CN105779873A - High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof - Google Patents
High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof Download PDFInfo
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- CN105779873A CN105779873A CN201610311747.8A CN201610311747A CN105779873A CN 105779873 A CN105779873 A CN 105779873A CN 201610311747 A CN201610311747 A CN 201610311747A CN 105779873 A CN105779873 A CN 105779873A
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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
- 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
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/06—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
- 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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- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a high-titanium low-cost S500MC hot-rolled pickled plate, and mainly solves the problem that S500MC hot-rolled pickled plates produced according to the prior art are excessively high in production cost, poor in surface quality and the like. The high-titanium low-cost S500MC hot-rolled pickled plate comprises, by weight percentage, 0.04%-0.10% of C, smaller than or equal to 0.35% of Si, 0.90%-1.30% of Mn, smaller than or equal to 0.020% of P, smaller than or equal to 0.015% of S, 0.015%-0.040% of Alt, 0.050%-0.080% of Ti, 0.010%-0.030% of Nb, smaller than or equal to 0.006% of N and the balance iron and inevitable impurities. The invention further provides a production method of the high-titanium low-cost S500MC hot-rolled pickled plate. The production method comprises the following steps that a hot-rolled pickled plate continuous casting blank is produced according to the components and the weight percentages, heating and heat preservation are conducted, scale removal is conducted through high-pressure water, rough rolling is conducted, finish rolling is conducted, reeling operation is conducted after laminar cooling is finished, and finally the S500MC hot-rolled pickled plate meeting the requirements of the trade mark S500MC in the EN10149-2:1995 is obtained. According to the high-titanium low-cost S500MC hot-rolled pickled plate and the production method, the purposes that the production cost is substantially reduced, the quantity of banded structures and the quantity of manganese sulfide inclusion are effectively reduced, the crack sensitivity of the corners of the casting blank is reduced, and the defects such as surface warping are effectively overcome are achieved.
Description
Technical field
The present invention relates to a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate and production method thereof, belong to hot rolling acid-cleaning plate manufacturing technology field.
Background technology
S500MC hot rolling acid-cleaning plate belongs to low-alloy high-strength steel, is also cold formability high yield stress steel simultaneously, and at home and abroad the field such as vehicle, machinery, building is extensively applied.Steel mill has been used up carbon/manganese-niobium-titanium set member design the most both at home and abroad, and high cost is the major defect of this composition design, causes the market competitiveness poor.Simultaneously because the impact of composition design, cause crack tendence in continuous casting production process big, easily in strand corner, angle transverse discontinuity occurs, have a strong impact on the surface quality etc. of S500MC hot rolling acid-cleaning plate.Based on above reason, it is badly in need of a kind of new technology and solves problem above, produce low cost, high-quality product.
Along with theoretical the most perfect of titaniferous Second Phase Precipitation in the reaching its maturity of smelting technique and Controlled Rolling And Controlled Cooling, titanium micro-alloyed steel, and the economy of current ferrotianium, the advantage in price compared with ferro-niobium, vanadium iron, use titanium microalloying to have lower cost.The effect of titanium is mainly reflected in following aspects: titanium can be combined with nitrogen, carbon, forms stable nitride, carbide, stops Austenite Grain Growth, thus improves the welding performance of material；Sulfide in titanium energy modified steel, improves difference and the cold forming capability of the vertically and horizontally performance of material；During Ti content height (＞ 0.04%), in conjunction with suitable heat processing technique, the titanium carbide that disperse is tiny can be formed, play precipitation strength effect；Titanium has certain refined crystalline strengthening effect simultaneously.Therefore high titanium technological design is used can to realize producing low cost, high-quality product.
Due to the impact of composition design, cause crack tendence in continuous casting production process big, easily in strand corner, angle transverse discontinuity occurs, have a strong impact on the surface quality etc. of S500MC hot rolling acid-cleaning plate.
Summary of the invention
The technical problem to be solved is to provide a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate and production method thereof.The method main purpose is the problems such as the S500MC hot rolling acid-cleaning plate production cost improving prior art production is too high, surface quality difference.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, this hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.04%-0.10%, Si≤0.35%, Mn:0.90%-1.30%, P≤0.020%, S≤0.015%, Alt:0.015%-0.040%, Ti:0.050%-0.080%, Nb:0.010%-0.030%, N≤0.006%, surplus is ferrum and inevitable impurity.
The production method of a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, comprises the following steps:
(1) hot rolling acid-cleaning plate continuous casting billet is prepared according to above-mentioned each component and percentage by weight proportioning；
(2) continuous casting billet is placed in walking beam furnace heating, is incubated 40-80min at 1170-1270 DEG C, makes a large amount of solid solution of alloy；
(3), after laggard horizontal high voltage water de-scaling come out of the stove by continuous casting billet, roughing mill rolling, start rolling temperature 1080 DEG C-1150 DEG C are entered；Intermediate blank temperature >=950 DEG C after roughing,
(4) mm finishing mill unit rolling, finishing temperature 820 DEG C-880 DEG C are entered after roughing；
(5) batching after section cooling, coiling temperature is 560 DEG C-650 DEG C again.
