CN102836890A - Cold-state stainless steel band or plate descaling process - Google Patents
Cold-state stainless steel band or plate descaling process Download PDFInfo
- Publication number
- CN102836890A CN102836890A CN201210372643XA CN201210372643A CN102836890A CN 102836890 A CN102836890 A CN 102836890A CN 201210372643X A CN201210372643X A CN 201210372643XA CN 201210372643 A CN201210372643 A CN 201210372643A CN 102836890 A CN102836890 A CN 102836890A
- Authority
- CN
- China
- Prior art keywords
- steel band
- descaling
- sheet material
- pressure water
- stainless steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a cold-state stainless steel band or plate descaling process, which mainly and sequentially comprises the following six process steps of: preparing for feeding; performing stretch bending, scale breaking and straightening; performing high-pressure water descaling pretreatment; performing high-pressure water descaling; performing high-pressure water descaling post-treatment; and coiling. According to the cold-state stainless steel band or plate descaling process, after the former two treatment steps are performed, the steel band or plate is turned from a horizontal state into a vertical state, then subsequent two processes are performed, and the steel band or plate is turned into the horizontal state and the subsequent treatment processes are performed. The cold-state stainless steel band or plate descaling process is combined application of a stainless steel acid washing continuous descaling process and a high-pressure water descaling system in the prior art, and continuous descaling production of an abrasive high pressure water jet descaling technology on the cold-state stainless steel band or plate is realized. Compared with the conventional stainless steel acid washing descaling process, a shot blasting step and an acid washing step are reduced, the abrasive high pressure water jet descaling technology is adopted, the descaling speed and the efficiency are high, the effect is good, no damage is caused to the surface of the stainless steel band or plate, and the environment is not polluted.
Description
Technical field
The present invention relates to Ferrous Metallurgy field oxidation on metal surface skin anacidity flush away and remove technology, especially be directed against the continuous descaling process of cold conditions stainless steel band or sheet material.
Background technology
Stainless steel has many superior performances, as a kind of special steel, has obtained using widely in life with in producing.Corrosion resistant plate or band are being brought into play irreplaceable effect especially as the major product in the stainless steel in producing and living.But stainless steel can produce the black and hard oxide skin of one deck on the surface in the process of hot rolling and annealing, and with matrix bond get quite closely, its main component is Fe
2O
3And Cr
2O
3The existence meeting of this oxide skin produces serious influence to cold rolling process, so before stainless-steel cold-rolling processing, must be removed.Different with straight carbon steel, stainless steel is owing to contain the Cr that is insoluble in acid in its oxide skin
2O
3, therefore adopt conventional straight carbon steel acid cleaning process not reach the purpose of removing the stainless steel oxidation skin.
The descaling process of stainless steel band mainly contains pickling de-scaling and high-pressure water descaling at present.
The technology of pickling de-scaling is mainly following: storing → scale breading → ball blast → prerinse → scrub → sulfuric acid electrolysis → scrub → nitration mixture pickling → scrub → rinsing → hot-air seasoning → smooth → outlet storing → oiling → shear → batch → bundling → blanking is cut → entered the mouth to material loading → uncoiling → aligning → shearing → welding → shovel slag → punching → crescent moon.There is following shortcoming in above-mentioned technology in actual production process: stainless steel strip Shot Blasting meeting stays many small ruts on the surface of band steel; The meeting of Shot Blasting simultaneously makes the band steel produce the surface sclerosis; The surface quality of influence band steel, dust pollution is serious in the ball blast process in addition; The oxide skin of stainless steel strip is owing to exist Cr
2O
3Cause in the production process of reality the belt steel surface after overpickling to exist and do not remove clean oxide skin, form pit, influence stainless surface quality; Because a large amount of strong acid solutions that use in this technical process, environmental pollution is serious.
High-pressure water descaling is an important techniques of modern steel rolling; Fields such as hot rolling steel billet de-scaling have been widely used in; Because band has following characteristics with respect to hot rolling steel billet, bar etc.: band is bearing water under high pressure hitting power direction size little (thin thickness); Under the water under high pressure effect, bounce easily, and then it is unclean to cause oxide skin to remove; Band is with respect to steel billet, bar equal length direction size big (often going up km even a few km), and therefore with respect to high-pressure water descaling technologies such as steel billet or bars, the descaling process of band just needs to guarantee how to realize its continuous de-scaling process; With respect to steel billet, bar etc., longitudinal stripe appears in cold conditions band more easily.
