CN107675100A - A kind of high intensity glazing steel and its heat treatment method - Google Patents

A kind of high intensity glazing steel and its heat treatment method Download PDF

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Publication number
CN107675100A
CN107675100A CN201710636043.2A CN201710636043A CN107675100A CN 107675100 A CN107675100 A CN 107675100A CN 201710636043 A CN201710636043 A CN 201710636043A CN 107675100 A CN107675100 A CN 107675100A
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steel
glazing
high intensity
heat treatment
treatment method
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朱鸣芳
姚剑锋
邢丽科
郭霞文
安栋
戴挺
布鲁斯·克拉考尔
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Southeast University
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Southeast University
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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
    • C22C38/18—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
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • 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
    • C22C38/02—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
    • C22C38/04—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
    • C22C38/06—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
    • 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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/22—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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

The invention discloses a kind of high intensity glazing steel, and it contains the composition of following mass percent：C≤0.07%；Mn：0.69~1.30%；P≤0.068%；S：0.001~0.025%；Si≤0.54%；Cu≤0.17%；Ni≤0.06%；Cr≤0.07%；Mo≤0.03%；Sn：0.004~0.012%；Al：0.02~0.21%；V≤0.012%；Nb≤0.013%；N：0.005~0.015%；Ti：0.002~0.023%；B≤0.005%；Ca≤0.005%；Surplus is Fe and other inevitable impurity.The invention also discloses the heat treatment method of above-mentioned high intensity glazing steel.Glazing steel of the present invention are under relatively thin thickness, still with good plasticity and high yield strength.

