CN109536851A - A kind of cold rolling quenching partition steel plate and preparation method thereof - Google Patents
A kind of cold rolling quenching partition steel plate and preparation method thereof Download PDFInfo
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- CN109536851A CN109536851A CN201910066630.1A CN201910066630A CN109536851A CN 109536851 A CN109536851 A CN 109536851A CN 201910066630 A CN201910066630 A CN 201910066630A CN 109536851 A CN109536851 A CN 109536851A
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- 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
- C21D1/26—Methods of annealing
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The invention belongs to steel product production technical fields, more particularly to cold rolling quenching partition steel plate, content by weight percentage, the chemical component for controlling steel plate is C:0.10-0.30%, Si:0.50-2.00%, Mn:1.20-2.60%, Nb:0.02-0.08%, Ti:0.02-0.08%, P≤0.05%, S≤0.01%, Al≤0.10%, and surplus is Fe and inevitable field trash.The preparation method for matching steel splitting plate is additionally provided simultaneously, and process flow is as follows, and → pickling → cold rolling → continuous annealing → smooth → function inspection → packaging factory is batched in molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling →.Match division technique by the way that each chemical component of steel plate is rationally arranged, and by the special sudden strain of a muscle of overaging section after quenching, so that the retained austenite richness carbon of quenching partition steel plate, retained austenite stabilization is greatly improved, and is obtained compared with the strong quenching partition steel plate of the superelevation of high-ductility.
Description
Technical field
The invention belongs to steel product production technical fields, and in particular to cold rolling quenching partition steel plate, while additionally providing this
Preparation method with steel splitting plate.
Background technique
With the rapid development of automobile industry, the recyclable class for becoming social growing interest of safety, energy-saving and environmental protection and resource
Topic.Safety index is improved by enhancing automobile component intensity and performance, reduces oil consumption, energy saving and resource by mitigating car weight
And it is conducive to the common recognition that environmental protection has become industry.The process of automobile steel development is always constantly to pursue performance, cost and resource
The process of optimization.In the past 40 years, the alloy content of automobile steel develops to after it experienced the first generation and second generation variation
With medium managese steel, quenching partition (Quenching&partioning, QP) steel be representative the third generation, its main feature is that more focus on from
Sustainable, the minimizing manufacture direction of resource, environment, cost, recyclable and green manufacturing etc. are developed, i.e., low-alloy content at
Point simplify, high-strength tenacity it is structure lightened, more focus on by fine technology controlling and process and tissue modulation acquisition height it is tough
Performance.In recent years, it does a lot of work both at home and abroad to the process mechanism of QP steel, structure property, but fine in QP structure of steel performance
Stability contorting, optimizing components design, still have many problems in industrial production control.The production of some QP steel need to increase equipment or
Person's retrofitted unit condition produces to realize, undoubtedly will affect or limits the production of other automobile steels, also will increase cost.
Summary of the invention
This programme designs a kind of third generation automobile steel cold rolling quenching partition (QP) steel, passes through optimized alloy ingredient and Re Chu
Science and engineering skill obtains the mechanical property of 1000MPa intensity rank QP steel.Using different quenching research QP structure of steel to performance
The influence of influence and the partitions condition research QP structure of steel such as partition temperature and partition time to performance, by constantly studying, most
It realizes eventually and does not increase extras equipment in heat-treatment production line, the quenching and partition of QP steel are realized in common continuous annealing furnace
Technique has achieved the purpose that its tissue of stability contorting, and mechanical property is preferable, solve alloy content is low, properties of product not
Stablize, many technical problems such as industrial production difficulty is big.
A kind of cold rolling quenching partition steel plate, by weight percentage content are specifically provided, the chemical component for controlling steel plate is
C:0.10-0.30%, Si:0.50-2.00%, Mn:1.20-2.60%, Nb:0.02-0.08%, Ti:0.02-0.08%, P≤
0.05%, S≤0.01%, Al≤0.10%, surplus are Fe and inevitable field trash.
Further, content by weight percentage, the chemical component for controlling steel plate is C:0.22%, Si:1.28%, Mn:
1.79%, Nb:0.025%, Ti:0.027%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus are Fe and can not keep away
The field trash exempted from.
Further, content by weight percentage, the chemical component for controlling steel plate is C:0.23%, Si:1.26%, Mn:
1.81%, Nb:0.023%, Ti:0.026%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus are Fe and can not keep away
The field trash exempted from.
Further, content by weight percentage, the chemical component for controlling steel plate is C:0.22%, Si:1.29%, Mn:
1.83%, Nb:0.026%, Ti:0.024%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus are Fe and can not keep away
The field trash exempted from.
