CN105624577A - Manufacturing method of fire resistant steel for building - Google Patents
Manufacturing method of fire resistant steel for building Download PDFInfo
- Publication number
- CN105624577A CN105624577A CN201610036632.2A CN201610036632A CN105624577A CN 105624577 A CN105624577 A CN 105624577A CN 201610036632 A CN201610036632 A CN 201610036632A CN 105624577 A CN105624577 A CN 105624577A
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- fire
- temperature
- steel
- air cooling
- heating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005496 tempering Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 8
- 239000004566 building material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C22C38/02—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a manufacturing method of fire resistant steel for a building, and relates to the technical field of building materials. The method comprises the steps of heating a steel blank for 60-90 minutes at 1100-1250 DEG C; rolling after the steel blank is discharged from a furnace, wherein the initial rolling temperature is 980-1070 DEG C, and the final rolling temperature is 750-850 DEG C; air cooling to 700 DEG C after rolling, cooling to 450-500 DEG C with a cooling speed of 8-10 DEG C/s, then air cooling to room temperature, afterwards tempering for 30-60 minutes at 550-600 DEG C, and naturally air cooling to room temperature after tempering is finished. The method solves the problem of lower fire resistance of traditional steel.
Description
Technical field
The present invention relates to building material technical field, the manufacture method of especially a kind of Fire-resistant Steels Used in Buildings material.
Background technology
Steel plate has that intensity height, anti-seismic performance be good and the advantage such as quick of constructing, it it is good structure material, current heavy construction and skyscraper are mostly steel building, but common Constructional Steel its intensity and bearing capacity when being heated all can reduce rapidly, using the steel building of this steel once meet with fire, steel construction heat intensity reduces and very easily causes the generation of the malignant fire accidents such as building collapsing. In order to strengthen the fire protecting performance of steel, existing method is in steel surface 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, easily there is spalling in thicker refractory coating, and then affects the fire protecting performance of steel construction. Improve the fire resistance of steel itself, could effectively meet the fire safety performance requirement of steel building.
Summary of the invention
It is an object of the invention to provide the manufacture method of a kind of Fire-resistant Steels Used in Buildings material, it can solve the problem that the problem that the fire resistance of existing building steel self is relatively low.
In order to solve the problems referred to above, the technical solution used in the present invention is: the manufacture method of a kind of Fire-resistant Steels Used in Buildings material comprises the following steps: heating in heating furnace sent into by steel billet, and heating-up temperature is 1100-1250 DEG C, and heat time heating time is 60-90 minute; Steel billet rolls after coming out of the stove, and start rolling temperature is 980-1070 DEG C, and finishing temperature is 750-850 DEG C; When rolling rear air cooling to 700 DEG C, being cooled to 450-500 DEG C with the rate of cooling of 8-10 DEG C/s, then air cooling is to room temperature, carry out temper subsequently at 550-600 DEG C, tempering time is 30-60 minute, and tempering terminates rear natural air cooling to room temperature; Described 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%, all the other are Fe and inevitable impurity.
In the technical scheme of the manufacture method of above-mentioned Fire-resistant Steels Used in Buildings material, technical scheme is it may also is that C0.098%, Si0.32%, Mn1.06% more specifically, Ti0.015%, V0.1%, Mo0.015%, Cr0.22%, Nb0.03%, B0.002%, Al0.03%, all the other are 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%, all the other are 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%, all the other are Fe and inevitable impurity.
Owing to have employed technique scheme, the present invention compared with prior art has the advantages that the restriction to cooling velocity after rolling, it is possible to improve intensity, keeps toughness constant; Temper can be effectively improved the elevated temperature strength of steel so that it is yield strength at high temperature does not reduce too much; Si can promote ferritic formation, it is suppressed that growing up of cementite, improves the elevated temperature strength of steel; Mn plays deoxidation and prevents the effect of fragility; Ti and V can increase the creep rupture strength of steel and the drag of creep, improves the plasticity and toughness after steel welding; Mo, Cr, Nb can be effectively improved steel elevated temperature strength; Add B and can reduce Mo content, at high temperature can keep good structure stability, it is thus achieved that the refractory steel that combination property is good; Al is strong deoxidant element, forms AlN with N and forms crystal grain thinning, improve intensity, also can improve the decay resistance of steel simultaneously; The yield strength of steel reaches more than 670MPa, and elongation percentage is more than 23%, and 600 DEG C of high temperature lower yield strengths are more than 2/3 under room temperature.
Detailed description of the invention
Below in conjunction with 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%, all the other are Fe and inevitable impurity.
During production, converter is adopted to smelt by above-mentioned chemical composition, after external refining, continuous casting steel billet, steel billet to be sent in heating furnace and heat, heating-up temperature is 1150 DEG C, and heat time heating time is 80 minutes; Steel billet rolls after coming out of the stove, and start rolling temperature is 1020 DEG C, and finishing temperature is 800 DEG C; When rolling rear air cooling to 700 DEG C, being cooled to 480 DEG C with the rate of cooling of 10 DEG C/s, then air cooling is to room temperature, carry out temper subsequently at 570 DEG C, tempering time is 45 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property of the Fire-resistant Steels Used in Buildings material that the present embodiment manufacture obtains is as follows: room-temperature yield strength 705MPa, elongation percentage 26%; 600 DEG C of yield strength 498MPa, fire resistance is 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%, and all the other are Fe and inevitable impurity.
During production, adopt converter smelting by above-mentioned chemical composition, after external refining, continuous casting steel billet, heating in heating furnace sent into by steel billet, and heating-up temperature is 1100 DEG C, and heat time heating time is 90 minutes; Steel billet rolls after coming out of the stove, and start rolling temperature is 980 DEG C, and finishing temperature is 750 DEG C; When rolling rear air cooling to 700 DEG C, being cooled to 500 DEG C with the rate of cooling of 8 DEG C/s, then air cooling is to room temperature, carry out temper subsequently at 550 DEG C, tempering time is 60 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property of the Fire-resistant Steels Used in Buildings material that the present embodiment manufacture obtains is as follows: room-temperature yield strength 685MPa, elongation percentage 24.5%; 600 DEG C of yield strength 482MPa, fire resistance is 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%, and all the other are Fe and inevitable impurity.
During production, converter is adopted to smelt by above-mentioned chemical composition, after external refining, continuous casting steel billet, heating in heating furnace sent into by steel billet, and heating-up temperature is 1250 DEG C, and heat time heating time is 60 minutes; Steel billet rolls after coming out of the stove, and start rolling temperature is 1070 DEG C, and finishing temperature is 850 DEG C; When rolling rear air cooling to 700 DEG C, being cooled to 450 DEG C with the rate of cooling of 9 DEG C/s, then air cooling is to room temperature, carry out temper subsequently at 600 DEG C, tempering time is 30 minutes, and tempering terminates rear natural air cooling to room temperature.
The room-temperature property of the Fire-resistant Steels Used in Buildings material that the present embodiment manufacture obtains is as follows: room-temperature yield strength 670MPa, elongation percentage 23.5%; 600 DEG C of yield strength 466MPa, fire resistance is good.
Claims (4)
1. the manufacture method of a Fire-resistant Steels Used in Buildings material, it is characterised in that comprise the following steps: heating in heating furnace sent into by steel billet, and heating-up temperature is 1100-1250 DEG C, and heat time heating time is 60-90 minute; Steel billet rolls after coming out of the stove, and start rolling temperature is 980-1070 DEG C, and finishing temperature is 750-850 DEG C; When rolling rear air cooling to 700 DEG C, being cooled to 450-500 DEG C with the rate of cooling of 8-10 DEG C/s, then air cooling is to room temperature, carry out temper subsequently at 550-600 DEG C, tempering time is 30-60 minute, and tempering terminates rear natural air cooling to room temperature; Described 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%, all the other are 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%, all the other are Fe and inevitable 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%, all the other are Fe and inevitable impurity.
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%, all the other are Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036632.2A CN105624577B (en) | 2016-01-20 | 2016-01-20 | The manufacture method of Fire-resistant Steels Used in Buildings material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036632.2A CN105624577B (en) | 2016-01-20 | 2016-01-20 | The manufacture method of Fire-resistant Steels Used in Buildings material |
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| Publication Number | Publication Date |
|---|---|
| CN105624577A true CN105624577A (en) | 2016-06-01 |
| CN105624577B CN105624577B (en) | 2017-11-17 |
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| CN201610036632.2A Active CN105624577B (en) | 2016-01-20 | 2016-01-20 | The manufacture method of Fire-resistant Steels Used in Buildings material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113652613A (en) * | 2021-08-19 | 2021-11-16 | 宁波彩燕建筑材料有限公司 | Building material and preparation method thereof |
| CN114032368A (en) * | 2021-11-26 | 2022-02-11 | 成都先进金属材料产业技术研究院股份有限公司 | Heat treatment method of ferritic stainless steel 00Cr18Mo2 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354273A (en) * | 2001-10-17 | 2002-06-19 | 武汉钢铁(集团)公司 | High-performance refractory weather-resisting building steel and its production method |
| CN101003881A (en) * | 2006-01-18 | 2007-07-25 | 株式会社神户制钢所 | Welding property excellent fire-resistant steel |
| CN104775078A (en) * | 2015-03-13 | 2015-07-15 | 武汉钢铁(集团)公司 | Low yield ratio steel (Rel>620MPa) for fireproof structure and production method thereof |
-
2016
- 2016-01-20 CN CN201610036632.2A patent/CN105624577B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354273A (en) * | 2001-10-17 | 2002-06-19 | 武汉钢铁(集团)公司 | High-performance refractory weather-resisting building steel and its production method |
| CN101003881A (en) * | 2006-01-18 | 2007-07-25 | 株式会社神户制钢所 | Welding property excellent fire-resistant steel |
| CN104775078A (en) * | 2015-03-13 | 2015-07-15 | 武汉钢铁(集团)公司 | Low yield ratio steel (Rel>620MPa) for fireproof structure and production method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113652613A (en) * | 2021-08-19 | 2021-11-16 | 宁波彩燕建筑材料有限公司 | Building material and preparation method thereof |
| CN114032368A (en) * | 2021-11-26 | 2022-02-11 | 成都先进金属材料产业技术研究院股份有限公司 | Heat treatment method of ferritic stainless steel 00Cr18Mo2 |
| CN114032368B (en) * | 2021-11-26 | 2023-05-30 | 成都先进金属材料产业技术研究院股份有限公司 | Heat treatment method of ferrite stainless steel 00Cr18Mo2 |
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| Publication number | Publication date |
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| CN105624577B (en) | 2017-11-17 |
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Effective date of registration: 20240610 Address after: 556000 Jiangshui Bridge, Xingshan Town, Majiang County, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Province Patentee after: Guizhou Hexing Steel Co.,Ltd. Country or region after: China Address before: No. 207, East Second Floor, Administration Committee of Shandong Pingyi Economic Development Zone, West Section of Jinhua Road, Pingyi County Economic Development Zone, Linyi City, Shandong Province, 276000 Patentee before: Pingyi Economic Development Zone Investment Development Co.,Ltd. Country or region before: China |