CN102179424B - Flattening production process of stainless steel - Google Patents
Flattening production process of stainless steel Download PDFInfo
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- CN102179424B CN102179424B CN 201110051176 CN201110051176A CN102179424B CN 102179424 B CN102179424 B CN 102179424B CN 201110051176 CN201110051176 CN 201110051176 CN 201110051176 A CN201110051176 A CN 201110051176A CN 102179424 B CN102179424 B CN 102179424B
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Abstract
The invention relates to a flattening production process of stainless steel, comprising an operation process and operation procedures, wherein the operation process comprises the following steps: a crown block lifts a steel coil to a saddle of a walking beam; the walking beam conveys the steel coil to a saddle; a coiling trolley conveys the steel coil to a preparation station; a shearing machine cuts the head of a steel strip; the coiling trolley conveys and measures the steel coil; the steel coil is automatically centered and loaded to an uncoiler through the coiling trolley; the head of the steel coil is opened through a guide plate scraper knife, and the steel strip is conveyed into a flattening machine through an inlet pinch roll and a straightener; the steel strip is continuously conveyed to a winding drum of a tension coiler so as to complete a head strip penetration process; strip steel is flattened when accelerated to process speed; after the flattening is completed, a coil stripper trolley strips the steel coil from the tension coiler; the coil stripper trolley conveys the steel coil to the saddle of the walking beam; the walking beam conveys the steel coil, meanwhile, the steel coil is respectively weighed, bundled and subjected to number spraying and the steel coil is lifted into a storeroom through the crown block. By means of the flattening production process provided by the invention, the production efficiency is increased from 3 coils/hour to 5.1 coils/hour and the finished product rate is increased from 90 percent to 99.8 percent.
Description
Technical field
The invention belongs to the Stainless Steel Production technology field, be mainly used in the T4003 stainless steel, be specifically related to a kind of stainless smooth production technology.
Background technology
T4003 stainless steel steel after the hot-roll annealing is " soft "; The surface iron scale is more relatively; Belt steel surface is easy to generate blemish such as wiping the scar load mould when carrying out smooth operation, even produces waste product, and this problem is perplexing the production of smooth unit always; Not only have a strong impact on the production efficiency of smooth unit, and reduced the lumber recovery of this type of stainless steel.
Summary of the invention
The objective of the invention is that the smooth production efficiency of T4003 is low in order to solve, belt steel surface is easy to generate defect problems such as wiping scar, scuffing, load mould,
The present invention includes work flow, job step; It is characterized in that work flow is day handlebar coil of strip handling to inlet step rate saddle seat---step rate transports coil of strip (coil of strip is axially vertical with the direction of motion) to a last saddle seat---on roll up dolly and be transported to coil of strip and prepare the station---excise the steel band head---on roll up dolly transport coil of strip and measure coil of strip diameter and width---coil of strip automatic centering by the cutter of preparing the station; And being mounted to uncoiler by last volume dolly---the coil of strip head is opened by the entrance guide plate perching knife; Through entrance pinch roll and straightener steel band is sent into planisher---continue to send and take tension reel to; Accomplish the head crossing process---the band steel accelerates to process speed and carries out smooth---the smooth back of accomplishing is unloaded volume by coil stripping car from pull reel---coil stripping car is transported to coil of strip on first saddle of 1# outlet step rate---exports step rate by 1#, 2#, 3# and transports coil of strip, during accomplish successively that the weighing of coil of strip, bundling, spray number---overhead traveling crane hangs and is involved in the storehouse;
Job step is:
The first step: passage is produced in inspection, confirms that all roller turn of planisher are flexible, and roll surface is bright and clean, and rebound is lower than lower roll surface and does not have distortion;
Second step: confirm supplied materials information during material loading, produce that what wide difference was less than or equal to 50mm can intersect the material loading operation, carry out the crop processing preparing station, guarantee that coil of strip can go up on the reel of uncoiler according to the narrow order in earlier wide back;
The 3rd step: after coil of strip gets into reel smoothly, depress " pressure head roller " and confirm coil of strip in the center of reel, internally the coil of strip of pine is tightly rolled up processing through the reel rotation earlier;
The 4th step: drop into earlier during the smooth first volume " wiping the roller device up and down ", wiping is roll surface up and down, and after finishing using, " wiping the roller device " mode selects " manually " to stop to drop into " dust pelletizing system " and the CPC function that enters the mouth simultaneously;
The 5th step: wear when band, head is promptly depressed the aligning roll gap after crossing 1.5 meters of smoothing rolls, and smooth working roll roll gap must be lifted to more than the 48mm; After treating that head gets into coiling machine " jaw " interlock; Slowly twine two circles, static pressure bottom working roll roll gap starts unit and observes surface quality with the low cruise of 15m/min; The sky of wearing band is crossed total length (surpass smooth working roll after length) and is not more than 20 meters, and " jaw " is wanted the disposable clamping that align to coiler mandrel;
The 6th step: carry out presetting of flattening technological parameter after band is worn in completion, string roller step pitch is carried out according to the 20mm/ volume, and cycling start low speed is smooth then,
The 7th step: on the one hand the upper and lower surfaces quality is checked in the low speed formation process, according to coming flitch shape condition adjustment flattening technological parameter, confirmed that up-to-standard after-acceleration is smooth on the other hand.
