CN105925900A - Hot-rolled pickled steel with tensile strength of 400MPa grade and used for high-surface quality automobiles, and production method thereof - Google Patents
Hot-rolled pickled steel with tensile strength of 400MPa grade and used for high-surface quality automobiles, and production method thereof Download PDFInfo
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- CN105925900A CN105925900A CN201610556967.7A CN201610556967A CN105925900A CN 105925900 A CN105925900 A CN 105925900A CN 201610556967 A CN201610556967 A CN 201610556967A CN 105925900 A CN105925900 A CN 105925900A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
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- 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
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Metal Rolling (AREA)
Abstract
Hot-rolled pickled steel with the tensile strength of 400MPa grade and used for high-surface quality automobiles comprises 0.070-0.100wt% of C, 0.080wt% or less of Si, 0.700-1.100wt% of Mn, 0.025wt% or less of P, 0.008wt% or less of S and 0.015-0.045wt% of Als. A production method of the hot-rolled pickled steel comprises the following steps: routinely smelting above components, and continuously casting the smelted components to form a blank; heating the cast blank; carrying out hot rolling on the heated blank; reeling the hot-rolled blank; carrying out laminar cooling; and pickling the cooled blank. Surplus power of a cold rolling and pickling combination production line is used to produce the hot-rolled pickled steel for automobiles, the last frame of five frames is used to control the surface roughness of pickled steel to make the surface roughness of the above product be 1.0-1.6[mu]m, the production cost of ton steel is 15% or more lower than that in the prior art, the hot-rolled pickled steel has good ductility, cold stamping moldability, weldability and cold bending property, and high standard manufacturing requirements of the hot-rolled pickled steel for automobiles are completely met.
Description
Technical field
The present invention relates to a kind of Automobile Plate and production method thereof, specifically belong to a kind of high surface of tensile strength 400MPa level
Quality automobile hot rolling acid-cleaning steel and production method.
Background technology
Along with the continuous aggravation that steel and iron industry production capacity entirety is superfluous, low cost manufactures product increasingly by steel industry
Pay attention to；And on the other hand auto industry is developing rapidly, the demand of automobile steel is increasing, and the competition of industry is the most increasingly
Fierceness, therefore the control to material cost is most important.Steel and iron industry and the current situation of auto industry, further promote
The automobile application of hot rolling acid-cleaning steel and development.
Automobile with hot rolling acid-cleaning steel thickness typically in the scope of 2.0 ~ 6.0 mm, it is desirable to great surface quality, in order to meet vapour
The car strict standard to ferrous materials, it is desirable to must not have bubble, crackle on the surface of strip steel, scab, fold and be mingled with etc. making
By harmful defect, also must not have more than the defect affecting strip steel forming property partly of belt steel thickness tolerance, such as scratch, press
The defects such as trace, pit, roll marks.Automobile hot rolling acid-cleaning steel primary crossbeam in chassis system, auxiliary girder, front in passenger car
Bridge, back axle；Wheel hub in wheel system, spoke；Structural member in bodywork system and safety member；Force structure in seat system
Part and safety member, one passenger car pickling steel consumption about 100kg of total.And at the bottom of the driver's cabin safeguard construction part of commercial car, compartment
Plates etc. all use hot rolling acid-cleaning Steel material, amount to a commercial car pickling steel consumption about 16kg.
The feature of automobile hot rolling acid-cleaning steel is as follows: compared with plate general with hot rolling, and automobile hot rolling acid-cleaning steel has following
Advantage: one is great surface quality, because eliminating the iron scale of belt steel surface, strip surface quality is improved, and improves
The welding performance of material and paintability, and significantly improve the appearance of strip steel, it is preferable automobile structure material；Two
Being high dimensional accuracy, after the flattened technique of automobile hot rolling acid-cleaning steel, its template is optimized, thus decreases strip profile and flatness
The defect of difference.Compared with cold rolling plate, on the premise of ensureing that strip surface quality uses requirement, automobile hot rolling acid-cleaning steel
" with hot Dai Leng " can reduce production cost for steel mill, reduce purchase cost for user.
