CN1618539A - Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket - Google Patents

Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket Download PDF

Info

Publication number
CN1618539A
CN1618539A CN 200410051927 CN200410051927A CN1618539A CN 1618539 A CN1618539 A CN 1618539A CN 200410051927 CN200410051927 CN 200410051927 CN 200410051927 A CN200410051927 A CN 200410051927A CN 1618539 A CN1618539 A CN 1618539A
Authority
CN
China
Prior art keywords
temperature
steel
hot
rolling
strand
Prior art date
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.)
Granted
Application number
CN 200410051927
Other languages
Chinese (zh)
Other versions
CN100336617C (en
Inventor
毛新平
王中丙
陈贵江
柴毅忠
张若生
黄志勇
许传棻
李烈军
严旭昌
洪兵雄
陈学文
林振源
谢利群
庄汉洲
钟志永
沈训良
周学巨
李轲新
梁建宝
刘义军
苏东
余雁
袁红霞
张国广
李金象
刘蘅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUJIANG IRON AND STEEL CO Ltd GUANGZHOU
Original Assignee
ZHUJIANG IRON AND STEEL CO Ltd GUANGZHOU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHUJIANG IRON AND STEEL CO Ltd GUANGZHOU filed Critical ZHUJIANG IRON AND STEEL CO Ltd GUANGZHOU
Priority to CNB2004100519274A priority Critical patent/CN100336617C/en
Publication of CN1618539A publication Critical patent/CN1618539A/en
Application granted granted Critical
Publication of CN100336617C publication Critical patent/CN100336617C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

A conticasting-tandem rolling technology for manufacturing the hot-rolled steel plates HP295 used to weld gas cylinder features use of the thin plate billet CSP as raw material, and includes smelting conticasting, thermal homogenizing, hot tandem rolling, and winding. Its advantages are high productivity and low energy consumption.

