CN102776345A - Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace - Google Patents
Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace Download PDFInfo
- Publication number
- CN102776345A CN102776345A CN2011101187948A CN201110118794A CN102776345A CN 102776345 A CN102776345 A CN 102776345A CN 2011101187948 A CN2011101187948 A CN 2011101187948A CN 201110118794 A CN201110118794 A CN 201110118794A CN 102776345 A CN102776345 A CN 102776345A
- Authority
- CN
- China
- Prior art keywords
- roller
- steel
- sleeve roller
- carbon sleeve
- nacl
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 50
- 238000000137 annealing Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000024121 nodulation Effects 0.000 title abstract 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 43
- 239000011780 sodium chloride Substances 0.000 claims abstract description 18
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000227 grinding Methods 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000010977 unit operation Methods 0.000 abstract description 2
- 230000001680 brushing effect Effects 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005097 cold rolling Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001464 adherent effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides a method for controlling panel strip steel continuous annealing furnace carbon sleeve roller nodulation, after cleaning and drying the surface of a steel strip, spraying or coating a saturated NaCl aqueous solution with the temperature of 50-100 ℃ on one surface contacting with a furnace roller, drying, and annealing according to a conventional process, so that tiny molten liquid drop-shaped NaCl is uniformly filled in tiny pores generated at the high temperature of a graphite carbon sleeve roller; and after the steel strip is taken out of the furnace, carrying out dry brushing or spraying, brushing and cleaning operations on the surface of the steel strip. NaCl plays a role in lubrication, reduces the friction between a steel belt and a carbon sleeve roller, fills micro pores on the surface of the carbon sleeve roller, and plays a role in preventing and controlling nodulation on the surface of the carbon sleeve roller, so that the replacement period of the carbon sleeve roller can be prolonged by more than one time, the defects of scratches and punch marks on the surface of the steel belt are greatly reduced, the surface quality of a steel plate is improved, the times of grinding rollers are reduced, the cost of spare parts and the production cost are reduced, and the product yield and the unit operation rate are improved.
Description
Technical field
The invention belongs to the steel rolling process technical field, the method for carbon cover roller dross in the stove in particularly a kind of prevention and the control cold rolled sheet steel continuous annealing process.
Background technology
Along with development and national economy; Demand to cold-rolled plate and strip increases day by day; Particularly auto sheet and cold rolling electrical steel product, and this series products generally adopts continuous annealing furnace to carry out high efficiency production in process of production, surface quality is excellent to obtain, the uniform strip product made from steel of performance.
Because graphite carbon sleeve furnace roller (carbon cover roller) can keep enough intensity in high-temperature service; Has the good high-temperature wear resisting property; And do not damage the surface quality of steel band, therefore the continuous annealing furnace of each cold rolling mill all adopts carbon cover roller to carry out the transmission and the conveying of steel band in the stove at present.
Yet, in the long-term production use, owing to exist friction, collision between carbon cover roller and steel band; Can adhere to or pile up dirt, iron filings and the iron sheet that steel band brings in carbon cover roller surface and the micropore; Under the elevated temperature heat state sintering, grow up, it is protruding to form hard, causes carbon cover roller dross.Knob can come off in friction and collision or in the grinding roller processing, but can form bigger space or dross substrate in position, and further causes the aggravation of knob to grow up.And the variation of furnace atmosphere in the heat treatment process, produce in frequent use and the difference of steel band and furnace roller travelling speed etc. of adjustment material all be the important factor of impelling the dross generation and growing up.
In case carbon cover roller dross will cause the steel strip surface that is in contact with it to scratch in heat treatment process, produces point-like and presses against seal, has a strong impact on the quality of finished product steel belt.The phenomenon that stops production because of carbon cover roller dross in the production process is not rarely seen; And repeatedly use along with grinding roller adjustment material; Carbon cover roller condition of surface also worsens day by day, causes and produces the just necessary blowing out roll change of one section all after date, and need for a long time carbon cover roller to be heat-treated.The employed carbon cover of continuous annealing furnace furnace roller quantity is many in addition, reaches nearly 200, has therefore not only increased the workload and the maintenance cost of roll change, and the replacement cost of carbon cover roller is very high.