A kind of preparation method of cold rolling quenching partition steel plate is additionally provided simultaneously, process flow is as follows, molten iron pretreatment →
Converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold rolling → continuous annealing → smooth →
Function inspection → packaging factory；Wherein, hot rolling slab heating temperature is 1250-1330 DEG C, and start rolling temperature is 1130-1170 DEG C,
Finishing temperature is 910-970 DEG C, and section cooling is used after rolling, and cooling rate is 20-35 DEG C/s, and coiling temperature is 530-590 DEG C.
Further, continuous annealing process parameter is as shown in the table:
It is an advantage of the current invention that by the way that each chemical component of steel plate is rationally arranged, and it is special by overaging section after quenching
Sudden strain of a muscle match division technique, do not need additional quenching apparatus, only can be carried out producing in common continuous annealing unit.So that quenching is matched
The retained austenite richness carbon of steel splitting plate, retained austenite stabilization are greatly improved, are obtained compared with the strong quenching partition steel of the superelevation of high-ductility
Plate, production control is relatively easy, and technological parameter is easily achieved, and surface quality is good, better conforms to product related request.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
A kind of cold rolling quenching partition steel plate, by weight percentage content, control the chemical component of steel plate are as follows: C:0.22%,
Si:1.28%, Mn:1.79%, Nb:0.025%, Ti:0.027%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus
For Fe and inevitable field trash.
The preparation method of the cold rolling quenching partition steel plate is additionally provided simultaneously, using following process flow:
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold
Roll → continuous annealing → smooth → function inspection → packaging factory；
Wherein, hot rolling slab heating temperature is 1250~1330 DEG C, and start rolling temperature is 1130~1170 DEG C, and finishing temperature is
910~970 DEG C, section cooling is used after rolling, cooling rate is 20~35 DEG C/s, and coiling temperature is 530~590 DEG C.Cold rolling is adopted
With 52% reduction ratio, continuous annealing process parameter is as shown in the table:
The mechanical property situation of final products is as shown in the table:
Embodiment 2
A kind of cold rolling quenching partition steel plate, by weight percentage content, control steel plate chemical component be C:0.23%,
Si:1.26%, Mn:1.81%, Nb:0.023%, Ti:0.026%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus
For Fe and inevitable field trash.
The preparation method of the cold rolling quenching partition steel plate is additionally provided simultaneously, using following process flow:
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold
Roll → continuous annealing → smooth → function inspection → packaging factory；
Wherein, hot rolling slab heating temperature is 1250~1330 DEG C, and start rolling temperature is 1130~1170 DEG C, and finishing temperature is
910~970 DEG C, section cooling is used after rolling, cooling rate is 20~35 DEG C/s, and coiling temperature is 530~590 DEG C.Cold rolling is adopted
With 55% reduction ratio, continuous annealing process parameter is as shown in the table:
The mechanical property situation of final products is as shown in the table:
Embodiment 3:
A kind of cold rolling quenching partition steel plate, by weight percentage content, control steel plate chemical component be C:0.22%,
Si:1.29%, Mn:1.83%, Nb:0.026%, Ti:0.024%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus
For Fe and inevitable field trash.
The preparation method of the cold rolling quenching partition steel plate is additionally provided simultaneously, using following process flow:
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold
Roll → continuous annealing → smooth → function inspection → packaging factory；
Wherein, hot rolling slab heating temperature is 1250~1330 DEG C, and start rolling temperature is 1130~1170 DEG C, and finishing temperature is
910~970 DEG C, section cooling is used after rolling, cooling rate is 20~35 DEG C/s, and coiling temperature is 530~590 DEG C.Cold rolling is adopted
With 53% reduction ratio, continuous annealing process parameter is as shown in the table:
The mechanical property situation of final products is as shown in the table,
Embodiment 4:
A kind of cold rolling quenching partition steel plate, by weight percentage content, the chemical component for controlling steel plate is C:0.1%, Si:
2.00%, Mn:1.2%, Nb:0.08%, Ti:0.02%, P≤0.05%, S≤0.01%, Al≤0.10%, surplus be Fe and
Inevitable field trash.
The preparation method of the cold rolling quenching partition steel plate is additionally provided simultaneously, using following process flow:
Molten iron pretreatment → converter smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling → batches → and pickling → cold
Roll → continuous annealing → smooth → function inspection → packaging factory；
Wherein, hot rolling slab heating temperature is 1250~1330 DEG C, and start rolling temperature is 1130~1170 DEG C, and finishing temperature is
910~970 DEG C, section cooling is used after rolling, cooling rate is 20~35 DEG C/s, and coiling temperature is 530~590 DEG C.Cold rolling is adopted
With 53% reduction ratio, continuous annealing process parameter is as shown in the table:
The mechanical property situation of final products is as shown in the table,
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of cold rolling quenching partition steel plate, which is characterized in that content by weight percentage, the chemical component for controlling steel plate is C:
0.10-0.30%, Si:0.50-2.00%, Mn:1.20-2.60%, Nb:0.02-0.08%, Ti:0.02-0.08%, P≤
0.05%, S≤0.01%, Al≤0.10%, surplus are Fe and inevitable field trash.
