CN201512572U - Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip - Google Patents
Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip Download PDFInfo
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- CN201512572U CN201512572U CN 200920246244 CN200920246244U CN201512572U CN 201512572 U CN201512572 U CN 201512572U CN 200920246244 CN200920246244 CN 200920246244 CN 200920246244 U CN200920246244 U CN 200920246244U CN 201512572 U CN201512572 U CN 201512572U
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Abstract
The utility model provides a dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strips and belongs to the field of cold-roll steel sheet continuous subsequent processing in metallurgical industry. The body of the dual-purpose furnace comprises a heating and soaking section, a quick-cooling section, an equalizing section, a thermal tension roll chamber (4), a zinc pot, an after-galvanizing cooling system, a transition section, an overaging section, a final cooling section, a descending section, a water quenching tank and squeeze rolls. The whole furnace is divided into two parts. When galvanizing, the steel strip passes through the heating and soaking section, the quick-cooling section, the equalizing section, the thermal tension roll chamber, the zinc pot, the after-galvanizing cooling system, the water quenching tank and the squeeze rolls in sequence, therefore, the technological requirements for galvanizing process are met. During the continuous annealing process, the steel strip passes through the heating and soaking section (1), the quick-cooling section, the equalizing section, the thermal tension roll chamber, the transition section, the overageing section, the final cooling section, the descending section, the water quenching tank and the squeeze rolls in sequence, therefore, the technological requirements for continuous annealing process are met, and the dual-purpose furnace can easily achieve the dual purposes in one production line and flexibly control the product structure.
Description
Technical field
The utility model belongs to the continuous subsequent disposal of the cold-rolled steel sheet field of metallurgy industry, particularly relates to a kind of steel band continuous hot galvanizing and continuous annealing dual-purpose stove.
Background technology
In recent years, domestic cold-rolled steel sheet production development is rapid, after wherein most of cold-rolled steel sheet needs annealed or galvanizing, comes into the market with the form of cold rolled annealed plate or galvanized sheet.Yet the market price of cold rolled annealed in recent years plate and heat zinc coating plate is low when high when scrupulously and respectfully poor, therefore in the face of intense market competition, how to adjust the product mix neatly, becomes the key of Business survival and development.
Conventional steel plate continuous hot galvanizing and continuous annealing production line are having a lot of something in common aspect technological process, the processing unit, as go into, outlet section equipment is identical with the process section most equipment; Just owing to the difference of both heat treating regimes, stove has bigger difference.Fig. 1,2 is respectively continuous hot galvanizing and the typical heat treatment cycle curve of continuous annealing, and both key distinctions are in fast cold back technology as seen from the figure.So how utilize existing production line to greatest extent, when saving equipment investment cost, how to realize a production line can pot galvanize again can continuous annealing, therefore,, develop zinc-plated, the dual-purpose stove of annealing and is brought into schedule in the face of the problems referred to above.
Summary of the invention
The purpose of this utility model is to provide a kind of steel band continuous hot galvanizing and continuous annealing dual-purpose stove, has realized adjusting the product mix flexibly, can produce steel plate galvanized and can produce annealed sheet steel again.
The body of heater of utility model is opened roller chamber, zinc pot, plating postcooling system, transition section, overaging section, final cooling section, downcomer, shrend and wringing system and is formed by heating and soaking zone, fast cold section, equalizer section, heat; Wherein heating and soaking zone, fast cold section, equalizer section, the heat shell of opening roller chamber and transition section, overaging section, final cooling section, downcomer is the steel plate seal welding, external application shaped steel and band steel are reinforced, by being welded and fused, each stove section is welded together closely by continuous uninterrupted seal weld in the furnace shell outside between each stove section with convenient; Zinc pot and shrend and wringing system then are assemblied in zinc-plated respectively and annealing process section end, do not have rigid the connection with other furnace part; Whole plating postcooling system all straddles on transition section, overaging section, final cooling section, downcomer, shrend and the wringing system by steel structure platform, and the position that intersects of horizontal transition section and plating postcooling system is provided with the two channels sealing damper as shown in Figure 2, by this flashboard, satisfy the conversion of steel band, thereby realized that successfully a production line not only can carry out steel plate continuous annealing but also can realize the steel plate continuous hot-dipping galvanizing in the different process flow process.
