CN106825080A - Method for removing red rust defect of steel for automobile plate - Google Patents
Method for removing red rust defect of steel for automobile plate Download PDFInfo
- Publication number
- CN106825080A CN106825080A CN201710018587.2A CN201710018587A CN106825080A CN 106825080 A CN106825080 A CN 106825080A CN 201710018587 A CN201710018587 A CN 201710018587A CN 106825080 A CN106825080 A CN 106825080A
- Authority
- CN
- China
- Prior art keywords
- straightening
- steel
- red rust
- acid
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 33
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 230000007547 defect Effects 0.000 title claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 28
- 238000005554 pickling Methods 0.000 claims abstract description 27
- 238000003780 insertion Methods 0.000 claims abstract description 17
- 230000037431 insertion Effects 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 238000005406 washing Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910000794 TRIP steel Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910052840 fayalite Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention belongs to the technical field of steel rolling, and discloses a method for removing red rust defects of steel for automobile plates, which comprises the following steps: controlling the speed of an acid washing process, the withdrawal and straightening insertion amount, the withdrawal and straightening elongation, the acid liquor concentration and the acid liquor temperature parameter in the steel rolling process flow; wherein the speed range of the pickling process is as follows: 80-110 m/min; the withdrawal and straightening insertion amount range is as follows: -28 to-40 mm; the withdrawal and straightening elongation range is as follows: 1% -1.5%; the acid washing concentration range is as follows: 50 +/-5 g/L; the acid liquid temperature parameter range is as follows: 75-85 ℃. The invention can provide a method for removing the red rust defect of the strip steel and improving the surface quality.
Description
Technical field
The present invention relates to technical field of steel rolling, more particularly to a kind of method for removing Automobile Plate steel red rust defect.
Background technology
As auto industry develops towards loss of weight, energy-conservation and raising security direction, with dual phase steel and phase-change induced plastic
Steel is that the application of the high strength car sheet of representative is more and more extensive, and the application of dual phase steel and transformation induced plasticity steel Automobile Plate not only may be used
It is the important materials for realizing body lightening with saving steel, moreover it is possible to reduce oil consumption.
However, dual phase steel and transformation induced plasticity steel to realize the characteristics such as high intensity, low surrender, high-elongation, it is necessary to
Matrix adds certain Si elements, and Si elements easily cause belt steel surface to produce red rust defect.Red rust defect is mainly Si units
Element forms fayalite phase Fe2SiO4 between band steel matrix and iron oxide cortex, and fayalite has adhesion with respect to iron scale
Effect, makes the scale defect of belt steel surface be difficult to remove.
The content of the invention
The present invention provides a kind of method for removing Automobile Plate steel red rust defect, solves the oxidation of steel surface in the prior art
Iron sheet defect is difficult to the technical problem to remove.
In order to solve the above technical problems, the invention provides a kind of method for removing Automobile Plate steel red rust defect, including：
In control steel rolling process flow, pickling process speed, straightening insertion, straightening elongation percentage, acid strength and acid
Liquid temperature parameter；
Wherein, the pickling process velocity interval：80~110m/min；The straightening insertion scope：- 28~-40mm；
The straightening elongation percentage scope：1%~1.5%；The pickling concentration range：50±5g/L；The acid liquor temperature parameter area：
75~85 DEG C.
Further, the pickling process speed is 100m/min；The straightening insertion is -35mm；The straightening is prolonged
It is 1% to stretch rate；The pickling concentration is 55g/L；80 DEG C of the acid liquor temperature parameter.
Further, the pickling process speed is 115m/min；The straightening insertion is -37mm；The straightening is prolonged
It is 1.1% to stretch rate；The pickling concentration is 52g/L；78 DEG C of the acid liquor temperature parameter.
Further, the pickling process speed is 97m/min；The straightening insertion is -38mm；The straightening extends
Rate is 1.1%；The pickling concentration is 54g/L；82 DEG C of the acid liquor temperature parameter.
Further, the acid solution is hydrochloric acid.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The removal Automobile Plate provided in the embodiment of the present application method of steel red rust defect, for dual phase steel and phase-change induced
Plasticity steel, using rational pickling parameter combination, obtains the red rust of belt steel surface and crushes to a certain extent, and improves and acid solution
Time of contact and area so that the scale defect of belt steel surface is easily removed, so that the red rust area of belt steel surface is reduced,
Improve the surface quality of final finished.