At home and abroad some large iron and steel enterprise has the continuous way hot rolling acid-cleaning steel production line of specialty, and some iron and steel is looked forward to
Industry only has plug-type hot rolling acid-cleaning steel production line；Have hot rolling acid-cleaning steel production line or not, its production hot rolling of can only entrusting outward
Pickling steel.It is guaranteed that continuous way hot rolling acid-cleaning steel production line produces automobile hot rolling acid-cleaning steel quality, but equipment investment cost
The highest；Although plug-type hot rolling acid-cleaning steel production line produces hot rolling acid-cleaning steel cost with outer committee and reduces, quality can not get protecting
Barrier, especially produces and has the automobile hot rolling acid-cleaning steel of great surface quality requirement not ensure, furthermore, pickling steel surface roughness
Uncontrollable, and requirement can not be met.
Through preliminary search, Chinese Patent Application No. is the document of 201210298259.X, disclose a kind of thickness≤
The 1.8mm automobile production method of Thin Specs hot rolling acid-cleaning steel, it uses Thin Specs CSP technique to produce, and the chemical composition of steel is pressed
Percetage by weight content is: C0.04 ~ 0.07%, Si0.10 ~ 0.30%, Mn0.60 ~ 1.30%, P≤0.025%, S≤
0.012%, Ti0.02 ~ 0.04%, Als0.010 ~ 0.030%；Sheet billet produces thickness≤1.8mm.Tensile strength >=400MPa.
Production stage: desulfurizing iron, stove are smelted and Alloying Treatment；Ladle furnace processes；Continuous casting and rolling；Water under high pressure dephosphorization, Stress control
At 25 ~ 35MPa；Controlled rolling, section cooling, batch, pickling, smooth, control smooth elongation percentage less than 2%；Finishing, adopts
Use Electrostatic greasing.Its deficiency existed: owing to CSP produces line, the compression ratio and the steel composition range that limit steel rolling are narrow
Narrow, the more conventional hot steel rolling production of the steel plate template of production, surface quality, mechanical property is poor, it is impossible to meet great surface quality vapour
The requirement of automobile-used hot rolling acid-cleaning steel.
Chinese Patent Application No. is the document of 201310731354.9, discloses a kind of 380MPa level one side enamel high
Intensity deep-draw hot rolling acid-cleaning steel plate, its chemical composition mass percent is: Mn0.35-0.65%, Als0.015-0.045%,
Ti: 0.030-0.060%, S: 0.008-0.016%, C≤0.018%, Si≤0.05%, P≤0.020%, N≤
0.006%.Yield strength >=the 380MP of the steel of example steel, elongation percentage more than 35%, the present invention coordinates controlled rolling and controls cold
But the enamelware that the enamel that technology produces makes through wet method or electrostatic one side enamel technology is quick-fried without squama, and adhesion property is good,
Meet 20,000 times 1～9bar circulating chilled water hydraulic pressure fatigue tests.Its deficiency existed: this steel production cost is higher, and Ti content is relatively
Greatly, the mechanical property of steel plate is the most relatively low, belongs to the production category of glassed steel, it is impossible to replace great surface quality automobile hot rolling acid-cleaning
Steel uses.
Summary of the invention
The invention reside in the deficiency overcoming prior art to exist, it is provided that a kind of before ensureing armor plate strength and serviceability
Putting, steel surface roughness is in 1.0 ~ 1.6 μm, and production cost reduction is not less than the 15% high surface of tensile strength 400MPa level
Quality automobile hot rolling acid-cleaning steel and production method.
Realize the technical measures of above-mentioned purpose:
Tensile strength is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, and its component and weight percent content be: C:
0.070～0.100%, Si≤0.080%, Mn:0.700～1.100%, P≤0.025%, S≤0.008%, Als:0.015～
0.045%, remaining is ferrum and inevitable impurity；Surface roughness: Ra:1.0～1.6 μm.
It is: C:0.070～0.085%.
It is: Mn:0.700～0.850%.
It is: Als:0.032～0.040%.