Full stove is divided into two technical process, and steel band is opened roller chamber, zinc pot 5, plated postcooling system, watch-quench tank, squeezing roller, thereby realize galvanized processing requirement by heating and soaking zone, fast cold section, equalizer section, heat successively when zinc-plated; When continuous annealing, then steel band is opened the processing requirement that roller chamber, transition section, overaging section, final cooling section, downcomer, shrend and squeezing roller system can realize continuous annealing again by heating and soaking zone, fast cold section, equalizer section, heat successively.
The technical scheme that its technical problem that solves the utility model adopts is; Continuous hot galvanizing is different with the continuous annealing heat treating regime, thus each section of stove dispose bigger difference.Fig. 3,4 is respectively continuous hot galvanizing and the typical heat treatment cycle curve of continuous annealing.Both key distinctions are in fast cold back: for continuous hot galvanizing, steel plate enters after fast cold section is chilled to 460～480 ℃ and carries out galvanizing in the zinc pot, it is about 460 ℃ that the band steel goes out zinc pot temperature, plating back band steel is chilled to below 200 ℃ by plating postcooling system in atmosphere and enters watch-quench tank, is chilled to below 40 ℃ through shrend.For finishing said process, galvanization production line is provided with equipment such as zinc pot, coating operating device, plating postcooling system and shrend.Annealing process is then different, and steel plate enters the overaging section after being chilled to 400～430 ℃ at fast cold section to carry out overaging and handle, and then is chilled at final cooling section to be sealed into watch-quench tank below 200 ℃ then and to be chilled to below 40 ℃.Overaging and final cooling are all finished in being full of the stove of protective atmosphere.Therefore, anneling production line need be provided with equipment such as overaging section, final cooling section and watch-quench tank.Realize that a production line can anneal again in pot galvanize, zinc-plated and these required processing units of annealing all must be arranged on same the unit.Fig. 3 is steel band continuous hot galvanizing and continuous annealing dual-purpose stove schema.Fast cold section of the overaging section of conventional continuous annealing production line annealing furnace and final cooling section and its front is to fuse by a very short horizontal furnace throat, for arrange zinc-plated must processing unit, this unit draws back the overaging section of annealing furnace and final cooling section and its front fast cold section, arrange equipment such as zinc-plated needed zinc pot, coating Controlling System and plating postcooling tower, overaging section and final cooling section are arranged in clear position below the zinc-plated cooling tower.And then the overaging section is sealedly connected above striding across the zinc pot for the transition section of earlier vertical back level by LAP with fast cold section, and below the vertical transition section, set up seal gate valve.Gate valve is opened during annealing, and steel plate enters the overaging section by transition section and final cooling section is annealed.Gate valve is closed when zinc-plated, and steel plate enters zinc pot and plating postcooling system, carry out zinc-plated, thereby realized that successfully a production line not only can carry out steel plate continuous annealing but also can realize the steel plate continuous hot-dipping galvanizing.
The beneficial effect of utility model
The beneficial effects of the utility model are, utilize existing production line to greatest extent, when saving equipment investment cost, the continuous annealing process that can satisfy cold-rolled steel sheet can satisfy the annealing process of continuous hot galvanizing again, realized a production line can pot galvanize again can continuous annealing, adjust the product mix flexibly, improve the adaptive faculty that producer strives in the face of fierce market model, stronger practicality is arranged.
Description of drawings
Fig. 1 is the utility model steel band continuous hot galvanizing and continuous annealing dual-purpose stove structure, schema.Wherein, heating and soaking zone 1, fast cold section 2, equalizer section 3, heat are opened roller chamber 4, zinc pot 5, plating postcooling system 6, transition section 7, overaging section 8, final cooling section 9, downcomer 10, shrend and wringing system 11.
Fig. 2 is structure, the schema that the utility model heat is opened roller chamber and transition section.Wherein, heat is opened roller chamber 4, vertical seal flashboard 12, vertical transition section 13, furnace roller reversal chamber 14, horizontal transition section 15, two channels sealing damper 16, plating postcooling system 6.