Description

A kind of method of application of thin slab continuous casting rolling explained hereafter hot-rolled steel plates for welded gas cylinder
Technical field
The present invention relates to a kind of production method of hot-rolled steel plates for welded gas cylinder, particularly relate to a kind of method of application of thin slab continuous casting rolling explained hereafter hot-rolled steel plates for welded gas cylinder.
Background technology
The technological process of production of traditional hot-rolled steel plates for welded gas cylinder is: molten steel → continuous casting → continuous casting billet cooling and inspection → reconditioning → heating → hot rolling, its technological process is long, energy consumption is high, causes production cost higher.Close-coupled band steel production technology (the Compact Strip Production that later 1980s succeeds in U.S. Niu Ke company, abbreviation CSP) feature is a CSP, and its technological process is: electric furnace or converter provide molten steel → continuous casting → soaking → hot continuous rolling.Recent years, the product scope that CSP produces constantly enlarges, and it is a new trial that Zhujiang Iron and Steel Co Ltd, Guangzhou adopts this technology to produce the welded gas cylinder hot-rolled steel.
The extensive use of family expenses bottle gas has promoted the development that hot-rolled steel plates for welded gas cylinder is produced, and needs ten thousand tons of weldering bottle plate 60-70, and produces more than 20 ten thousand tons of weldering bottle plates the steel cylinder factory year in area, Guangdong in present domestic year.Zhujiang Iron and Steel Co Ltd, Guangzhou is just taking the technical matters exploitation hot-rolled steel plates for welded gas cylinder different with other steel mill with meeting the market requirement at present according to self uhp electric arc furnace-LF refining furnace-CSP continuous casting and rolling technique of sheet bar appointed condition.
Summary of the invention
The object of the present invention is to provide a kind of method of application of thin slab continuous casting rolling explained hereafter hot-rolled steel plates for welded gas cylinder, this method technology is simple, cost is low, production efficiency is high.
For achieving the above object, the method for a kind of application of thin slab continuous casting rolling explained hereafter hot-rolled steel plates for welded gas cylinder provided by the invention comprises the step of following order:
(1) steel-making: adopt uhp electric arc furnace, tapping C guarantees≤0.1%, and tapping temperature is 1620～1650 ℃; The molten steel that converter is come out carries out refining in ladle refining furnace, liquid steel temperature was controlled at 1590～1605 ℃ when refining finished, and the percetage by weight content of molten steel composition is controlled at: C0.16～0.18, Si≤0.06, Mn 0.70～1.00, P≤0.015, S≤0.008, Al 0.03～0.04, Cu+Cr+Ni≤0.20;
(2) continuous casting: molten steel injects pans by the slide gate nozzle of ladle bottom, and the pans liquid steel temperature is 1545～1560 ℃, adopts funnel-type crystallizer, and the strand pulling rate is 4.0～6.0m/min, and the slab thickness that goes out crystallizer is 50～70mm;
(3) soaking: above-mentioned strand enters soaking pit after shearing through two cooling bending straightenings, and it is 950～1050 ℃ that strand advances furnace temperature, and heating and temperature control is at 1100～1200 ℃, and tapping temperature is 1000～1150 ℃;
(4) hot continuous rolling: enter continuous hot-rolling mill after going out the iron scale that forms on the strand process descaling mill removal casting billet surface of soaking pit, start rolling temperature is 1060～1100 ℃, and finishing temperature is 850～880 ℃;
(5) batch: thin plate batches rolling by coiling machine after the cooling of laminar flow cooling section, the laminar flow cooling rate is controlled at 20～25 ℃/s, and coiling temperature is 630～660 ℃.
The percetage by weight of the carbon content of molten steel after refining is controlled at less than 0.18% among the present invention, can guarantee the welding performance of gas cylinder plate, liquid steel refining among the present invention can meet the requirements molten steel composition and temperature by such as heating up, adding alloy and be adjusted to conventional measures such as branch, calcium processing.The selection of the start rolling temperature of hot continuous rolling of the present invention, finishing temperature, laminar flow cooling velocity and coiling temperature is in order to carry out controlled rolling and controlled cooling, to obtain required steel plate tissue and performance to satisfy the requirement of welded gas cylinder with steel plate.In order to guarantee product quality, the present invention mainly takes to carry out the measure of microalloying treatment technology, to improve welding performance and mechanical strength; Controlled rolling technology, particularly technological parameters such as the heating-up temperature of control band steel, finishing temperature, coiling temperature are realized the optimum Match control to intensity, plasticity, guarantee yield tensile ratio≤0.80.
