CN107868910A - A kind of low temperature resistant toughness H profile steel and its production technology - Google Patents
A kind of low temperature resistant toughness H profile steel and its production technology Download PDFInfo
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- CN107868910A CN107868910A CN201711162484.XA CN201711162484A CN107868910A CN 107868910 A CN107868910 A CN 107868910A CN 201711162484 A CN201711162484 A CN 201711162484A CN 107868910 A CN107868910 A CN 107868910A
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- Prior art keywords
- profile steel
- temperature
- low temperature
- temperature resistant
- low
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of low temperature resistant toughness H profile steel and its production technology, its chemical composition weight/mass percentage composition is：Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, 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.Present invention process can enable H profile steel under 40 DEG C and temperature below extremely frigid zones and low temperature environment, have an extremely low ductile-brittle transition temperature, good low-temperature impact resistance, and 40 DEG C of low-temperature flexibility improves the quality of product more than 250J.
Description
Technical field
The present invention relates to H profile steel production technical field, specifically a kind of low temperature resistant toughness H profile steel and its production technology.
Background technology
Its ductile-brittle transition temperature of current H profile steel uses H types at -10 DEG C or so such as in extremely frigid zones and low temperature environment
Steel, then when bearing dynamic load or impact, easily there is brittle failure, cause unnecessary loss.
Particularly at -40 DEG C and following environment H profile steel, the toughness of its H profile steel is relatively low, and low-temperature impact resistance is poor, it is impossible to
Meet requirement
The content of the invention
The invention provides a kind of low temperature resistant toughness H profile steel and its production technology, to solve above-mentioned technical problem.
A kind of low temperature resistant toughness H profile steel, its chemical composition weight/mass percentage composition are：
Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, 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
For iron and impurity element.
Preferably, also comprising weight/mass percentage composition：Als >=0.015%.
A kind of production technology of low temperature resistant toughness H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down open rolling
1000 DEG C of temperature, 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 beneficial effects of the invention are as follows：Present invention process H profile steel can be enable in -40 DEG C and temperature below extremely frigid zones and
Under low temperature environment, there is extremely low ductile-brittle transition temperature, good low-temperature impact resistance, -40 DEG C of low-temperature flexibility more than 250J,
Improve the quality of product.
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 low temperature resistant toughness H profile steel, its chemical composition weight/mass percentage composition are：
Carbon 0.08%, silicon 0.15%, manganese 1.25%, phosphorus 0.006%, sulphur 0.06%, niobium 0.03%, thallium 0.03%, polonium
0.03%th, terbium 0.02%, nickel 0.01%, Als 0.015%, surplus are iron and impurity element, and surplus is iron and impurity element.
A kind of production technology of low temperature resistant toughness H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down open rolling
1000 DEG C of temperature, 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 low temperature resistant toughness H profile steel, its chemical composition weight/mass percentage composition are：
Carbon 0.10%, silicon 0.25%, manganese 1.40%, phosphorus 0.008%, sulphur 0.008%, niobium 0.04%, thallium 0.04%, polonium
0.04%th, terbium 0.03%, nickel 0.015%, Als 0.022%, surplus are iron and impurity element.
A kind of production technology of low temperature resistant toughness H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down open rolling
1000 DEG C of temperature, 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 low temperature resistant toughness H profile steel, its chemical composition weight/mass percentage composition are：
Carbon 0.13%, silicon 0.35%, manganese 1.45%, phosphorus 0.01%, sulphur 0.01%, niobium 0.05%, thallium 0.05%, polonium
0.05%th, terbium 0.04%, nickel 0.02%, Als 0.030%, surplus are iron and impurity element.
A kind of production technology of low temperature resistant toughness H profile steel, rolling technological parameter are：1200 DEG C of heating-up temperature, breaking down open rolling
1000 DEG C of temperature, 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 low temperature resistant toughness H profile steel, it is characterised in that its chemical composition weight/mass percentage composition is：
Carbon 0.08~0.13%, silicon 0.15~0.35%, manganese 1.25~1.45%, 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.
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 low temperature resistant toughness 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162484.XA CN107868910A (en) | 2017-11-21 | 2017-11-21 | A kind of low temperature resistant toughness H profile steel and its production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162484.XA CN107868910A (en) | 2017-11-21 | 2017-11-21 | A kind of low temperature resistant toughness H profile steel and its production technology |
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| Publication Number | Publication Date |
|---|---|
| CN107868910A true CN107868910A (en) | 2018-04-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN104862588A (en) * | 2015-06-03 | 2015-08-26 | 马钢(集团)控股有限公司 | Hot-rolled H-shaped profile steel and production method thereof |
-
2017
- 2017-11-21 CN CN201711162484.XA patent/CN107868910A/en active Pending
Patent Citations (4)
| 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 |
| 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 |
| 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 |
| CN104862588A (en) * | 2015-06-03 | 2015-08-26 | 马钢(集团)控股有限公司 | Hot-rolled H-shaped profile steel and production method thereof |
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Application publication date: 20180403 |