Summary of the invention
The object of the present invention is to provide a kind of efficient de-scaling, reliable, free of contamination cold conditions stainless steel band or the continuous descaling process of sheet material.
This cold conditions stainless steel belt provided by the invention or sheet material descaling process may further comprise the steps:
The coil of strip of steel band or sheet material successively through material loading, uncoiling, leveling, shearing, butt welding treatment process, is welded into totally continuous form with discontinuous steel band or sheet material;
Steel tape or sheet material to last step clamp and the alternating bending processing, make its surperficial firecoat broken;
The processing of cutting edge of steel band that the surperficial phosphorus skin of last step is broken or sheet material; Be plumbness with it by the level upset then; To the steel band of plumbness or sheet material enter the mouth storing and tensioning PROCESS FOR TREATMENT, guarantee that tension force is between 10-20Mpa;
With the water under high pressure is that outside injection of dynamic impact abrasive material sprayed de-scaling to steel band or sheet material, then processing is extracted, dried to steel band or sheet material; Guarantee during de-scaling that injection apparatus becomes 5-15 ° angle of inclination with the traffic direction of steel band or sheet material, the operating pressure that guarantees high pressure water system simultaneously is between 40-50MP;
, post processing
Steel band or sheet material to through high-pressure water descaling are level by the plumbness upset, carry out passivation then, be coated with oil processing;
Steel band or the sheet material that will pass through a step process at first cut into the coil of strip size that needs through horizontal cutting with continuous band steel, batch then, bundling, blanking.
The present invention is the combination utilization to continuous descaling process of prior art acid-washing stainless steel and high-pressure water descaling system; Beneficial effect with two kinds of descaling methods has been realized the continuous de-scaling production of abrasive high-pressure water jet technique of scale removal on cold conditions stainless steel belt or sheet material.The present invention is with respect to existing acid-washing stainless steel descaling process; Ball blast link and pickling link have been reduced; Adopt the abrasive high-pressure water jet technique of scale removal, rely on the kinetic energy of high-pressure water jet to carry out de-scaling, de-scaling speed is fast, efficient is high, effective; To the surperficial not damaged of stainless steel belt or sheet material, environmentally safe.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is an embodiments of the invention equipment flowsheet sketch map.
Fig. 3 is the main TV structure sketch map of switching mechanism of the present invention.
Fig. 4 is the plan structure sketch map of Fig. 3.
Fig. 5 is a high pressure water system schematic diagram of the present invention.
The specific embodiment
This cold conditions stainless steel band provided by the invention or sheet material descaling process mainly comprise material loading preparation, stretch bending scale breading aligning, high-pressure water descaling preliminary treatment, high-pressure water descaling, high-pressure water descaling post processing, coiling technique step.Concrete technological process is as shown in Figure 1, and the equipment flowsheet sketch map of present embodiment is as shown in Figure 2.
Material loading is prepared section: the coil of strip of steel band or sheet material successively through material loading, uncoiling, leveling, shearing, butt welding treatment process, is welded into totally continuous form with discontinuous steel band or sheet material, guarantees the continuity of welding back steel band or sheet material.Can adopt skip car as shown in Figure 2 that stainless steel belt or sheet material are delivered to the uncoiling of spiral arm uncoiler; Shear butt welding through delivering to Shearing Butt Resistance Welder behind the level(l)ing machine leveling; Discontinuous steel band or sheet material are welded into totally continuous form, and the process water tank cools off and prevents because the heat that produces in the butt welding process scorches rubber roll and guarantees that through centering body it is to neutrality simultaneously again.
Stretch bending scale breading aligning section: steel tape or sheet material are clamped and the alternating bending processing, make its surperficial firecoat broken.Prepare the section back at material loading and connect a stretch bending scale breading straightener, the broken phosphorus of stretch bending repeatedly through the straightening descaling mill makes the surperficial phosphorus skin of steel tape or sheet material broken, improves the de-scaling efficient of production line.