Producing the method that tensile strength is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, it is: its step:
1) routine is smelted and is casting continuously to form base；
2) heating strand, heating-up temperature is 1240 ~ 1280 DEG C；
3) carrying out hot rolling, and control roughing outlet temperature at 1040 ~ 1080 DEG C, finish rolling finishing temperature is at 820 ~ 860 DEG C；
4) batch, control coiling temperature at 590 ~ 630 DEG C；
5) section cooling is carried out, segmentation cooling before using, and control rate of cooling and be not less than 24 DEG C/s；
6) acid cleaning process is carried out
A, carry out uncoiling and align；
B, take elongation control pattern to carry out straightening, control its elongation percentage 1.0～2.0%；
Use three descaling bath acid to roll and online carry out pickling, wherein require: 1# descaling bath: total acid concentration is 180～200g/L
Pickle, Fe concentration is at 105～125g/L pickles, and the concentration of free acid is at 35～55g/L pickles, and pickling temperature is 80
～95 DEG C；2# descaling bath: total acid concentration is at 180～200g/L pickles, and Fe concentration is at 75～95g/L pickles, free acid
Concentration at 85～105g/L pickles, pickling temperature is at 80～95 DEG C；3# descaling bath: total acid concentration about 180～200g/L
Pickle, Fe concentration is at 25～45g/L pickles, and the concentration of free acid is at 145～165g/L pickles, and temperature is 80～95
℃；Corrosion inhibiter is added according to 14～16g/L pickles in each descaling bath；And control total pickling time less than 22 seconds；
C, rinsing, potcher uses level Four ladder-type cell body, and rinses by the mode of countercurrently hydro-peening；Control rinsing section
PH value is not less than 5.0, and electrical conductivity does not surpass 55 μ s/cm: and add corrosion inhibiter according to 14～16g/L pickles in potcher；
D, dry, utilize compressed air will accumulate in the residual liquid outer side-blown brush to steel band on steel band both sides, and control to be dried
Temperature is at 110～130 DEG C；
E, carrying out cold rolling levelling, smooth rate is set to 0.8～2.8%, and leveling roll Ra is 2.5～3.0 μm；And make calibrator whole process throw
Enter to use；
F, carry out conventional Electrostatic greasing.
Each element and the effect of main technique and mechanism in the present invention
Carbon: carbon is intensified element most economical in mild steel, but too high levels reduces plasticity and the impact flexibility of steel, dislikes
Change cold formability and welding performance.The increase of carbon equivalent also makes the qualification rate of the cold-bending property of steel plate reduce.It is thus desirable to protecting
On the premise of card intensity, the content reducing carbon as far as possible.So, according to actual needs its content is limited to 0.070～
The scope of 0.100%.
Silicon: silicon is cheap and effective deoxygenation of liquid steel element.But its content is more than 0.300%, then can deteriorate hot rolled steel plate
Surface quality, and then affect the surface quality of pickling steel, particularly disadvantageous for great surface quality automobile hot rolling acid-cleaning steel.Institute
With, its content is limited to less than 0.080% scope.
Manganese: manganese is to improve intensity and the maximally effective element of toughness, and manganese can expand austenitic area, can improve the intensity of steel-
Extend balance.But the ductility of steel and impact property can be produced serious influence by too high Mn content.In consideration of it, by it
Content is limited to 0.700～1.100% scope.
Phosphorus: phosphorus is the element of the intensity that can improve steel, but it is reduction of the plasticity of steel, also unfavorable to welding performance, and
Increase the sensitivity of weld cracking, therefore, be a kind of harmful element in automobile hot rolling acid-cleaning steel, phosphorus should be reduced as far as possible
Content in steel.And phosphorus easily causes center segregation of casting blank, cause cold bending performance, toughness to deteriorate, therefore, set it
Upper content limit is 0.025%.
Sulfur: sulfur is very harmful element.Sulfur in steel mainly presented in (Mn, Fe) S is mingled with in steel, this
Sulphide inculsion is the most disadvantageous to the impact flexibility of steel, cold-bending property, plasticity etc., and causes each to different of plate property
Property, therefore, need to sulfur content in steel be controlled the lowest more good.Based on the consideration to steel plate cold bending forming technology and manufacturing cost,
Plan sulfur content in steel to control below 0.008%.
