CN106119714B - Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades - Google Patents

Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades Download PDF

Info

Publication number
CN106119714B
CN106119714B CN201610735291.8A CN201610735291A CN106119714B CN 106119714 B CN106119714 B CN 106119714B CN 201610735291 A CN201610735291 A CN 201610735291A CN 106119714 B CN106119714 B CN 106119714B
Authority
CN
China
Prior art keywords
zinc
steel plate
iron
temperature
coating
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.)
Active
Application number
CN201610735291.8A
Other languages
Chinese (zh)
Other versions
CN106119714A (en
Inventor
陈宇
杜晓峰
彭涛
方芳
胡宽辉
潘利波
李立军
张彦文
王立辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Iron and Steel Co Ltd
Original Assignee
Wuhan Iron and Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Iron and Steel Co Ltd filed Critical Wuhan Iron and Steel Co Ltd
Priority to CN201610735291.8A priority Critical patent/CN106119714B/en
Publication of CN106119714A publication Critical patent/CN106119714A/en
Application granted granted Critical
Publication of CN106119714B publication Critical patent/CN106119714B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Coating With Molten Metal (AREA)

Abstract

A kind of iron zinc coating steel plate that yield strength is 310MPa grades, chemical constituent and wt% are：C:0.07~0.08%, Si：0.075~0.09%, Mn：0.40~0.5%, P≤0.02%, S≤0.015%, Al：0.015~0.05%, Nb：0.009~0.015%.Production stage：Continuous hot galvanizing is carried out to the steel plate through cold rolling；Steel plate is sent in the case where taking Insulation to zinc-iron DIFFUSION TREATMENT heating furnace；The zinc-iron DIFFUSION TREATMENT of low temperature after first high temperature is carried out to the steel plate after zinc-plated.Cooled to room temperature is simultaneously for use.The present invention can be under the premise of ensureing that steel plate uses mechanics, can also make galvanneal coating surface texture it is fine and close, without apparent micro-crack defect, coating surface zinc-iron crystal grain is tiny and size distribution is uniform, coating is firmly combined with steel substrate, and coating is less prone to dusting and obscission when stamping.

