CN202061902U - Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling - Google Patents
Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling Download PDFInfo
- Publication number
- CN202061902U CN202061902U CN2011200287342U CN201120028734U CN202061902U CN 202061902 U CN202061902 U CN 202061902U CN 2011200287342 U CN2011200287342 U CN 2011200287342U CN 201120028734 U CN201120028734 U CN 201120028734U CN 202061902 U CN202061902 U CN 202061902U
- Authority
- CN
- China
- Prior art keywords
- rolling
- asynchronous
- cold rolling
- steel plate
- pickling
- 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.)
- Expired - Fee Related
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling relates to a pickler for sheet metal strip. The apparatus is composed of an uncoiler, an inlet shear, a welding machine, an inlet loop, a pulling and correcting descaling mill, a pickling tank mechanism, an outlet loop, an edge trimmer, an oiling machine, an outlet shear, and a reeling machine; and is characterized in that the pickling mechanism is composed of a primary pickling mechanism and a secondary pickling mechanism; and an asynchronous controlled rolling apparatus is arranged between the primary pickling mechanism and the secondary pickling mechanism. The removing of the oxidized iron sheet of a steel plate is carried out in the following steps of uncoiling, descaling, primary pickling, asynchronous rubbing and rolling, secondary pickling, edge trimming, oiling, shearing, and reeling into a steel coil. The advantages of the removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling are that novel structure, simple flow, safety, reliability, clean removing of the oxidized iron sheet on a metal strip surface, substantial improvement of surface quality of a cold rolling plate, increasing of qualified rate of products, reducing of production cost, prolonging of the service lifetimes of a lubricating and circulating device, lubricating fluid and a cold rolling roller, reducing of consumption, and guaranteeing of smooth carrying out of cold rolling production.
Description
Technical field
The utility model belongs to metal rolled auxiliary device, relates in particular to cold rolling equipment with the sheet metal strip pickling.
Background technology
Along with automobile, household electrical appliances industrial expansion, requirement to the cold-reduced sheet surface quality is more and more higher, particularly the car outside plate has higher requirement, various countries have proposed corresponding standard for this reason, wherein the most frequently used is so-called O5 standard, wherein the regulation flat cold-rolled sheet preferably one side must be zero defect substantially, make the outward appearance unanimity of high-quality japanning or electrodeposited coating, another side only allows to exist more following the infringement to be shaped and surperficial defective of plating (being coated with) layer tack: pore, little cut, age spot slightly scratches and light discolouration.Cold rolling is rolling under the HTHP with coils of hot-rolled steel, and the iron scale that generates in rolling and coiling process covers on the surface of band steel securely, is covering the defective of belt steel surface.Practice shows the quality that will have a strong impact on cold rolling production, jeopardize cold-rolled steel sheet with this hot-strip that has iron scale.Therefore, the necessary iron scale of removing on the hot rolled steel plate before cold rolling.Current, cold rolling is to be connected and composed successively by uncoiler, descaling mill, descaling bath, rinsing mechanism, drying unit and coiling machine with hot rolled steel plate iron scale scavenge unit.Coils of hot-rolled steel becomes the band steel by the uncoiler uncoiling, and descaling mill smashes iron scale, and with hydrochloric acid or sulfuric acid cleaned surface of steel plate, again through the rinsing of rinsing mechanism, drying unit is dried, and then is rolled into coil of strip by coiling machine in descaling bath.Its defective is: hydrochloric acid or sulfuric acid cleaned can only pickling be fallen supernatant iron scale, powerless for some special iron scales, go rolling if these band steel with iron scale are directly delivered to cold-rolling mill, one then, heavy reduction condition under be rolled, iron scale can be pressed into the matrix of band steel, influence the surface quality and the processing characteristics of cold-reduced sheet, even cause waste product; Its two, enter after the iron scale fragmentation cooling roll the lubricating fluid system, damaged recycle unit, shortened the service life of lubricating fluid; Three, damaged very low, the expensive cold roll of surface roughness, influenced cold rolling production and carry out smoothly.