High-pressure water descaling pretreatment section: steel band that surperficial phosphorus skin is broken or the sheet material processing of cutting edge; Be plumbness with it by the level upset then; To the steel band of plumbness or sheet material enter the mouth storing and tensioning PROCESS FOR TREATMENT, guarantee that tension force is between 10-20Mpa.Implement the capital equipment of this PROCESS FOR TREATMENT such as following; The band steel at first carries out centering through centering body after stretch bending scale breading straightener comes out; After the centering through the end trimming shears processing of cutting edge; Slitter edge after cutting is through the collection of curling of slitter edge crimping machine; Band steel after the side cut enters into switching mechanism (seeing Fig. 3, Fig. 4) through flange fixing installation, under the effect of switching mechanism the band steel by the horizontal positioned upset for vertical place the back get into the entry loop storing with guarantee the de-scaling of band steel continuously, the idler roller that pinches that pinches in idler roller and the high-pressure water descaling last handling process that exports behind the kink is that the band steel of descaling system provides stable tension.Wherein the main effect of switching mechanism is to be plumbness with steel band or sheet material by the level upset; Make that steel band or sheet material upper and lower surfaces through high-pressure water descaling system the time is symmetrical fully; Reduce the band steel because the possibility that abrasive particle in the high-pressure water descaling process rests on belt steel surface, is eliminated in the deadweight effect simultaneously to the influence of band steel rate of tension, its principle be through many roller groups to different angles gradually with the band steel upset of horizontal positioned for vertically placing; Like Fig. 3, shown in Figure 4; Can adopt 4 pair roller groups to arrange by 0 degree, 30 degree, 60 degree, 90 degree, same, also can adopt how right roller group to arrange as required; In order to guarantee with the live continuous de-scaling production of sheet material of steel, behind the entry loop with the outlet kink before the idler roller that pinches be the tension force that descaling system provides 10 ~ 20MPa.
High-pressure water descaling: with the water under high pressure is that outside injection of dynamic impact abrasive material sprayed de-scaling to steel band or sheet material, then processing is extracted, dried to steel band or sheet material; Guarantee during de-scaling that injection apparatus becomes 5-15 ° angle of inclination with the traffic direction of steel band or sheet material, the operating pressure that guarantees high pressure water system simultaneously is between 40-50MP.Implement the capital equipment of this PROCESS FOR TREATMENT such as following, comprise high-pressure water descaling system, extract machine, dryer.Wherein high-pressure water descaling system is that the present invention realizes important step of quantity-produced; High-pressure water descaling system comprise the agitator 2 that is arranged in De-scaling box 1 below, to agitator add the automatic fluidisation sanding device 9, injection apparatus 3, water tank 12 of sand, also comprise the sand separator 6 that is positioned at De-scaling box, provide the mortar pump 7 of abrasive material, the high-pressure pump 8 that is used to produce water under high pressure, retracting device 11, sedimentation basin 13, concentration detector 10, agitator that abrasive material is configured to sand separator; Pump in the sand separator 6 by mortar pump and to shunt; Sand separator 6 is connected with injection apparatus 5; Send into abrasive material in the injection apparatus 5; High-pressure pump 8 pumps into water under high pressure in the injection apparatus 5, is that outside injection of dynamic impact abrasive material sprayed de-scaling to stainless steel belt or sheet material with the water under high pressure.Injection apparatus 5 becomes 5-15 ° angle of inclination with the traffic direction of stainless steel belt or sheet material 4.
High-pressure water descaling post processing:, carry out passivation, oiling, shear treatment then to being level by the plumbness upset through de-scaling, the steel band of extracting, drying or sheet material.The capital equipment of this PROCESS FOR TREATMENT such as following; Comprise equipment compositions such as pinching idler roller, outlet kink, switching mechanism, passivation device; At first through pinching idler roller, the idler roller that pinches of itself and high-pressure water descaling pretreatment section uses the band steel in pairs, for system's band steel provides tension force after the high-pressure water descaling system de-scaling; The outlet kink is that the band steel after the de-scaling provides the storing ability, guarantees the continuous of whole production line.The band steel of the switching mechanism of outlet behind the kink after with de-scaling is horizontal positioned by vertical placement upset.If production needs behind switching mechanism, to add equipment such as passivation device, oiler the band steel is handled.
Batch the blanking section: this process section mainly the band steel is curled and blanking is handled.The equipment of this PROCESS FOR TREATMENT section mainly comprises cutter, crimping machine, baler, following truck.At first continuous band steel is cut into the coil of strip size that needs through the band steel after the post processing through cutter; Tensioning apparatus on the coiling machine and tensioning machine are that coiling process provides coiling tension; Guarantee the effect of batching of band steel down through the tension force effect; Band steel after batching passes through truck blanking down, accomplishes whole de-scaling process.
