CN103878189A - Acidless descaling technological method and descaling device for steel surfaces - Google Patents
Acidless descaling technological method and descaling device for steel surfaces Download PDFInfo
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- CN103878189A CN103878189A CN201410094872.9A CN201410094872A CN103878189A CN 103878189 A CN103878189 A CN 103878189A CN 201410094872 A CN201410094872 A CN 201410094872A CN 103878189 A CN103878189 A CN 103878189A
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Abstract
The invention provides an acidless descaling technological method and a descaling device for steel surfaces. The device comprises an unwinding machine for forming a full-automatic assembly line, a shearing machine, a welding machine, a multi-roller descaling machine, a steel brushing machine, a multi-roller polishing machine, a steel brush machine, a water descaling machine, a shearing machine and a winding machine, wherein the unwinding machine releases steel belts or wires, and the steel belts or wires sequentially penetrate through the shearing machine, the welding machine, the multi-roller descaling machine, the steel brushing machine, the multi-roller polishing machine, the steel brush machine, the water descaling machine and the shearing machine and then are wound by the winding machine. The device has the advantages that acid consumption is avoided, and serious pollution of acid washing to the human body, the environment, the device and rivers is eradicated. Heating and fuel consumption are avoided, and only very little electric power is consumed. The yield of steel is increased by 1.5 percent to 2.0 percent compared with steel washed through acid, and the yield of the steel is increased by 3 percent compared with steel processed with a shot blasting method. Great benefits are provided with stainless steel and alloy steel.
Description
Technical field
The present invention relates to hot-strip manufacture field, refer in particular to a kind of band rod wire rod at the anacidity descaling process method and the device that carry out before cold working.
Background technology
After various steel hot rollings, surface all must form the iron scale (being commonly called as " squama ") of one deck black.As required, after a lot of steel hot rollings, all must, through cold working, just can become the required material of user.Iron scale appearance is hard, has not a particle of toughness, so, before steel carry out cold working, it must be disposed to (being commonly called as de-scaling).
Traditional descaling process is pickling, neutralizes the iron scale of steel surface with hydrochloric acid (or sulfuric acid) solution.But this method cost is high, per ton cost is 140 yuan of left and right, and metal consumption is large.Because when pickling, acid solution, in neutralizing scale on surface, must be reacted with steel matrix, neutralizes part steel, and this is commonly called as " overpickling ".Overpickling corrodes the amount of steel body, maximum in the time of the new acid solution of displacement.Have data to show, the iron loss that overpickling causes is 0.5%, but our result of test is 1.5 ~ 2.0%.So the shortcoming of pickling is:
1) cost is high: acid washing rolled steel cost per ton is 140 yuan of left and right.
2) metal consumption is large: the steel consumption of general steel mill pickling is 1.5 ~ 2.0%, have up to 3%
3) when pickling, inevitably produce hydrogen embrittlement for steel, this alloy steel, high-carbon steel are particularly important.
4) pickling floor space is large: while adopting continuous acid-washing, production line length is generally 100 ~ 150 meters of left and right.Acid-washing stainless steel must be through alkali cleaning and two grooves of pickling, therefore production line length reaches 250 ~ 300 meters.
5) acid mist is serious to hazard to person, to surrounding environment, electromechanical equipment seriously corroded.
6) spent acid is processed investment greatly, and occupation of land is many.Do not process river, fishery, crops are produced and had a strong impact on.
At present, study a lot of of anacidity de-scaling both at home and abroad, the abrasive high-pressure water descaling production line that Japan goes into operation, adopts 30 plunger displacement pumps that hydraulic pressure is 25 ~ 35MPa, after also retain one section of descaling bath.Visible its investment is huge.Domestic also useful ball blast de-scaling, not only dust pollution is large for it, and still retains shorter (approximately 20 ~ 30 meters long) descaling bath below.Therefore, this technique can not be eliminated pickling completely to environment, to equipment, harm to human body, and invests huge.Processing plunger pump trouble is many, maintenance difficult.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of iron scale that adopts the physical method of plant equipment to remove steel surface is completely provided, reach the object of anacidity de-scaling.
For achieving the above object, technical scheme provided by the present invention is: a kind of anacidity descaling process method for steel, and described method includes following steps:
1), steel are passed through to toothed multiple roll descaling mill, the iron scale of broken steel surface;
2), the steel of crusher surface iron scale are sent into steel brush machine, the broken iron scale of peeling off is brushed off;
3), the steel that brush off iron scale are sent into another multiple roll polishing machine or sand mill with knife edge tooth, the loose iron scale root (Fe of steel surface will be remained in
3o
4, FeO) thoroughly remove;
4), the steel of processing in step 3) are sent in steel brush machine, steel surface is cleaned with water;
5), the steel of processing in step 4) are cleaned up with normal pressure clear water;
6), the steel of processing are sent into deactivation slot, carry out steel surface passivation in step 5);
7) steel, after passivation, shear on demand, batch.
For an anacidity descaling system for steel, it includes the unreeling machine, cutter, bonding machine, multiple roll dephosphorizing machine, brush steel machine, multiple roll polishing machine, steel brush machine, water descaling mill, cutter, the winder that form full-automatic assembly line; Steel band or wire rod are sent by unreeling machine, successively through after cutter, bonding machine, multiple roll dephosphorizing machine, brush steel machine, multiple roll polishing machine, steel brush machine, water descaling mill, cutter by winder rolling.
The invention has the advantages that:
1, anacidity consumption, thereby thoroughly eradicated the severe contamination that pickling causes to human body, to environment, to equipment, to river.
2, the present invention's technique does not need heating, and not consume fuel, only consumes little electric power.
3, there is no hydrogen embrittlement, burning into sand phenomenon through the steel of processing of the present invention, any surface finish is even.
4, the steel after the steel of processing of the present invention are than pickling improve lumber recovery more than 1.5 ~ 2.0%, improve lumber recovery more than 3% than the steel of ball blast method processing.This is firm for stainless steel and alloy, is the income that pen is very large.With respect to ball blast descaling process, the increase rate of lumber recovery is larger.
5, small accommodation area of the present invention.Can save area more than 60% than pickling.
6, production cost of the present invention is low.Reduce costs more than 70% than pickling.
7, existing steel, in the time of pickling, inevitably will produce hydrogen embrittlement, and the present invention can not produce this phenomenon, and this alloy steel, high-carbon steel are particularly important.
Accompanying drawing explanation
Fig. 1 is steel anacidity descaling process layout drawing of the present invention.
The specific embodiment
Below in conjunction with institute's drawings attached, the invention will be further described, and preferred embodiment of the present invention is: referring to accompanying drawing 1, the technological parameter described in the present embodiment is:
Steel width: do not limit thickness of steel product: <8 ~ 10mm, de-scaling speed: be generally 12 ~ 18 ms/min, be 50 ms/min to the maximum.Hydraulic pressure: 0.5MPa, water consumption: 15 ~ 20 tons/hour, (after water sedimentation capable of circulation for) water quality requirement: simple filtration.
The anacidity descaling system of the present embodiment includes the unreeling machine, cutter, bonding machine, multiple roll dephosphorizing machine, brush steel machine, multiple roll polishing machine, steel brush machine, water descaling mill, cutter, the winder that form full-automatic assembly line;
The processing technology of said apparatus is:
1), steel send from unreeling machine, by toothed multiple roll descaling mill, the iron scale of broken steel surface;
2), the steel of crusher surface iron scale are sent into steel brush machine, the broken iron scale of peeling off is brushed off;
3), the steel that brush off iron scale are sent into another multiple roll polishing machine or sand mill with knife edge tooth, the loose iron scale root (Fe of steel surface will be remained in
3o
4, FeO) thoroughly remove;
4), the steel of processing in step 3) are sent in steel brush machine, steel surface is cleaned with water;
5), the steel of processing in step 4) are cleaned up with normal pressure clear water;
6), the steel of processing are sent into deactivation slot, carry out steel surface passivation in step 5);
7) steel, after passivation, shear on demand, batch,, when shearing, in the time of the operation of front and back, all can shear, to meet different demands.
The embodiment of the above is only the present invention's preferred embodiment, not limits practical range of the present invention with this, therefore the variation that all shapes according to the present invention, principle are done all should be encompassed in protection scope of the present invention.
Claims (2)
1. the process of steel surface anacidity de-scaling, is characterized in that: described method includes following steps:
1), steel are passed through to toothed multiple roll descaling mill, the iron scale of broken steel surface;
2), the steel of crusher surface iron scale are sent into steel brush machine, the broken iron scale of peeling off is brushed off;
3), the steel that brush off iron scale are sent into another multiple roll polishing machine or sand mill with knife edge tooth, the loose iron scale root (Fe of steel surface will be remained in
3o
4, FeO) thoroughly remove;
4), the steel of processing in step 3) are sent in steel brush machine, steel surface is cleaned with water;
5), the steel of processing in step 4) are cleaned up with normal pressure clear water;
6), the steel of processing are sent into deactivation slot, carry out steel surface passivation in step 5);
7) steel, after passivation, shear on demand, batch.