(6) the final performance for preparing meets the S500MC hot rolling acid-cleaning plate of the requirement of trade mark S500MC in EN10149-2:1995.
Beneficial effects of the present invention:
S500MC hot rolling acid-cleaning plate of the present invention uses high titanium to substitute niobium and the method for part manganese, Ti content ＞ 0.04% substitutes niobium and part Fe content, according to current alloy calculation of price, the cost ton steel of S500MC hot rolling acid-cleaning plate can reduce about 130 yuan, realize being greatly lowered the purpose of production cost, the invigoration effect of titanium is given full play in S500MC hot rolling acid-cleaning plate.Avoiding niobium carbonitrides to generate, titanium nitrogen fixation reduces the generation of aluminium nitride, reduces the crack sensitivity in strand corner, effectively prevents sticking up the defects such as skin and produces.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, this hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.04%, Si:0.35%, Mn:0.90%, P:0.020%, S:0.015%, Alt:0.015%, Ti:0.050%, Nb:0.010%, N:0.006%, surplus is ferrum and inevitable impurity.
The production method of a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, comprises the following steps:
(1) hot rolling acid-cleaning plate continuous casting billet is prepared according to above-mentioned each component and percentage by weight proportioning；
(2) continuous casting billet is placed in walking beam furnace heating, is incubated 40min at 1170 DEG C, makes a large amount of solid solution of alloy；
(3), after laggard horizontal high voltage water de-scaling come out of the stove by continuous casting billet, roughing mill rolling, start rolling temperature 1080 DEG C are entered；Intermediate blank temperature >=950 DEG C after roughing,
(4) mm finishing mill unit rolling, finishing temperature 820 DEG C are entered after roughing；
(5) batching after section cooling, coiling temperature is 560 DEG C again.
(6) the final performance for preparing meets the S500MC hot rolling acid-cleaning plate of the requirement of trade mark S500MC in EN10149-2:1995.
Embodiment 2
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, this hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.10%, Si≤0.35%, Mn:1.30%, P≤0.020%, S≤0.015%, Alt:0.040%, Ti:0.080%, Nb:0.030%, N≤0.006%, surplus is ferrum and inevitable impurity.
The production method of a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, comprises the following steps:
(1) hot rolling acid-cleaning plate continuous casting billet is prepared according to above-mentioned each component and percentage by weight proportioning；
(2) continuous casting billet is placed in walking beam furnace heating, is incubated 80min at 1270 DEG C, makes a large amount of solid solution of alloy；
(3), after laggard horizontal high voltage water de-scaling come out of the stove by continuous casting billet, roughing mill rolling, start rolling temperature 1150 DEG C are entered；Intermediate blank temperature >=950 DEG C after roughing,
(4) mm finishing mill unit rolling, finishing temperature 880 DEG C are entered after roughing；
(5) batching after section cooling, coiling temperature is 650 DEG C again.
(6) the final performance for preparing meets the S500MC hot rolling acid-cleaning plate of the requirement of trade mark S500MC in EN10149-2:1995.
Embodiment 3
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, this hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.050%, Si≤0.35%, Mn:1.00%, P≤0.020%, S≤0.015%, Alt:0.030%, Ti:0.070%, Nb:0.020%, N≤0.006%, surplus is ferrum and inevitable impurity.
The production method of a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate, comprises the following steps:
(1) hot rolling acid-cleaning plate continuous casting billet is prepared according to above-mentioned each component and percentage by weight proportioning；
(2) continuous casting billet is placed in walking beam furnace heating, is incubated 50min at 1180 DEG C, makes a large amount of solid solution of alloy；
(3), after laggard horizontal high voltage water de-scaling come out of the stove by continuous casting billet, roughing mill rolling, start rolling temperature 1125 DEG C are entered；Intermediate blank temperature >=950 DEG C after roughing,
(4) mm finishing mill unit rolling, finishing temperature 850 DEG C are entered after roughing；
(5) batching after section cooling, coiling temperature is 570 DEG C again.
(6) the final performance for preparing meets the S500MC hot rolling acid-cleaning plate of the requirement of trade mark S500MC in EN10149-2:1995.
Claims (5)
1. one kind high titanium low cost S 500MC hot rolling acid-cleaning plate, it is characterised in that this hot rolling acid-cleaning plate by with
Lower component forms according to percentage by weight: C:0.04%-0.10%, Si≤0.35%, Mn:0.90%-1.30%,
P≤0.020%, S≤0.015%, Alt:0.015%-0.040%, Ti:0.050%-0.080%, Nb:
0.010%-0.030%, N≤0.006%, surplus is ferrum and inevitable impurity.
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate the most as claimed in claim 1, it is characterised in that
This hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.04%, Si:0.35%, Mn:0.90%,
P:0.020%, S:0.015%, Alt:0.015%, Ti:0.050%, Nb:0.010%, N:0.006%,
Surplus is ferrum and inevitable impurity.
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate the most as claimed in claim 1, it is characterised in that
This hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.10%, Si≤0.35%, Mn:1.30%,
P≤0.020%, S≤0.015%, Alt:0.040%, Ti:0.080%, Nb:0.030%, N≤0.006%,
Surplus is ferrum and inevitable impurity.
A kind of high titanium low cost S 500MC hot rolling acid-cleaning plate the most as claimed in claim 1, it is characterised in that
This hot rolling acid-cleaning plate is made up of according to percentage by weight following components: C:0.050%, Si≤0.35%, Mn:
1.00%, P≤0.020%, S≤0.015%, Alt:0.030%, Ti:0.070%, Nb:0.020%, N
≤ 0.006%, surplus is ferrum and inevitable impurity.
5. produce a kind of high titanium low cost S 500MC hot rolling acid-cleaning plate such as claim 1 or 2 or 3 or 4
Method, comprises the following steps:
(1) hot rolling acid-cleaning plate continuous casting billet is prepared according to above-mentioned each component and percentage by weight proportioning；
(2) continuous casting billet is placed in walking beam furnace heating, is incubated 40-80min at 1170-1270 DEG C,
Make a large amount of solid solution of alloy；
(3), after laggard horizontal high voltage water de-scaling come out of the stove by continuous casting billet, roughing mill rolling, start rolling temperature 1080 DEG C are entered
-1150℃；Intermediate blank temperature >=950 DEG C after roughing,
(4) mm finishing mill unit rolling, finishing temperature 820 DEG C-880 DEG C are entered after roughing；
(5) batching after section cooling, coiling temperature is 560 DEG C-650 DEG C again.
(6) the final performance for preparing meets the S500MC of the requirement of trade mark S500MC in EN10149-2:1995
Hot rolling acid-cleaning plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311747.8A CN105779873A (en) | 2016-05-12 | 2016-05-12 | High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof |
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| CN201610311747.8A CN105779873A (en) | 2016-05-12 | 2016-05-12 | High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755866A (en) * | 2016-11-21 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of method for reducing cold rolling low-alloy high-strength steel banded structure |
| CN107663611A (en) * | 2016-07-29 | 2018-02-06 | 本钢板材股份有限公司 | A kind of production method of inexpensive 490MPa levels hot rolling acid-cleaning plate |
| CN109772898A (en) * | 2019-01-09 | 2019-05-21 | 本钢板材股份有限公司 | Eliminate the method for hot-continuous-rolling strip steel edge upwarping defect and the strip of this method production |
| CN111663078A (en) * | 2020-06-09 | 2020-09-15 | 首钢集团有限公司 | Hot-rolled pickled plate and method for eliminating pit defect of hot-rolled pickled plate |
| CN112126851A (en) * | 2020-08-30 | 2020-12-25 | 五矿营口中板有限责任公司 | high-Ti-content micro-Al easy-welding low-alloy structural steel in ultra-fast cooling mode and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663611A (en) * | 2016-07-29 | 2018-02-06 | 本钢板材股份有限公司 | A kind of production method of inexpensive 490MPa levels hot rolling acid-cleaning plate |
| CN106755866A (en) * | 2016-11-21 | 2017-05-31 | 首钢京唐钢铁联合有限责任公司 | A kind of method for reducing cold rolling low-alloy high-strength steel banded structure |
| CN109772898A (en) * | 2019-01-09 | 2019-05-21 | 本钢板材股份有限公司 | Eliminate the method for hot-continuous-rolling strip steel edge upwarping defect and the strip of this method production |
| CN111663078A (en) * | 2020-06-09 | 2020-09-15 | 首钢集团有限公司 | Hot-rolled pickled plate and method for eliminating pit defect of hot-rolled pickled plate |
| CN111663078B (en) * | 2020-06-09 | 2021-09-21 | 首钢集团有限公司 | Hot-rolled pickled plate and method for eliminating pit defect of hot-rolled pickled plate |
| CN112126851A (en) * | 2020-08-30 | 2020-12-25 | 五矿营口中板有限责任公司 | high-Ti-content micro-Al easy-welding low-alloy structural steel in ultra-fast cooling mode and manufacturing method thereof |
| CN112126851B (en) * | 2020-08-30 | 2021-11-02 | 五矿营口中板有限责任公司 | high-Ti-content micro-Al easy-welding low-alloy structural steel in ultra-fast cooling mode and manufacturing method thereof |
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Application publication date: 20160720 |