Aluminum: aluminum adds for deoxidation, when Als content is less than 0.010%, it is impossible to play its effect；The opposing party
Face, aluminum affects the welding performance of steel, and the aluminum adding volume easily forms aluminium oxide agglomerate.Therefore, Als content is limited to 0.015
～0.045% scope.
The production capacity more than needed that the present invention utilizes cold rolling acid to roll on-line production line produces automobile hot rolling acid-cleaning steel, utilizes five frames
Last frame the surface roughness of pickling steel is controlled, make the surface roughness of product a rational scope
In, reach a great surface quality standard, meet the use requirement of automobile hot rolling acid-cleaning steel.The most effectively make use of and set
Standby ability, adds again economic benefit.
The operation that whole pickling steel rolls online production in acid is: uncoiling → aligning → cutting head cutting tail → welding → straightening → acid
Wash (adding corrosion inhibiter) → rinse (adding corrosion inhibiter) → drying → cutting edge → smooth → batch → finishing → oiling → pickling finished product.
In the present invention, in pickling and potcher, why add corrosion inhibiter, it is therefore intended that prevent strip steel in acid solution and
In rinsing, the time of staying is long and produce overpickling situation, thus obtains the hot rolling acid-cleaning steel band of excellent surface quality, to meet
Constantly require the growth requirement of high-quality auto industry.
The present invention compared with prior art, its have good ductility, cold stamping forming property, welding performance and
Cold-bending property is good, and the chemical composition of steel plate and stable mechanical performance, and cold stamping forming property is good, and has high surface matter
Amount, is fully able to meet the high standard manufacture requirements of automobile hot rolling acid-cleaning steel.Engine bracker through the automobile that test is manufactured
With subframe, the parts being manufactured into are tested, find the detections such as the coating performance of part, dimensional accuracy, welding performance
Result all meets the standard-required of this Automobile Enterprises.
Accompanying drawing explanation
Fig. 1 is the metallurgical structure figure of the present invention.
Detailed description of the invention
Below the present invention is described in detail:
Table 1 is the component value list of various embodiments of the present invention and comparative example；
Table 2 be various embodiments of the present invention and comparative example pickling before main technologic parameters value list；
Table 3 is various embodiments of the present invention and the pickling of comparative example and rinsing process parameter value list；
Table 4 is various embodiments of the present invention and comparative example performance test results list.
Various embodiments of the present invention all produce according to following steps:
1) routine is smelted and is casting continuously to form base；
2) heating strand, heating-up temperature is 1240 ~ 1280 DEG C；
3) carrying out hot rolling, and control roughing outlet temperature at 1040 ~ 1080 DEG C, finish rolling finishing temperature is at 820 ~ 860 DEG C；
4) batch, control coiling temperature at 590 ~ 630 DEG C；
5) section cooling is carried out, segmentation cooling before using, and control rate of cooling and be not less than 24 DEG C/s；
6) acid cleaning process is carried out
A, carry out uncoiling and align；
B, take elongation control pattern to carry out straightening, control its elongation percentage 1.0～2.0%；
Use three descaling bath acid to roll and online carry out pickling, wherein require: 1# descaling bath: total acid concentration is 180～200g/L
Pickle, Fe concentration is at 105～125g/L pickles, and the concentration of free acid is at 35～55g/L pickles, and pickling temperature is 80
～95 DEG C；2# descaling bath: total acid concentration is at 180～200g/L pickles, and Fe concentration is at 75～95g/L pickles, free acid
Concentration at 85～105g/L pickles, pickling temperature is at 80～95 DEG C；3# descaling bath: total acid concentration about 180～200g/L
Pickle, Fe concentration is at 25～45g/L pickles, and the concentration of free acid is at 145～165g/L pickles, and temperature is 80～95
℃；Corrosion inhibiter is added according to 14～16g/L pickles in each descaling bath；And control total pickling time less than 22 seconds；
C, rinsing, potcher uses level Four ladder-type cell body, and rinses by the mode of countercurrently hydro-peening；Control rinsing section
PH value is not less than 5.0, and electrical conductivity does not surpass 55 μ s/cm: and add corrosion inhibiter according to 14～16g/L pickles in potcher；
D, dry, utilize compressed air will accumulate in the residual liquid outer side-blown brush to steel band on steel band both sides, and control to be dried
Temperature is at 110～130 DEG C；
E, carrying out cold rolling levelling, smooth rate is set to 0.8～2.8%, and leveling roll Ra is 2.5～3.0 μm；And make calibrator whole process throw
Enter to use；
F, carry out conventional Electrostatic greasing.
