CN106702278B - Uncoated control iron scale comes off hot press-formed with Plate Production method - Google Patents

Uncoated control iron scale comes off hot press-formed with Plate Production method Download PDF

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CN106702278B
CN106702278B CN201710052038.7A CN201710052038A CN106702278B CN 106702278 B CN106702278 B CN 106702278B CN 201710052038 A CN201710052038 A CN 201710052038A CN 106702278 B CN106702278 B CN 106702278B
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steel
production method
temperature
control
boron
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CN106702278A (en
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刘宏亮
胡洋
高洪刚
陈宇
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Bengang Steel Plates Co Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • 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
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • Metallurgy (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

The invention belongs to iron and steel smelting technology field, and in particular to a kind of hot press-formed use Plate Production method that uncoated control iron scale comes off, this method are including content, the chemical composition for controlling steel plate by weight percentage：C：0.19~0.27%, Mn：0.1~1.5%；Si<0.8%；Al<0.5%；Cr<0.4%；Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.0005~0.0040%；P<0.03%, surplus is Fe and inevitable field trash.The present invention controls tablet iron oxide Rust Layer Structure, and then realize the effect that punching course non-oxidation iron sheet comes off using the method for prefabricated iron scale.

Description

Uncoated control iron scale comes off hot press-formed with Plate Production method
Technical field
The invention belongs to iron and steel smelting technology field, and in particular to the drop stamping that a kind of uncoated control iron scale comes off Plate Production method is used in shaping.
Background technology
Because of hot forming steel industry characteristics, need to carry out steel plate reaustenitizing processing, i.e. reheating, heating before punching press Temperature is typically at 850~950 DEG C, and under no any disposition, the formation of iron scale can not be evaded, and this is also puzzlement heat The bottleneck of forming technology production.Mainly produced at present using two methods.One kind is that steel plate is carried out at coating before stamping The methods of reason, such as plating Al-Si coatings, hinders iron scale to be formed, but cost is high.Another kind, without pretreatment, directly use Bare board is produced, and is protected using furnace atmosphere and reduces iron scale and formed, but tablet is come out of the stove punching course, and iron scale can not be kept away Exempt from, therefore punching course needs to shut down and mould is cleared up, and the part after punching press need to subsequently use bead, remove Iron scale.
The content of the invention
In order to solve the above-mentioned technical problem, a kind of uncoated control iron scale of present invention offer comes off hot press-formed With Plate Production method, using the method for prefabricated iron scale, tablet iron oxide Rust Layer Structure is controlled, and then realize punching course The effect that non-oxidation iron sheet comes off.
The present invention is achieved in that the hot press-formed use Plate Production method that uncoated control iron scale comes off, This method includes, by weight percentage content, and the chemical composition for controlling steel plate is：C：0.19~0.27%, Mn：0.1~ 1.5%；Si<0.8%；Al<0.5%；Cr<0.4%；Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.0005~ 0.0040%；P<0.03%, surplus is Fe and inevitable field trash.
Further, this method includes using following technological process：
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold Roll → continuous annealing → smooth → function inspection → packaging dispatches from the factory；
Wherein, continuous annealing process parameter is as shown in the table：
,
The oxygen content of overaging section furnace atmosphere controls the dew-point temperature in 18~22ppm, stove to control at -20 DEG C, most The generation of FeO layers is avoided eventually, surface is directly produced Fe3O4Pre-oxidize film.
Further, during steel rolling, ladle Als is by 0.005~0.015% control；Ladle N≤25ppm；De- S terminates laggard Row Ti Alloying, using silicon-calcium wire Calcium treatment, boron alloyed, soft blow after boron line or ferro-boron addition is finally carried out with boron line or ferro-boron Argon 10-15min, strictly avoid molten steel exposed；Alloying order is Si-Mn-Cr-Ti-B, and Al adds with slagging process.
Further, continuous casting process is whole carries out molding casting, opens using being wrapped in argon gas purging before pouring, casting process is accomplished Exposed without molten steel, strict to control the mouth of a river to inhale N, control increases N≤5ppm；Using cinder inclusion in high alkalinity, so as to going for steel inclusion Remove；Steel pouring process puts into soft press function；Steel pouring process keeps permanent pulling rate；The middle bag degree of superheat is by 15~30 DEG C of controls；More than big bag Middle bag and crystallizer gas sample is taken to do N content analysis during 90t；Strand optimizing incision, length 7.0-7.5m.
Further, 1200~1300 DEG C of heating-up temperature in heating process, 1200~1280 DEG C of target tapping temperature.