2. a kind of cold rolling quenching partition steel plate as described in claim 1, which is characterized in that content by weight percentage, control
The chemical component of steel plate be C:0.22%, Si:1.28%, Mn:1.79%, Nb:0.025%, Ti:0.027%, P≤0.05%,
S≤0.01%, Al≤0.10%, surplus are Fe and inevitable field trash.
3. a kind of cold rolling quenching partition steel plate as described in claim 1, which is characterized in that content by weight percentage, control
The chemical component of steel plate be C:0.23%, Si:1.26%, Mn:1.81%, Nb:0.023%, Ti:0.026%, P≤0.05%,
S≤0.01%, Al≤0.10%, surplus are Fe and inevitable field trash.
4. a kind of cold rolling quenching partition steel plate as described in claim 1, which is characterized in that content by weight percentage, control
The chemical component of steel plate be C:0.22%, Si:1.29%, Mn:1.83%, Nb:0.026%, Ti:0.024%, P≤0.05%,
S≤0.01%, Al≤0.10%, surplus are Fe and inevitable field trash.
5. a kind of preparation method of cold rolling quenching partition steel plate, it is characterised in that: process flow is as follows, molten iron pretreatment → converter
→ pickling → cold rolling → continuous annealing → smooth → function is batched in smelting → external refining → continuous casting → heating → controlled rolling and controlled cooling →
Inspection → packaging factory；Wherein, hot rolling slab heating temperature is 1250-1330 DEG C, and start rolling temperature is 1130-1170 DEG C, finish to gauge
Temperature is 910-970 DEG C, and section cooling is used after rolling, and cooling rate is 20-35 DEG C/s, and coiling temperature is 530-590 DEG C.
6. a kind of preparation method of cold rolling quenching partition steel plate as claimed in claim 5, it is characterised in that: continuous annealing process
Parameter is as shown in the table:
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394658A (en) * | 2020-04-22 | 2020-07-10 | 马鞍山钢铁股份有限公司 | 980 MPa-grade cold-rolled Q & P steel suitable for conventional continuous annealing production line and manufacturing method thereof |
| CN111411299A (en) * | 2020-04-17 | 2020-07-14 | 邯郸钢铁集团有限责任公司 | 1000 MPa-grade cold-rolled high-elongation Q & P steel plate and preparation method thereof |
| CN111455282B (en) * | 2020-05-11 | 2021-03-16 | 武汉钢铁有限公司 | Quenching distribution steel with tensile strength more than or equal to 1500MPa produced by adopting short process and method |
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| CN106164313A (en) * | 2014-03-31 | 2016-11-23 | 杰富意钢铁株式会社 | High yield ratio and high-strength cold-rolled steel sheet and manufacture method thereof |
| CN106244924A (en) * | 2016-08-31 | 2016-12-21 | 东北大学 | A kind of cold rolling quenching ductile steel and preparation method |
| CN107429349A (en) * | 2015-03-25 | 2017-12-01 | 杰富意钢铁株式会社 | Cold-rolled steel sheet and its manufacture method |
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- 2019-01-24 CN CN201910066630.1A patent/CN109536851A/en active Pending
Patent Citations (4)
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| CN106164313A (en) * | 2014-03-31 | 2016-11-23 | 杰富意钢铁株式会社 | High yield ratio and high-strength cold-rolled steel sheet and manufacture method thereof |
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| CN105420605A (en) * | 2015-11-30 | 2016-03-23 | 钢铁研究总院 | Ultralow-yield-ratio cold-rolled dual-phase steel and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111411299A (en) * | 2020-04-17 | 2020-07-14 | 邯郸钢铁集团有限责任公司 | 1000 MPa-grade cold-rolled high-elongation Q & P steel plate and preparation method thereof |
| CN111394658A (en) * | 2020-04-22 | 2020-07-10 | 马鞍山钢铁股份有限公司 | 980 MPa-grade cold-rolled Q & P steel suitable for conventional continuous annealing production line and manufacturing method thereof |
| CN111455282B (en) * | 2020-05-11 | 2021-03-16 | 武汉钢铁有限公司 | Quenching distribution steel with tensile strength more than or equal to 1500MPa produced by adopting short process and method |
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Application publication date: 20190329 |