The utility model content
In order to overcome the defective that prior art exists, the purpose of this utility model provides a kind of cold rolling with hot rolled steel plate iron scale scavenge unit, remove the iron scale on hot rolled steel plate surface neatly, improve the surface quality and the processing characteristics of cold-reduced sheet, improve product percent of pass; Stop iron scale pollution lubricating liquid, prolong the service life of cold roll, guarantee that cold rolling production carries out smoothly.
Cold rolling with hot rolled steel plate iron scale scavenge unit, by uncoiler, inlet cut, welding machine, entry loop, straightening descaling mill, pickling mechanism, outlet kink, end trimming shears, oiler, outlet is cut and coiling machine connects and composes, be characterized in that described pickling mechanism is made up of pickling mechanism and white picking mechanism, between pickling mechanism and white picking mechanism, asynchronous controlled rolling device is set.Enter asynchronous controlled rolling device after being with steel through a pickling, carry out asymmetrical rolling, rout up iron scale, carry out white picking again.
A described pickling mechanism is connected and composed successively by No. 1 descaling bath, No. 2 descaling baths, potcher and first drying device; Preparating acid dilution in No. 1 descaling bath, acid solution is hydrochloric to be 20-50g/l; Preparating acid dilution in No. 2 descaling baths, acid solution is hydrochloric to be 50-70g/l.Belt steel surface behind the broken phosphorus is carried out pickling first.
Described asynchronous controlled rolling device is to be connected and composed successively by two asynchronous rolling machines at least: its No. 1 asynchronous rolling machine and No. 2 asynchronous rolling machine roll surface roughnesses are Ra1-20 μ m, drafts is 30-100 μ, the asynchronous difference of top and bottom rolls is identical, be 5-60%, the roller speed difference of two rolling mills is opposite, promptly No. 1 asynchronous rolling machine topping roll speed is big, and then No. 2 asynchronous rolling machine bottom roll speed are big, and vice versa.The band steel carries out the light reduction stranding and rolls on two asynchronous rolling machines, it is rolling also to be called differential, routs up, exposes iron scale.
Described white picking mechanism is connected and composed successively by No. 3 descaling baths, secondary potcher and secondary drying devices, preparating acid dilution in No. 3 descaling baths, and acid solution is hydrochloric to be 70-90g/l, and the belt steel surface after the asynchronous controlled rolling is carried out white picking.
When this device is removed iron scale, coils of hot-rolled steel becomes the band steel by the uncoiler uncoiling, through straightening descaling mill scale breading, slough thick iron scale, enter No. 1 and No. 2 descaling bath pickling after, removal floats over the iron scale of belt steel surface easy-clear, after the band steel enters No. 1, No. 2 asynchronous rolling machines, carry out the asymmetrical rolling of light reduction, be pressed into steel plate interior oxidation iron sheet when making hot rolling and rout up, again through No. 3 descaling bath pickling, iron scale of routing up and acid solution comprehensive engagement, dissolve fully in acid solution, thoroughly remove clean.