Specific embodiment
The embodiment of the present application solves steel in the prior art by providing a kind of method for removing Automobile Plate steel red rust defect
The scale defect on surface is difficult to the technical problem to remove；The technique effect of lifting strip surface quality is reached.
In order to be better understood from above-mentioned technical proposal, above-mentioned technical proposal is carried out below in conjunction with specific embodiment
Describe in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the detailed of technical scheme
Illustrate, rather than the restriction to technical scheme, in the case where not conflicting, in the embodiment of the present application and embodiment
Technical characteristic can be mutually combined.
A kind of method for removing Automobile Plate steel red rust defect, including：
In control steel rolling process flow, pickling process speed, straightening insertion, straightening elongation percentage, acid strength and acid
Liquid temperature parameter；
Wherein, the pickling process velocity interval：80~110m/min；The straightening insertion scope：- 28~-40mm；
The straightening elongation percentage scope：1%~1.5%；The pickling concentration range：50±5g/L；The acid liquor temperature parameter area：
75~85 DEG C.
The acid solution is hydrochloric acid.
Combined by above-mentioned parameter, dual phase steel and transformation induced plasticity steel belt steel surface red rust phenomenon, red rust face can be reduced
Product at least reduces 10%.
Lower mask body provides three embodiment explanation parameter combination schemes.
Embodiment 1
The product specification of the present embodiment is：Trimmed size 1250mm × 1.5mm；The percentage by weight of product composition is：C：
0.084%th, Mn：1.80%th, Si：0.45%th, P：0.014%th, S：0.001%, remaining is impurity and Fe.
Manufacturing parameter：
Pickling speed is 100m/min.
Straightening insertion is -35mm.
Straightening elongation percentage is 1.0%.
The free acid concentration of 1# groove hydrochloric acid is 55g/l.
Hydrochloric acid temperature is 80 DEG C.
The surface of steel plate table inspection instrument detection more conventional control method of red rust area reduces 15%.
Embodiment 2
The product specification of the present embodiment is：Trimmed size 1200mm × 1.7mm；The percentage by weight of product composition is：C：
0.081%th, Mn：1.81%th, Si：0.47%th, P：0.009%th, S：0.003%, remaining is impurity and Fe.
Manufacturing parameter：
Pickling speed is 115m/min.
Straightening insertion is -37mm.
Straightening elongation percentage is 1.1%.
The free acid concentration of 1# groove hydrochloric acid is 52g/l.
Hydrochloric acid temperature is 78 DEG C.
The surface of steel plate table inspection instrument detection more conventional control method of red rust area reduces 12%.
Embodiment 3
The product specification of the present embodiment is：Trimmed size 1320mm × 1.0mm；The percentage by weight of product composition is：C：
0.075%th, Mn：1.83%th, Si：0.47%th, P：0.009%th, S：0.001%, remaining is impurity and Fe.
Manufacturing parameter：
Pickling speed is 97m/min.
Straightening insertion is -38mm.
Straightening elongation percentage is 1.1%.
The free acid concentration of 1# groove hydrochloric acid is 54g/l.
Hydrochloric acid temperature is 82 DEG C.
The surface of steel plate table inspection instrument detection more conventional control method of red rust area reduces 14%.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The removal Automobile Plate provided in the embodiment of the present application method of steel red rust defect, for dual phase steel and phase-change induced
Plasticity steel, using rational pickling parameter combination, obtains the red rust of belt steel surface and crushes to a certain extent, and improves and acid solution
Time of contact and area so that the scale defect of belt steel surface is easily removed, so that the red rust area of belt steel surface is reduced,
Improve the surface quality of final finished.
It should be noted last that, above specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should cover
In the middle of scope of the presently claimed invention.
Claims (5)
1. it is a kind of to remove the Automobile Plate method of steel red rust defect, it is characterised in that including：
In control steel rolling process flow, pickling process speed, straightening insertion, straightening elongation percentage, acid strength and acid solution temperature
Degree parameter；
Wherein, the pickling process velocity interval：80~110m/min；The straightening insertion scope：- 28~-40mm；It is described
Straightening elongation percentage scope：1%~1.5%；The pickling concentration range：50±5g/L；The acid liquor temperature parameter area：75~
85℃。
2. the method for removing Automobile Plate steel red rust defect as claimed in claim 1, it is characterised in that：The pickling process speed
It is 100m/min to spend；The straightening insertion is -35mm；The straightening elongation percentage is 1%；The pickling concentration is 55g/L；Institute
State 80 DEG C of acid liquor temperature parameter.