Chemical composition value list (wt.%) of table 1 various embodiments of the present invention and comparative example steel
Main technologic parameters value list before the pickling of table 2 various embodiments of the present invention and comparative example
Table 3 various embodiments of the present invention and the pickling of comparative example and rinsing, Hot Air Dying Technology Parameters value list
Note: in table 3, l is every liter of pickle；Rinsing medium is condensed water or desalted water；Dry and use compressed air.
The performance test results list of table 4 various embodiments of the present invention and comparative example product
Can know from table 4, steel of the present invention is mainly the automobile hot rolling acid-cleaning steel of more than 2.0mm regular size, due to tool
Having good comprehensive mechanical property, tensile strength is moderate, good percentage elongation, and has good being applicable to and manufacture auto parts and components
Surface roughness, can substitute the cold rolling low-alloy product of same level, extensively apply on automobile, thus reduces automobile making
This, increase the benefit.
This detailed description of the invention is only and most preferably enumerates, the not restricted enforcement to technical solution of the present invention.
Claims (5)
1. tensile strength is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, and its component and weight percent content be:
C:0.070～0.100%, Si≤0.080%, Mn:0.700～1.100%, P≤0.025%, S≤0.008%, Als:0.015～
0.045%, remaining is ferrum and inevitable impurity；Surface roughness: Ra:1.0～1.6 μm.
2. tensile strength as claimed in claim 1 is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, and its feature exists
In: C:0.070～0.085%.
3. tensile strength as claimed in claim 1 is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, and its feature exists
In: Mn:0.700～0.850%.
4. tensile strength as claimed in claim 1 is 400MPa level great surface quality automobile hot rolling acid-cleaning steel, and its feature exists
In: Als:0.032～0.040%.
5. produce the side that tensile strength as claimed in claim 1 is 400MPa level great surface quality automobile hot rolling acid-cleaning steel
Method, it is characterised in that: its step:
1) routine is smelted and is casting continuously to form base；
2) heating strand, heating-up temperature is 1240 ~ 1280 DEG C；
3) carrying out hot rolling, and control roughing outlet temperature at 1040 ~ 1080 DEG C, finish rolling finishing temperature is at 820 ~ 860 DEG C；
4) batch, control coiling temperature at 590 ~ 630 DEG C；
5) section cooling is carried out, segmentation cooling before using, and control rate of cooling and be not less than 24 DEG C/s；
6) acid cleaning process is carried out
A, carry out uncoiling and align；
B, take elongation control pattern to carry out straightening, control its elongation percentage 1.0～2.0%；
Use three descaling bath acid to roll and online carry out pickling, wherein require: 1# descaling bath: total acid concentration is 180～200g/L
Pickle, Fe concentration is at 105～125g/L pickles, and the concentration of free acid is at 35～55g/L pickles, and pickling temperature is 80
～95 DEG C；2# descaling bath: total acid concentration is at 180～200g/L pickles, and Fe concentration is at 75～95g/L pickles, free acid
Concentration at 85～105g/L pickles, pickling temperature is at 80～95 DEG C；3# descaling bath: total acid concentration about 180～200g/L
Pickle, Fe concentration is at 25～45g/L pickles, and the concentration of free acid is at 145～165g/L pickles, and temperature is 80～95
℃；Corrosion inhibiter is added according to 14～16g/L pickles in each descaling bath；And control total pickling time less than 22 seconds；
C, rinsing, potcher uses level Four ladder-type cell body, and rinses by the mode of countercurrently hydro-peening；Control rinsing section
PH value is not less than 5.0, and electrical conductivity does not surpass 55 μ s/cm: and add corrosion inhibiter according to 14～16g/L pickles in potcher；
D, dry, utilize compressed air will accumulate in the residual liquid outer side-blown brush to steel band on steel band both sides, and control to be dried
Temperature is at 110～130 DEG C；
E, carrying out cold rolling levelling, smooth rate is set to 0.8～2.8%, and leveling roll Ra is 2.5～3.0 μm；And make calibrator whole process throw
Enter to use；
F, carry out conventional Electrostatic greasing.
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| CN110408941A (en) * | 2019-07-23 | 2019-11-05 | 北京首钢股份有限公司 | A kind of acid washing method of Multiphase Steel |
| CN110479774A (en) * | 2019-08-13 | 2019-11-22 | 武汉钢铁有限公司 | The method for eliminating thin gauge hot rolling acid-cleaning steel surface pit defect |
| CN110527923A (en) * | 2019-06-03 | 2019-12-03 | 武汉钢铁有限公司 | A kind of 600MPa grades of body of a motor car high-yield-ratio structural steel and production method |
| CN110592601A (en) * | 2019-09-30 | 2019-12-20 | 马鞍山钢铁股份有限公司 | Pickling process of hot rolled steel |
| CN111020385A (en) * | 2019-12-21 | 2020-04-17 | 河钢股份有限公司承德分公司 | Vanadium-containing hot-rolled pickled plate and pickling method thereof |
| CN113652695A (en) * | 2021-08-18 | 2021-11-16 | 马鞍山钢铁股份有限公司 | Production method for improving surface corrosion resistance of hot-rolled pickled steel plate |
| CN115537653A (en) * | 2022-09-09 | 2022-12-30 | 首钢集团有限公司 | Hot-rolled enameled pressed steel and preparation method thereof |
| CN115595503A (en) * | 2022-10-10 | 2023-01-13 | 本钢板材股份有限公司（Cn） | Hot-rolled pickled plate for high-hardness shaft net and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698925A (en) * | 2009-10-30 | 2010-04-28 | 武汉钢铁(集团)公司 | Low-carbon phosphorus-added high-yield-strength cold rolled steel sheet and manufacturing method thereof |
| CN102787270A (en) * | 2012-08-22 | 2012-11-21 | 武汉钢铁(集团)公司 | Thin hot-rolled pickled steel with good formability and production method thereof |
| 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 |
| CN104862583A (en) * | 2015-04-23 | 2015-08-26 | 江苏省沙钢钢铁研究院有限公司 | Pickling plate for 400 MPa-level automobile structure and production method thereof |
-
2016
- 2016-07-15 CN CN201610556967.7A patent/CN105925900B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698925A (en) * | 2009-10-30 | 2010-04-28 | 武汉钢铁(集团)公司 | Low-carbon phosphorus-added high-yield-strength cold rolled steel sheet and manufacturing method thereof |
| CN102787270A (en) * | 2012-08-22 | 2012-11-21 | 武汉钢铁(集团)公司 | Thin hot-rolled pickled steel with good formability and production method thereof |
| 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 |
| CN104862583A (en) * | 2015-04-23 | 2015-08-26 | 江苏省沙钢钢铁研究院有限公司 | Pickling plate for 400 MPa-level automobile structure and production method thereof |
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| CN110592601A (en) * | 2019-09-30 | 2019-12-20 | 马鞍山钢铁股份有限公司 | Pickling process of hot rolled steel |
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| CN115537653A (en) * | 2022-09-09 | 2022-12-30 | 首钢集团有限公司 | Hot-rolled enameled pressed steel and preparation method thereof |
| CN115537653B (en) * | 2022-09-09 | 2023-11-10 | 首钢集团有限公司 | Hot rolled enamelled steel sheet and preparation method thereof |
| CN115595503A (en) * | 2022-10-10 | 2023-01-13 | 本钢板材股份有限公司（Cn） | Hot-rolled pickled plate for high-hardness shaft net and preparation method thereof |
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