The utility model also provides the removing that utilizes said apparatus iron scale, carries out at normal temperatures, but 20 ℃-100 ℃ of pickling temperatures, concrete steps are as follows:
1, the uncoiling on uncoiler of uncoiling coils of hot-rolled steel becomes the band steel;
2, the crop inlet is cut band steel toe tail is sheared, and is convenient to welding;
3, welding strip welds end to end at the welding machine place, is convenient to continuous production; Entry loop access band steel is to offer the technology down time of welding machine welding;
4, broken phosphorus band steel scale breading on the broken phosphorus machine of straightening, thick iron scale comes off;
5, pickled steel strip pickling on No. 1 descaling bath earlier, acid solution is hydrochloric to be 20-50g/l; Pickling on No. 2 descaling baths then, acid solution is hydrochloric to be 50-70g/l;
6, acid solution is eliminated in clear water rinsing band steel rinsing on potcher;
7, first drying band steel is dried in the first drying device;
8, once rub with the hands and roll the band steel and carry out light reduction at No. 1 asynchronous rolling machine and rub with the hands and roll, roll surface roughness is Ra1-20 μ m, and drafts is 30-100 μ; The asynchronous difference of top and bottom rolls is 5-60%, and the iron scale that adheres to the jail is routed up, exposed to topping roll high speed or bottom roll at a high speed;
9, secondary is rubbed with the hands and to be rolled the band steel and enter No. 2 asynchronous rolling machines and carry out little pressure amount and rub with the hands and roll, and roll surface roughness is Ra1-20 μ m, and drafts is 30-100 μ; The asynchronous difference of top and bottom rolls is 5-60%, and bottom roll high speed or topping roll are at a high speed, and be opposite with No. 1 asynchronous rolling machine, further routs up, exposes the iron scale that adheres to the jail;
10, white picking band steel enters descaling bath again No. 3, carries out white picking, the hydrochloric 70-90g/l of acid solution; Remove iron scale fully;
11, acid solution is eliminated in secondary clear water rinsing band steel rinsing on secondary clear water potcher;
12, secondary drying band steel is dried in the secondary drying device;
13, the side cut end trimming shears are sheared strip edge portion, keep limit portion neat; Outlet kink access band steel is stablize pickling speed and to provide end trimming shears to change technology such as cutting edge down time;
14, oiling band steel carries out oiling at the oiler place;
15, the bundling outlet is cut the band steel is sheared bundling;
16, batch coiling machine strip coiling is become coil of strip.
Compared with prior art, advantage is to adopt pickling and asynchronous machine to rub with the hands to roll, novel structure, and flow process is simple, safe and reliable, and the iron scale on hot-strip surface is removed clean; Significantly improve the surface quality of cold-reduced sheet, no blackspot defective improves product percent of pass, has reduced production cost; Avoid the cold-rolling mill lubricating fluid to pollute, prolonged the service life of lubricating fluid EGR, lubricating fluid and roll for cold rolling, reduced consumption, guaranteed that cold rolling production carries out smoothly.
Description of drawings
The utility model is described in further detail for the contrast accompanying drawing below.
Fig. 1 is cold rolling with hot rolled steel plate iron scale scavenge unit process chart.
Among Fig. 1: 1, uncoiler 2, inlet cut 3, welding machine 4, entry loop 5,7, No. 2 descaling baths of 6, No. 1 descaling bath of straightening descaling mill 8, potcher 9,12, No. 3 descaling baths 13 of 11, No. 2 asynchronous rolling machines of 10, No. 1 asynchronous rolling machine of first drying device, secondary drift ice groove 14, secondary drying device 15, outlet kink 16, bead cutter 17, oiler 18, an outlet cut 19, coiling machine 20, band steel
The specific embodiment
By among Fig. 1 as can be seen: cold rolling with hot rolled steel plate iron scale scavenge unit by uncoiler 1, inlet cut 2, welding machine 3, entry loop 4,6, No. 2 descaling baths of 5, No. 1 descaling bath of straightening descaling mill 7, potcher 8,11, No. 3 descaling baths 12 of 10, No. 2 asynchronous rolling machines of 9, No. 1 asynchronous rolling machine of first drying device, secondary drift ice groove 13, secondary drying device 14, outlet kink 15, bead cutter 16, oiler 17, an outlet cut 18, coiling machine 19 connects and composes successively.
This device at normal temperatures, remove the coils of hot-rolled steel iron scale, by uncoiling → inlet shearing → welding machine → straightening scale breading → one time pickling → white picking → rinsing → first drying → once asynchronous stranding roll → the asynchronous stranding of secondary rolls → white picking → secondary rinsing → secondary drying → side cut → oiling, export and shear → coil into the coil of strip step and carry out.
Embodiment 1
Steel grade DC-03, thick 2.5mm hot rolled steel plate acid washing method are specific as follows:
1, straightening scale breading;
2, No. 1 descaling bath acid solution of pickling is hydrochloric is 30g/l; No. 2 descaling bath acid solutions are hydrochloric to be 60g/l.
