CN106756557B - A kind of high-strength tensile type cold-strip steel and preparation method thereof - Google Patents

A kind of high-strength tensile type cold-strip steel and preparation method thereof Download PDF

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CN106756557B
CN106756557B CN201611214644.6A CN201611214644A CN106756557B CN 106756557 B CN106756557 B CN 106756557B CN 201611214644 A CN201611214644 A CN 201611214644A CN 106756557 B CN106756557 B CN 106756557B
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strip
strip steel
type cold
strength tensile
tensile type
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CN106756557A (en
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王国宝
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JIANGSU HUAJIU SPOKE MANUFACTURING Co Ltd
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JIANGSU HUAJIU SPOKE MANUFACTURING 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
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

The present invention relates to a kind of high-strength tensile type cold-strip steel, it is characterised in that：It includes each component of following parts by weight, C0.2%~0.8%, Si 0.1%~0.15%, Cr10%~15%, Mn1.2%~1.5%, Mo0.8%~1.0%, W0.5%~1.0%, Zn1.25%~1.5%, Ti0.3%~1.5%, Zr0.8%~1.2%, Sb0.8%~1.0%, Ni8%~12%, Cu1%~2%, remaining is Fe.The present invention adds various trace elements in cold-strip steel formula, can strengthen the structural strength and hardness performance of cold-strip steel after shaping.

Description

A kind of high-strength tensile type cold-strip steel and preparation method thereof
Technical field
The present invention relates to stainless steel manufacturing field, and in particular to a kind of high-strength tensile type cold-strip steel and its preparation side Method.
Technical background
Stainless-steel cold-rolling strip coordinates various trace elements to increase its metallicity, draftability based on ferro element Can, according to the element of different ratio, cold-strip steel can produce different performances.
Simultaneously in existing process for producing cold rolled strip steel, typically annealing it is each during be in the guarantor of inert gas Under shield state, when annealing temperature is relatively low, or using inert gas, very big waste is now caused, in cold rolling strap In steel passivation technology, typically carried out by the way that cold-strip steel is placed into passivating dip, passivation rate is low, has had a strong impact on life Produce speed.
In view of it is above-mentioned the defects of, the design people, be actively subject to research and innovation, to found a kind of novel high-strength tension Type cold-strip steel and preparation method thereof, make it with more the value in industry.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of high-strength tensile type cold-strip steel and its preparation Method.
Technical scheme is as follows：
A kind of high-strength tensile type cold-strip steel, it is characterised in that：It includes each component of following parts by weight,
Remaining is Fe.
Further, the preparation method of the high-strength tensile type cold-strip steel is as follows,
A, refine：After above-mentioned each component is refined, it is cast as carrying out dephosphorization by dephosphorization apparatus after slab；
B, hot rolling：Slab after dephosphorization is heated by Coil Box at 1000 DEG C~1300 DEG C, passes through mm finishing mill unit Progress is repeatedly pressed into strip；
C, anneal：Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 800 DEG C~1000 DEG C, in nitrogen Under guard mode, second segment temperature is 500 DEG C~800 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 300 DEG C~500 DEG C, cooled down under air condition；
D, it is electrolysed：Strip after cooling is placed into the electrolytic cleaning tank equipped with alkaline electrolyte and is electrolysed, is used for Remove the residual grease of belt steel surface；
E, pickling：Pickling is carried out after strip after electrolysis is rinsed, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is mass fraction 35% hydrochloric acid, pickling time are 30~45 seconds.
F, it is passivated：Strip after pickling is passivated in supercritical carbon dioxide fluid, passivator is mixed into super By being passivated in supercritical carbon dioxide treatment system in critical carbon dioxide fluid.
Further, in the step f, passivation time is 1min~2min.
Further, in the step d, the alkaline electrolyte is sodium hydroxide solution, wherein sodium hydroxide solution Concentration is the solution of mass fraction 15%.
Further, in the step d, the current density of electrolysis is 30~40A/dm3。
By such scheme, the present invention at least has advantages below：
(1) present invention adds various trace elements in cold-strip steel formula, can strengthen cold-strip steel after being molded Structural strength and hardness performance；
(2) present invention is passivated in supercritical carbon dioxide fluid to strip, due to supercritical carbon dioxide fluid Diffusion velocity more than fluid block, there is preferable mobility and transfer performance, the passivation of belt steel surface can be rapidly completed；
(3) present invention, by three sections of annealing way, nitrogen is used under first paragraph and the second segment condition of high temperature in annealing process Gas is protected, and the 3rd section of temperature is protected compared with low state by air, reduces cost.
Embodiment
With reference to embodiment, the embodiment of the present invention is described in further detail.Following examples are used for Illustrate the present invention, but be not limited to the scope of the present invention.
A kind of high-strength tensile type cold-strip steel described in a preferred embodiment of the present invention, it includes following parts by weight Each component,
Remaining is Fe.
The preparation method of high-strength tensile type cold-strip steel of the present invention is as follows,
A, refine：After above-mentioned each component is refined, it is cast as carrying out dephosphorization by dephosphorization apparatus after slab；
B, hot rolling：Slab after dephosphorization is heated by Coil Box at 1000 DEG C~1300 DEG C, passes through mm finishing mill unit Progress is repeatedly pressed into strip；
C, anneal：Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 800 DEG C~1000 DEG C, in nitrogen Under guard mode, second segment temperature is 500 DEG C~800 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 300 DEG C~500 DEG C, cooled down under air condition；
D, it is electrolysed：Strip after cooling is placed into the electrolytic cleaning tank equipped with alkaline electrolyte and is electrolysed, is used for Remove the residual grease of belt steel surface；
E, pickling：Pickling is carried out after strip after electrolysis is rinsed, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is mass fraction 35% hydrochloric acid, pickling time are 30~45 seconds.
F, it is passivated：Strip after pickling is passivated in supercritical carbon dioxide fluid, passivator is mixed into super By being passivated in supercritical carbon dioxide treatment system in critical carbon dioxide fluid.
In-step the f, passivation time is 1min~2min.
In-step the d, the alkaline electrolyte is sodium hydroxide solution, and wherein the concentration of sodium hydroxide solution is matter Measure the solution of fraction 15%.
In-step the d, the current density of electrolysis is 30~40A/dm3.The operation principle of the present invention is as follows：
Embodiment 1
By 0.2% C, 0.1% Si, 10% Cr, 1.2% Mn, 0.8% Mo, 0.5% W, 1.25% Zn, 0.3% Ti, 0.8% Zr, 0.8% Sb, 8% Ni, 1% Cu, refined, refined after 75.05% Fe mixing It is made after slab and dephosphorization is carried out by dephosphorizing machine；Slab after dephosphorization is heated by Coil Box at 1000 DEG C, passes through finish rolling Unit carries out repeatedly being pressed into strip；Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 800 DEG C, in nitrogen Under guard mode, second segment temperature is 500 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 300 DEG C, in air shape Cooled down under state；Strip after cooling is placed into the electrolytic cleaning tank of the sodium hydroxide solution equipped with mass fraction 15% and carried out Electrolysis, the current density of electrolysis is 30~40A/dm3, for removing the residual grease of belt steel surface；Strip after electrolysis is rushed Pickling is carried out after washing, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is the hydrochloric acid of mass fraction 35%, and pickling time is 30 seconds；By acid Strip after washing is passivated in supercritical carbon dioxide fluid, and passivator is mixed into supercritical carbon dioxide fluid and led to Cross in supercritical carbon dioxide treatment system and be passivated.
Implement 2
By 0.5% C, 0.12% Si, 12% Cr, 1.4% Mn, 0.9% Mo, 0.8% W, 1.35% Zn, 0.8% Ti, 1.0% Zr, 0.9% Sb, 10% Ni, 1.5% Cu, refined after 68.73% Fe mixing System, refine into and dephosphorization is carried out by dephosphorizing machine after slab；Slab after dephosphorization is heated by Coil Box at 1200 DEG C, is passed through Mm finishing mill unit carries out repeatedly being pressed into strip；Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 900 DEG C, is in Under nitrogen guard mode, second segment temperature is 600 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 400 DEG C, in sky Cooled down under gaseity；Strip after cooling is placed into the electrolytic cleaning tank of the sodium hydroxide solution equipped with mass fraction 15% It is electrolysed, the current density of electrolysis is 35A/dm3, for removing the residual grease of belt steel surface；Strip after electrolysis is rushed Pickling is carried out after washing, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is the hydrochloric acid of mass fraction 35%, and pickling time is 40 seconds；By acid Strip after washing is passivated in supercritical carbon dioxide fluid, and passivator is mixed into supercritical carbon dioxide fluid and led to Cross in supercritical carbon dioxide treatment system and be passivated.
Embodiment 3
By 0.8% C, 0.15% Si, 15% Cr, 1.5% Mn, 1.0% Mo, 1.0% W, 1.5% Zn, 1.5% Ti, 1.2% Zr, 1.0% Sb, 12% Ni, 2% Cu, refined after 61.35% Fe mixing, Refine into and dephosphorization is carried out by dephosphorizing machine after slab；Slab after dephosphorization is heated by Coil Box at 1300 DEG C, passes through essence Milling train group carries out repeatedly being pressed into strip；Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 1000 DEG C, is in Under nitrogen guard mode, second segment temperature is 800 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 500 DEG C, in sky Cooled down under gaseity；Strip after cooling is placed into the electrolytic cleaning tank of the sodium hydroxide solution equipped with mass fraction 15% It is electrolysed, the current density of electrolysis is 40A/dm3, for removing the residual grease of belt steel surface；Strip after electrolysis is rushed Pickling is carried out after washing, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is the hydrochloric acid of mass fraction 35%, and pickling time is 45 seconds；By acid Strip after washing is passivated in supercritical carbon dioxide fluid, and passivator is mixed into supercritical carbon dioxide fluid and led to Cross in supercritical carbon dioxide treatment system and be passivated.
Various embodiments of the present invention strip property index is as follows
Project Yield strength (MPa) Tensile strength (MPa) Elongation percentage (%)
Embodiment 1 322 480 26.8
Embodiment 2 334 476 25.6
Embodiment 3 325 488 26.4
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and Modification, these improvement and modification also should be regarded as protection scope of the present invention.

Claims (4)

1. a kind of high-strength tensile type cold-strip steel, it includes each component of following parts by weight, C 0.2%~0.8%, Si 0.1%~0.15%, Cr 10%~15%, Mn 1.2%~1.5%, Mo 0.8%~1.0%, W 0.5%~1.0%, Zn 1.25%~1.5%, Ti 0.3%~1.5%, Zr 0.8%~1.2%, Sb 0.8%~1.0%, Ni 8%~12%, Cu 1%~2%, remaining is Fe, it is characterised in that：The preparation method of the high-strength tensile type cold-strip steel is as follows,
A, refine：After above-mentioned each component is refined, it is cast as carrying out dephosphorization by dephosphorization apparatus after slab；
B, hot rolling：Slab after dephosphorization is heated by Coil Box at 1000 DEG C~1300 DEG C, carried out by mm finishing mill unit Repeatedly it is pressed into strip；
C, anneal：Strip is annealed, annealing is divided into three sections, and first paragraph temperature is 800 DEG C~1000 DEG C, is protected in nitrogen Under state, second segment temperature is 500 DEG C~800 DEG C, and under nitrogen guard mode, the 3rd section of temperature is 300 DEG C~500 DEG C, Cooled down under air condition；
D, it is electrolysed：Strip after cooling is placed into the electrolytic cleaning tank equipped with alkaline electrolyte and is electrolysed, for removing The residual grease of belt steel surface；
E, pickling：Pickling is carried out after strip after electrolysis is rinsed, acid is hydrochloric acid, and wherein the concentration of hydrochloric acid is mass fraction 35% Hydrochloric acid, pickling time be 30~45 seconds；
F, it is passivated：Strip after pickling is passivated in supercritical carbon dioxide fluid, passivator is mixed into overcritical By being passivated in supercritical carbon dioxide treatment system in CO 2 fluid.
A kind of 2. high-strength tensile type cold-strip steel according to claim 1, it is characterised in that：In the step f, passivation Time is 1min~2min.
A kind of 3. high-strength tensile type cold-strip steel according to claim 1, it is characterised in that：It is described in the step d Alkaline electrolyte is sodium hydroxide solution, and wherein the concentration of sodium hydroxide solution is the solution of mass fraction 15%.
A kind of 4. high-strength tensile type cold-strip steel according to claim 1, it is characterised in that：In the step d, electrolysis Current density be 30~40A/dm3。
CN201611214644.6A 2016-12-26 2016-12-26 A kind of high-strength tensile type cold-strip steel and preparation method thereof Active CN106756557B (en)

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CN107130190A (en) * 2017-07-13 2017-09-05 芜湖县双宝建材有限公司 A kind of zinc steel burglary-resisting window corrosion-resistant finishes material
CN108085599A (en) * 2017-12-28 2018-05-29 滁州宝岛特种冷轧带钢有限公司 A kind of high-strength tensile type cold-strip steel and preparation method thereof

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US5330705A (en) * 1993-06-04 1994-07-19 Carondelet Foundry Company Heat resistant alloys
CN101410541A (en) * 2006-12-25 2009-04-15 新日本制铁株式会社 Steel for machine structure excelling in machinability and strength property
CN101578446A (en) * 2007-11-12 2009-11-11 新日本制铁株式会社 Process for production of common rails and partially strengthened common rails
CN105603334A (en) * 2016-02-11 2016-05-25 曹兴奎 Low-alloy high-strength steel plate for water conservancy and production method thereof

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JP6244938B2 (en) * 2014-01-24 2017-12-13 新日鐵住金株式会社 Austenitic stainless steel welded joint

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US5330705A (en) * 1993-06-04 1994-07-19 Carondelet Foundry Company Heat resistant alloys
CN101410541A (en) * 2006-12-25 2009-04-15 新日本制铁株式会社 Steel for machine structure excelling in machinability and strength property
CN101578446A (en) * 2007-11-12 2009-11-11 新日本制铁株式会社 Process for production of common rails and partially strengthened common rails
CN105603334A (en) * 2016-02-11 2016-05-25 曹兴奎 Low-alloy high-strength steel plate for water conservancy and production method thereof

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