Summary of the invention
The object of the present invention is to provide a kind of simplely, be convenient to operation, can effectively prevent and reduce carbon cover roller surface cord, prolong carbon cover roller life cycle, improve the control method of the strip steel continuous annealing furnace carbon cover roller dross of plate surface quality and production efficiency.
For this reason, the solution that the present invention taked is:
A kind of method of switchboard continuous strip annealing furnace carbon cover roller dross is characterized in that:
After the steel strip surface that needs continuous annealing carried out normal wash oven dry; Steel band contact furnace roller simultaneously spray or application temperature at 50-100 ℃ the saturated NaCl aqueous solution; Spray or apply after row oven dry again, make the NaCl crystal with the micro mist shape attached to scraggly steel strip surface;
Carry out anneal according to common process, make the NaCl that is small molten melt drop shape under the high temperature in steel band and carbon cover roller contact process, stick to carbon cover roller surface, and evenly be filled in the micro-pore that produces under the graphite carbon sleeve roller high temperature;
After steel band is come out of the stove, as required steel strip surface is done brush or flux spray, scrubbed and cleaning operation.
Said NaCl is the high purity N aCl of 800.7 ℃ of fusing points, 1465 ℃ of boiling points.
Beneficial effect of the present invention is:
Because the present invention carries out at needs being coated with the NaCl aqueous solution on the strip of continuous annealing; Not only between steel band and carbon cover roller, played lubrication; Reduced frictional force between steel band and the carbon cover roller; And the surperficial micro-pore of carbon cover roller under the NaCl of the molten melt drop shape meeting filled high-temperature state, play prevention and controlled the effect that carbon overlaps the roller surface cord, thereby can prolong the carbon cover roller replacement cycle more than one times; Greatly reduce steel strip surface and scratch and press against the seal defective, improve the surface quality of finished product steel plate.Simultaneously, can obviously reduce the grinding roller number of times, reduce spare part expense and production cost, improve product lumber recovery and unit operation rate.The present invention is simple, is convenient to operation and control, need not to change original production technique, just can stand and become effective.High purity N aCl physics used in the present invention and stable chemical performance, nontoxic pollution-free, possess the fusing point and the boiling point that adapt with thermal treatment temp; Both be convenient to coat operations, and be easy to again use and clean, and water soluble; Coordinate with the continuous annealing furnace atmosphere, do not have any untoward reaction.Especially be fit to the annealing production application of cold rolling electric.
Embodiment
Embodiment 1:
The cold rolling electric treatment production adopts the horizontal type multi-function continuous annealing furnace.
At first, be ready to 800.7 ℃ of fusing points, the high purity N aCl that boiling point is 1465 ℃, pollution-free to guarantee to be suitable for the cold rolling electric as-heat-treated condition to steel band and the whole facility of stove, in stove, have no adverse reaction, and dissolve and water with atmosphere.It is 60 ℃ the saturated NaCl aqueous solution that water is in harmonious proportion to temperature, and consumption can be adjusted according to water temperature.
According to normal process, steel strip surface is cleaned, after washing steel strip surface is dried.
With the one side that 60 ℃ that get ready the saturated NaCl aqueous solution evenly apply or spray overlaps roller at steel band contact carbon.Dry again after being coated with, make NaCl crystal after the oven dry with in the convex-concave hole of micro mist shape attached to steel strip surface.
Steel band after the oven dry is sent into continuous annealing furnace, and the NaCl of steel strip surface is small molten melt drop shape under furnace high-temperature, in steel band and carbon cover roller contact process, sticks to carbon cover roller surface, and at steel band and furnace roller surface lubricate.The adherent NaCl molten melt drop of institute will be filled in the micro-pore that produces graphite high temperature under on the carbon cover roller, and when reducing steel band and carbon cover roller frictional force, it is surperficial that isolated other material adhesion carbon overlaps roller.Produce by normally carrying out and controlling in the continuous annealing furnace.
After steel band is come out of the stove, cooled NaCl again with micro mist shape crystal attached to steel strip surface, as required steel strip surface is done brush or water spray, is scrubbed and cleaning operation.
Embodiment 2:
The cold rolling electric treatment production adopts the horizontal type multi-function continuous annealing furnace.