The 8th step: carry out by control automatically when tail is thrown in smooth end, forbid the empty mistake of any type of afterbody, unload volume automatically and accomplish weigh packing and spray number automatically by coil stripping car.
The present invention is through over the past half year practice, and effect is remarkable, and belt steel surface is wiped defect problem such as scar load mould and stopped basically, production efficiency by 3 volumes/hour bring up to, 5.1 volumes/hour, lumber recovery is by bringing up to 99.8% less than 90%.
Table 1 is a flattening technological parameter table of the present invention.
Table 1:
The specific embodiment:
What present embodiment was smooth is the T4003 stainless steel, and wide 1130mm, thickness are 3.0 mm.
The first step: at first smooth unit is carried out the inspection and the affirmation of passage based on following equipment flowsheet, require each roller to rotate flexible, any surface finish, each rebound is lower than belt steel surface, does not have distortion.
Second goes on foot: confirm during material loading that supplied materials information comprises steel, specification, carry out crop at the preparation station and handle, guarantee that coil of strip can be smooth and easy upward to reel of uncoiler.
The 3rd step: after coil of strip gets into reel smoothly, depress " pressure head roller " and confirm coil of strip in the center of reel, internally the coil of strip of pine is tightly rolled up processing through the reel rotation earlier.
The 4th step: drop into earlier during the smooth first volume " wiping the roller device up and down ", wiping is roll surface (circulation) up and down.After finishing using, " wiping the roller device " mode selects " manually " to stop to drop into " dust pelletizing system " and inlet CPC function simultaneously.
The 5th step: when wearing band; Head is promptly depressed the aligning roll gap after crossing 1.5 meters of smoothing rolls; Smooth working roll roll gap must be lifted to more than the 48mm, treat that head gets into coiling machine " jaw " interlock after, slowly twine two circles; Static pressure bottom working roll roll gap starts unit and observes surface quality with the 15m/min low cruise.The sky of wearing band is crossed total length (surpass smooth working roll after length) must not be greater than 20 meters, and " jaw " is wanted the disposable clamping that align to coiler mandrel.
The 6th step: accomplish and to carry out presetting of flattening technological parameter after wearing band, even tension is transferred big, inlet tension force to 1.0 kilogram/millimeter
2, outlet tension force to 3.0 kilogram/millimeter
2, 200 tons of temper pressures, unit speed 30 m/min, straightener roll gap be respectively-8 ,-9 ,-10,, string roller step pitch 20mm/ volume, cycling start low speed is smooth.
The 7th goes on foot: inspection band steel upper and lower surfaces quality, observe smooth back plate shape condition simultaneously, and then adjust unit speed to 120 m/min as if up-to-standard according to speed control curve, carry out smooth.
If the surface is found in inspection defectives such as the scar of wiping scuffing are arranged, the reason that then will search problem is also got rid of; If there is shape wave in belt plate shape, then mainly reach good profile through adjustment temper pressure and bending roller force etc. till.
The 8th step: smooth end is unloaded volume automatically by coil stripping car and is automatically accomplished weigh packing and spray number.
The points for attention explanation:
No matter 1 which kind of specification meets afterbody bilateral when wave, be decelerated to below the 30m/min, add tension force simultaneously, depressing dark roller, to reduce wave high.Forbid shape wave to pat the aligning roll surface for a long time.
No matter 2 which kind of specification meet monolateral wave of afterbody or cutter when curved, be decelerated to 15m/min, add tension force simultaneously, depressing dark roller, to reduce wave high.Forbid shape wave to pat the aligning roll surface for a long time.Meet elongated monolateral when wave, smooth unit maximum speed must not surpass 50 m/min.
3, the master control personnel pay close attention to the shape of plate end to end of band steel, in time adjust roll-force and bending roller force.To shift to an earlier date reduction of speed when meeting the deterioration of fluctuation of service state or plate shape, add and open.No matter raising speed and reduction of speed all the phenomenon of going straight up to or land vertically must not occur, avoid producing the scar problem of wiping.
4, for guaranteeing exit plate shape, the belt steel flating pressure of width below 1250mm is dynamically the highest to transfer to 250 tons; The belt steel flating pressure of width more than 1250mm is dynamically the highest to transfer to 300 tons.
5, smooth unit uncoiling tension and coiling tension master control operating personnel can adjust according to on-site actual situations ± 0.1 kg/mm2 scope.
Claims (1)
1. stainless smooth production technology; Comprise work flow, job step; It is characterized in that work flow is day handlebar coil of strip handling to inlet step rate saddle seat---step rate is transported to last saddle seat to coil of strip---on roll up dolly and be transported to coil of strip and prepare the station---by the cutter excision steel band head of preparing the station---on roll up dolly transportation coil of strip and measure coil of strip diameter and width---coil of strip automatic centering; And being mounted to uncoiler by last volume dolly---the coil of strip head is opened by the entrance guide plate perching knife; Through entrance pinch roll and straightener steel band is sent into planisher---continue to send and take tension reel to; Accomplish the head crossing process---the band steel accelerates to process speed and carries out smooth---the smooth back of accomplishing is unloaded volume by coil stripping car from pull reel---coil stripping car is transported to coil of strip on first saddle of 1# outlet step rate---exports step rate by 1#, 2#, 3# and transports coil of strip, during accomplish successively that the weighing of coil of strip, bundling, spray number---overhead traveling crane hangs and is involved in the storehouse;
Job step is:
The first step: passage is produced in inspection, confirms that all roller turn of planisher are flexible, and roll surface is bright and clean, and rebound is lower than lower roll surface and does not have distortion;
Second step: confirm supplied materials information during material loading, produce that width is less than or equal to 50mm and intersects the material loading operation, carry out the crop processing preparing station, guarantee that coil of strip can go up on the reel of uncoiler according to the narrow order in earlier wide back;
The 3rd step: after coil of strip gets into reel smoothly, depress " pressure head roller " and confirm coil of strip in the center of reel, internally the coil of strip of pine is tightly rolled up processing through the reel rotation earlier;
The 4th step: drop into earlier during the smooth first volume " wiping the roller device up and down ", wiping is roll surface up and down, and after finishing using, " wiping the roller device " mode selects " manually " to stop to drop into " dust pelletizing system " and the CPC function that enters the mouth simultaneously;
The 5th step: wear when band, head is promptly depressed the aligning roll gap after crossing 1.5 meters of smoothing rolls, and smooth working roll roll gap must be lifted to more than the 48mm; After treating that head gets into coiling machine " jaw " interlock; Slowly twine two circles, static pressure bottom working roll roll gap starts unit and observes surface quality with the low cruise of 15m/min; The sky of wearing band is crossed total length and is not more than 20 meters, and coiler mandrel " jaw " is wanted the disposable clamping that align;
The 6th step: carry out presetting of flattening technological parameter after band is worn in completion, string roller step pitch is carried out according to the 20mm/ volume, and cycling start low speed is smooth then,
The 7th step: on the one hand the upper and lower surfaces quality is checked in the low speed formation process, according to coming flitch shape condition adjustment flattening technological parameter, confirmed that up-to-standard after-acceleration is smooth on the other hand;
The 8th step: carry out by control automatically when tail is thrown in smooth end, forbid the empty mistake of any type of afterbody, unload volume automatically and accomplish weigh packing and spray number automatically by coil stripping car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051176 CN102179424B (en) | 2011-03-03 | 2011-03-03 | Flattening production process of stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110051176 CN102179424B (en) | 2011-03-03 | 2011-03-03 | Flattening production process of stainless steel |
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| CN102179424A CN102179424A (en) | 2011-09-14 |
| CN102179424B true CN102179424B (en) | 2012-12-05 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688886B (en) * | 2012-05-25 | 2014-04-16 | 山西太钢不锈钢股份有限公司 | Method for leveling Cr stainless steel |
| CN102806250B (en) * | 2012-08-02 | 2014-07-30 | 山西太钢不锈钢股份有限公司 | Method for flatting stainless steel strips |
| CN104826873B (en) * | 2014-02-12 | 2016-09-14 | 上海梅山钢铁股份有限公司 | Tandem mills starts the control method regardless of rouleau |
| CN103949498B (en) * | 2014-04-17 | 2016-02-10 | 山西太钢不锈钢股份有限公司 | A kind of skin pass mill group plate shape On-line Measuring Method |
| CN103949714B (en) * | 2014-04-24 | 2016-03-30 | 山西太钢不锈钢股份有限公司 | The straight sword method for cutting edge of Ni stainless steel |
| CN104128391B (en) * | 2014-06-16 | 2016-05-18 | 北京首钢股份有限公司 | Prevent from producing in planisher formation process with steel the method and the device that scratch defect |
| CN104816134A (en) * | 2015-05-05 | 2015-08-05 | 福州宝井钢材有限公司 | Car steel belt ultra-wide plate production and processing method |
| CN106269921B (en) * | 2016-08-15 | 2018-09-28 | 山东亚盛重工股份有限公司 | A kind of uncoiling, pinches all-in-one machine at centering |
| CN106424157B (en) * | 2016-11-18 | 2018-09-18 | 首钢京唐钢铁联合有限责任公司 | A kind of control method and device for preventing planisher working roll from scratching |
| CN106623448A (en) * | 2017-02-22 | 2017-05-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing scratches of working roll |
| CN107891074B (en) * | 2017-12-14 | 2019-02-22 | 江苏甬金金属科技有限公司 | A kind of flattening process of ultra-wide ultra-thin stainless steel band |
| CN109647933A (en) * | 2018-11-28 | 2019-04-19 | 山西太钢不锈钢股份有限公司 | One kind tightly rolling up operating method for smooth Q450NQR1 weathering steel |
| CN111459114B (en) * | 2020-04-17 | 2023-07-21 | 首钢京唐钢铁联合有限责任公司 | Method and device for feeding steel coil of hot rolling leveling unit |
| CN114769311A (en) * | 2022-04-29 | 2022-07-22 | 天津市新天钢冷轧薄板有限公司 | Novel method for improving yield of temper mill |
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| CN101722195A (en) * | 2009-11-27 | 2010-06-09 | 中冶南方工程技术有限公司 | Device and method for maintaining stable operation of strip steel for cold-rolled strip steel production unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070044531A1 (en) * | 2005-08-31 | 2007-03-01 | Red Bud Industries, Inc. | Method and apparatus for conditioning sheet metal |
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| GB951392A (en) * | 1961-10-25 | 1964-03-04 | Blaw Knox Co | Improvements in or relating to method and apparatus for levelling steel strip disposed in a vertical plane |
| CN200951455Y (en) * | 2006-09-08 | 2007-09-26 | 张文波 | Machine for levelling leftover bits and pieces of stainless steel |
| CN101722195A (en) * | 2009-11-27 | 2010-06-09 | 中冶南方工程技术有限公司 | Device and method for maintaining stable operation of strip steel for cold-rolled strip steel production unit |
Non-Patent Citations (1)
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