CN107829031A - A kind of big cross section H profile steel and its production technology - Google Patents

A kind of big cross section H profile steel and its production technology Download PDF

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Publication number
CN107829031A
CN107829031A CN201711162434.1A CN201711162434A CN107829031A CN 107829031 A CN107829031 A CN 107829031A CN 201711162434 A CN201711162434 A CN 201711162434A CN 107829031 A CN107829031 A CN 107829031A
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CN
China
Prior art keywords
profile steel
section
big cross
temperature
production technology
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN201711162434.1A
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Chinese (zh)
Inventor
章阳
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ANHUI KINGYOUNG STRUCTURAL METAL WORK Co Ltd
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ANHUI KINGYOUNG STRUCTURAL METAL WORK Co Ltd
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Priority to CN201711162434.1A priority Critical patent/CN107829031A/en
Publication of CN107829031A publication Critical patent/CN107829031A/en
Pending legal-status Critical Current

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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
    • 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
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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

Abstract

The invention discloses a kind of big cross section H profile steel and its production technology, the weight/mass percentage composition of the chemical composition of its material includes：Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, vanadium 0.10~0.20%, nitrogen≤0.012%, phosphorus≤0.01%, sulphur≤0.01%, niobium 0.03~0.05%, thallium 0.03~0.05%, polonium 0.03~0.05%, terbium 0.02~0.04%, nickel 0.01~0.02%, surplus are iron and impurity element.Big cross section H steel alloy contents produced by the invention are relatively low, and finishing temperature is high, reduces the load and energy consumption of milling train, improves production efficiency.

Description

A kind of big cross section H profile steel and its production technology
Technical field
The present invention relates to metallurgical technology field, specifically a kind of big cross section H profile steel and its production technology.
Background technology
Current H profile steel production capacity balances with domestic demand substantially, and exploitation big cross section low-alloy high-strength structure H profile steel can meet User's particular/special requirement new steel grade.The product high efficiency and market potential of these steel grades are big, and common steel mill can not produce.These products Reflect enterprise technology strength, hold the market of Hi-grade steel H profile steel, occupation rate of market can be increased.
Hot rolled H-shaped to have efficient energy-saving, cross sectional shape economical rationality, each point extension is uniformly and planted agent on section during rolling The advantages that power is small, it is widely used in skyscraper, factory building is built and the field such as communications and transportation.In recent years consumption statistical form Bright, H profile steel dosage for building is by the trend for continuing to rise.At present, the H profile steel largely used in engineering is distinguished with intensity rank Based on ordinary carbon steel and C-Mn low-alloy steel for Q235B or Q345B.It is high-strength with the high stratification of building and large span The demand for spending H profile steel will be increasing.Therefore the shaped steel for developing the new big cross section size with high intensity shows with what is wanted Sincere justice and economic value.
The cross dimensions of big cross section H profile steel generally refers to HW300mm × 300mm~HW1000mm × 300mm H profile steel. Difference be present in its production technology and composition design and the H profile steel of small dimension, to ensure the low-temperature impact toughness of high powerful H profile steel, Ensure low-temperature impact toughness while alloying element increase intensity need to be added during composition design, roll-force is significantly greater than small during hot rolling Specification H profile steel.
Current domestic big cross section H profile steel is produced using Hot Metal in Beam Blank, and Hot Metal in Beam Blank slab quality is production big cross section H profile steel Most distinct issues.
The content of the invention
The invention provides a kind of big cross section H profile steel and its production technology, to solve above-mentioned technical problem.
A kind of big cross section H profile steel, the weight/mass percentage composition of the chemical composition of its material include：
Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, vanadium 0.10~0.20%, nitrogen≤ 0.012%th, phosphorus≤0.01%, sulphur≤0.01%, niobium 0.03~0.05%, thallium 0.03~0.05%, polonium 0.03~0.05%, terbium 0.02~0.04%, nickel 0.01~0.02%, surplus are iron and impurity element.
Preferably, also comprising weight/mass percentage composition：Als >=0.015%.
A kind of production technology of big cross section H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down start rolling temperature 1000 DEG C, 960 DEG C of finish rolling start rolling temperature, 860 DEG C of finish rolling finishing temperature；
Cooling technique parameter is：Rolled piece is cooled to 700 DEG C of section phase transformations with 110 DEG C/s cooling velocities, then rises again to 780 DEG C, last H profile steel naturally cools to room temperature.
Beneficial effects of the present invention：
The beneficial effects of the invention are as follows：The present invention only adds micro alloying element V by rationally designing composition, improves big The combination property of section H profile steel, simple production process, beneficial to popularization；The micro alloying element V of the present invention is in big cross section H profile steel Play solution strengthening, ensure that the impact flexibility of steel.The present invention makes the mechanics of big cross section H profile steel by optimizing production method Performance fully meets user's requirement, and and can is produced in most easy, efficient method and manufacture big cross section H profile steel, reduces Production cost.Big cross section H steel alloy contents produced by the invention are relatively low, and finishing temperature is high, reduce the load and energy consumption of milling train, Improve production efficiency.
Embodiment
Embodiments of the invention are described in detail below, but what the present invention can be defined by the claims and cover Multitude of different ways is implemented.
Below by way of specific embodiment, the present invention will be described in detail.
Embodiment 1
A kind of big cross section H profile steel, the weight/mass percentage composition of the chemical composition of its material include：
Carbon 0.08%, silicon 0.15%, manganese 1.25%, vanadium 0.10%, nitrogen 0.008%, phosphorus 0.006%, sulphur 0.06%, niobium 0.03%th, thallium 0.03%, polonium 0.03%, terbium 0.02%, nickel 0.01%, Al s 0.015%, surplus are iron and impurity element, remaining Measure as iron and impurity element.
A kind of production technology of big cross section H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down start rolling temperature 1000 DEG C, 960 DEG C of finish rolling start rolling temperature, 860 DEG C of finish rolling finishing temperature；
Cooling technique parameter is：Rolled piece is cooled to 700 DEG C of section phase transformations with 110 DEG C/s cooling velocities, then rises again to 780 DEG C, last H profile steel naturally cools to room temperature.
Embodiment 2
A kind of big cross section H profile steel, the weight/mass percentage composition of the chemical composition of its material include：
Carbon 0.08%, silicon 0.15%, manganese 1.25%, vanadium 0.15%, nitrogen 0.010%, phosphorus 0.006%, sulphur 0.06%, niobium 0.03%th, thallium 0.03%, polonium 0.03%, terbium 0.02%, nickel 0.01%, Als 0.015%, surplus are iron and impurity element, remaining Measure as iron and impurity element.
A kind of production technology of big cross section H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down start rolling temperature 1000 DEG C, 960 DEG C of finish rolling start rolling temperature, 860 DEG C of finish rolling finishing temperature；
Cooling technique parameter is：Rolled piece is cooled to 700 DEG C of section phase transformations with 110 DEG C/s cooling velocities, then rises again to 780 DEG C, last H profile steel naturally cools to room temperature.
Embodiment 3
A kind of big cross section H profile steel, the weight/mass percentage composition of the chemical composition of its material include：
Carbon 0.08%, silicon 0.15%, manganese 1.25%, vanadium 0.20%, nitrogen 0.012%, phosphorus 0.006%, sulphur 0.06%, niobium 0.03%th, thallium 0.03%, polonium 0.03%, terbium 0.02%, nickel 0.01%, Als 0.015%, surplus are iron and impurity element, remaining Measure as iron and impurity element.
A kind of production technology of big cross section H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down start rolling temperature 1000 DEG C, 960 DEG C of finish rolling start rolling temperature, 860 DEG C of finish rolling finishing temperature；
Cooling technique parameter is：Rolled piece is cooled to 700 DEG C of section phase transformations with 110 DEG C/s cooling velocities, then rises again to 780 DEG C, last H profile steel naturally cools to room temperature.
The embodiments of the present invention described above are not intended to limit the scope of the present invention, any in the present invention Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention Within enclosing.

Claims (3)

1. a kind of big cross section H profile steel, it is characterised in that the weight/mass percentage composition of the chemical composition of its material includes：
Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, vanadium 0.10~0.20%, nitrogen≤0.012%, Phosphorus≤0.01%, sulphur≤0.01%, niobium 0.03~0.05%, thallium 0.03~0.05%, polonium 0.03~0.05%, terbium 0.02~ 0.04%th, nickel 0.01~0.02%, surplus are iron and impurity element.
2. low temperature resistant toughness H profile steel according to claim 1, it is characterised in that also comprising weight/mass percentage composition：Als≥ 0.015%.
A kind of 3. production technology of big cross section H profile steel as claimed in claim 1 or 2, it is characterised in that：
Rolling technological parameter is：1200 DEG C of heating-up temperature, 1000 DEG C of breaking down start rolling temperature, 960 DEG C of finish rolling start rolling temperature, finish rolling are whole Roll 860 DEG C of temperature；
Cooling technique parameter is：Rolled piece is cooled to 700 DEG C of section phase transformations with 110 DEG C/s cooling velocities, then rises again to 780 DEG C, most H profile steel naturally cools to room temperature afterwards.
CN201711162434.1A 2017-11-21 2017-11-21 A kind of big cross section H profile steel and its production technology Pending CN107829031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711162434.1A CN107829031A (en) 2017-11-21 2017-11-21 A kind of big cross section H profile steel and its production technology

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Application Number Priority Date Filing Date Title
CN201711162434.1A CN107829031A (en) 2017-11-21 2017-11-21 A kind of big cross section H profile steel and its production technology

Publications (1)

Publication Number Publication Date
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644032A (en) * 2012-04-17 2012-08-22 马钢(集团)控股有限公司 Cooling after rolling method for high-weather fastness hot-rolled H-steel with yield strength up to 550MPa
CN102943203A (en) * 2012-09-03 2013-02-27 莱芜钢铁集团有限公司 Hot-rolled H-section steel having yield strength in 700MPa level and preparation method thereof
CN103276310A (en) * 2013-05-31 2013-09-04 内蒙古包钢钢联股份有限公司 Rare-earth-containing H-shaped steel with low-temperature toughness and production method thereof
CN103589951A (en) * 2013-11-01 2014-02-19 内蒙古包钢钢联股份有限公司 Large section H shaped steel and its production method
CN104018074A (en) * 2014-06-19 2014-09-03 马钢(集团)控股有限公司 Low-temperature-resistant H-shaped steel and production process thereof
CN104018073A (en) * 2014-06-19 2014-09-03 马钢(集团)控股有限公司 Low-temperature toughness resistant H-shaped steel and production process thereof
CN104053806A (en) * 2012-01-26 2014-09-17 杰富意钢铁株式会社 High-strength hot-rolled steel sheet and method for producing same
CN107747043A (en) * 2017-11-13 2018-03-02 山东钢铁股份有限公司 A kind of yield strength 650MPa and above rank is weather-resistance hot rolled H-shaped and its manufacture method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104053806A (en) * 2012-01-26 2014-09-17 杰富意钢铁株式会社 High-strength hot-rolled steel sheet and method for producing same
CN102644032A (en) * 2012-04-17 2012-08-22 马钢(集团)控股有限公司 Cooling after rolling method for high-weather fastness hot-rolled H-steel with yield strength up to 550MPa
CN102943203A (en) * 2012-09-03 2013-02-27 莱芜钢铁集团有限公司 Hot-rolled H-section steel having yield strength in 700MPa level and preparation method thereof
CN103276310A (en) * 2013-05-31 2013-09-04 内蒙古包钢钢联股份有限公司 Rare-earth-containing H-shaped steel with low-temperature toughness and production method thereof
CN103589951A (en) * 2013-11-01 2014-02-19 内蒙古包钢钢联股份有限公司 Large section H shaped steel and its production method
CN104018074A (en) * 2014-06-19 2014-09-03 马钢(集团)控股有限公司 Low-temperature-resistant H-shaped steel and production process thereof
CN104018073A (en) * 2014-06-19 2014-09-03 马钢(集团)控股有限公司 Low-temperature toughness resistant H-shaped steel and production process thereof
CN107747043A (en) * 2017-11-13 2018-03-02 山东钢铁股份有限公司 A kind of yield strength 650MPa and above rank is weather-resistance hot rolled H-shaped and its manufacture method

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Application publication date: 20180323