The present invention compared with prior art has following advantage: owing to adopt CSP bar strip continuous casting and rolling flow path technology, need not strand cooling inspection and post bake process in the traditional handicraft, be rolled after directly entering the soaking pit soaking, shortened technological process, improved production efficiency, energy consumption and cost decrease, and energy consumption per ton steel of the present invention is 40～41% of an old process, the continuous casting billet recovery rate brings up to 97.0% by 94.6% of old process, and ton steel cost descends 30～50 dollars.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the schematic diagram of embodiments of the invention equipment therefor.
The specific embodiment
The embodiment of the invention 1 in turn includes the following steps:
(1) steel-making: converter 1 employing capacity is 150 tons a vertical electric furnace, and tap is 152 tons, and the percetage by weight of tapping carbon is 0.06%, and tapping temperature is 1630 ℃; The molten steel that converter is come out carries out refining in ladle refining furnace 2, adopt to heat up, add alloy and be adjusted to conventional methods such as branch, calcium processing, the percetage by weight content of the molten steel composition when refining is finished is controlled at C 0.17, Si0.03, Mn 0.74, P 0.011, S 0.003, Cu 0.09, Al 0.025, and liquid steel temperature is 1602 ℃.
(2) continuous casting: molten steel injects pans 4 by the slide gate nozzle of ladle 3 bottoms, tundish capacity is 30 tons, the liquid steel temperature of pans is 1550 ℃, when treating that molten steel weight reaches 22 tons of left and right sides, open the stopper of pans, molten steel is from pans hopper type crystallizer 5, and this mold oscillation is a hydraulic vibration, the strand pulling rate is 4.8m/min, and the slab thickness that goes out crystallizer is 50mm.
(3) soaking: strand enters later soaking pit 7 through secondary cooling zone cooling bending straightening shear 6, it is 980 ℃ that strand advances furnace temperature, and tapping temperature is 1140 ℃, and strand heats up and equalizing temperature at soaking pit, the length of soaking pit is 192 meters, and the strand time of staying is 28min.
(4) hot continuous rolling: after strand goes out soaking pit 7, remove the iron scale that forms on the casting billet surface through descaling mill 8 and enter six frame continuous hot-rolling mills 9, start rolling temperature is 1080 ℃, and finishing temperature is 860 ℃, rolling average speed is about 6m/s, the lamella thickness≤6mm after rolling.
(5) batch: above-mentioned thin plate batches rolling by coiling machine 11 after 10 coolings of laminar flow cooling section, continuous 25 ℃/s of cooling section cooling velocity, and coiling temperature is 650 ℃.
The whole piece CSP of present embodiment produces line length 350mm, and the width of finished product volume is 1160mm, 24.8 tons of maximum volume-weights.
Gas cylinder board finished product that present embodiment is produced and GB GB5842 and 6653 specified chemical composition are more as shown in table 1, and its mechanical property is as shown in table 3, its σ sOn average be higher than 14% of standard value, δ on average is higher than 16% of standard value.
Gas cylinder plate that table 1 embodiment 1 produces and the chemical composition of GB5842 are relatively
Kind ????C ??Si ??Mn ??P ??S ????Cu ????AL
Embodiment 1 ????0.16 ??0.03 ??0.72 ??0.011 ??0.003 ????0.12 ????0.025
????GB5842 ????GB6653 ????0.13～0.18 ??≤0.10 ??0.70～1.0 ??＜0.015 ??＜0.008
Table 2HP295 hot rolled coil mechanical property and processing performance
The trade mark ??σ sMPa ??σ bMPa ??δ 5％ ??σ s/σ b 180 ° of clod washes
??HP295 ??≥295 ??445~515 ??≥28 ??＜0.80 D=2a (a is a sample thickness, and d is the flexual center diameter)
The gas cylinder plate mechanical property that table 3 embodiment 1 produces
Reel number ?????????????σ sMPa ?????????????σ bMPa ?????????????σ s/σ b ?????????????δ 5％
Laterally Vertically ??45° Laterally Vertically ??45° Laterally Vertically ??45° Laterally Vertically ????45°
?303003225 ??350 ??355 ??350 ??450 ??455 ??450 ??0.78 ??0.78 ??0.78 ??34 ????33 ????35
?306000834 ??310 ??315 ??315 ??455 ??455 ??455 ??0.68 ??0.69 ??0.69 ??32 ????28 ????30
?306000833 ??310 ??315 ??315 ??455 ??455 ??455 ??0.68 ??0.69 ??0.69 ??31 ????32 ????34
?306000851 ??340 ??345 ??345 ??490 ??495 ??495 ??0.69 ??0.70 ??0.70 ??29 ????32 ????31
?306000854 ??340 ??350 ??340 ??490 ??485 ??475 ??0.69 ??0.71 ??0.72 ??29 ????32 ????31
?306000856 ??340 ??345 ??350 ??490 ??495 ??485 ??0.69 ??0.70 ??0.72 ??29 ????30 ????32
?306000830 ??335 ??350 ??345 ??475 ??470 ??470 ??0.71 ??0.74 ??0.73 ??38 ????37 ????38
?306000831 ??335 ??340 ??350 ??475 ??470 ??475 ??0.71 ??0.72 ??0.74 ??38 ????38 ????37
?306000830 ??335 ??350 ??345 ??485 ??485 ??490 ??0.69 ??0.72 ??0.70 ??38 ????36 ????37
?306000829 ??335 ??355 ??340 ??475 ??465 ??465 ??0.71 ??0.76 ??0.73 ??38 ????37 ????36
?306000832 ??310 ??320 ??315 ??455 ??455 ??460 ??0.68 ??0.70 ??0.68 ??32 ????31 ????31
?306000837 ??340 ??330 ??345 ??475 ??465 ??470 ??0.72 ??0.71 ??0.73 ??34 ????33 ????35
?306000829 ??335 ??345 ??340 ??475 ??480 ??485 ??0.71 ??0.72 ??0.70 ??38 ????37 ????36
Average ??331.9 ??339.6 ??338.1 ??472.7 ??471.5 ??471.5 ??0.703 ??0.718 ??0.716 ??33.8 ????33.5 ????34.1
Mean square deviation ??13.16 ??14.64 ??13.62 ??14.52 ??15.05 ??14.34 ??0.03 ??0.03 ??0.03 ??3.78 ????3.15 ????2.75