3, a rinsing;
4, first drying;
5, rub once that to roll roughness be Ra1-20 μ m with the hands, drafts is 40 μ; The asynchronous difference of top and bottom rolls is 15%, and bottom roll at a high speed;
6, secondary rubs that to roll roughness be Ra1-20 μ m with the hands, and drafts is 40 μ; The asynchronous difference of top and bottom rolls is 15%, and topping roll at a high speed;
7, white picking acid solution is hydrochloric to be 80g/l;
8, secondary rinsing;
9, secondary drying.
Above-mentioned data are listed in the table 1.
Embodiment 2
Steel grade DC-04, thick 3.0mm hot rolled steel plate acid washing method are with embodiment 1, and data are listed in the table 1.
Embodiment 3
Steel grade DC-03, thick 3.2mm hot rolled steel plate acid washing method are with embodiment 1, and data are listed in the table 1.
Table 1
Claims (4)
1. cold rolling with hot rolled steel plate iron scale scavenge unit by uncoiler (1), inlet cut (2), welding machine (3), entry loop (4), straightening descaling mill (5), descaling bath mechanism, outlet kink (15), bead cutter (16), oiler (17), (18) are cut in outlet, coiling machine (19) connects and composes, it is characterized in that described pickling mechanism is made up of pickling mechanism and white picking mechanism, between pickling mechanism and white picking mechanism, asynchronous controlled rolling device is set.
2. according to claim 1 cold rolling with hot rolled steel plate iron scale scavenge unit, it is characterized in that a described pickling mechanism is connected and composed successively by No. 1 descaling bath (6), No. 2 descaling baths (7), a potcher (8) and first drying device (9); Preparating acid dilution in No. 1 descaling bath (6), acid solution is hydrochloric to be 20-50g/l; Preparating acid dilution in No. 2 descaling baths (7), acid solution is hydrochloric to be 50-70g/l.
3. according to claim 1 cold rolling with hot rolled steel plate iron scale scavenge unit, it is characterized in that described asynchronous controlled rolling device is to be connected and composed successively by two asynchronous rolling machines (10,11) at least, the roll surface roughness of its No. 1 asynchronous rolling machine (10) and No. 2 asynchronous rolling machines (11) is Ra1-20 μ m, drafts is 30-100 μ m, the asynchronous difference of upper and lower roll is 5-60%, the roller speed difference of two rolling mills is opposite, promptly No. 1 asynchronous rolling machine (10) topping roll speed is big, then No. 2 asynchronous rolling machines (11) bottom roll speed is big, and vice versa.
4. according to claim 1 cold rolling with hot rolled steel plate iron scale scavenge unit, it is characterized in that described white picking mechanism is connected and composed successively by No. 3 descaling baths (12), secondary potcher (13) and secondary drying device (14), preparating acid dilution in No. 3 descaling baths (12), acid solution is hydrochloric to be 70-90g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200287342U CN202061902U (en) | 2011-01-22 | 2011-01-22 | Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200287342U CN202061902U (en) | 2011-01-22 | 2011-01-22 | Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202061902U true CN202061902U (en) | 2011-12-07 |
Family
ID=45055782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200287342U Expired - Fee Related CN202061902U (en) | 2011-01-22 | 2011-01-22 | Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202061902U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205350A (en) * | 2011-01-22 | 2011-10-05 | 马鞍山钢铁股份有限公司 | Device and method for removing scale skin of hot rolled steel plate for cold rolling |
| CN103157690A (en) * | 2013-02-26 | 2013-06-19 | 河北钢铁股份有限公司唐山分公司 | Production method of hot-rolling and acid-washing automobile crossbeam steel belt |
| CN103320683A (en) * | 2013-06-14 | 2013-09-25 | 河北钢铁股份有限公司唐山分公司 | Process for producing hot-rolled acid-pickled 610 L automobile frame steel strip with thin gauge and high elongation |
| CN105102142A (en) * | 2013-03-27 | 2015-11-25 | 杰富意钢铁株式会社 | Thick steel plate manufacturing device and manufacturing method |
| CN108526911A (en) * | 2018-06-19 | 2018-09-14 | 夏征 | A kind of combined type scale removal equipment and minimizing technology |