Fig. 3 is a continuous hot-dipping galvanizing typical case heat treatment cycle curve of the present utility model.
Fig. 4 is a continuous annealing typical case heat treatment cycle curve of the present utility model.
Embodiment
In dual-purpose stove structure shown in Figure 1, schema:
When steel band needs galvanizing, then steel band enters heating and soaking zone 1 successively: this section ingress section has sealing chamber, can realize furnace gas and stove outer gas-insulated, steel band under high purity nitrogen hydrogen blended reducing atmosphere by rapid heating, finally fully be heated to the recrystallization annealing temperature of processing requirement, thereby make steel strip surface fully be reduced into spongiform pure iron layer.This section is provided with deviation correction mechanism in the stove simultaneously, guarantees the self-centering of steel band in the stove section; Fast cold section 2: steel band enters fast cold section, makes steel band be cooled to into preceding about 460～480 ℃ the temperature that requires of plating bath pot through shower cooling; Equalizer section 3: make steel band equalizing temperature before going into the zinc pot; Heat is opened roller chamber 4: steel band is successively opened roller through a, b, three heat of c and is added to open and turn to the back to enter the zinc pot by the stove nose.The band steel makes the inside and outside tension force of stove cut off behind overheated roller, can improve the outer tension force of stove, helps the control of follow-up air knife to coating; (sealing damper of should heat opening between roller chamber and the transition section this moment is in closing state) zinc pot 5: steel band enters ceramic induction zinc pot with certain angle of inclination under airtight state, thereby finishes hot dipping degree technology.This zinc pot disposes the sinking roller simultaneously, stablizes roller and coating operating device, can control the homogeneity of the thickness and the coating of coating according to customer requirements; Plating postcooling system 6: plating postcooling system is made up of cooling tower and many cover air cooling systems of steel construction, steel band can be chilled to watch-quench tank 11 below 200 ℃ through this system: this watch-quench tank is zinc-plated and anneals shared, be provided with two sinking deflector roll in the groove, can be by the technology difference, the steel band that corresponding passage is passed through is chilled to below 40 ℃; Squeezing roller 12: the moisture content that will go out the steel strip surface of watch-quench tank is extracted.
When steel band needs continuous annealing, then steel band enters heating and soaking zone 1 successively: this section ingress is provided with sealing chamber, can realize furnace gas and stove outer gas-insulated, steel band under high purity nitrogen hydrogen blended reducing atmosphere by rapid heating, finally fully be heated to the recrystallization annealing temperature of processing requirement, thereby make steel strip surface fully be reduced into spongiform pure iron layer.Simultaneously, this section is provided with deviation correction mechanism in the stove, guarantees the self-centering of steel band in the stove section; Fast cold section 2: steel band enters fast cold section, makes steel band be chilled to 400～430 ℃ through shower cooling; Equalizer section 3: make steel band equalizing temperature before entering the overaging section; Heat is opened roller chamber 4: shown in structure, schema that Fig. 2 heat is opened roller chamber and transition section, this moment, steel band opened in heat that roller is indoor only to be diverted to vertical stroke by a, b two rollers; Transition section 5: transition section is made up of vertical seal flashboard, vertical transition section, furnace roller reversal chamber, horizontal transition section and two channels sealing damper; as shown in Figure 2; this moment, steel band entered transition section by the sealing damper of opening; this transition section is all-sealed structure and is furnished with thermal insulation layer, guarantees that the steel band of band temperature about 400～430 ℃ is by passing through in restitutive protection's atmosphere.The two channels sealing damper is in closing condition at this moment, only opens when the needs steel band is zinc-plated, passes through smoothly in the vertical stroke of plating postcooling system to guarantee Galvanized Steel Strip; Overaging section 8: make steel band carry out overaging and handle, and guarantee that steel band residence time in the overaging section satisfies processing requirement at 400～430 ℃; Final cooling section 9: steel band enters final cooling section, through shower cooling steel band is chilled to below 200 ℃; Downcomer 10: steel band is further abundant naturally cooling in restitutive protection's atmosphere of this section, and is sealed into into watch-quench tank.This section middle part is provided with nitrogen double disc watertight chest, each the stove section before can not blowing back into a large amount of water vapour of guaranteeing to produce in the watch-quench tank.Shrend and wringing system 11: this watch-quench tank is zinc-plated and anneals shared, be provided with two sinking deflector roll in the groove, can be by the technology difference, the steel band that corresponding passage is passed through is chilled to below 40 ℃, and is extracted by the moisture content that the squeezing roller that is positioned at the watch-quench tank exit end will go out the steel strip surface of watch-quench tank.