Description

A kind of high intensity glazing steel and its heat treatment method
Technical field
The present invention relates to a kind of high intensity glazing steel, the Technology for Heating Processing in above-mentioned glazing steel later stage is further related to.
Technical background
Glazing steel, also known as glassed steel, it is by different enamel production technologies, by SiO by enamel2, B2O3, Na2O with And the thickness of other oxide compositions is about that 100~500um unorganic glass material coatings are coated in steel plate (glazing steel) surface, And the advanced composite material (ACM) formed together with steel plate strong bonded.Therefore, it is with the intensity of steel, extensibility and glass Acid-alkali-corrosive-resisting, the advantages that polluted product, easy cleaning is not easy, so as to reach the purpose for improving performance, increasing the service life. These comprehensive advantages, at this stage, glazing steel, which is not only widely used in, makes kitchen utensils, oven, water heater liner, building dress Decoration panel etc., and in satellite launch center, the environmental protection of some areas sewage treatment project and some enterprises and bioenergy Batch application is obtained in engineering.
At present, both at home and abroad be used for produce glazing steel glazing steel (glazing steel) mainly have cold rolling boiling steel, titaniferous without Interstitial element steel, decarburized steel, Wai Feinei towns steel, containing aluminum killed steel and micro alloyed steel.Wherein micro alloyed steel has well cold Hot-forming property and weldability, good intensity, toughness can be issued at a fairly low cost, there is stronger practicality.
The microscopic structure of glazing steel has important influence to its performance, and its microscopic structure generally comprises ferrite, pearl Body of light, carbide and nonmetal inclusion etc., it is desirable to which glazing is as far as possible few with steel medium pearlite, and existing a small amount of pearlite should This is evenly distributed in around ferrite, to harm caused by enamel when reducing enamel firing；Ferritic crystal particle scale also should simultaneously It is as far as possible tiny, reduce the impurity content on crystal boundary in unit area.
Glazing is commonly used in high temperature, high pressure or the stronger environment of corrosivity with steel, and glazing is needed through too high with steel The process of warm glazing sintering, so have special performance requirement to it, including：Enamel adherence, scaling resistance, extensibility, with And yield strength etc..Steel matrix is in thermal cycle (800~900 DEG C) processing procedure for carrying out glass enamel sintering, yield strength The reduction of some strength occurs.To meet the requirement to plate property, it is necessary to which the thickness for increasing steel plate is sintering to make up it During yield strength reduction, so as to add the manufacturing cost of glazing steel.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high intensity glazing steel, and the glazing steel are relatively thin Thickness under still there is good plasticity and high yield strength.
The present invention also technical problems to be solved are to provide the heat treatment method of above-mentioned high intensity glazing steel.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of high intensity glazing steel, it contains the composition of following mass percent：C≤0.07%；Mn：0.69~ 1.30%；P≤0.068%；S：0.001~0.025%；Si≤0.54%；Cu≤0.17%；Ni≤0.06%；Cr≤ 0.07%；Mo≤0.03%；Sn：0.004~0.012%；Al：0.02~0.21%；V≤0.012%；Nb≤0.013%；N： 0.005~0.015%；Ti：0.002~0.023%；B≤0.005%；Ca≤0.005%；Surplus is Fe and other can not kept away The impurity exempted from.
The heat treatment method of above-mentioned high intensity glazing steel, comprises the following steps：
Step 1, glazing is placed in the acid solution that concentration is 20~24wt% with steel and cleaned 2~3 minutes；
Step 2, by the uniform daub of glazing steel surface after pickling；
Step 3, the glazing after the uniform daub of step 2 is made annealing treatment with steel；Wherein, annealing temperature 670 ~900 DEG C；
Step 4, the glazing after annealing is placed in air with steel and is cooled to room temperature；Wherein, 400 are cooled to from annealing temperature DEG C cooling rate be 3~4 DEG C/s.
Wherein, in step 1, acid solution is 20~24wt% of concentration hydrochloric acid.
Wherein, in step 2, the coating that glazing steel surface is smeared is heat-treated proprietary material, coating for anti-oxidant, anti-decarburization The coating layer thickness of formation is 0.160~0.200mm.
Wherein, in step 3, annealing time is 5~10 minutes.
Wherein, in step 4, glazing after annealing is air cooling with the steel type of cooling, and 400 DEG C cold is cooled to from annealing temperature Speed is 3~4 DEG C/s, is subsequently placed with naturally cooling to room temperature in atmosphere.
Carbon in steel is solution strengthening element, and phosphorus content is higher, and the intensity of steel plate is higher, but too high phosphorus content can be led Cause that peritectic reaction occurs in casting process, product surface is produced depression and the defects of lobe, the formability and welding performance of steel Also can be deteriorated, so steel plate carbon content of the present invention takes C≤0.07%；The solution strengthening that manganese element can strengthen in ferrite base body is made With, be advantageous to improve armor plate strength, but manganese content is excessively unfavorable for the lifting of elongation percentage, and the increase of manganese content is also easy to produce band Shape tissue, while the carbon equivalent of steel can be made to increase influence welding performance, so manganese content control is 0.69~1.30%.
Compared with prior art, technical solution of the present invention have the advantage that for：
Glazing of the present invention reaches combination property requirement with steel, under relatively thin thickness (1.400~1.450mm), its Yield strength is：Rp0.2 >=370MPa, tensile strength are：Rm >=450MPa, i.e., steel of the present invention are under relatively thin thickness, still So there is good plasticity and high yield strength；Illustrate that steel of the present invention need not improve it by increasing the thickness of steel plate Yield strength, so as to effectively reduce the manufacturing cost of glazing steel.
Brief description of the drawings
Fig. 1 is the microscopic structure of the glazing steel of the embodiment of the present invention 1.
Embodiment
Technical scheme is described further below by way of specific embodiment, but protection of the presently claimed invention Scope is not limited thereto.
Embodiment 1
High intensity glazing steel of the present invention, it is made up of the composition of following mass percent：C≤0.07%；Mn：0.69 ~1.30%；P≤0.068%；S：0.001~0.025%；Si≤0.54%；Cu≤0.17%；Ni≤0.06%；Cr≤ 0.07%；Mo≤0.03%；Sn：0.004~0.012%；Al：0.02~0.21%；V≤0.012%；Nb≤0.013%；N： 0.005~0.015%；Ti：0.002~0.023%；B≤0.005%；Ca≤0.005%；Surplus be Fe and it is other can not The impurity avoided.
The heat treatment method of high intensity glazing steel of the present invention, comprises the following steps：
Step 1, glazing is placed in the hydrochloric acid solution that concentration is 20~24wt% with steel and cleaned 2~3 minutes, pickling is appropriate Time is used for removing the oxide skin of steel surface, and the time can not be long, in order to avoid Fe and sour overreaction in glazing steel；
Step 2, by the uniform daub of glazing steel surface after pickling, the thickness of coating is 0.160~0.200mm； Uniform coating so that glazing is heated evenly with each region of steel in heat treatment process；
Step 3, the glazing after the uniform daub of step 2 is made annealing treatment with steel；Wherein, annealing temperature 670 ~900 DEG C, annealing time is 5 minutes；To realize that glazing is uniform with what is organized in steel, higher yield strength is obtained；
Step 4, the glazing after annealing is cooled down with steel using air cooling mode, 400 DEG C of cooling rate is cooled to from annealing temperature For 3~4 DEG C/s, it is subsequently placed with naturally cooling to room temperature in atmosphere.
The glazing steel of embodiment 1 (1.400~1.450mm) under relatively thin thickness, its yield strength are：Rp0.2≥ 370MPa, tensile strength are：Rm≥450MPa.
And glazing steel is under 1.400~1.450mm thickness in the prior art, general yield strength：Rp0.2≤ 180MPa, tensile strength：Rm≤270MPa, far smaller than the glazing steel of the embodiment of the present invention 1 yield strength and tensile strength.
Fig. 1 is the microscopic structure of the glazing steel of the embodiment of the present invention 1.From figure 1 it appears that in the embodiment of the present invention 1 Microscopic structure be ferrite and a small amount of pearlite being distributed at ferrite grain boundaries.The embodiment of the present invention 1 steel plate into Point and Technology for Heating Processing under, a certain amount of austenite is generated in annealing process, still has partial austenitic not turn in process air cooler It is changed into ferrite, so as to resolve into the pearlite of grain boundaries；In the presence of external force, a certain amount of lamellar pearly-lustre physical efficiency and iron Ferritic cooperative transformation, so as to improve the yield strength of steel.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.

Claims (6)

1. a kind of high intensity glazing steel, it is characterised in that it contains the composition of following mass percent：C≤0.07%； Mn：0.69~1.30%；P≤0.068%；S：0.001~0.025%；Si≤0.54%；Cu≤0.17%；Ni≤0.06%； Cr≤0.07%；Mo≤0.03%；Sn：0.004~0.012%；Al：0.02~0.21%；V≤0.012%；Nb≤ 0.013%；N：0.005~0.015%；Ti：0.002~0.023%；B≤0.005%；Ca≤0.005%；Surplus be Fe and Other inevitable impurity.
2. the heat treatment method of high intensity glazing steel described in claim 1, it is characterised in that comprise the following steps：
Step 1, glazing is placed in the acid solution that concentration is 20~24wt% with steel and cleaned 2~3 minutes；
Step 2, by the uniform daub of glazing steel surface after pickling；
Step 3, the glazing after the uniform daub of step 2 is made annealing treatment with steel；Wherein, annealing temperature is 670~900 ℃；
Step 4, the glazing after annealing is placed in air with steel and is cooled to room temperature；Wherein, 400 DEG C are cooled to from annealing temperature Cooling rate is 3~4 DEG C/s.
3. the heat treatment method of high intensity glazing steel according to claim 2, it is characterised in that：In step 1, acid solution For 20~24wt% of concentration hydrochloric acid.
4. the heat treatment method of high intensity glazing steel according to claim 2, it is characterised in that：In step 2, glazing The coating layer thickness that the coating smeared with steel surface is formed is 0.160~0.200mm.
5. the heat treatment method of high intensity glazing steel according to claim 2, it is characterised in that：In step 3, annealing Time is 5~10 minutes.
6. the heat treatment method of high intensity glazing steel according to claim 2, it is characterised in that：In step 4, annealing Glazing afterwards is air cooling with the steel type of cooling, and the cooling rate that 400 DEG C are cooled to from annealing temperature is 3~4 DEG C/s, is subsequently placed at sky Room temperature is naturally cooled in gas.
CN201710636043.2A 2017-07-28 2017-07-28 A kind of high intensity glazing steel and its heat treatment method Pending CN107675100A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109628714A (en) * 2018-12-18 2019-04-16 东南大学 A kind of heat treatment method improving low-alloy glazing steel yield strength

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1659298A (en) * 2002-06-12 2005-08-24 新日本制铁株式会社 Steel sheet for vitreous enameling and production method
CN101139684A (en) * 2006-09-05 2008-03-12 宝山钢铁股份有限公司 Hot-rolled high-strength steel plate for electrostatic enamel and method for manufacturing same
CN102251192A (en) * 2010-05-19 2011-11-23 宝山钢铁股份有限公司 Enamel steel and production method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1659298A (en) * 2002-06-12 2005-08-24 新日本制铁株式会社 Steel sheet for vitreous enameling and production method
CN101139684A (en) * 2006-09-05 2008-03-12 宝山钢铁股份有限公司 Hot-rolled high-strength steel plate for electrostatic enamel and method for manufacturing same
CN102251192A (en) * 2010-05-19 2011-11-23 宝山钢铁股份有限公司 Enamel steel and production method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109628714A (en) * 2018-12-18 2019-04-16 东南大学 A kind of heat treatment method improving low-alloy glazing steel yield strength

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