At first, be ready to 800.7 ℃ of fusing points, it is 85 ℃ the saturated NaCl aqueous solution that the high purity N aCl that boiling point is 1465 ℃, water are in harmonious proportion to temperature, and consumption can be adjusted according to water temperature.
According to normal process, steel strip surface is cleaned, after washing steel strip surface is dried.
With the one side that 85 ℃ that get ready the saturated NaCl aqueous solution evenly apply or spray overlaps roller at steel band contact carbon.Dry again after being coated with, make NaCl crystal after the oven dry with in the convex-concave hole of micro mist shape attached to steel strip surface.
Steel band after the oven dry is sent into continuous annealing furnace, and the NaCl of steel strip surface is small molten melt drop shape under furnace high-temperature, in steel band and carbon cover roller contact process, sticks to carbon cover roller surface, and at steel band and furnace roller surface lubricate.The adherent NaCl molten melt drop of institute will be filled in the micro-pore that produces graphite high temperature under on the carbon cover roller, and when reducing steel band and carbon cover roller frictional force, it is surperficial that isolated other material adhesion carbon overlaps roller.Produce by normally carrying out and controlling in the continuous annealing furnace.
After steel band is come out of the stove, cooled NaCl again with micro mist shape crystal attached to steel strip surface, as required steel strip surface is done brush or water spray, is scrubbed and cleaning operation.
Claims (2)
1. the method for switchboard continuous strip annealing furnace carbon cover roller dross is characterized in that:
After the steel strip surface that needs continuous annealing carried out normal wash oven dry; Steel band contact furnace roller simultaneously spray or application temperature at 50-100 ℃ the saturated NaCl aqueous solution; Spray or apply after row oven dry again, make the NaCl crystal with the micro mist shape attached to scraggly steel strip surface;
Carry out anneal according to common process, make the NaCl that is small molten melt drop shape under the high temperature in steel band and carbon cover roller contact process, stick to carbon cover roller surface, and evenly be filled in the micro-pore that produces under the graphite carbon sleeve roller high temperature;
After steel band is come out of the stove, as required steel strip surface is done brush or flux spray, scrubbed and cleaning operation.
2. the method for switchboard continuous strip annealing furnace carbon cover roller dross according to claim 1 is characterized in that said NaCl is the high purity N aCl of 800.7 ℃ of fusing points, 1465 ℃ of boiling points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110118794 CN102776345B (en) | 2011-05-10 | 2011-05-10 | Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110118794 CN102776345B (en) | 2011-05-10 | 2011-05-10 | Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102776345A true CN102776345A (en) | 2012-11-14 |
| CN102776345B CN102776345B (en) | 2013-11-06 |
Family
ID=47121447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110118794 Active CN102776345B (en) | 2011-05-10 | 2011-05-10 | Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102776345B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290200A (en) * | 2013-06-18 | 2013-09-11 | 河北省首钢迁安钢铁有限责任公司 | Method for treating accretions of roller with carbon sleeve for continuous annealing furnace |
| CN104177097A (en) * | 2014-08-12 | 2014-12-03 | 杨清泉 | Special graphite carbon sleeved roller for corrosion-resistant and abrasion-resistant continuous annealing line and manufacturing process thereof |
| CN108857688A (en) * | 2018-06-27 | 2018-11-23 | 湖北红业建材科技开发有限公司 | A kind of graphite carbon sleeve removes tumor device and online except tumor method |
| CN110724812A (en) * | 2019-10-10 | 2020-01-24 | 邯郸钢铁集团有限责任公司 | Method for eliminating furnace roller indentation defect of continuous annealing furnace |
| CN111100972A (en) * | 2020-02-26 | 2020-05-05 | 江苏省沙钢钢铁研究院有限公司 | Method for preventing carbon sleeve roller of continuous annealing furnace from nodulation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Control and treatment method for carbon sleeve furnace bottom roller accretion |
-
2011
- 2011-05-10 CN CN 201110118794 patent/CN102776345B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Control and treatment method for carbon sleeve furnace bottom roller accretion |