Claims (1)
1. steel band continuous hot galvanizing and continuous annealing dual-purpose stove, it is characterized in that body of heater is made up of heating and soaking zone (1), fast cold section (2), equalizer section (3), a heat roller chamber (4), zinc pot (5), plating postcooling system (6), transition section (7), overaging section (8), final cooling section (9), downcomer (10), shrend and wringing system (11) successively from the steel band traffic direction; Wherein heating and soaking zone (1), fast cold section (2), equalizer section (3), heat are opened roller chamber (4) and transition section (7), overaging section (8), finally the shell of cooling section (9), downcomer (10) is the steel plate seal welding, external application shaped steel and band steel are reinforced, by being welded and fused, the furnace shell outside welds together each stove section by seal weld between each stove section; Zinc pot (5) and shrend and wringing system (11) then are assemblied in zinc-plated respectively and annealing process section end; Whole plating postcooling system (6) all straddles on transition section (7), overaging section (8), final cooling section (9), downcomer (10), shrend and the wringing system (11) by steel structure platform, and the horizontal transition section is provided with the two channels sealing damper with the position that plating postcooling system intersects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920246244 CN201512572U (en) | 2009-10-22 | 2009-10-22 | Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920246244 CN201512572U (en) | 2009-10-22 | 2009-10-22 | Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip |
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| CN201512572U true CN201512572U (en) | 2010-06-23 |
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| CN 200920246244 Expired - Lifetime CN201512572U (en) | 2009-10-22 | 2009-10-22 | Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011127A (en) * | 2010-11-24 | 2011-04-13 | 佛山市高明基业冷轧钢板有限公司 | Unit with functions of continuous hot galvanizing and continuous annealing |
| CN102676968A (en) * | 2012-04-09 | 2012-09-19 | 安徽赛远薄钢科技有限公司 | Tension measuring machine in hot galvanizing system |
| CN104263900A (en) * | 2014-09-25 | 2015-01-07 | 合肥恒泰钢结构有限公司 | Reducing annealing furnace for cold-strip steel |
| CN104278141A (en) * | 2014-09-25 | 2015-01-14 | 合肥恒泰钢结构有限公司 | Cold-rolled steel strip continuous reduction annealing furnace |
| CN105339520A (en) * | 2013-06-26 | 2016-02-17 | 杰富意钢铁株式会社 | Combined treatment equipment for hot dip galvanizing of steel plate and continuous annealing |
| CN105327968A (en) * | 2015-09-30 | 2016-02-17 | 江苏刚正薄板科技有限公司 | Thick plate continuous rolling and continuous plating production line adopting disengagement and engagement method |
| CN105420654A (en) * | 2015-12-15 | 2016-03-23 | 中冶南方工程技术有限公司 | Sharing unit for continuous annealing and galvanizing of high-strength steel |
| CN106623421A (en) * | 2016-12-27 | 2017-05-10 | 上海宝钢型钢有限公司 | Continuous production method and line for variable-thickness profile |
| CN106884131A (en) * | 2017-01-13 | 2017-06-23 | 浙江华达新型材料股份有限公司 | The technique and continuous hot dip galvanizing steel belt annealing furnace of a kind of steel plate secondary galvanization |
| CN111315911A (en) * | 2017-11-08 | 2020-06-19 | 安赛乐米塔尔公司 | Galvanized annealed steel sheet |
| CN112095061A (en) * | 2020-08-31 | 2020-12-18 | 广州Jfe钢板有限公司 | Production switching production channel and switching method for two different steel plate products |
| CN113811627A (en) * | 2019-04-29 | 2021-12-17 | 法孚斯坦因公司 | Treatment line for the continuous treatment of metal strips with the dual purpose of producing annealed and dip-coated or uncoated strips, and corresponding cooling tower and method of switching from one configuration to another |
-
2009
- 2009-10-22 CN CN 200920246244 patent/CN201512572U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011127A (en) * | 2010-11-24 | 2011-04-13 | 佛山市高明基业冷轧钢板有限公司 | Unit with functions of continuous hot galvanizing and continuous annealing |
| CN102676968A (en) * | 2012-04-09 | 2012-09-19 | 安徽赛远薄钢科技有限公司 | Tension measuring machine in hot galvanizing system |
| CN105339520A (en) * | 2013-06-26 | 2016-02-17 | 杰富意钢铁株式会社 | Combined treatment equipment for hot dip galvanizing of steel plate and continuous annealing |
| CN105339520B (en) * | 2013-06-26 | 2017-11-17 | 杰富意钢铁株式会社 | The molten zinc plating of steel plate and the dual-purpose processing equipment of continuous annealing |
| CN104278141A (en) * | 2014-09-25 | 2015-01-14 | 合肥恒泰钢结构有限公司 | Cold-rolled steel strip continuous reduction annealing furnace |
| CN104263900A (en) * | 2014-09-25 | 2015-01-07 | 合肥恒泰钢结构有限公司 | Reducing annealing furnace for cold-strip steel |
| CN104263900B (en) * | 2014-09-25 | 2019-03-29 | 合肥市伟远金属材料有限公司 | A kind of cold-strip steel reductive annealed oven |
| CN105327968A (en) * | 2015-09-30 | 2016-02-17 | 江苏刚正薄板科技有限公司 | Thick plate continuous rolling and continuous plating production line adopting disengagement and engagement method |
| CN105420654A (en) * | 2015-12-15 | 2016-03-23 | 中冶南方工程技术有限公司 | Sharing unit for continuous annealing and galvanizing of high-strength steel |
| CN106623421A (en) * | 2016-12-27 | 2017-05-10 | 上海宝钢型钢有限公司 | Continuous production method and line for variable-thickness profile |
| CN106623421B (en) * | 2016-12-27 | 2019-03-15 | 上海宝钢型钢有限公司 | A kind of continuous producing method of Varying-thickness profile |
| CN106884131A (en) * | 2017-01-13 | 2017-06-23 | 浙江华达新型材料股份有限公司 | The technique and continuous hot dip galvanizing steel belt annealing furnace of a kind of steel plate secondary galvanization |
| CN111315911A (en) * | 2017-11-08 | 2020-06-19 | 安赛乐米塔尔公司 | Galvanized annealed steel sheet |
| CN113811627A (en) * | 2019-04-29 | 2021-12-17 | 法孚斯坦因公司 | Treatment line for the continuous treatment of metal strips with the dual purpose of producing annealed and dip-coated or uncoated strips, and corresponding cooling tower and method of switching from one configuration to another |
| CN112095061A (en) * | 2020-08-31 | 2020-12-18 | 广州Jfe钢板有限公司 | Production switching production channel and switching method for two different steel plate products |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Gangyan Xinye Engineering Design Co. Ltd. Assignor: China Gangyan Technology Group Limited|Xinye High-Tech Group Co. Ltd. Contract record no.: 2011990000152 Denomination of utility model: Dual-purpose furnace for continuous hot galvanizing and continuous annealing of steel strip Granted publication date: 20100623 License type: Exclusive License Record date: 20110315 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170120 Address after: 100081 Beijing Institute of technology, Haidian District Road, No. 76, 8-01-15 Patentee after: Beijing Gangyan Xinye Engineering Design Co. Ltd. Address before: 100081 Haidian District Institute of South Road, Beijing, No. 76 Patentee before: China Iron & Steel Research Institute Group Patentee before: Xinye High Technology Group Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |
|
| CX01 | Expiry of patent term |