Claims (2)

1, the method for a kind of application of thin slab continuous casting rolling explained hereafter hot-rolled steel plates for welded gas cylinder HP295 comprises the step of following order:
(1) steel-making: adopt uhp electric arc furnace, tapping C guarantees≤0.1%, and tapping temperature is 1620～1650 ℃; The molten steel that converter is come out carries out refining in ladle refining furnace, liquid steel temperature was controlled at 1590～1605 ℃ when refining finished, and the percetage by weight content of molten steel composition is controlled at: C0.16～0.18, Si≤0.06, Mn 0.70～1.00, P≤0.015, S≤0.008, Al 0.03～0.04, Cu+Cr+Ni≤0.20;
(2) continuous casting: molten steel injects pans by the slide gate nozzle of ladle bottom, and the pans liquid steel temperature is 1545～1560 ℃, adopts funnel-type crystallizer, and the strand pulling rate is 4.0～6.0m/min, and the slab thickness that goes out crystallizer is 50～70mm;
(3) soaking: above-mentioned strand enters soaking pit after shearing through two cooling bending straightenings, and it is 950～1050 ℃ that strand advances furnace temperature, and heating and temperature control is at 1100～1200 ℃, and tapping temperature is 1000～1150 ℃;
(4) hot continuous rolling: enter continuous hot-rolling mill after going out the iron scale that forms on the strand process descaling mill removal casting billet surface of soaking pit, start rolling temperature is 1060～1100 ℃, and finishing temperature is 850～880 ℃;
(5) batch: thin plate batches rolling by coiling machine after the cooling of laminar flow cooling section, the laminar flow cooling rate is controlled at 20～25 ℃/s, and coiling temperature is 630～660 ℃.
2, method according to claim 1 is characterized in that the liquid steel refining in the step (1) can be adjusted to branch or calcium processing conventional measure by the alloy that heats up, adds, and molten steel composition and temperature are met the requirements.
CNB2004100519274A 2004-10-25 2004-10-25 Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket Expired - Fee Related CN100336617C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2004100519274A CN100336617C (en) 2004-10-25 2004-10-25 Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2004100519274A CN100336617C (en) 2004-10-25 2004-10-25 Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket

Publications (2)

Publication Number Publication Date
CN1618539A true CN1618539A (en) 2005-05-25
CN100336617C CN100336617C (en) 2007-09-12

Family

ID=34764077

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004100519274A Expired - Fee Related CN100336617C (en) 2004-10-25 2004-10-25 Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket

Country Status (1)

Country Link
CN (1) CN100336617C (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100345641C (en) * 2005-10-20 2007-10-31 广州珠江钢铁有限责任公司 Process for producing V-N micro alloy high strength steel band using thin plate blank continuously casting and continuously rolling technology
CN100375829C (en) * 2006-06-06 2008-03-19 广州珠江钢铁有限责任公司 Method for producing J55-grade steel for petroleum casing based on electric furnace sheet billet continuous casting an rolling process
CN100409955C (en) * 2006-09-29 2008-08-13 邯郸钢铁股份有限公司 Technique for CSP sheet billet production line cold rolling feeding
CN100418650C (en) * 2006-09-29 2008-09-17 邯郸钢铁股份有限公司 CSP production line cold rolling feed deformation system
CN100443201C (en) * 2007-01-25 2008-12-17 鞍钢股份有限公司 Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate
WO2009076890A1 (en) * 2007-12-11 2009-06-25 Wuhan Iron and Steel (Group) Corp Methode for producing wide flat steel by thin slab continuous casting and rolling and the system thereof
CN101153371B (en) * 2006-09-27 2010-04-07 宝山钢铁股份有限公司 High-strength cold-formed hot continuous rolled steel plate and method of preparing the same
CN101346196B (en) * 2005-12-28 2010-05-19 东芝三菱电机产业系统株式会社 Induction heating device
CN103774039A (en) * 2013-12-26 2014-05-07 马钢(集团)控股有限公司 Manufacturing process for steel hot-rolled plate coil for welded gas bottle
CN115896590A (en) * 2022-09-26 2023-04-04 福建鼎盛钢铁有限公司 Production process of medium-quality thin-specification carbon tool steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391264B (en) * 2007-09-19 2011-02-02 中冶赛迪工程技术股份有限公司 Technique method of thin middle plate continuous casting and rolling production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4041206C2 (en) * 1990-12-21 2003-04-17 Sms Demag Ag Process and plant for the production of hot-rolled steel strip, in particular for stainless steels from continuously cast primary material
US5430930A (en) * 1993-10-12 1995-07-11 Italimpianti Of America, Inc. Method of manufacturing hot strip
DE19814223A1 (en) * 1998-03-31 1999-10-07 Schloemann Siemag Ag Process for the production of microalloyed structural steels
CN1184118C (en) * 2001-04-20 2005-01-12 广州珠江钢铁有限责任公司 Technology for manufacturing plates for container
CN1207407C (en) * 2002-04-05 2005-06-22 广州珠江钢铁有限责任公司 Method for improving cold-forming property of hot rolled steel plate

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100345641C (en) * 2005-10-20 2007-10-31 广州珠江钢铁有限责任公司 Process for producing V-N micro alloy high strength steel band using thin plate blank continuously casting and continuously rolling technology
CN101346196B (en) * 2005-12-28 2010-05-19 东芝三菱电机产业系统株式会社 Induction heating device
CN100375829C (en) * 2006-06-06 2008-03-19 广州珠江钢铁有限责任公司 Method for producing J55-grade steel for petroleum casing based on electric furnace sheet billet continuous casting an rolling process
CN101153371B (en) * 2006-09-27 2010-04-07 宝山钢铁股份有限公司 High-strength cold-formed hot continuous rolled steel plate and method of preparing the same
CN100409955C (en) * 2006-09-29 2008-08-13 邯郸钢铁股份有限公司 Technique for CSP sheet billet production line cold rolling feeding
CN100418650C (en) * 2006-09-29 2008-09-17 邯郸钢铁股份有限公司 CSP production line cold rolling feed deformation system
CN100443201C (en) * 2007-01-25 2008-12-17 鞍钢股份有限公司 Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate
WO2009076890A1 (en) * 2007-12-11 2009-06-25 Wuhan Iron and Steel (Group) Corp Methode for producing wide flat steel by thin slab continuous casting and rolling and the system thereof
CN103774039A (en) * 2013-12-26 2014-05-07 马钢(集团)控股有限公司 Manufacturing process for steel hot-rolled plate coil for welded gas bottle
CN103774039B (en) * 2013-12-26 2016-09-14 马钢(集团)控股有限公司 A kind of hot-rolled plate coil for welded gas cylinder manufacturing process
CN115896590A (en) * 2022-09-26 2023-04-04 福建鼎盛钢铁有限公司 Production process of medium-quality thin-specification carbon tool steel

Also Published As

Publication number Publication date
CN100336617C (en) 2007-09-12

Similar Documents

Publication Publication Date Title
CN104213033B (en) 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof
CN106756507B (en) The method for producing Thin Specs high-carbon steel based on ESP bar strip continuous casting and rolling flow paths
CN104046914B (en) A kind of non-hardened and tempered steel and production technique thereof
CN101941021B (en) Method for producing extra-deep drawing cold-rolled steel plate based on ASP process
US8021599B2 (en) Method and installation for producing steel products with optimum surface quality
CN104032108B (en) A kind of production method of duplex stainless steel hot rolling volume
CN101549353B (en) Method for producing low-alloy and large-size square steel by continuously casting and continuously rolling
CN110453149B (en) High-strength finish-rolled deformed steel bar and production process thereof
CN100336617C (en) Method for using hot-rolled steel plate to produce and steel cylinder by using continuously casting and rolling thin steel blanket
CN104043660B (en) A kind of production technology of non-hardened and tempered steel
KR20150139612A (en) Method for producing a metal strip
CN105779881A (en) Production method of high-carbon spring steel strip
CN110396648A (en) A kind of special thick alloy mold steel plate of continuous casting billet production and its manufacturing method
CN107974615A (en) Thickness is less than the Q460E high strength steel plates and its production method of 12mm
CN105803152A (en) Center porosity control method for 30CrMo round blooms and steel casting blooms
CN110396649A (en) A kind of control production method of the low-carbon sulphur automatic steel with hot-rolling edge cracking
CN112210725A (en) Steel strip for hot forming with tensile strength of 1900MPa and production method thereof
CN105925889A (en) Ultrathick specification 1.2311 mold steel plate and preparation method thereof
CN101892419A (en) Method for producing low-carbon low-silicon high magnetic induction non-oriented electrical steel plate by CSP process
CN113462950B (en) Production process of 410S martensitic stainless steel
CN102978511A (en) Method for producing hot-rolled steel plate for automobile girder steel by low cost
CN107058898A (en) A kind of Q690D low-carbon bainite steels and its production method
CN1184118C (en) Technology for manufacturing plates for container
CN108531811A (en) A kind of preparation method of casting TRIP steel strips
CN1242086C (en) Manufacturing technique of hot rolled high tensile steel plate in use for cars based on compact type process flow of producing band steel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070912

Termination date: 20131025