Description

Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades
Technical field
The present invention relates to a kind of galvanized steel plain sheet and its production method, it is 310MPa grades to specifically belong to a kind of yield strength Iron-zinc coating steel plate and production method, and the thickness suitable for steel plate is in 0.7-1.2mm.
Background technology
Zinc-iron plating steel plate（GA）Performance is struck with excellent corrosion resistance, coating, weldability and anti-chad, extensively It is general to be applied to car panel.However, being but susceptible to cadmia zinc gray, plating layer cross section iron content and phase structure point in its coating surface Cloth is uneven, when punch forming easily occur coating fall off and the deficiencies of dusting, to punching parts surface quality and production mould Tool brings adverse effect.
Through patent retrieval, find a kind of production method of no dusting think gauge Zn-Fe alloying plate, by thickness be 1.6~ 2.0mm strips are annealed in the continuous production line, zinc-plated, alloying, smooth, cutting step obtain Zn-Fe alloying plate；It is special Sign is, in the zinc-plated step, control zinc liquid temperature is at 460 ± 5 DEG C, and zinc liquid aluminium content is in 0.12~0.14wt%.
Compared with the present patent application, the zinc liquid aluminium content of the application is in 0.071-0.12wt%, hence it is evident that less than the document 0.12~0.14wt%.If zinc liquid aluminium content is higher, aluminium-expansion of the iron inhibition layer to iron into coating zinc for being formed in zinc liquid Scattered inhibition resistance meeting bigger, is unfavorable for the diffusion of iron.Thus, the characteristic of two kinds of materials is different, it is required that zinc liquid zinc Content is also different.
In addition, the belt steel thickness specification of this patent, in 0.7-1.2mm, 1.6~2.0mm being also significantly lower than in document is thick Degree.Obviously, strip is thinner, and the process specifications of production are higher, operation and control difficulty bigger, corresponding purposes and characteristic It is different.
Therefore, the key indexes such as the manufacturing condition described in this document and material thickness specification are different from the present invention, and two Person does not have comparativity.
A kind of alloying technology temperature, temperature data 450,480,510,540 is also found in patent retrieval（℃）, but It is the constant type temperature heating used that it, which adds mode of heating all, that is, temperature settles at one go when heating, and centre is without segmentation or variation. In general, mode of heating is divided into three kinds, including constant type heating, first low rear high formula heat stepwise, the heating of from low to high formula.And this is specially Profit is significantly different with the mode of heating described in document using from low to high formula mode of heating.The heating of Alloying Treatment Mode is related with production equipment or material property.If using fully closed alloying furnace, the formula of settling at one go can be used and add Hot mode, but the input of this equipment is very high, and equipment is complicated, safeguards and the cost of accessory is also very high.But if to heating side Formula optimizes, that is, uses the mode of heating of from low to high, semi-enclosed alloying furnace, equipment investment and later stage may be used Maintenance cost will be much lower.Obviously, using the mode of heating of from low to high, technology content higher, production cost is lower.
Invention content
The invention reside in the shortcomings of the prior art is overcome, a kind of premise that mechanics can be used in guarantee steel plate is provided Under, moreover it is possible to make galvanneal coating surface texture it is fine and close, without apparent micro-crack defect, coating surface zinc-iron crystal grain is tiny and size It is evenly distributed, coating is firmly combined with steel substrate, and coating is less prone to dusting and the surrender of obscission when stamping Iron-zinc coating the steel plate and production method that intensity is 310MPa grades.
Realize the measure of above-mentioned purpose：
A kind of iron-zinc coating steel plate that yield strength is 310MPa grades, chemical constituent and weight percent content are：C: 0.07~0.08%, Si：0.075~0. 09%, Mn：0.40~0.5%, P≤0.02%, S≤0.015%, Al：0.015~ 0.05%, Nb：0.009 ~ 0.015%, remaining is Fe and inevitable impurity.
A kind of galvanized method for iron-zinc coating steel plate that yield strength is 310MPa grades is produced, is：Its step：
1）Continuous hot galvanizing is carried out to the steel plate through cold rolling, and controls zinc pot temperature control at 455 ~ 465 DEG C, strip enters zinc Pot temperature is controlled at 460 ~ 490 DEG C；Aluminium weight percent content is in 0.071-0.120% in control zinc liquid；
2）After zinc-plated, steel plate is sent in the case where taking Insulation to zinc-iron DIFFUSION TREATMENT heating furnace, holding temperature exists 480-515℃；
3）Zinc-iron DIFFUSION TREATMENT of low temperature after first high temperature is carried out to the steel plate after zinc-plated：First by steel plate heating speed not It is reduced to 535 DEG C less than being heated to 565 DEG C under conditions of 230 DEG C/s, then by heating temperature；
4）Cooled to room temperature and for use after zinc-iron DIFFUSION TREATMENT.
The effect of the main intensified element such as C, Mn, Si, Nb and mechanism in the present invention：
C is gap intensified element, its main feature is that reinforcing is with obvious effects, cost of material is low.Content requirement is controlled in 0.07- 0.08%, if exceeding this range, the intensity of material is easy relatively low or higher.
Mn is displacement intensified element, is slightly below C element its main feature is that strengthening, cost is higher than C element.Content requirement control exists
0.40-0.50%, if exceeding this range, the intensity of material can be relatively low or higher.
The reinforcing effect and cost of material of Si is between C and Mn elements.Content requirement is controlled in 0.075-0.090%, If having surpassed this range, the intensity of material is easy relatively low or higher.
Nb is micro alloying element, its main feature is that being combined with C, N element in steel, forms Nb (CN) Second Phase Precipitation object, resistance It is only brilliant elongated big, achieve the effect that refinement reinforcing and precipitation strength.Content requirement is controlled in 0.009-0.015%, if exceeding this Range, then the intensity of material can be relatively low or higher.
Why the present invention carries out in continuous hot galvanizing and zinc-iron DIFFUSION TREATMENT cold-reduced sheet, and zinc pot temperature control is existed 460 ± 5 DEG C, strip enters zinc pot temperature control at 460 ~ 490 DEG C, i.e., strip is entered zinc pot temperature and be no more than 30 higher than zinc pot temperature DEG C, it is the temperature by strip itself steadily to provide zinc pot heat, is opened with making up the natural decline of zinc pot temperature Dynamic electric heater heats.Increase heat because starting zinc pot electric heater, zinc liquid temperature larger fluctuation can be caused, cause zinc pot bottom Portion's cadmia floats, and pollution steel sheet zinc coating surface forms coating surface cadmia or zinc gray.Here it is the surface of steel plate of the present invention without zinc The key point of slag.
Why the present invention controls the aluminium content in zinc liquid in 0.071-0.12%, and effect has two：One is in zinc liquid Form Fe2Al5Middle layer or filter layer, avoid the Fe atoms in base steel from being largely diffused into zinc liquid, mitigate Fe too high levels pair The influence of zinc liquid degree of purity, so as to improve the cleaning quality of coating surface.The second is as aluminium content is higher than 0.12% in zinc liquid, shape At filter layer will be partially thick, iron atom be difficult to it is suitable enter zinc-iron plating, and zinc-iron plating of effect cannot be formed with.When So, as in zinc liquid aluminium content be less than 0.071%, then Fe2Al5Middle layer or filter layer it is too thin, appropriate filtering iron atom is not achieved Effect.
Why the present invention takes the heat treatment mode of low temperature after first high temperature, i.e., is first adding in zinc-iron DIFFUSION TREATMENT Thermal velocity is being first to heat to 565 DEG C not less than 230 DEG C/s conditions, then by greenhouse cooling to 535 DEG C, is to make up stack effect production The deficiency of raw temperature unevenness.Using the zinc-iron DIFFUSION TREATMENT mode of heating, plating layer cross section iron content can be further increased And uniformity.
The present invention is why in zinc-iron DIFFUSION TREATMENT, to the galvanized steel plain sheet between zinc pot and zinc-iron DIFFUSION TREATMENT stove The Insulation at 480-515 DEG C is taken, is due to having set a distance, strip exposed in air second is that temperature in the two process Decline, in this way the iron atom in strip can then cannot spread because temperature is low into coating, iron content in coating is caused to be distributed It is uneven.Which solve iron atoms cannot spread at normal temperatures, causes the problem of iron content is unevenly distributed in coating.
Compared with prior art, the present invention the present invention can be under the premise of ensureing that steel plate uses mechanics, moreover it is possible to make alloying Coating surface compact structure, without apparent micro-crack defect, coating surface zinc-iron crystal grain is tiny and size distribution is uniform, coating with Steel substrate is firmly combined with, and coating is less prone to dusting and obscission when stamping.
Description of the drawings
Attached drawing 1 is product coating surface morphology figure produced by the invention.
Specific implementation mode
The present invention is described in detail below：
Table 1 is the chemical composition comparative example of various embodiments of the present invention and comparative example；
Table 2 is the main technologic parameters comparative example of various embodiments of the present invention and comparative example；
Table 3 is tensile property and the quality of coating situation list of various embodiments of the present invention and comparative example.
Various embodiments of the present invention press following technique productions：
1）Continuous hot galvanizing is carried out to the steel plate through cold rolling, and controls zinc pot temperature control at 455 ~ 465 DEG C, strip enters zinc Pot temperature is controlled at 460 ~ 490 DEG C；Aluminium weight percent content is in 0.071-0.120% in control zinc liquid；
2）After zinc-plated, steel plate is sent in the case where taking Insulation to zinc-iron DIFFUSION TREATMENT heating furnace, holding temperature exists 480-515℃；
3）Zinc-iron DIFFUSION TREATMENT of low temperature after first high temperature is carried out to the steel plate after zinc-plated：First by steel plate heating speed not It is reduced to 535 DEG C less than being heated to 565 DEG C under conditions of 230 DEG C/s, then by heating temperature；
4）Cooled to room temperature and for use after zinc-iron DIFFUSION TREATMENT.
The chemical composition comparative example of each case study on implementation of 1 present invention of table and comparative example（wt.%）
The main technologic parameters comparative example of 2 various embodiments of the present invention of table and comparative example
Tensile property and the quality of coating situation list of each case study on implementation of 3 present invention of table and comparative example
From table 3 it can be seen that the steel plate thickness of institute's case study on implementation is in 0.7-1.2mm, corresponding excellent in mechanical performance, surrender Intensity, tensile strength and elongation percentage are satisfied by corresponding requirements, wherein yield strength distribution is in 325-342（MPa）, elongation percentage exists 30-33（%）, plating layer cross section iron content is 9.8~10.5（%）, the curved test anti-grinded hardness index of 90 ° of V is at 1 grade, hence it is evident that better than normal 2 grades of rule.Product does not occur dusting and obscission in stamping process.And the iron content of comparative sample is 8.2-8.4 （%）, larger with the gap of desired value 10.0%；The anti-powdering index of phase also only has 2 grades, hence it is evident that less than 1 grade of index of the present invention.
Present embodiment is only the best example, not to the restricted implementation of technical solution of the present invention.

Claims (1)

1. the galvanized method for iron-zinc coating steel plate that a kind of yield strength of production is 310MPa grades, yield strength 310MPa Grade iron-zinc coating steel plate chemical constituent and weight percent content be：C:0.07~0.08%, Si：0.075~0. 09%, Mn：0.40~0.5%, P≤0.02%, S≤0.015%, Al：0.015~0.05%, Nb：0.009 ~ 0.015%, it is remaining for Fe and Inevitable impurity；
Its step：
1）Continuous hot galvanizing is carried out to the steel plate through cold rolling, and controls zinc pot temperature control at 455 ~ 465 DEG C, strip enters zinc pot temperature Degree control is at 481 ~ 490 DEG C；Aluminium weight percent content is in 0.071-0.120% in control zinc liquid；
2）After zinc-plated, steel plate is sent in the case where taking Insulation to zinc-iron DIFFUSION TREATMENT heating furnace, holding temperature is in 480- 515℃；
3）Zinc-iron DIFFUSION TREATMENT of low temperature after first high temperature is carried out to the steel plate after zinc-plated：First steel plate is not less than in heating speed It is heated to 565 DEG C under conditions of 230 DEG C/s, then heating temperature is reduced to 535 DEG C;
4）Cooled to room temperature and for use after zinc-iron DIFFUSION TREATMENT.
CN201610735291.8A 2016-08-26 2016-08-26 Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades Active CN106119714B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610735291.8A CN106119714B (en) 2016-08-26 2016-08-26 Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610735291.8A CN106119714B (en) 2016-08-26 2016-08-26 Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades

Publications (2)

Publication Number Publication Date
CN106119714A CN106119714A (en) 2016-11-16
CN106119714B true CN106119714B (en) 2018-08-07

Family

ID=57275448

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610735291.8A Active CN106119714B (en) 2016-08-26 2016-08-26 Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades

Country Status (1)

Country Link
CN (1) CN106119714B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106636902A (en) * 2016-12-19 2017-05-10 武汉钢铁股份有限公司 Iron-zinc coated steel sheet with 380 MPa-grade yield strength and production method
CN106702267A (en) * 2016-12-19 2017-05-24 武汉钢铁股份有限公司 Iron-zinc coating steel plate with yield strength being 350 MPa grade and production method
CN106521341A (en) * 2016-12-19 2017-03-22 武汉钢铁股份有限公司 Iron-zinc coated steel plate with yield strength being 450 MPa and production method thereof
CN111676435A (en) * 2020-06-22 2020-09-18 鞍钢蒂森克虏伯（重庆）汽车钢有限公司 Making process of zinc-plated alloy without stripe defect and reaction tower thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101812633A (en) * 2009-02-23 2010-08-25 宝山钢铁股份有限公司 Steel used for hot galvanizing structural component with high yield ratio and manufacturing method thereof
CN104988389A (en) * 2015-07-30 2015-10-21 武汉钢铁(集团)公司 Automobile alloyed hot-dip galvanized steel with tensile strength of 340 MPa grade and production method thereof
EP2942419A1 (en) * 2013-03-05 2015-11-11 JFE Steel Corporation High-strength hot-dip galvanized steel sheet and process for manufacturing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101812633A (en) * 2009-02-23 2010-08-25 宝山钢铁股份有限公司 Steel used for hot galvanizing structural component with high yield ratio and manufacturing method thereof
EP2942419A1 (en) * 2013-03-05 2015-11-11 JFE Steel Corporation High-strength hot-dip galvanized steel sheet and process for manufacturing same
CN104988389A (en) * 2015-07-30 2015-10-21 武汉钢铁(集团)公司 Automobile alloyed hot-dip galvanized steel with tensile strength of 340 MPa grade and production method thereof

Also Published As

Publication number Publication date
CN106119714A (en) 2016-11-16

Similar Documents

Publication Publication Date Title
CN106086633B (en) Iron-zinc coating steel plate and the production method that a kind of yield strength is 210MPa grades
CN106119714B (en) Iron-zinc coating the steel plate and production method that a kind of yield strength is 310MPa grades
WO2015087549A1 (en) Method for manufacturing high-strength hot-dip galvanized steel sheet
CN102395695A (en) Cold-rolled steel sheet having excellent slow-aging property and high curability in baking, and method for producing same
JP7528267B2 (en) Ultra-high strength dual-phase steel and its manufacturing method
CN105369136A (en) Hot-dipped aluminum zinc steel plate and manufacturing method thereof
CN101255541A (en) Hot-rolled substrate continuous hot galvanizing productive technology
CN108796388B (en) Hot-dip galvanized steel plate for color coating and manufacturing method thereof
CN106222541B (en) Iron-zinc coating steel plate and the production method that a kind of yield strength is 250MPa grades
JP6940691B2 (en) Steel sheet with excellent imageability after painting and its manufacturing method
CN106191663B (en) Iron-zinc coating steel plate and the production method that a kind of yield strength is 280MPa grades
CN106636902A (en) Iron-zinc coated steel sheet with 380 MPa-grade yield strength and production method
CN106884119B (en) A kind of manufacturing method of thickness coating hot-dip galvanizing sheet steel
CN106521341A (en) Iron-zinc coated steel plate with yield strength being 450 MPa and production method thereof
JP5018900B2 (en) Cold-rolled steel sheet excellent in formability and shape freezing property after aging and method for producing the same
CN106702267A (en) Iron-zinc coating steel plate with yield strength being 350 MPa grade and production method
CN106756555A (en) Iron zinc coating steel plate and production method of a kind of yield strength for 160MPa grades
CN106636921A (en) Iron-zinc plated steel plate with yield strength of 420MPa grade and production method
JP2015175040A (en) Method of manufacturing galvanized steel plate and alloyed galvanized steel plate, and galvanized steel plate and alloyed galvanized steel plate
KR20140084872A (en) Steel for hot press forming having excellent formability and method for manufacturing the same
CN106480364A (en) A kind of yield strength is ferrum zinc coating steel plate and the production method of 190MPa level
CN114703352B (en) Cold rolling method for improving comprehensive performance of corrosion-resistant alloy sheet with BCC structure
CN106521342A (en) Iron-zinc coated steel plate with yield strength being 130 MPa and production method thereof
KR101528014B1 (en) Cold-rolled steel plate and method for producing same
CN115491583B (en) Ultra-deep drawing cold-rolled hot-dip aluminum-zinc steel plate and manufacturing method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170622

Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2

Applicant after: Wuhan iron and Steel Company Limited

Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2

Applicant before: WUHAN IRON AND STEEL CORPORATION

GR01 Patent grant
GR01 Patent grant