2. steel surface anacidity descaling device, is characterized in that: it includes the unreeling machine (1), cutter (2), bonding machine (3), multiple roll dephosphorizing machine (4), brush steel machine (5), multiple roll polishing machine (6), steel brush machine (7), water descaling mill (8), cutter (9), the winder (10) that form full-automatic assembly line; Steel band or wire rod are sent by unreeling machine (1), successively through after cutter (2), bonding machine (3), multiple roll dephosphorizing machine (4), brush steel machine (5), multiple roll polishing machine (6), steel brush machine (7), water descaling mill (8), cutter (9) by winder (10) rolling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094872.9A CN103878189A (en) | 2014-03-14 | 2014-03-14 | Acidless descaling technological method and descaling device for steel surfaces |
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|---|---|---|---|
| CN201410094872.9A CN103878189A (en) | 2014-03-14 | 2014-03-14 | Acidless descaling technological method and descaling device for steel surfaces |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312281A (en) * | 2015-11-20 | 2016-02-10 | 李晓勤 | Cleaning device for steel belt for plastic steel winding pipe |
| 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 |
| CN106180219A (en) * | 2016-09-18 | 2016-12-07 | 北京科技大学 | A kind of anacidity de-scaling produces supporting dedusting and cleaning plant |
| CN106625168A (en) * | 2016-10-21 | 2017-05-10 | 马鞍山钢铁股份有限公司 | Automatic descaling machine for billet |
| CN109097758A (en) * | 2017-06-21 | 2018-12-28 | 宝山钢铁股份有限公司 | A kind of hot rolling magnetic yoke steel long-acting antirust method and apparatus |
| CN110303127A (en) * | 2019-06-20 | 2019-10-08 | 河北永洋特钢集团有限公司 | A kind of online descaling device of conticaster |
| CN112620359A (en) * | 2020-12-15 | 2021-04-09 | 文春鱼 | Acid-free shot blasting rust removal process for hot-rolled steel coil |
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| JPS6043210B2 (en) * | 1976-03-01 | 1985-09-27 | 石川島播磨重工業株式会社 | Method and device for removing scale from hot-rolled steel strip or steel plate |
| JPS6340604B2 (en) * | 1981-02-18 | 1988-08-11 | Nippon Kokan Kk | |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| CN102151705A (en) * | 2010-12-30 | 2011-08-17 | 天津市润杰创新环保科技有限公司 | Device and method for removing oxide skins of steel belt without scouring |
| CN202462234U (en) * | 2012-03-07 | 2012-10-03 | 湖州金冶电子材料股份有限公司 | Production equipment for mechanical descaling of steel belt |
| CN202479239U (en) * | 2012-03-07 | 2012-10-10 | 湖州金冶电子材料股份有限公司 | Scale removing device of steel belts |
-
2014
- 2014-03-14 CN CN201410094872.9A patent/CN103878189A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043210B2 (en) * | 1976-03-01 | 1985-09-27 | 石川島播磨重工業株式会社 | Method and device for removing scale from hot-rolled steel strip or steel plate |
| JPS6340604B2 (en) * | 1981-02-18 | 1988-08-11 | Nippon Kokan Kk | |
| CN1864880A (en) * | 2006-06-20 | 2006-11-22 | 刘复麟 | An acidless descaling process for cold rolled steel strip and manufacturing device thereof |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| CN102151705A (en) * | 2010-12-30 | 2011-08-17 | 天津市润杰创新环保科技有限公司 | Device and method for removing oxide skins of steel belt without scouring |
| CN202462234U (en) * | 2012-03-07 | 2012-10-03 | 湖州金冶电子材料股份有限公司 | Production equipment for mechanical descaling of steel belt |
| CN202479239U (en) * | 2012-03-07 | 2012-10-10 | 湖州金冶电子材料股份有限公司 | Scale removing device of steel belts |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312281A (en) * | 2015-11-20 | 2016-02-10 | 李晓勤 | Cleaning device for steel belt for plastic steel winding pipe |
| 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 |
| 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 |
| CN106180219A (en) * | 2016-09-18 | 2016-12-07 | 北京科技大学 | A kind of anacidity de-scaling produces supporting dedusting and cleaning plant |
| CN106180219B (en) * | 2016-09-18 | 2018-08-03 | 北京科技大学 | A kind of anacidity de-scaling produces mating dedusting and cleaning plant |
| CN106625168A (en) * | 2016-10-21 | 2017-05-10 | 马鞍山钢铁股份有限公司 | Automatic descaling machine for billet |
| CN109097758A (en) * | 2017-06-21 | 2018-12-28 | 宝山钢铁股份有限公司 | A kind of hot rolling magnetic yoke steel long-acting antirust method and apparatus |
| CN110303127A (en) * | 2019-06-20 | 2019-10-08 | 河北永洋特钢集团有限公司 | A kind of online descaling device of conticaster |
| CN112620359A (en) * | 2020-12-15 | 2021-04-09 | 文春鱼 | Acid-free shot blasting rust removal process for hot-rolled steel coil |
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Application publication date: 20140625 |