CN105624577B - The manufacture method of Fire-resistant Steels Used in Buildings material - Google Patents

The manufacture method of Fire-resistant Steels Used in Buildings material Download PDF

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Publication number
CN105624577B
CN105624577B CN201610036632.2A CN201610036632A CN105624577B CN 105624577 B CN105624577 B CN 105624577B CN 201610036632 A CN201610036632 A CN 201610036632A CN 105624577 B CN105624577 B CN 105624577B
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fire
temperature
buildings
cooled
manufacture
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CN105624577A (en
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王剑平
王雪峰
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Guigang Ruicheng Technology Co Ltd
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GUANGXI LIUZHOU ZHONGJIA INTELLECTUAL PROPERTY RIGHTS SERVICE CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32Ferrous alloys, e.g. steel alloys containing chromium with boron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Abstract

The invention discloses a kind of manufacture method of Fire-resistant Steels Used in Buildings material, is related to building material technical field, and this method includes heating steel billet, heated 60 90 minutes at 1,100 1250 DEG C;Steel billet is rolled after coming out of the stove, and start rolling temperature is 980 1070 DEG C, and finishing temperature is 750 850 DEG C;When 700 DEG C are air-cooled to after rolling, 450 500 DEG C are cooled to 8 10 DEG C/s cooling velocity, then is air-cooled to room temperature, is then tempered 30 60 minutes at 550 600 DEG C, tempering terminates rear natural air cooling to room temperature.The present invention solves the problems, such as that the fire resistance of existing building steel itself is relatively low.

Description

The manufacture method of Fire-resistant Steels Used in Buildings material
Technical field
The present invention relates to building material technical field, especially a kind of manufacture method of Fire-resistant Steels Used in Buildings material.
Background technology
Steel plate has the advantages that intensity is high, anti-seismic performance is good and it is quick to construct, and is good structure material, current is big Type is built and skyscraper is mostly steel building, but common Constructional Steel its intensity and bearing capacity when heated It will rapidly reduce, once meet with fire using the steel building of this steel, steel construction heat intensity is reduced and easily made Into the generation of the malignant fire accident such as building collapsing.In order to strengthen the fire protecting performance of steel, existing method is in steel table Face spray refractory coating, the thickness of refractory coating relatively after, not only increase the weight of steel construction, and add building cost, In actual use, spalling easily occurs for thicker refractory coating, and then influences the fire protecting performance of steel construction.Improve steel The fire resistance of material in itself, it could effectively meet the fire safety performance requirement of steel building.
The content of the invention
It is an object of the invention to provide a kind of manufacture method of Fire-resistant Steels Used in Buildings material, it can solve the problem that existing building steel The problem of fire resistance of material itself is relatively low.
In order to solve the above problems, the technical solution adopted by the present invention is:A kind of manufacture method of Fire-resistant Steels Used in Buildings material Comprise the following steps:Steel billet is sent into heating furnace and heated, and heating-up temperature is 1100-1250 DEG C, and the heat time is 60-90 minutes; Steel billet is rolled after coming out of the stove, and start rolling temperature is 980-1070 DEG C, and finishing temperature is 750-850 DEG C;700 DEG C are air-cooled to after rolling When, 450-500 DEG C is cooled to 8-10 DEG C/s cooling velocity, then room temperature is air-cooled to, then it is tempered at 550-600 DEG C Processing, tempering time is 30-60 minutes, and tempering terminates rear natural air cooling to room temperature;The steel billet contains including following quality percentage The chemical composition of amount:C0.08-0.11%, Si0.1-0.35%, Mn0.6-1.2%, Ti0.01-0.025%, V0.01-0.2%, Mo0.01-0.02%, Cr0.15-0.3%, Nb0.02-0.04%, B0.001-0.003%, Al0.01-0.06%, remaining is for Fe and not Evitable impurity.
In the technical scheme of the manufacture method of above-mentioned Fire-resistant Steels Used in Buildings material, more specifically technical scheme can also be: C0.098%, Si0.32%, Mn1.06%, Ti0.015%, V0.1%, Mo0.015%, Cr0.22%, Nb0.03%, B0.002%, Al0.03%, remaining is Fe and inevitable impurity.
Further, C0.08%, Si0.1%, Mn0.6%, Ti0.01%, V0.01%, Mo0.01%, Cr0.3%, Nb0.02%, B0.003%, Al0.06%, remaining is Fe and inevitable impurity.
Further, C0.11%, Si0.35%, Mn1.2%, Ti0.025%, V0.2%, Mo0.02%, Cr0.3%, Nb0.04%, B0.001%, Al0.01%, remaining is Fe and inevitable impurity.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art:It is rear cold to rolling But the restriction of speed, intensity can be improved, keeps toughness constant;Temper can effectively improve the elevated temperature strength of steel, make Its yield strength at high temperature does not reduce too much;Si can promote ferritic formation, suppress growing up for cementite, improve steel Elevated temperature strength;Mn, which plays deoxidation, prevents brittle effect;Ti and V can increase the creep rupture strength of steel and resisting for creep Power, improve the plasticity and toughness after steel welding;Mo, Cr, Nb can effectively improve steel elevated temperature strength;Mo contents can be reduced by adding B, in height Temperature is lower can to keep good structure stability, obtain the good refractory steel of combination property;Al is strong deoxidant element, is formed with N AlN forms crystal grain thinning, improves intensity, while can also improve the decay resistance of steel;The yield strength of steel reaches 670MPa More than, elongation percentage is more than 23%, and 600 DEG C of high temperature lower yield strengths are more than 2/3 at room temperature.
Embodiment
With reference to embodiment, the present invention is described in further detail:
Embodiment 1
The Fire-resistant Steels Used in Buildings material of the present embodiment includes the chemical composition of following weight/mass percentage composition:C0.098%, Si0.32%, Mn1.06%, Ti0.015%, V0.1%, Mo0.015%, Cr0.22%, Nb0.03%, B0.002%, Al0.03%, remaining For Fe and inevitable impurity.
During production, smelted using converter by above-mentioned chemical composition, after external refining, continuous casting steel billet, steel billet is sent Enter in heating furnace and heat, heating-up temperature is 1150 DEG C, and the heat time is 80 minutes;Steel billet is rolled after coming out of the stove, start rolling temperature For 1020 DEG C, finishing temperature is 800 DEG C;When 700 DEG C are air-cooled to after rolling, 480 DEG C are cooled to 10 DEG C/s cooling velocity, then it is empty It is cooled to room temperature, temper is then carried out at 570 DEG C, tempering time is 45 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property that the present embodiment manufactures obtained Fire-resistant Steels Used in Buildings material is as follows:Room-temperature yield strength 705MPa, prolongs Stretch rate 26%;600 DEG C of yield strength 498MPa, fire resistance are good.
Embodiment 2
The Fire-resistant Steels Used in Buildings material of the present embodiment includes the chemical composition of following weight/mass percentage composition:C0.08%, Si0.1%, Mn0.6%, Ti0.01%, V0.01%, Mo0.01%, Cr0.3%, Nb0.02%, B0.003%, Al0.06%, remaining is Fe and can not kept away The impurity exempted from.
During production, converter smelting is used by above-mentioned chemical composition, after external refining, continuous casting steel billet, steel billet is sent into heating Heated in stove, heating-up temperature is 1100 DEG C, and the heat time is 90 minutes;Steel billet is rolled after coming out of the stove, start rolling temperature 980 DEG C, finishing temperature is 750 DEG C;When 700 DEG C are air-cooled to after rolling, 500 DEG C are cooled to 8 DEG C/s cooling velocity, then be air-cooled to room Temperature, temper is then carried out at 550 DEG C, tempering time is 60 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property that the present embodiment manufactures obtained Fire-resistant Steels Used in Buildings material is as follows:Room-temperature yield strength 685MPa, prolongs Stretch rate 24.5%;600 DEG C of yield strength 482MPa, fire resistance are good.
Embodiment 3
The Fire-resistant Steels Used in Buildings material of the present embodiment includes the chemical composition of following weight/mass percentage composition:C0.11%, Si0.35%, Mn1.2%, Ti0.025%, V0.2%, Mo0.02%, Cr0.3%, Nb0.04%, B0.001%, Al0.01%, remaining is Fe And inevitable impurity.
During production, smelted by above-mentioned chemical composition using converter, after external refining, continuous casting steel billet, steel billet is sent into Heated in heating furnace, heating-up temperature is 1250 DEG C, and the heat time is 60 minutes;Steel billet is rolled after coming out of the stove, and start rolling temperature is 1070 DEG C, finishing temperature is 850 DEG C;When 700 DEG C are air-cooled to after rolling, 450 DEG C, then air cooling are cooled to 9 DEG C/s cooling velocity To room temperature, temper is then carried out at 600 DEG C, tempering time is 30 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property that the present embodiment manufactures obtained Fire-resistant Steels Used in Buildings material is as follows:Room-temperature yield strength 670MPa, prolongs Stretch rate 23.5%;600 DEG C of yield strength 466MPa, fire resistance are good.

Claims (4)

1. a kind of manufacture method of Fire-resistant Steels Used in Buildings material, it is characterised in that comprise the following steps:Steel billet, which is sent into heating furnace, to be added Heat, heating-up temperature are 1100-1250 DEG C, and the heat time is 60-90 minutes;Steel billet is rolled after coming out of the stove, and start rolling temperature is 980-1070 DEG C, finishing temperature is 750-850 DEG C;When 700 DEG C are air-cooled to after rolling, it is cooled to 8-10 DEG C/s cooling velocity 450-500 DEG C, then room temperature is air-cooled to, temper is then carried out at 550-600 DEG C, tempering time is 30-60 minutes, tempering Natural air cooling is to room temperature after end;The steel billet includes the chemical composition of following weight/mass percentage composition:C0.08-0.11%, Si0.1-0.35%, Mn0.6-1.2%, Ti0.01-0.025%, V0.01-0.2%, Mo0.01-0.02%, Cr0.15-0.3%, Nb0.02-0.04%, B0.001-0.003%, Al0.01-0.06%, remaining is Fe and inevitable impurity.
2. the manufacture method of Fire-resistant Steels Used in Buildings material according to claim 1, it is characterised in that:C0.098%, Si0.32%, Mn1.06%, Ti0.015%, V0.1%, Mo0.015%, Cr0.22%, Nb0.03%, B0.002%, Al0.03%, remaining is for Fe and not Evitable impurity.
3. the manufacture method of Fire-resistant Steels Used in Buildings material according to claim 1, it is characterised in that:C0.08%, Si0.1%, Mn0.6%, Ti0.01%, V0.01%, Mo0.01%, Cr0.3%, Nb0.02%, B0.003%, Al0.06%, remaining is Fe and can not kept away The impurity exempted from.
4. the manufacture method of Fire-resistant Steels Used in Buildings material according to claim 1, it is characterised in that:C0.11%, Si0.35%, Mn1.2%, Ti0.025%, V0.2%, Mo0.02%, Cr0.3%, Nb0.04%, B0.001%, Al0.01%, remaining is Fe and can not kept away The impurity exempted from.
CN201610036632.2A 2016-01-20 2016-01-20 The manufacture method of Fire-resistant Steels Used in Buildings material Active CN105624577B (en)

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CN112779473A (en) * 2021-01-21 2021-05-11 江苏沪之通金属制品有限公司 Fire-resistant steel with fire-resistant temperature of 600 ℃ and preparation method thereof

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CN1132958C (en) * 2001-10-17 2003-12-31 武汉钢铁(集团)公司 High-performance refractory weather-resisting building steel and its production method
JP4656416B2 (en) * 2006-01-18 2011-03-23 株式会社神戸製鋼所 Refractory steel with excellent weldability
CN104775078B (en) * 2015-03-13 2017-07-07 武汉钢铁(集团)公司 The low-yield-ratio fire resistant structural steel and production method of a kind of Rel > 620MPa

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