Claims (1)
1. cold conditions stainless steel belt or sheet material descaling process may further comprise the steps:
With the coil of strip of steel band or sheet material successively through material loading, uncoiling, leveling, shearing, butt welding treatment process; Discontinuous steel band or sheet material are welded into totally continuous form, guarantee the continuity of in follow-up de-scaling process, producing of welding back steel band or sheet material;
Steel tape or sheet material to last step clamp and the alternating bending processing, make its surperficial phosphorus skin broken;
The processing of cutting edge of steel band that the surperficial phosphorus skin of last step is broken or sheet material; Be plumbness with it by the level upset then; To the steel band of plumbness or sheet material enter the mouth storing and tensioning PROCESS FOR TREATMENT, guarantee that tension force is between 10-20Mpa;
, high-pressure water descaling
With the water under high pressure is that outside injection of dynamic impact abrasive material sprayed de-scaling to steel band or sheet material, then processing is extracted, dried to steel band or sheet material; Guarantee during de-scaling that injection apparatus becomes 5-15 ° angle of inclination with the traffic direction of steel band or sheet material, the operating pressure that guarantees high pressure water system simultaneously is between 40-50MP;
To being level by the plumbness upset, carrying out passivation then, be coated with the wet goods processing through de-scaling, the steel band of extracting, drying or sheet material;
, batch
Steel band or the sheet material that will pass through a step process at first cut into the coil of strip size that needs through horizontal cutting with continuous band steel, batch then, bundling, blanking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372643XA CN102836890A (en) | 2012-09-29 | 2012-09-29 | Cold-state stainless steel band or plate descaling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372643XA CN102836890A (en) | 2012-09-29 | 2012-09-29 | Cold-state stainless steel band or plate descaling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102836890A true CN102836890A (en) | 2012-12-26 |
Family
ID=47364766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210372643XA Pending CN102836890A (en) | 2012-09-29 | 2012-09-29 | Cold-state stainless steel band or plate descaling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102836890A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492835A (en) * | 2014-12-05 | 2015-04-08 | 北京工业大学 | System for cleaning band steel by scale breaking through high-pressure water mixed flow |
| CN105945074A (en) * | 2016-02-02 | 2016-09-21 | 北京科技大学 | Cold rolled strip steel acid-free descaling system and descaling method |
| CN107042239A (en) * | 2017-05-24 | 2017-08-15 | 北海诚德镍业有限公司 | Production system is washed in a kind of tandem rolling continuous annealing that can switch many grade stainless strips online |
| CN107344280A (en) * | 2017-03-20 | 2017-11-14 | 杭州自强链传动有限公司 | A kind of chain and chain-plate material producing process |
| CN109333374A (en) * | 2018-12-03 | 2019-02-15 | 山西太钢不锈钢股份有限公司 | Surface of steel plate oxide removal method |
| CN110404698A (en) * | 2019-08-01 | 2019-11-05 | 台州弘锐精密机械有限公司 | A kind of stainless steel plate production and processing technology |
| CN110508630A (en) * | 2019-07-23 | 2019-11-29 | 常熟市长江不锈钢材料有限公司 | A kind of stainless steel belt surface oxide layer sweep-out method |
| CN111230749A (en) * | 2020-01-22 | 2020-06-05 | 辽宁科技大学 | Metal strip surface descaling device and method |
| CN113000616A (en) * | 2021-03-16 | 2021-06-22 | 秦皇岛市国阳钢铁有限公司 | Rolled line iron scale recovery device and recovery method |
| CN115077205A (en) * | 2022-06-10 | 2022-09-20 | 扬州一川镍业有限公司 | Automatic drying device and method for red nickel ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269052A (en) * | 1978-06-09 | 1981-05-26 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Mechanical descaling device |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| WO2010002103A2 (en) * | 2008-07-04 | 2010-01-07 | 주식회사 포스코 | Method and facility for removing scale from hot rolled steel sheet |
| CN102172835A (en) * | 2010-12-30 | 2011-09-07 | 宝山钢铁股份有限公司 | Cold metal plate strip cold continuous rolling production line and production method |
-
2012
- 2012-09-29 CN CN201210372643XA patent/CN102836890A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269052A (en) * | 1978-06-09 | 1981-05-26 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Mechanical descaling device |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| WO2010002103A2 (en) * | 2008-07-04 | 2010-01-07 | 주식회사 포스코 | Method and facility for removing scale from hot rolled steel sheet |