Non-Patent Citations (1)
| Title |
|---|
| 杨振东: "中厚板无抛丸常化炉炉辊结瘤控制", 《轧钢》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290200A (en) * | 2013-06-18 | 2013-09-11 | 河北省首钢迁安钢铁有限责任公司 | Method for treating accretions of roller with carbon sleeve for continuous annealing furnace |
| CN103290200B (en) * | 2013-06-18 | 2015-01-28 | 北京首钢股份有限公司 | Method for treating accretions of roller with carbon sleeve for continuous annealing furnace |
| CN104177097A (en) * | 2014-08-12 | 2014-12-03 | 杨清泉 | Special graphite carbon sleeved roller for corrosion-resistant and abrasion-resistant continuous annealing line and manufacturing process thereof |
| CN104177097B (en) * | 2014-08-12 | 2015-12-09 | 杨清泉 | A kind of corrosion-resisting wear-proof continuous annealing line special graphite carbon cover roller and manufacturing process thereof |
| CN108857688A (en) * | 2018-06-27 | 2018-11-23 | 湖北红业建材科技开发有限公司 | A kind of graphite carbon sleeve removes tumor device and online except tumor method |
| CN108857688B (en) * | 2018-06-27 | 2019-12-10 | 湖北红业建材科技开发有限公司 | Online graphite carbon sleeve tumor removing device and method |
| CN110724812A (en) * | 2019-10-10 | 2020-01-24 | 邯郸钢铁集团有限责任公司 | Method for eliminating furnace roller indentation defect of continuous annealing furnace |
| CN110724812B (en) * | 2019-10-10 | 2021-03-09 | 邯郸钢铁集团有限责任公司 | Method for eliminating furnace roller indentation defect of continuous annealing furnace |
| CN111100972A (en) * | 2020-02-26 | 2020-05-05 | 江苏省沙钢钢铁研究院有限公司 | Method for preventing carbon sleeve roller of continuous annealing furnace from nodulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102776345B (en) | 2013-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102776345B (en) | Method for controlling nodulation of carbon sleeve roller of strip steel continuous annealing furnace | |
| CN101906529B (en) | Control and treatment method for carbon sleeve furnace bottom roller accretion | |
| CN101698197B (en) | Novel process for on-line removing of scale at surface of hot-rolled copper plate belt | |
| CN106111435A (en) | A kind of rustless steel anti-fingerprint paint line | |
| CN110499485B (en) | Alloying treatment method for preparing high-pulverization-resistance hot-dip galvanized coating | |
| CN102776347A (en) | Online grinding method for carbon sleeve furnace bottom roller | |
| CN107488782B (en) | A kind of hot galvanizing Horizental annealer furnace rolls face foreign matter sweep-out method | |
| CN102828014B (en) | Method for controlling nodulation of bottom roller of carbon sleeve furnace | |
| CN110438428A (en) | A kind of production method of continuous hot galvanizing matrixes for embossing | |
| CN102676974A (en) | Thermal spraying galvanizing method of thin plate | |
| CN102851477A (en) | Method for reducing furnace bottom roller indentation defects on surface of steel plate | |
| CN102636041B (en) | Continuous heat treatment furnace with function of clearing metal accretions on furnace rollers and process method for clearing accretions on furnace rollers | |
| CN209161848U (en) | A kind of wiping roller arrangement for transition roller table | |
| CN102310096B (en) | Degreasing method of surface of titanium and titanium alloy tape volume | |
| CN109695012A (en) | Production method of high-belt-speed thin-specification galvanized plate | |
| CN113802079B (en) | Method for producing high-surface-quality aluminized silicon steel strip | |
| CN104556718A (en) | Roller coating production method of AR (anti-reflection) coated photovoltaic glass | |
| CN102776351B (en) | Method for treating accretions on furnace bottom roller of carbon sleeve of two-section type continuous annealing furnace | |
| CN201424498Y (en) | Hot galvanizing mechanism | |
| CN104694942A (en) | Hot-rolled pickled plate producing method and hot-rolled pickled plate pickling system | |
| CN201500683U (en) | Device for online removing oxide skin on surface of hot-rolling copper plate strip | |
| CN103706641A (en) | Method for removing incrustation on surface of coiling block inside coiler furnace | |
| CN104233151A (en) | Continuous aluminum and zinc hot-dip plating strip steel production process | |
| CN103641329B (en) | The preparation method of sunlight controlling coated glass | |
| CN108687134B (en) | Method for reducing thermal stress spalling of roller oxide film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |