CN101376942A - Preparation of manganese series water quenching bainite steel - Google Patents
Preparation of manganese series water quenching bainite steel Download PDFInfo
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- CN101376942A CN101376942A CNA200810223422XA CN200810223422A CN101376942A CN 101376942 A CN101376942 A CN 101376942A CN A200810223422X A CNA200810223422X A CN A200810223422XA CN 200810223422 A CN200810223422 A CN 200810223422A CN 101376942 A CN101376942 A CN 101376942A
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- water quenching
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 33
- 239000010959 steel Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000010791 quenching Methods 0.000 title claims abstract description 13
- 230000000171 quenching effect Effects 0.000 title claims abstract description 11
- 150000002696 manganese Chemical class 0.000 title claims abstract description 10
- 229910001563 bainite Inorganic materials 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000011572 manganese Substances 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims abstract 2
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000009749 continuous casting Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 7
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 238000005275 alloying Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 238000010583 slow cooling Methods 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a preparation method of manganese series water quenching bainitic steel, which belongs to the technical field of alloy steel preparation. First, the steel is smelted by a conventional steel smelting process, teemed or continuously cast and produced; the weight percentage of all components in the steel is as follows: C: 0.05 percent to 0.42 percent, Mn: 1.80 percent to 3.00 percent, Si: 0.20 percent to 1.80 percent, Cr: 0 percent to 1.60 percent, and the rest is Fe; after forge rolling, the steel is directly cooled by water or oil; and then, the steel is heated to 200 DEG C to 650 DEG C, and tempered after the temperature is preserved for 1h to 3h. In the preparation method, the alloying of an appropriate amount of Mn, Si, Cr and other elements changes the continuous cooling conversion curve of the steel grade, improves the hardenability characteristic of the steel and obtains components with good obdurability. The product produced by the preparation method has excellent performance, simple process and low cost.
Description
Technical field
The present invention relates to a kind of preparation method of manganese series water quenching bainite steel, belong to steel alloy manufacturing technology field.
Background technology
For the production of high strength alloy steel, usually adopt and add than approach such as heat-treating after multielement or noble element, the hot-work, cooperate with the better strength and toughness that obtains the steel alloy product.Owing in steel alloy, add more amount element or noble element, or, be unfavorable for a large amount of uses because comparatively complicated production technique makes the production cost of high strength alloy steel higher.When making water (oil) quench treatment in the production of large-scale steel spare, because the hardening capacity of steel is lower, cause member bulk strength deficiency under the certain situation, these all are the technical bottlenecks that often runs in the production of large high-strength steel alloy member.
Summary of the invention
The objective of the invention is to propose a kind of preparation method of manganese series water quenching bainite steel, change existing bainitic steel production technique, improving performance and to reduce production costs, and make the intensity of large-scale bainitic steel product reach service requirements.
The preparation method of a kind of manganese series water quenching bainite steel that the present invention proposes comprises following each step:
(1) smelt with conventional process for making after, through annotating ingot or continuous casting production, in the steel weight percent of each composition can for:
C： 0.05—0.42％
Mn： 1.80—3.00％
Si： 0.20—1.80％
Cr： 0—1.60％
Ti： 0—0.12％
V： 0—0.12％
Nb： 0—0.12％
N 0—0.02％
B： 0—0.01％
Surplus is Fe;
(2) above-mentioned steel are forged and pressed or be rolled into product at 1100 ℃-1250 ℃, water-cooled or oil cooling are to room temperature-300 ℃;
(3) the said products is heated to 200-650 ℃, is incubated 1-3 hours and carries out temper.
The preparation method of a kind of manganese series water quenching bainite steel that the present invention proposes, by suitable allotment to alloying elements such as Mn, Si, Cr, changed the austenite Continuous Cooling Transformation Curve (CCT curve) of invention steel grade, thereby can obtain the shellfish/horse heterogeneous structure in the big cooling rate scope, the adding of alloying element has simultaneously improved the hardening capacity of steel to a great extent, and this all is to obtain good shellfish/horse heterogeneous structure by cheap water (or oil) condition is provided.Adopt water (oil) technology of quenching for producing large-scale steel spare, can obtain the good member of combination of strength and toughness.Manganese of the present invention is water (oil) bainitic steel of quenching, and is applicable to different purposes respectively with existing manganese series air-cooled bainitic steels, complements one another.The more important thing is simultaneously, compare that manganese is that the quench cost of alloy of bainitic steel of water (oil) is cheap, and entire production process need not complicated procedures of forming, reduced production cost significantly with other steel grades with intensity rank.
Embodiment
The preparation method of the manganese series water quenching bainite steel that the present invention proposes, after at first smelting with conventional process for making, through annotating ingot or continuous casting production, the weight percent of each composition is in the steel:
C： 0.05—0.42％
Mn： 1.80—3.00％
Si： 0.20—1.80％
Cr： 0—1.60％
Ti： 0—0.12％
V： 0—0.12％
Nb： 0—0.12％
N 0—0.02％
B： 0—0.01％
Surplus is Fe;
Then above-mentioned steel are forged and pressed or be rolled into product at 1100 ℃-1250 ℃, water-cooled or oil cooling are to room temperature-300 ℃; The said products is heated to 200-650 ℃, is incubated 1-3 hours and carries out temper.
Embodiments of the invention see the following form:
The preparation method of embodiment 1 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 300 bars after, oil cooling to 200 ℃, slow cooling is to room temperature.
(3) bar is heated to 250 ℃, is incubated 2 hours, carry out temper.
The preparation method of embodiment 2 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 300 bars after, oil cooling to 200 ℃, slow cooling is to room temperature.
(3) bar is heated to 200 ℃, is incubated 2 hours, carry out temper.
The preparation method of embodiment 3 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 200 bars after, oil cooling to 200 ℃, slow cooling is to room temperature.
(3) bar is heated to 250 ℃, is incubated 1.5 hours, carry out temper.
The preparation method of embodiment 4 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 400 bars after, water-cooled to 250 ℃, slow cooling is to room temperature.
(3) bar is heated to 600 ℃, is incubated 3 hours, carry out temper.
The preparation method of embodiment 5 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 300 bars after, water-cooled to 250 ℃, slow cooling is to room temperature.
(3) bar is heated to 200 ℃, is incubated 2 hours, carry out temper.
The preparation method of embodiment 6 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 200 bars after, water-cooled is to room temperature.
(3) bar is heated to 250 ℃, is incubated 2 hours, carry out temper.。
The preparation method of embodiment 7 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 200 bars after, water-cooled is to room temperature.
(3) bar is heated to 250 ℃, is incubated 1.5 hours, carry out temper.
The preparation method of embodiment 8 is as follows:
(1) carries out conventional process for making continuous casting with converter or electric furnace and produce material base.
(2) material base is cooled to 1200 ℃, be rolled into Φ 200 bars after, water-cooled is to room temperature.
(3) bar is heated to 250 ℃, is incubated 1.5 hours, carry out temper.
Claims (1)
1. the preparation method of a manganese series water quenching bainite steel is characterized in that this method comprises following each step:
(1) with after the conventional process for making smelting, through annotating ingot or continuous casting production, the weight percent of each composition is in the steel:
C： 0.05—0.42％
Mn： 1.80—3.00％
Si： 0.20—1.80％
Cr： 0—1.60％
Ti： 0—0.12％
V： 0—0.12％
Nb： 0—0.12％
N 0—0.02％
B： 0—0.01％
Surplus is Fe;
(2) with above-mentioned steel at 1100 ℃-1250 ℃ forging and pressing or the rolling product that is processed into, water-cooled or oil cooling are to room temperature-300 ℃;
(3) the said products is heated to 200-650 ℃, is incubated 1-3 hours and carries out temper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810223422XA CN101376942A (en) | 2008-09-27 | 2008-09-27 | Preparation of manganese series water quenching bainite steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810223422XA CN101376942A (en) | 2008-09-27 | 2008-09-27 | Preparation of manganese series water quenching bainite steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101376942A true CN101376942A (en) | 2009-03-04 |
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| CNA200810223422XA Pending CN101376942A (en) | 2008-09-27 | 2008-09-27 | Preparation of manganese series water quenching bainite steel |
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| CN (1) | CN101376942A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892426A (en) * | 2010-06-21 | 2010-11-24 | 余忠友 | Medium and high-carbon Bainite steel and preparation method thereof |
| CN103429766A (en) * | 2011-05-30 | 2013-12-04 | 塔塔钢铁有限公司 | Bainitic steel of high strength and high elongation and method to manufacture said bainitic steel |
| CN104388830A (en) * | 2014-12-16 | 2015-03-04 | 常熟市东方特种金属材料厂 | High-strength iron-carbon alloy material |
-
2008
- 2008-09-27 CN CNA200810223422XA patent/CN101376942A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892426A (en) * | 2010-06-21 | 2010-11-24 | 余忠友 | Medium and high-carbon Bainite steel and preparation method thereof |
| CN101892426B (en) * | 2010-06-21 | 2013-05-01 | 江油贝得力金属新材料有限公司 | Medium and high-carbon Bainite steel and preparation method thereof |
| CN103429766A (en) * | 2011-05-30 | 2013-12-04 | 塔塔钢铁有限公司 | Bainitic steel of high strength and high elongation and method to manufacture said bainitic steel |
| CN103429766B (en) * | 2011-05-30 | 2015-08-05 | 塔塔钢铁有限公司 | There is the bainitic steel of high strength and high-elongation and manufacture the method for described bainitic steel |
| CN104388830A (en) * | 2014-12-16 | 2015-03-04 | 常熟市东方特种金属材料厂 | High-strength iron-carbon alloy material |
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Open date: 20090304 |