| CN102172835A (en) * | 2010-12-30 | 2011-09-07 | 宝山钢铁股份有限公司 | Cold metal plate strip cold continuous rolling production line and production method |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492835A (en) * | 2014-12-05 | 2015-04-08 | 北京工业大学 | System for cleaning band steel by scale breaking through high-pressure water mixed flow |
| CN105945074B (en) * | 2016-02-02 | 2018-08-03 | 北京科技大学 | A kind of cold-rolled steel strip acid-free descaling system and descaling method |
| CN105945074A (en) * | 2016-02-02 | 2016-09-21 | 北京科技大学 | Cold rolled strip steel acid-free descaling system and descaling method |
| CN107344280A (en) * | 2017-03-20 | 2017-11-14 | 杭州自强链传动有限公司 | A kind of chain and chain-plate material producing process |
| CN107042239B (en) * | 2017-05-24 | 2020-08-11 | 广西北部湾新材料有限公司 | Continuous rolling continuous annealing and washing production system capable of switching multi-grade stainless steel strips on line |
| CN107042239A (en) * | 2017-05-24 | 2017-08-15 | 北海诚德镍业有限公司 | Production system is washed in a kind of tandem rolling continuous annealing that can switch many grade stainless strips online |
| CN109333374A (en) * | 2018-12-03 | 2019-02-15 | 山西太钢不锈钢股份有限公司 | Surface of steel plate oxide removal method |
| CN110508630A (en) * | 2019-07-23 | 2019-11-29 | 常熟市长江不锈钢材料有限公司 | A kind of stainless steel belt surface oxide layer sweep-out method |
| CN110404698A (en) * | 2019-08-01 | 2019-11-05 | 台州弘锐精密机械有限公司 | A kind of stainless steel plate production and processing technology |
| CN111230749A (en) * | 2020-01-22 | 2020-06-05 | 辽宁科技大学 | Metal strip surface descaling device and method |
| CN113000616A (en) * | 2021-03-16 | 2021-06-22 | 秦皇岛市国阳钢铁有限公司 | Rolled line iron scale recovery device and recovery method |
| CN115077205A (en) * | 2022-06-10 | 2022-09-20 | 扬州一川镍业有限公司 | Automatic drying device and method for red nickel ore |
| CN115077205B (en) * | 2022-06-10 | 2023-05-30 | 扬州一川镍业有限公司 | Automatic red nickel ore drying device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102836890A (en) | Cold-state stainless steel band or plate descaling process | |
| US5879465A (en) | Method and apparatus for descaling hot rolled stainless steel strip | |
| KR101053414B1 (en) | Descaling method and removal equipment of hot rolled steel strip | |
| CN102172835A (en) | Cold metal plate strip cold continuous rolling production line and production method | |
| KR100395288B1 (en) | Process for the continuous production of a rolled stainless steel sheet strip and continuous production line for carrying out the process | |
| CN102756002B (en) | The method of the continuous de-scaling of a kind of jet | |
| CN1864880A (en) | An acidless descaling process for cold rolled steel strip and manufacturing device thereof | |
| CN202292447U (en) | Steel strip continuous type surface cleaning production line | |
| CN103706637A (en) | Novel cold rolling short-process technology and units of novel cold rolling short-process technology | |
| CN107321790B (en) | The acid washing method of low-carbon hot-rolling strip | |
| CN110760859A (en) | Continuous production method for 400 series stainless steel hot rolled steel strip by fluorine-free acid pickling and special surfactant | |
| US4188812A (en) | Installation for production of continuously cold rolled sheet metal or strip | |
| CN108262359A (en) | A kind of process for improving cold rolling titanium strip coil surface quality | |
| CN103878189A (en) | Acidless descaling technological method and descaling device for steel surfaces | |
| CN102452032A (en) | Mechanical descaling method | |
| CN102451844A (en) | Mechanical descaling method and device for cold-state band steel | |
| CN108067507B (en) | Control method for rough rolling warping of hot-rolled variety steel | |
| CN101138837A (en) | Cold-rolled steel strip acid-free descaling technique and special device thereof | |
| CN103029010B (en) | A kind of compact production technology of metal plate and belt is arranged | |
| CN113355496B (en) | On-line solution annealing process for rolling waste heat of stainless steel hot-rolled coil | |
| CN203018474U (en) | Plate blank descaling treatment device during rough rolling of hot-rolled strip steel | |
| CN103894429A (en) | Descaling unit arrangement method for jet descaling and jet descaling method for decaling unit arrangement | |
| CN108505106A (en) | Ordinary carbon steel strip is electrolysed de-scaling production system | |
| CN112620360A (en) | Acid-free shot blasting rust removal production line for hot-rolled steel coils | |
| CN217289867U (en) | Hot rolling leveling acid-free descaling combined unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |