CN105908079A - Processing method of high-strength steel - Google Patents
Processing method of high-strength steel Download PDFInfo
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- CN105908079A CN105908079A CN201610445921.8A CN201610445921A CN105908079A CN 105908079 A CN105908079 A CN 105908079A CN 201610445921 A CN201610445921 A CN 201610445921A CN 105908079 A CN105908079 A CN 105908079A
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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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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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
- C22C38/002—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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- 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
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
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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)
- Heat Treatment Of Sheet Steel (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a processing method of high-strength steel. The high-strength steel comprises, by weight, 0.5-2.5% of Si, 0.5-5.0% of Mn and 0.01-0.1% of one or more of Sn, Bi, Sb and Ge. In addition, before the high-strength steel is subjected to hot-dip galvanizing, the high-strength steel is heated in a non-oxidizing atmosphere with the dew point temperature being lower than minus 40 DEG C, the heating temperature ranges from 500 DEG C to 900 DEG C, and the average temperature rise speed of heating is smaller than or equal to 20 DEG C/second. The high-strength steel has good wettability relative to a hot-dip galvanizing bath, and the defect of galvanizing missing and the problem that the strength of a clad layer is reduced cannot occur in the hot-dip galvanizing process.
Description
Technical field
The application relates to steelmaking technical field, particularly relates to the processing method of a kind of high strength steel.
Background technology
In recent years, at automobile, household electrical appliances, building field, start to be widely used steel plate is carried out antirust place, surface
The steel plate of reason, especially hot-dip galvanized steel sheet.
Hot-dip galvanized steel sheet is generally adopted and is manufactured by the following method.First, surface of steel plate is implemented defat and/or acid
Wash and be carried out, or omit pretreatment procedure in preprocessing furnace by after the removing of surface of steel plate oil firing, logical
Cross in non-oxidizing atmosphere, carry out heat treatment.Thereafter, it is cooled to steel plate in non-oxidizing atmosphere be suitable for
The temperature of hot-dip, avoid with atmosphere under conditions of immerse galvanizing by dipping bath in, galvanizing by dipping bath in
Other alloying elements may be added with, such as Al, Mg, Ti, Si, Sn etc..Thus surface of steel plate is melted
Galvanizing by dipping bath is plated, obtains hot-dip galvanized steel sheet.
In recent years, along with the raising that automobile carbon emission is required, high strength steel is used to promote body lightening
Work constantly advances, and the use of the high-strength hot-dip galvanized steel sheet with rust-preventing characteristic is gradually increased.The height of steel plate
Intensity usually realizes by adding the units such as Si, Mn.Si and Mn can play solid solution in high-strength steel sheet
The effect of strengthening.Additionally, the interpolation of appropriate Si and Mn element, additionally it is possible to make steel plate in heat treatment process
In undergo phase transition, form the multiple phase such as martensite, austenite, bainite, it is achieved phase transformation strengthening.
But, hot-dip galvanized steel sheet as above carries out heat treatment, Si, the Mn in steel and oxygen before plating
Affinity higher, even if so also optionally aoxidized in reducing atmosphere and surface of steel plate formed oxygen
Compound.These oxides reduce the wettability of surface of steel plate, therefore during plating, become and form plating leakage defect
Reason.Even if it addition, be not up to the degree of plating leakage, there is also and make coating strength reduce such problem.
For such problem, existing scheme takes series of measures.
Such as, control hydrogen partial pressure and steam partial pressure in heat treatment process and improve high strength steel surface and heat
The infiltrating technology of zinc immersion.But the span of control of the hydrogen partial pressure of this technology and steam partial pressure is with high
Strength steel composition and heat treatment process have substantial connection, it is difficult to be generalized in the production of other high strength steels.Change
Yan Zhi, if in continuous flow procedure, arranges have different high strength steels to produce continuously, owing to hydrogen divides
Pressure and steam partial pressure are all difficult to Rapid Variable Design, then be difficult to apply this technology.
The most such as, the atmosphere by controlling the oxygen concentration etc. in heat treatment warm guarantees good coating
The technology of quality.But this technology also composition and heat treatment process with high strength steel has substantial connection, it is difficult to
Continuous flow procedure is quickly applied.
The most such as, by the hot-dip technology at surface of steel plate preplating Ni.This technology processes at steel plate hot advances
Row surface preplating Ni, then removes preplating Ni in surface at heat treatment by chemically or physically method.Though the method
So solve Si and Mn surface of steel plate formed oxide problem, but significantly increase production process and
Materials demand, needs install the device of preplating Ni the most afterwards and remove the device of preplating Ni, and
Ni to be consumed, significantly increases manufacturing cost, improves complex procedures degree so that on substandard products probability of happening
Rise.
Summary of the invention
Invention provides the processing method of a kind of high strength steel, between this high strength steel and galvanizing by dipping bath
There is good wellability, will not occur what plating leakage defect and coating strength reduced to ask in hot dip galvanizing process
Topic.
For solving above-mentioned technical problem, the invention provides a kind of high strength steel for galvanizing by dipping, high-strength
Degree steel comprises by weight percentage:
Si:0.5%～2.5%；Mn:0.5%～5.0%；It addition, also comprise 0.01%～0.1% Sn, Bi,
In Sb, Ge one or more, surplus is Fe；
The manufacture method of described high strength steel includes:
Described high strength steel is heated by the dew point temperature non-oxidizing atmosphere less than-40 DEG C, heating temperature
Degree scope is: 500 DEG C～900 DEG C, and heating average heating speed is less than or equal to 20 DEG C/sec；
Described high strength steel is carried out galvanizing by dipping.
Preferably, Si:0.5%～2.0%, Mn:0.5%～4.0%, it addition, also comprise 0.03%～0.08%
In Sn, Bi, Sb, Ge one or more, surplus is Fe.
Preferably, Si:0.5%～1.8%, Mn:0.8%～3.5%, it addition, also comprise 0.04%～0.08%
In Sn, Bi, Sb, Ge one or more, surplus is Fe.
Preferably, Si:0.5%～1.2%, Mn:1.2%～3.5%, it addition, also comprise 0.05%～0.07%
In Sn, Bi, Sb, Ge one or more, surplus is Fe.
Preferably, described described high strength steel is carried out galvanizing by dipping before, described method also includes:
Described high strength steel is carried out cooling process.
The invention discloses a kind of high strength steel, described high strength steel comprises by weight percentage: Si:0.5%
～2.5%；Mn:0.5%～5.0%；It addition, also comprise in Sn, Bi, Sb, Ge of 0.01%～0.1% one
Plant or multiple；Surplus is Fe.
Preferably, described high strength steel comprises by weight percentage:
Si:0.5%～2.0%, Mn:0.5%～4.0%, it addition, also comprise 0.03%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
Preferably, described high strength steel comprises by weight percentage:
Si:0.5%～1.8%, Mn:0.8%～3.5%, it addition, also comprise 0.04%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
Preferably, described high strength steel comprises by weight percentage:
Si:0.5%～1.2%, Mn:1.2%～3.5%, it addition, also comprise 0.05%～0.07% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
By one or more technical scheme of the present invention, the invention have the advantages that or advantage:
The invention discloses the processing method of a kind of high strength steel, high strength steel comprises by weight percentage: Si:
0.5%～2.5%；Mn:0.5%～5.0%；It addition, also comprise Sn, Bi, Sb, Ge of 0.01%～0.1%
In one or more；And before high strength steel carries out galvanizing by dipping, can be to non-less than-40 DEG C of dew point temperature
In oxidizing atmosphere heating described high strength steel, heating temperature range is: 500 DEG C～900 DEG C, heating
Average heating speed is less than or equal to 20 DEG C/sec.In order to make one or more energy of Sn, Bi, Sb, Ge of interpolation
Enough abundant segregations are to grain boundary sites and surface, and the temperature that steel plate hot processes can not be the lowest, and firing rate can not be too
Hurry up.Learn according to result of study, to be heated to more than 500 DEG C less than 20 DEG C/sec, can obtain fully
One or more Elemental redistribution of Sn, Bi, Sb, Ge of segregation.But the temperature of heating can not be the highest, dew point
Temperature can not be the highest, and the oxygen that otherwise ferrum can be remaining with atmosphere at high temperature occurs chemical reaction, is formed and causes
The sull of close ferrum, hinders the segregation of one or more elements of Sn, Bi, Sb, Ge, and reduces
Wellability.Learn according to result of study, heat in dew point temperature is not higher than the atmosphere of-40 DEG C and be less than
900 DEG C, the ferroso-ferric oxide sull of densification can be avoided the formation of, and then this high strength steel is in hot-dip
The problem that plating leakage defect and coating strength reduce will not occur after zinc.
Accompanying drawing explanation
Fig. 1 is continuous net-shaped oxide pattern schematic diagram in the embodiment of the present invention；
Fig. 2 is isolated island oxide pattern schematic diagram in the embodiment of the present invention.
Detailed description of the invention
In order to make the application the technical staff in the technical field be more clearly understood that the application, below in conjunction with
Accompanying drawing, is described in detail technical scheme by specific embodiment.
First, will be described in the high strength steel in the present invention.It should be noted that in the present invention, high
Intensity refers to that hot strength is more than 440MPa.It addition, the high-strength and high-ductility galvannealed steel sheet of the present invention
Comprise any one in cold-rolled steel sheet, hot rolled steel plate.
High strength steel comprises by weight percentage: Si:0.5%～2.5%；Mn:0.5%～5.0%；It addition,
Also comprising one or more in Sn, Bi, Sb, Ge of 0.01%～0.1%, surplus is Fe.
Si is most important element in terms of the mechanical property improving high-strength steel sheet, therefore steel needs containing
The Si of weight ratio more than 0.1%.But, if Si is more than 2.5%, it is difficult to the generation of inhibited oxidation film, makes
The bond strength of coating declines.Therefore, Si is set to 0.1～2.5%.Preferably, Si content range is
0.5%～2.0%, particularly preferred, Si content range is 0.5%～1.8%, and most preferably, Si content range is
0.5%～1.2%.
Mn is solution strengthening element, is effective for realizing the high intensity of steel plate, it is therefore desirable to containing weight
Amount ratio is more than 0.1%.On the other hand, if Mn is more than 5.0%, weldability, coat binding strength decline,
And it is difficult to ensure that intensity ductility balances.Therefore, Mn is set to 0.1～5.0%.Preferably, Mn content model
Enclosing is 0.5%～4.0%, particularly preferred, and Mn content range is 0.8%～3.5%, and most preferably, Mn contains
Weight range is 1.2%～3.5%.
Sn, Bi, Sb, Ge are all the Surface Segregation elements in ferrum, easily at ferrite in heat treatment process
Segregation is there is with austenite grain boundary position and steel matrix surface.Additionally, Sn, Bi, Sb, Ge and the knot of oxygen
Make a concerted effort all poor than ferrum, be not easy to form steady oxide with oxygen in heat treatment process.Therefore, weight is added
Inclined to crystal boundary and steel matrix surface of Si and Mn can be hindered than Sn, Bi, Sb, the Ge being 0.01%
It is poly-so that the oxide pattern of Si is changed into isolated island (shown in Fig. 2) from continuous net-shaped (shown in Fig. 1),
Such that it is able to the wellability improved between steel matrix surface and galvanizing by dipping bath.But, these elements can compare
Reduce the ductility of high strength steel significantly, deteriorate the impact property of high strength steel, destroy the equal of high strength steel
Even property, the interpolation upper limit of these elements is not to be exceeded 0.1%.Therefore, the one in Sn, Bi, Sb, Ge
Or multiple interpolation scope is 0.01～0.1%.Preferably, one or more in Sn, Bi, Sb, Ge
Interpolation scope is 0.03%～0.08%, particularly preferred, adding of one or more in Sn, Bi, Sb, Ge
Adding scope is 0.04%～0.08%, most preferably, and the interpolation model of one or more in Sn, Bi, Sb, Ge
Enclose is 0.05%～0.07%.
It follows that the manufacture method of the high strength steel of the present invention is illustrated.
Before steel plate is carried out galvanizing by dipping, carry out following heat treatment, i.e. be less than-40 DEG C in dew point temperature
In non-oxidizing atmosphere heating steel plate, heating minimum temperature is 500 DEG C, and maximum temperature is 900 DEG C,
Heating average heating speed is less than or equal to 20 DEG C/sec.After doing this process, by steel plate in non-oxidizing atmosphere
Be cooled to be suitable for hot-dip temperature, avoid with atmosphere under conditions of immerse galvanizing by dipping bath in, heat
Zinc immersion bath may be added with other alloying elements, such as Al, Mg, Ti, Si, Sn etc..Thus steel plate table
Face is plated in melted galvanizing by dipping bath, obtains hot-dip galvanized steel sheet.
In order to enable one or more fully segregations of Sn, Bi, Sb, Ge of interpolation to grain boundary sites and surface,
The temperature that steel plate hot processes can not be the lowest, and firing rate can not be the fastest.Learn according to result of study, with not
Be heated to more than 500 DEG C more than 20 DEG C/sec, can obtain abundant segregation Sn, Bi, Sb, Ge mono-kind or
Several Elemental redistribution.But the temperature of heating can not be the highest, and dew point temperature can not be the highest, otherwise ferrum can be with
At high temperature there is chemical reaction in oxygen remaining in atmosphere, forms the sull of fine and close ferrum, hinder Sn,
The segregation of one or more elements of Bi, Sb, Ge, and reduce wellability.Learn according to result of study,
In the atmosphere that dew point temperature is not higher than-40 DEG C, heating is less than 900 DEG C, can avoid the formation of four oxidations of densification
Three oxide ferroelectric thin films.
Preferably, described high strength steel comprises by weight percentage: Si:0.5%～2.0%, Mn:0.5%～4.0%,
It addition, also comprise one or more in Sn, Bi, Sb, Ge of 0.03%～0.08%, surplus is Fe.
Particularly preferred, described high strength steel comprises by weight percentage: Si:0.5%～1.8%, Mn:
0.8%～3.5%, it addition, also comprise one or more in Sn, Bi, Sb, Ge of 0.04%～0.08%, remaining
Amount is Fe.
Most preferably, described high strength steel comprises by weight percentage: Si:0.5%～1.2%, Mn:
1.2%～3.5%, it addition, also comprise one or more in Sn, Bi, Sb, Ge of 0.05%～0.07%, remaining
Amount is Fe.
Explanation to the embodiment of the present invention presented below
[embodiment and comparative example]
Use thickness be 0.80mm width be the steel plate of 1200mm as steel matrix 1, steel plate is implemented at heat
Reason and galvanizing by dipping process, and the zinc liquefaction of galvanizing by dipping is learned mass percent and is: Al:0.2%, surplus is Zn.
Use the assessment experimental evaluation quality of surface of steel plate galvanizing by dipping coating.Table 1 lists the chemistry one-tenth of steel plate
Point, table 2 lists experimental result.
Table 1 (percentage by weight %)
Table 2
About coating plating leakage, using visual means, the situation that there is obvious plating leakage defect is designated as ×, will deposit
Situation in a small amount of plating leakage defect is designated as, and the situation that there will be no plating leakage defect is designated as zero.
About coating strength, by clad steel sheet bending 180 °, then visually whether bending outer fringe surface has coating
Come off, by exist the situation that obvious coating comes off be designated as ×, be designated as by there is the situation that a small amount of coating comes off,
There will be no the situation that coating comes off and be designated as zero.
By one or more embodiment of the present invention, the invention have the advantages that or advantage:
The invention discloses the processing method of a kind of high strength steel, high strength steel comprises by weight percentage: Si:
0.5%～2.5%；Mn:0.5%～5.0%；It addition, also comprise Sn, Bi, Sb, Ge of 0.01%～0.1%
In one or more；And before high strength steel carries out galvanizing by dipping, can be to non-less than-40 DEG C of dew point temperature
In oxidizing atmosphere heating described high strength steel, heating temperature range is: 500 DEG C～900 DEG C, heating
Average heating speed is less than or equal to 20 DEG C/sec.In order to make one or more energy of Sn, Bi, Sb, Ge of interpolation
Enough abundant segregations are to grain boundary sites and surface, and the temperature that steel plate hot processes can not be the lowest, and firing rate can not be too
Hurry up.Learn according to result of study, to be heated to more than 500 DEG C less than 20 DEG C/sec, can obtain fully
One or more Elemental redistribution of Sn, Bi, Sb, Ge of segregation.But the temperature of heating can not be the highest, dew point
Temperature can not be the highest, and the oxygen that otherwise ferrum can be remaining with atmosphere at high temperature occurs chemical reaction, is formed and causes
The sull of close ferrum, hinders the segregation of one or more elements of Sn, Bi, Sb, Ge, and reduces
Wellability.Learn according to result of study, heat in dew point temperature is not higher than the atmosphere of-40 DEG C and be less than
900 DEG C, the ferroso-ferric oxide sull of densification can be avoided the formation of, and then this high strength steel is in hot-dip
The problem that plating leakage defect and coating strength reduce will not occur after zinc.
Although having been described for the preferred embodiment of the application, but one of ordinary skilled in the art once learning
Basic creative concept, then can make other change and amendment to these embodiments.So, appended power
Profit requires to be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the application scope.
Obviously, those skilled in the art can carry out various change and modification without deviating from this Shen to the application
Spirit and scope please.So, if the application these amendment and modification belong to the application claim and
Within the scope of its equivalent technologies, then the application is also intended to comprise these change and modification.
Claims (9)
1. the processing method of a high strength steel, it is characterised in that
Described high strength steel is heated by the dew point temperature non-oxidizing atmosphere less than-40 DEG C, heating temperature
Degree scope is: 500 DEG C～900 DEG C, and heating average heating speed is less than or equal to 20 DEG C/sec；Described high strength steel
Comprise by weight percentage: Si:0.5%～2.5%；Mn:0.5%～5.0%；It addition, also comprise 0.01%
～0.1% Sn, Bi, Sb, Ge in one or more；Surplus is Fe；
Described high strength steel is carried out galvanizing by dipping.
The processing method of a kind of high strength steel the most as claimed in claim 1, it is characterised in that described high-strength
Degree steel comprises by weight percentage:
Si:0.5%～2.0%, Mn:0.5%～4.0%, it addition, also comprise 0.03%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
The processing method of a kind of high strength steel the most as claimed in claim 1, it is characterised in that described high-strength
Degree steel comprises by weight percentage:
Si:0.5%～1.8%, Mn:0.8%～3.5%, it addition, also comprise 0.04%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
The processing method of a kind of high strength steel the most as claimed in claim 1, it is characterised in that described high-strength
Degree steel comprises by weight percentage:
Si:0.5%～1.2%, Mn:1.2%～3.5%, it addition, also comprise 0.05%～0.07% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
The processing method of a kind of high strength steel the most as claimed in claim 1, it is characterised in that described to institute
Stating before high strength steel carries out galvanizing by dipping, described method also includes:
Described high strength steel is carried out cooling process.
6. a high strength steel, it is characterised in that described high strength steel comprises by weight percentage: Si:0.5%
～2.5%；Mn:0.5%～5.0%；It addition, also comprise in Sn, Bi, Sb, Ge of 0.01%～0.1% one
Plant or multiple；Surplus is Fe.
7. high strength steel as claimed in claim 6, it is characterised in that described high strength steel percentage by weight
Ratio comprises:
Si:0.5%～2.0%, Mn:0.5%～4.0%, it addition, also comprise 0.03%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
8. high strength steel as claimed in claim 6, it is characterised in that described high strength steel percentage by weight
Ratio comprises:
Si:0.5%～1.8%, Mn:0.8%～3.5%, it addition, also comprise 0.04%～0.08% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
9. high strength steel as claimed in claim 6, it is characterised in that described high strength steel percentage by weight
Ratio comprises:
Si:0.5%～1.2%, Mn:1.2%～3.5%, it addition, also comprise 0.05%～0.07% Sn, Bi,
In Sb, Ge one or more, surplus is Fe.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591717A (en) * | 2016-12-01 | 2017-04-26 | 首钢总公司 | Method for improving platability of medium and high manganese steel |
| WO2024256062A1 (en) * | 2023-06-12 | 2024-12-19 | Sms Group Gmbh | Process for producing a coated steel strip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006097067A (en) * | 2004-09-29 | 2006-04-13 | Nisshin Steel Co Ltd | Method for producing high strength alloyed hot dip galvanized steel sheet having excellent workability |
| CN102378824B (en) * | 2009-03-31 | 2014-03-12 | 杰富意钢铁株式会社 | High-strength hot-dip galvanized steel plate and method for producing same |
| JP5555992B2 (en) * | 2008-09-05 | 2014-07-23 | Ｊｆｅスチール株式会社 | Manufacturing method of high-strength hot-dip galvanized steel sheet with excellent surface appearance and plating adhesion |
| JP2015151606A (en) * | 2014-02-18 | 2015-08-24 | Ｊｆｅスチール株式会社 | High strength hot-dip galvanized steel sheet and method for producing the same |
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| JP2006097067A (en) * | 2004-09-29 | 2006-04-13 | Nisshin Steel Co Ltd | Method for producing high strength alloyed hot dip galvanized steel sheet having excellent workability |
| JP5555992B2 (en) * | 2008-09-05 | 2014-07-23 | Ｊｆｅスチール株式会社 | Manufacturing method of high-strength hot-dip galvanized steel sheet with excellent surface appearance and plating adhesion |
| CN102378824B (en) * | 2009-03-31 | 2014-03-12 | 杰富意钢铁株式会社 | High-strength hot-dip galvanized steel plate and method for producing same |
| JP2015151606A (en) * | 2014-02-18 | 2015-08-24 | Ｊｆｅスチール株式会社 | High strength hot-dip galvanized steel sheet and method for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106591717A (en) * | 2016-12-01 | 2017-04-26 | 首钢总公司 | Method for improving platability of medium and high manganese steel |
| CN106591717B (en) * | 2016-12-01 | 2019-02-22 | 首钢集团有限公司 | A method for improving the platability of medium and high manganese steel |
| WO2024256062A1 (en) * | 2023-06-12 | 2024-12-19 | Sms Group Gmbh | Process for producing a coated steel strip |
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