| CN109183049A (en) * | 2018-10-10 | 2019-01-11 | 高飞 | A kind of pickling solution and application method removing chromansil material surface oxidation film |
-
2011
- 2011-01-22 CN CN2011200287342U patent/CN202061902U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205350A (en) * | 2011-01-22 | 2011-10-05 | 马鞍山钢铁股份有限公司 | Device and method for removing scale skin of hot rolled steel plate for cold rolling |
| CN103157690A (en) * | 2013-02-26 | 2013-06-19 | 河北钢铁股份有限公司唐山分公司 | Production method of hot-rolling and acid-washing automobile crossbeam steel belt |
| CN105102142A (en) * | 2013-03-27 | 2015-11-25 | 杰富意钢铁株式会社 | Thick steel plate manufacturing device and manufacturing method |
| CN103320683A (en) * | 2013-06-14 | 2013-09-25 | 河北钢铁股份有限公司唐山分公司 | Process for producing hot-rolled acid-pickled 610 L automobile frame steel strip with thin gauge and high elongation |
| CN103320683B (en) * | 2013-06-14 | 2015-02-18 | 河北钢铁股份有限公司唐山分公司 | Process for producing hot-rolled acid-pickled 610 L automobile frame steel strip with thin gauge and high elongation |
| CN108526911A (en) * | 2018-06-19 | 2018-09-14 | 夏征 | A kind of combined type scale removal equipment and minimizing technology |
| CN108526911B (en) * | 2018-06-19 | 2021-12-10 | 夏征 | Combined type oxide skin removing equipment and removing method |
| CN109183049A (en) * | 2018-10-10 | 2019-01-11 | 高飞 | A kind of pickling solution and application method removing chromansil material surface oxidation film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102205350A (en) | Device and method for removing scale skin of hot rolled steel plate for cold rolling | |
| CN202061902U (en) | Removing apparatus for oxidized iron sheet of hot rolled steel plate in cold rolling | |
| CN101376212B (en) | Cold rolling serial production line of product steel coil produced from white coil | |
| AU716533B2 (en) | Process for the continuous production of a rolled stainless steel sheet strip and continuous production line for carrying out the process | |
| CN205011821U (en) | High -quality ultra -thin hot -galvanize belted steel continuous production line | |
| CN103331584B (en) | A kind of production technology of photovoltaic solar copper strips | |
| CN102172835A (en) | Cold metal plate strip cold continuous rolling production line and production method | |
| CN111014315B (en) | Method for improving surface reflectivity of rolled hard coil strip steel | |
| CN103331303B (en) | A kind of pickling milling method of cold rolling parking spot | |
| CN105537870A (en) | Production method of 5052 aluminum alloy tank cover base material | |
| CN106756698A (en) | A kind of hot dip galvanizing production process | |
| EP2067541B1 (en) | Method for continuously manufacturing cold-rolled steel | |
| CN113846334A (en) | Method for controlling coating defects of pickling and galvanizing combined production line | |
| CN114643279A (en) | Method for controlling shape of ultrathin ultra-wide steel strip for continuous galvanizing | |
| CN105543518B (en) | A kind of production method of 5182 aluminium alloy draw ring material base material | |
| CN110586691A (en) | Control method for passing welding line of silicon steel strip through withdrawal and straightening machine | |
| CN111390570B (en) | Method for mutual conversion between acid pickling coil and hot rolling leveling on acid leveling line | |
| WO2024087517A1 (en) | Non-oriented silicon steel full-continuous production system and method | |
| CN112916621B (en) | Energy-saving control method for hot rolling turbid circulating water process | |
| CN102978644B (en) | Rinsing technology of pickling line | |
| CN218746575U (en) | Full-continuous production system for non-oriented silicon steel | |
| CN217948225U (en) | Strip processing production line containing secondary rolling process | |
| CN104028557A (en) | Copper or copper alloy strip and manufacturing method and producing device thereof | |
| CN114472521B (en) | Production method of rough surface acid continuous rolling hot-rolled pickled plate | |
| CN206316766U (en) | A kind of production line of frosted black plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20180122 |