blank of carbon content, in the work-ing life that can improve Stainless Steel Band greatly, satisfy the test index of terminal client anti-fatigue performance greater than 0.1% composition.
In the working method of the present invention, adopt bright continuous annealing furnace, its protective atmosphere is the decomposed ammonia body, contains 75% pure hydrogen, and 25% nitrogen is compared the pure hydrogen shielding gas with other producer, and production cost is low.
In the working method of the present invention, adopt continuous tension Annealing stove, can effectively eliminate the unrelieved stress of material internal, increase surface hardness, toughness and the elasticity of material, be more suitable for being used for spring, elastic component series products.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is done further explanation, if there is not specified otherwise, the starting material that the present invention adopted, equipment all can buy on market.
The working method of a kind of high-hardness stainless steel band provided by the invention may further comprise the steps successively:
That (1) gets the raw materials ready selects for use
Selecting thickness for use is the stainless steel cold-rolled steel band blank (SUS301) of 0.6～1.5mm, and its carbon content is more than 0.1%, and blank hardness is greater than HV190, and is for use;
(2) work in-process are rolling, adopt cold rolling unit, and the stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolling through at least once; The stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolled into the semifinished or finished goods Stainless Steel Band that thickness is 0.28～0.6mm, the thickness deviation of this semifinished or finished goods Stainless Steel Band is ± 0.008mm～± 0.015mm;
(3), then enter into step (5) and handle if what obtain in the step (2) is the finished product Stainless Steel Band; If what obtain in the step (2) is the work in-process Stainless Steel Bands, then carry out solution treatment, the work in-process Stainless Steel Band is carried out solution treatment through continuous bright annealing furnace, and the work in-process Stainless Steel Band after rolling each time all carries out solution treatment; Preferably, what solution treatment was adopted is bright continuous annealing furnace, makes the work in-process Stainless Steel Band pass through said lehre with the speed of 4～12m/min; The lehre temperature is heated to 1000～1100 ℃, and the work in-process Stainless Steel Band in the lehre is filled shielding gas, and the tapping temperature that makes the work in-process Stainless Steel Band is between 80 ℃～ambient temperature value.
(4) finished product is rolling
Adopt 12 rollers or 20 roller precise cold milling train groups; Preferably under the rolling tensile force of the rolling load of 50～200t and 2～12t; Roll speed with 50～200m/min; To become thickness through the work in-process rolling stainless steel band of solution treatment is the finished product Stainless Steel Band of 0.09～0.2mm, the thickness deviation of this finished product Stainless Steel Band is ± and 0.005mm～± 0.008mm;
(5) skimming treatment
The use temperature is that 60～80 ℃ clean-out system cleans the finished product Stainless Steel Band, removes the grease of finished product stainless steel band surface;
(6) tension Annealing is handled continuously
In case of necessity, through continuous tension Annealing stove, temperature is between 300 ℃～500 ℃ with the finished product Stainless Steel Band, and speed control is filled shielding gas at 5～20m/min to finished product steel belt, and unit tension is controlled at 3～10kg/mm
2Between, purpose is effectively to eliminate the inner stress of finished product steel belt, increases surface hardness, toughness and the elasticity of material, is more suitable for being used for spring, elastic component series products.
Take such scheme, have the following advantages:
The present invention is with the stainless steel cold-rolled steel band blank of thickness at 0.6～1.5mm;, skimming treatment rolling and stress relief annealing treatment and other steps through rolling, the solution treatment of work in-process, finished product; Can produce the high-hardness stainless steel product of thickness range between 0.09～0.6mm; Aspect of performance also can satisfy requirements such as special toughness, elasticity except hardness can reach more than the HV550.
In the working method of the present invention, employing be 12 rollers or 20 roller mills, working width below 400mm, so thickness deviation can be controlled in ± 0.005mm～± 0.01mm, thereby improved the thickness of product precision greatly, satisfy the demand of high-end customer.
In the working method of the present invention, rationally control technologies such as pass deformation, oil temperature, roll speed, can under the prerequisite of equal deflection, improve HV30 ~ 80, can also reduce the loss of milling train back lining bearing simultaneously, thereby reduce production costs than traditional material.
In the working method of the present invention, adopt the SUS301 former blank of carbon content, in the work-ing life that can improve Stainless Steel Band greatly, satisfy the test index of terminal client anti-fatigue performance greater than 0.1% composition.
In the working method of the present invention, adopt bright continuous annealing furnace, its protective atmosphere is the decomposed ammonia body, contains 75% pure hydrogen, and 25% nitrogen is compared the pure hydrogen shielding gas with other producer, and production cost is low.
In the working method of the present invention, adopt continuous tension Annealing stove, can effectively eliminate the unrelieved stress of material internal, increase surface hardness, toughness and the elasticity of material, be more suitable for being used for spring, elastic component series products.
Embodiment 1
Get the raw materials ready earlier, selecting thickness for use is that the SUS301 stainless steel cold-rolled steel band blank of 1.5mm is for use.
Then, rolling through finished product.Adopt 12 roller precise cold milling trains; Under the rolling tensile force of the rolling load of 150t and 6t; Roll speed with 80m/min; The ROLLING OIL temperature control is at 36 ℃, and the stainless steel cold-rolled steel band blank that 1.5mm is thick is rolled into the finished product stainless steel belt of thickness 0.5mm, and the thickness deviation of this finished product stainless steel belt is ± 0.015mm.
Afterwards, carry out skimming treatment.The use temperature is that 60 ℃ clean-out system NS-100 cleans the rolling finished product Stainless Steel Band of process, removes the grease of finished product stainless steel band surface.Its rinse bath temperature is 60 ℃; Make through in the cold rolling clean-out system of finished product Stainless Steel Band from rinse bath with the speed of 40m/min and to pass through; Get into drying baker afterwards; The residual scavenging solution on surface is got rid of, finally made finished product stainless steel band surface light, can obtain the stainless steel product of HV550 ~ 560.
Embodiment 2
Get the raw materials ready earlier, selecting thickness for use is that the SUS301 stainless steel cold-rolled steel band blank of 1.2mm is for use.
Then, rolling through finished product.Adopt 12 roller precise cold milling trains; Under the rolling tensile force of the rolling load of 160t and 6.5t; Roll speed with 80m/min; The ROLLING OIL temperature control is at 36 ℃, and the stainless steel cold-rolled steel band blank of 1.2mm is rolled into the finished product stainless steel belt of thickness 0.4mm, and the thickness deviation of this finished product stainless steel belt is ± 0.01mm.
Afterwards, carry out skimming treatment.The use temperature is that 60 ℃ clean-out system NS-100 cleans the rolling finished product Stainless Steel Band of process, removes the grease of finished product stainless steel band surface.Make through in the cold rolling clean-out system of finished product Stainless Steel Band from rinse bath with the speed of 40m/min and to pass through, get into drying baker afterwards, the residual scavenging solution on surface is got rid of, finally make finished product stainless steel band surface light.
Again, carry out continuous tension Annealing and handle.With the annealed stove of finished product steel belt, speed is 5.5m/min, and temperature is 400 ℃ in the stove, and the unit tension coefficient is 4kg/mm
2, to feeding the decomposed ammonia body in the stove, eliminate the inner stress of finished product steel belt, can obtain the stainless steel product of HV550 ~ 570.
Embodiment 3
Get the raw materials ready earlier, select for use thickness to be the SUS301 stainless steel cold-rolled steel band blank of 0.6mm, for use.
Then, it is rolling to carry out work in-process.Adopt 12 roller precise cold milling train groups; Under the rolling tensile force of the rolling load of 100t and 3t; Roll speed with 150m/min; The ROLLING OIL temperature control is at 40 ℃, and the stainless steel cold-rolled steel band blank of 0.6mm is rolled into the work in-process stainless steel belt of thickness 0.28mm, and the thickness deviation of this finished product stainless steel belt is ± 0.008mm.
Afterwards, carry out skimming treatment.The use temperature is that 60 ℃ clean-out system cleans the rolling work in-process Stainless Steel Band of process, removes the grease of finished product stainless steel band surface.Make through in the cold rolling clean-out system of finished product Stainless Steel Band from rinse bath with the speed of 60m/min and to pass through, get into drying baker afterwards, the residual scavenging solution on surface is got rid of, finally make finished product stainless steel band surface light.
Afterwards, carry out solution treatment.Adopt continuous bright annealing furnace; The work in-process Stainless Steel Band is passed through from stove with the speed of 10m/min; And in stove, the work in-process Stainless Steel Band is charged into ammonia decomposing protection gas, and carry out quick water-cooled and air-cooled afterwards, tapping temperature is controlled at below 80 ℃.The work in-process Stainless Steel Band is charged into shielding gas, can guarantee the steel strip surface non-oxidizing bright.
Afterwards, rolling through finished product.Adopt 20 roller precise cold milling trains; Under the rolling tensile force of the rolling load of 130t and 2t; Roll speed with 120m/min; The ROLLING OIL temperature control is at 40 ℃, and the stainless steel cold-rolled steel band blank that 0.28mm is thick is rolled into the finished product stainless steel belt of thickness 0.09mm, and the thickness deviation of this finished product stainless steel belt is ± 0.005mm.
Afterwards, carry out skimming treatment again.The use temperature is that 60 ℃ clean-out system cleans the rolling finished product Stainless Steel Band of process, removes the grease of finished product stainless steel band surface.Make through in the cold rolling clean-out system of finished product Stainless Steel Band from rinse bath with the speed of 40m/min and to pass through, get into drying baker afterwards, the residual scavenging solution on surface is got rid of, finally make finished product stainless steel band surface light.
Again, carry out continuous tension Annealing and handle.With the annealed stove of finished product steel belt, speed is 25m/min, and temperature is 300 ℃ in the stove, and the unit tension coefficient is 5kg/mm
2, to feeding the decomposed ammonia body in the stove, eliminate the inner stress of finished product steel belt, can obtain the stainless steel product of HV560 ~ 600.
Being merely preferred embodiment of the present invention in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all should belong to technological category of the present invention.
Claims (5)
1. the working method of a high-hardness stainless steel band is characterized in that: may further comprise the steps successively:
That (1) gets the raw materials ready selects for use, and selecting thickness for use is the stainless steel cold-rolled steel band blank of 0.6～1.5mm, and its carbon content is more than 0.1%, and blank hardness is greater than HV190, and is for use;
(2) work in-process are rolling, adopt cold rolling unit, and the stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolling through at least once; The stainless steel cold-rolled steel band blank of 0.6～1.5mm is rolled into the semifinished or finished goods Stainless Steel Band that thickness is 0.28～0.6mm, the thickness deviation of this semifinished or finished goods Stainless Steel Band is ± 0.008mm～± 0.015mm;
(3), then enter into step (5) and handle if what obtain in the step (2) is the finished product Stainless Steel Band; If what obtain in the step (2) is the work in-process Stainless Steel Bands, then carry out solution treatment, the work in-process Stainless Steel Band is carried out solution treatment through continuous bright annealing furnace, and the work in-process Stainless Steel Band after rolling each time all carries out solution treatment;
(4) finished product is rolling, adopts 12 rollers or 20 cold mill groups, adopts cold rolling unit, and it is the finished product Precise Alloy band of 0.09～0.2mm that the work in-process rolling stainless steel band that will pass through solution treatment becomes thickness;
(5) skimming treatment is cleaned finished product Precise Alloy band with clean-out system, removes the grease of finished product stainless steel band surface.
2. working method according to claim 1; It is characterized in that: the cold rolling unit in the said step (2) adopts ten two-roll cold rolling mill groups; Parameter is provided with as follows: the rolling load of 50～200t and the rolling tensile force of 2～12t, roll speed are 50～250m/min, 20～42 ℃ of ROLLING OIL temperature.
3. working method according to claim 1 is characterized in that: what solution treatment was adopted in the said step (3) is bright continuous annealing furnace, makes the work in-process Stainless Steel Band pass through said lehre with the speed of 4～12m/min; The lehre temperature is heated to 1000～1100 ℃, and the work in-process Stainless Steel Band in the lehre is filled shielding gas, and the tapping temperature that makes the work in-process Stainless Steel Band is between 80 ℃～ambient temperature value.
4. working method according to claim 1; It is characterized in that: in the said step (4); Be under the rolling tensile force of the rolling load of 50～200t and 2～12t; With the roll speed of 50～200m/min, will through the work in-process rolling stainless steel band of solution treatment the finished product Stainless Steel Band, the thickness deviation of this finished product Stainless Steel Band is ± 0.005mm～± 0.008mm.
5. working method according to claim 1; It is characterized in that: said step (5) also comprises the tension Annealing processing afterwards; Through continuous tension Annealing stove, temperature is between 300 ℃～500 ℃ with finished product steel belt, and speed control is at 5～20m/min; The finished product Stainless Steel Band is filled shielding gas, and unit tension is controlled at 3～10kg/mm
2Between.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103484639A (en) * | 2013-09-11 | 2014-01-01 | 山东能源机械集团乾元不锈钢制造有限公司 | Production technology of cold-rolled hard stainless steel bands |
| CN106319193A (en) * | 2016-09-30 | 2017-01-11 | 永鑫精密材料（无锡）有限公司 | Low-temperature distressing thermal treatment process for precise cold-rolled extremely-thin stainless steel strip |
| CN107058707A (en) * | 2017-04-11 | 2017-08-18 | 无锡华生精密材料股份有限公司 | A kind of production method of bright titaniferous stainless steel band |
| CN107083519A (en) * | 2017-02-22 | 2017-08-22 | 广东鑫发精密金属科技有限公司 | A kind of stainless-steel cold-rolling precision spring steel band and preparation method thereof |
| CN109055673A (en) * | 2018-08-27 | 2018-12-21 | 山西太钢不锈钢精密带钢有限公司 | Metal dome precision stainless steel strip production technology |
| CN111203693A (en) * | 2020-01-20 | 2020-05-29 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN113073265A (en) * | 2021-03-25 | 2021-07-06 | 广东鑫发精密金属科技有限公司 | 301 superhard precision stainless steel with greatly improved strength and service life and application thereof |
| CN115701840A (en) * | 2022-12-10 | 2023-02-14 | 南京鑫雯材料科技有限公司 | Production process of 201 stainless steel band for producing warm edge strips |
| CN116441312A (en) * | 2023-04-14 | 2023-07-18 | 江苏贯森新材料科技有限公司 | Production process of cold-rolled hard stainless steel strip |
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| CN103484639A (en) * | 2013-09-11 | 2014-01-01 | 山东能源机械集团乾元不锈钢制造有限公司 | Production technology of cold-rolled hard stainless steel bands |
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| CN106319193B (en) * | 2016-09-30 | 2018-07-06 | 永鑫精密材料（无锡）有限公司 | The very thin stainless steel band low temperature destressing heat treatment technique of precision cold-rolled |
| CN107083519A (en) * | 2017-02-22 | 2017-08-22 | 广东鑫发精密金属科技有限公司 | A kind of stainless-steel cold-rolling precision spring steel band and preparation method thereof |
| CN107058707A (en) * | 2017-04-11 | 2017-08-18 | 无锡华生精密材料股份有限公司 | A kind of production method of bright titaniferous stainless steel band |
| CN109055673A (en) * | 2018-08-27 | 2018-12-21 | 山西太钢不锈钢精密带钢有限公司 | Metal dome precision stainless steel strip production technology |
| CN109055673B (en) * | 2018-08-27 | 2019-10-29 | 山西太钢不锈钢精密带钢有限公司 | Metal dome precision stainless steel strip production technology |
| CN111203693A (en) * | 2020-01-20 | 2020-05-29 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN111203693B (en) * | 2020-01-20 | 2021-09-14 | 湖南泰嘉新材料科技股份有限公司 | Manufacturing process and production line of bimetal composite steel strip |
| CN113073265A (en) * | 2021-03-25 | 2021-07-06 | 广东鑫发精密金属科技有限公司 | 301 superhard precision stainless steel with greatly improved strength and service life and application thereof |
| CN115701840A (en) * | 2022-12-10 | 2023-02-14 | 南京鑫雯材料科技有限公司 | Production process of 201 stainless steel band for producing warm edge strips |
| CN116441312A (en) * | 2023-04-14 | 2023-07-18 | 江苏贯森新材料科技有限公司 | Production process of cold-rolled hard stainless steel strip |
| CN116441312B (en) * | 2023-04-14 | 2023-11-10 | 江苏贯森新材料科技有限公司 | Production process of cold-rolled hard stainless steel strip |
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Application publication date: 20121010 |