Further, in hot-rolled process, waste mill train time selection 3+3 Schema controls；The sharing of load of finish rolling model is carried out, is protected Demonstrate,prove rolling stability；Finishing temperature is 850~910 DEG C；Coiling temperature is 650~720 DEG C, and refrigerating mode is using interval cooling side Formula；According to the actual conditions of belt steel surface, small de-scaling after F1, F2 machine is put into.
Further, pickling temperature is 70~85 DEG C in acid cleaning process, pickling speed 120-150m/min.
Further, steel plate is used for 850~900 DEG C of heating-up temperature, 5~10min of soaking time during hot forming.
Compared with prior art, it is an advantage of the current invention that on the premise of production cost is not increased, hot forming steel is changed The structure of iron scale in heating and punching course, solve the problem that come off in its heating and punching course, finally make punching parts Surface forms one layer of relatively stable, oxide layer of thinner thickness, compact structure.Economical preferably surface quality is good, environment friend It is good.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Normarzing annealing plate surface non-oxidation iron, by bright annealing, almost 100% Pure Iron Surface is obtained, then by applying Oil is supplied to client.
During hot forming steel use, need that tablet (annealed sheet) first is heated into austenitizing, i.e., more than 850 DEG C, then Mould is transferred to, carries out punching press, press temperature is generally higher than 700 DEG C, and in this process, surface of steel plate will be oxidized, and be formed Ferrous oxide (FeO), ferrous oxide compactness is excessively poor, and unstable, easily decomposes, therefore the iron scale formed is easily de- Fall.Heating furnace carries out atmosphere protection, can only mitigate the formation of iron scale, and after mould is transferred to, oxidation can not be avoided sub- The formation of iron, also can not just solve iron scale and come off this problem.
This technology uses prefabricated rusty scale method, before dispatching from the factory, passes through Special controlling so that surface forms one layer fine and close four Fe 3 O (Fe3O4) film, ferroso-ferric oxide compact structure, it is in palace case relation with iron-based body, it is stable and difficult for drop-off, two It in secondary heating process, can effectively hinder further to aoxidize, and then play control iron scale thickness, and suppress what rusty scale came off Purpose.
Specific implementation is in cold-rolling process section, using special overaging technique, by specific overaging temperature and stove The oxygen content control of atmosphere, by the control of the content of oxygen in 20ppm or so, overaging temperature control is at 370 DEG C, dew point in stove Control avoids water from influenceing surface oxide layer, finally avoid the generation of FeO layers, surface is directly produced Fe at -20 DEG C3O4Pre- oxygen Change film.
The Fe of this layer of pre-oxidation3O4Oxide-film, when the reheating of drop stamping, prevent iron scale from producing, avoid Iron scale comes off.
Embodiment 1,
The hot press-formed use Plate Production method that uncoated control iron scale comes off, this method include, and by weight hundred Divide than content, the chemical composition for controlling steel plate is：C：0.19%, Mn：0.1%；Si<0.8%；Al<0.5%；Cr<0.4%； Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.0005%；P<0.03%, surplus is Fe and inevitable field trash.
This method includes using following technological process：
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold Roll → continuous annealing → smooth → function inspection → packaging dispatches from the factory；
Wherein, continuous annealing process parameter is as shown in the table：
,
The oxygen content of overaging section furnace atmosphere controls the dew-point temperature in 18ppm, stove to control at -20 DEG C, finally keeps away The generation of FeO layers is exempted from, surface is directly produced Fe3O4Pre-oxidize film.
In steel making working procedure, ladle Als is by 0.005% control；Ladle N≤25ppm；De- S carries out Ti Alloying after terminating, and adopts With silicon-calcium wire Calcium treatment, boron alloyed, soft blow argon 10min after boron line or ferro-boron addition is finally carried out with boron line or ferro-boron, strictly Avoid molten steel exposed；Alloying order is Si-Mn-Cr-Ti-B, and Al adds with slagging process.
Continuous casting process is whole to carry out molding casting, opens using being wrapped in argon gas purging before pouring, casting process accomplishes that no molten steel is naked Dew, strict to control the mouth of a river to inhale N, control increases N≤5ppm；Using cinder inclusion in high alkalinity, so as to the removal of steel inclusion；Pour steel mistake Journey puts into soft press function；Steel pouring process keeps permanent pulling rate；The middle bag degree of superheat is by 15~30 DEG C of controls；In being taken more than big bag during 90t Bag and crystallizer gas sample do N content analysis；Strand optimizing incision, length 7.0m.
1200 DEG C of heating-up temperature in heating process, 1200 DEG C of target tapping temperature.
In hot-rolled process, waste mill train time selection 3+3 Schema controls；The sharing of load of finish rolling model is carried out, ensures that rolling is steady It is qualitative；Finishing temperature is 850 DEG C；Coiling temperature is 650 DEG C, and refrigerating mode is using the interval type of cooling；According to belt steel surface Actual conditions, put into small de-scaling after F1, F2 machine.
Pickling temperature is 70 DEG C in acid cleaning process, pickling speed 120m/min.
Steel plate is used for 850 DEG C of heating-up temperature, soaking time 5min during hot forming.
Embodiment 2,
The hot press-formed use Plate Production method that uncoated control iron scale comes off, this method include, and by weight hundred Divide than content, the chemical composition for controlling steel plate is：C：0.27%, Mn：1.5%；Si<0.8%；Al<0.5%；Cr<0.4%； Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.0040%；P<0.03%, surplus is Fe and inevitable field trash.
This method includes using following technological process：
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold Roll → continuous annealing → smooth → function inspection → packaging dispatches from the factory；
Wherein, continuous annealing process parameter is as shown in the table：
,
The oxygen content of furnace atmosphere controls the dew-point temperature in 22ppm, stove to control at -20 DEG C, finally avoid FeO layers Generation, surface is directly produced Fe3O4Pre-oxidize film.
In steel making working procedure, ladle Als is by 0.015% control；Ladle N≤25ppm；De- S carries out Ti Alloying after terminating, and adopts With silicon-calcium wire Calcium treatment, boron alloyed, soft blow argon 15min after boron line or ferro-boron addition is finally carried out with boron line or ferro-boron, strictly Avoid molten steel exposed；Alloying order is Si-Mn-Cr-Ti-B, and Al adds with slagging process.
Continuous casting process is whole to carry out molding casting, opens using being wrapped in argon gas purging before pouring, casting process accomplishes that no molten steel is naked Dew, strict to control the mouth of a river to inhale N, control increases N≤5ppm；Using cinder inclusion in high alkalinity, so as to the removal of steel inclusion；Pour steel mistake Journey puts into soft press function；Steel pouring process keeps permanent pulling rate；The middle bag degree of superheat is by 30 DEG C of controls；Taken more than big bag during 90t middle bag and Crystallizer gas sample does N content analysis；Strand optimizing incision, length 7.5m.
1300 DEG C of heating-up temperature in heating process, 1280 DEG C of target tapping temperature.
In hot-rolled process, waste mill train time selection 3+3 Schema controls；The sharing of load of finish rolling model is carried out, ensures that rolling is steady It is qualitative；Finishing temperature is 910 DEG C；Coiling temperature is 720 DEG C, and refrigerating mode is using the interval type of cooling；According to belt steel surface Actual conditions, put into small de-scaling after F1, F2 machine.
Pickling temperature is 85 DEG C in acid cleaning process, pickling 150m/min.
Steel plate is used for 900 DEG C of heating-up temperature, soaking time 10min during hot forming.
Embodiment 3,
The hot press-formed use Plate Production method that uncoated control iron scale comes off, this method include, and by weight hundred Divide than content, the chemical composition for controlling steel plate is：C：0.23%, Mn：0.8%；Si<0.8%；Al<0.5%；Cr<0.4%； Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.004%；P<0.03%, surplus is Fe and inevitable field trash.
This method includes using following technological process：
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold Roll → continuous annealing → smooth → function inspection → packaging dispatches from the factory；
Wherein, continuous annealing process parameter is as shown in the table：
,
The oxygen content of furnace atmosphere controls the dew-point temperature in 20ppm, stove to control at -20 DEG C, finally avoid FeO layers Generation, surface is directly produced Fe3O4Pre-oxidize film.
In steel making working procedure, ladle Als is by 0.01% control；Ladle N≤25ppm；De- S carries out Ti Alloying after terminating, and adopts With silicon-calcium wire Calcium treatment, boron alloyed, soft blow argon 13min after boron line or ferro-boron addition is finally carried out with boron line or ferro-boron, strictly Avoid molten steel exposed；Alloying order is Si-Mn-Cr-Ti-B, and Al adds with slagging process.
Continuous casting process is whole to carry out molding casting, opens using being wrapped in argon gas purging before pouring, casting process accomplishes that no molten steel is naked Dew, strict to control the mouth of a river to inhale N, control increases N≤5ppm；Using cinder inclusion in high alkalinity, so as to the removal of steel inclusion；Pour steel mistake Journey puts into soft press function；Steel pouring process keeps permanent pulling rate；The middle bag degree of superheat is by 23 DEG C of controls；Taken more than big bag during 90t middle bag and Crystallizer gas sample does N content analysis；Strand optimizing incision, length 7.2m.
1250 DEG C of heating-up temperature in heating process, 1240 DEG C of target tapping temperature.
In hot-rolled process, waste mill train time selection 3+3 Schema controls；The sharing of load of finish rolling model is carried out, ensures that rolling is steady It is qualitative；Finishing temperature is 880 DEG C；Coiling temperature is 690 DEG C, and refrigerating mode is using the interval type of cooling；According to belt steel surface Actual conditions, put into small de-scaling after F1, F2 machine.
Pickling temperature is 77 DEG C in acid cleaning process, pickling speed 135m/min.
Steel plate is used for 870 DEG C of heating-up temperature, soaking time 7min during hot forming.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (6)

1. uncoated control iron scale comes off hot press-formed with Plate Production method, it is characterised in that this method includes, Content by weight percentage, the chemical composition for controlling steel plate are：C：0.19~0.27%, Mn：0.1~1.5%；Si<0.8%； Al<0.5%；Cr<0.4%；Mo<0.5%；Ni<0.5%；Ti<0.1%；B：0.0005~0.0040%；P<0.03%, surplus For Fe and inevitable field trash；
Including using following technological process：
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold rolling → Continuous annealing → smooth → function inspection → packaging is dispatched from the factory；
Wherein, continuous annealing process parameter is as shown in the table：
,
The oxygen content of overaging section furnace atmosphere controls the dew-point temperature in 18~22ppm, stove to control at -20 DEG C, finally keeps away The generation of FeO layers is exempted from, surface is directly produced Fe3O4Pre-oxidize film；
During steel rolling, ladle Als is by 0.005~0.015% control；Ladle N≤25ppm；De- S carries out Ti Alloying after terminating, and adopts With silicon-calcium wire Calcium treatment, boron alloyed, soft blow 10~15min of argon after boron line or ferro-boron addition is finally carried out with boron line or ferro-boron, Strictly avoid molten steel exposed；Alloying order is Si-Mn-Cr-Ti-B, and Al adds with slagging process.
2. according to the production method described in claim 1, it is characterised in that continuous casting process is whole to carry out molding casting, opens before pouring Wrapped in being purged using argon gas, casting process accomplishes that no molten steel is exposed, strict to control the mouth of a river to inhale N, and control increases N≤5ppm；Using height Cinder inclusion in basicity, so as to the removal of steel inclusion；Steel pouring process puts into soft press function；Steel pouring process keeps permanent pulling rate；In The bag degree of superheat is by 15~30 DEG C of controls；Middle bag and crystallizer gas sample is taken to do N content analysis during 90t more than big bag；Strand optimization is cut Cut, length 7.0-7.5m.
3. according to the production method described in claim 1, it is characterised in that 1200~1300 DEG C of heating-up temperature in heating process, 1200~1280 DEG C of target tapping temperature.
4. according to the production method described in claim 1, it is characterised in that in hot-rolled process, waste mill train time selection 3+3 patterns Control；The sharing of load of finish rolling model is carried out, ensures rolling stability；Finishing temperature is 850~910 DEG C；Coiling temperature is 650 ~720 DEG C, refrigerating mode is using the interval type of cooling；According to the actual conditions of belt steel surface, small de-scaling after F1, F2 machine is put into.
5. according to the production method described in claim 1, it is characterised in that pickling temperature is 70~85 DEG C in acid cleaning process, acid Wash speed 120-150m/min.
6. according to the production method described in claim 1, it is characterised in that steel plate is used for heating-up temperature 850~900 during hot forming DEG C, 5~10min of soaking time.
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CN108411195A (en) * 2018-03-27 2018-08-17 本钢板材股份有限公司 A kind of the hot forming steel plate and preparation method of cold environment punching production
CN109706377A (en) * 2019-03-01 2019-05-03 本钢板材股份有限公司 A kind of the think gauge PHS1500 steel and its production technology of suitable hot forming processing
CN111218546A (en) * 2019-12-20 2020-06-02 上海仅优节能环保科技有限公司 Method for reducing oxidation burning loss of steel billet in gas heating furnace
CN111187901A (en) * 2019-12-20 2020-05-22 上海仅优节能环保科技有限公司 Method for reducing oxidation burning loss of hot-rolled steel billet in heating furnace
CN111647822A (en) * 2020-03-24 2020-09-11 本钢板材股份有限公司 Steel applied to environment-friendly kitchen and preparation method thereof
CN111411298B (en) * 2020-03-31 2022-04-26 首钢京唐钢铁联合有限责任公司 Low-strength iron sheet falling-resistant hot-formed steel coil and preparation method thereof
CN115612973A (en) * 2022-11-02 2023-01-17 上海大陆天瑞激光表面工程有限公司 Laser high-temperature flash forming method for surface oxide film of steel material

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