3. the method for removing Automobile Plate steel red rust defect as claimed in claim 1, it is characterised in that：The pickling process speed
It is 115m/min to spend；The straightening insertion is -37mm；The straightening elongation percentage is 1.1%；The pickling concentration is 52g/L；
78 DEG C of the acid liquor temperature parameter.
4. the method for removing Automobile Plate steel red rust defect as claimed in claim 1, it is characterised in that：The pickling process speed
It is 97m/min to spend；The straightening insertion is -38mm；The straightening elongation percentage is 1.1%；The pickling concentration is 54g/L；
82 DEG C of the acid liquor temperature parameter.
5. the method for steel red rust defect of the removal Automobile Plate as described in 1~any one of claim, it is characterised in that：The acid
Liquid is hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018587.2A CN106825080A (en) | 2017-01-11 | 2017-01-11 | Method for removing red rust defect of steel for automobile plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018587.2A CN106825080A (en) | 2017-01-11 | 2017-01-11 | Method for removing red rust defect of steel for automobile plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106825080A true CN106825080A (en) | 2017-06-13 |
Family
ID=59118205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018587.2A Pending CN106825080A (en) | 2017-01-11 | 2017-01-11 | Method for removing red rust defect of steel for automobile plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106825080A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015108A (en) * | 2019-12-19 | 2020-04-17 | 北京首钢股份有限公司 | Method for controlling surface defects of pickled plate |
| CN111501052A (en) * | 2019-01-30 | 2020-08-07 | 宝山钢铁股份有限公司 | Pickling process method for high-temperature coil material and application |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202002A (en) * | 1991-05-14 | 1993-04-13 | Nippon Steel Corporation | Process for pickling steel-based metallic materials at a high speed |
| JPH111787A (en) * | 1997-06-06 | 1999-01-06 | Nippon Steel Corp | Pickling treatment method of steel strip and its device |
| CN1401015A (en) * | 2000-02-16 | 2003-03-05 | Sms迪马格股份公司 | Method and device for pickling rolled metal, in particular steel strip |
| CN104588418A (en) * | 2014-11-28 | 2015-05-06 | 首钢总公司 | Method for overcoming defect of pocks on surface of ultra-low carbon steel |
| CN105256323A (en) * | 2015-11-04 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous acid pickling method for hot-rolled dual-phase steel |
| CN106011632A (en) * | 2016-07-15 | 2016-10-12 | 武汉钢铁股份有限公司 | High-surface-quality hot-rolled pickling steel with tensile strength being 440 MPa and for automobiles and production method |
-
2017
- 2017-01-11 CN CN201710018587.2A patent/CN106825080A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5202002A (en) * | 1991-05-14 | 1993-04-13 | Nippon Steel Corporation | Process for pickling steel-based metallic materials at a high speed |
| JPH111787A (en) * | 1997-06-06 | 1999-01-06 | Nippon Steel Corp | Pickling treatment method of steel strip and its device |
| CN1401015A (en) * | 2000-02-16 | 2003-03-05 | Sms迪马格股份公司 | Method and device for pickling rolled metal, in particular steel strip |
| CN104588418A (en) * | 2014-11-28 | 2015-05-06 | 首钢总公司 | Method for overcoming defect of pocks on surface of ultra-low carbon steel |
| CN105256323A (en) * | 2015-11-04 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous acid pickling method for hot-rolled dual-phase steel |
| CN106011632A (en) * | 2016-07-15 | 2016-10-12 | 武汉钢铁股份有限公司 | High-surface-quality hot-rolled pickling steel with tensile strength being 440 MPa and for automobiles and production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501052A (en) * | 2019-01-30 | 2020-08-07 | 宝山钢铁股份有限公司 | Pickling process method for high-temperature coil material and application |
| CN111015108A (en) * | 2019-12-19 | 2020-04-17 | 北京首钢股份有限公司 | Method for controlling surface defects of pickled plate |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 063200 Hebei Province, Tangshan City Caofeidian Industrial Zone Applicant after: Shougang Jingtang United Iron & Steel Co., Ltd. Applicant after: SHOUGANG GROUP Co.,Ltd. Address before: 063200 Hebei Province, Tangshan City Caofeidian Industrial Zone Applicant before: Shougang Jingtang United Iron & Steel Co., Ltd. Applicant before: SHOUGANG Corp. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |