CN101984091A - Online time-control temperature-control water quenching device - Google Patents
Online time-control temperature-control water quenching device Download PDFInfo
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- CN101984091A CN101984091A CN 201010562008 CN201010562008A CN101984091A CN 101984091 A CN101984091 A CN 101984091A CN 201010562008 CN201010562008 CN 201010562008 CN 201010562008 A CN201010562008 A CN 201010562008A CN 101984091 A CN101984091 A CN 101984091A
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Abstract
The invention provides an online time-control temperature-control water quenching device in the technical field of steel and iron manufacture. The device comprises a rolling mill, a production line consisting of cooling units and roller ways, wherein a plurality of roller ways are alternately arranged between the rolling mill and the cooling units and among the cooling units and are responsible for conveying steel materials; and a plurality of cooling units are arranged on the rear end of the rolling mill, and are arranged in the distance of 2 to 5 roller way intervals. In the device, each cooling unit can realize the switching of online water cooling and air cooling, namely start of the cooling units is water cooling, and non-start of the cooling units is air cooling. The device can set the cooling state of each cooling unit according to the requirement of steel quenching process, and provides corresponding cooling strength for steel quenching, thereby avoiding cracking due to extremely fast cooling of the steel, and achieving the aim of acquiring expected organization and performance.
Description
Technical field
What the present invention relates to is the device in a kind of iron and steel manufacturing technology field, specifically is to wear the water quenching refrigerating unit in line traffic control time control temperature after a kind of steel roll.
Background technology
Control time control warm water-sky replaces quench cooled and is meant steel are heated to A
C3Or A
C1The above a certain temperature of point and keep certain hour after, be heat-eliminating medium with the water and air, adopt water-cooled and air cooling alternative mode that steel are controlled (during control) cooling time and steel cooling process controlled the quench cooled process of (temperature control).With steel in water, pass wear water and be cooled to the control that feature regulates the cooling process in conjunction with air cooling fast the time temperature control cooling technology when being called as control temperature control wear the water quenching cooling technology.The cooling intensity of wearing water quenching is bigger than the cooling intensity that common jet of water quenches, and the water quenching cooling is worn in employing can obtain martensite or the bainite structure that the jet of water quench cooled is difficult to obtain.To wear the water quenching cooling be to obtain one of effective way of high strength tissue (martensite or bainite) to temperature control when therefore, adopting control.
Along with raising, roll the back direct-on-line at steel and carry out quench cooled and handle and to be adopted by many iron and steel enterprises to the ferrous materials performance requriements.Quenching technique after rolling has been carried out many-sided research, has many new technology to be applied among the engineering.But the existing domestic back quench cooled of rolling adopts water-jet technology more, is more difficult to get high-intensity martensite or bainite structure.
Through the prior art literature search is found, Chinese patent application 200910197056.x, put down in writing a kind of " online water-cooling method and the equipment worn ", this technology adopts wears the cooling intensity of water quenching refrigerative cooling intensity greater than the jet of water quench cooled, therefore can obtain the martensite or the bainite structure that adopt the jet of water quench cooled to be difficult to obtain, be fit to be applied to steel and roll the high strength tissue (martensite or bainite) that back press quenching cooling obtains expection, the quench cooled mode of this technology is for rolling back one-part form quench cooled.But temperature control obtains the quench cooled process of intended tissue when requiring to realize to roll the back control, adopts to roll back one-part form quench cooled mode and just can't meet the demands.
Summary of the invention
The present invention is directed to the prior art above shortcomings, provide a kind of and wear the water quenching refrigerating unit in line traffic control time control temperature, promptly behind milling train, be disposed in order several cooling units along the roller-way direction, each cooling unit all can be realized online wear water cooling and the conversion of air cooling two states, be that cooling unit is opened to wearing water cooling, the non-unlatching of cooling unit is an air cooling.For the steel that satisfy the different thickness differing materials to cooling off each stage cooling intensity, the requirement of cooling time, set the state of cooling of each cooling unit according to the requirement of steel quench cooled technology, for the steel quench cooled provides corresponding cooling intensity, promptly avoid steel because of cooling off the too fast cracking that causes, also reached the purpose of obtaining intended tissue and performance.
The present invention is achieved through the following technical solutions, the present invention includes: the production line that milling train, cooling unit and roller-way are formed, wherein: some roller-ways uniformly-spaced are arranged between milling train and the cooling unit and between cooling unit and the cooling unit and be responsible for to transmit steel, and several cooling units are arranged between the rear end of milling train and each cooling unit distance at 2-5 roller-way interval at interval.
Described cooling unit comprises: roller-way, quenching tank, supply flume and the waterflood pump system of band mechanical seal, wherein: quenching tank places on the supply flume, the roller-way of some band mechanical seals places on the supply flume and crosses quenching tank and along the equidistant arrangement of steel direction of motion, have opening for feed and discharge port along steel direction of motion in the cell body both sides of quenching tank, the waterflood pump system is connected with supply flume with quenching tank respectively and draws water from supply flume and inject quenching tank, and is flowed out by the opening for feed of quenching tank both sides and discharge port and enter in the supply flume; When the water yield of injecting in quenching tank when the waterflood pump system is enough big, liquid level in the quenching tank is higher than the height of the roller-way of being with mechanical seal, thereby realize that it is to carry out under the submerged state that steel are with the motion on the roller-way of mechanical seal, promptly realizes wearing the water quenching process in quenching tank in water.
The roller-way of described roller-way and band mechanical seal is for being fit to the roller-way of transmission all kinds shaped steel, steel plate, band steel, square steel and round steel.The cell body position that the roller-way of band mechanical seal crosses quenching tank is provided with mechanically-sealing apparatus, is implemented in the sealing between the cell body of the roller-way of wearing band mechanical seal in the water quenching process and quenching tank.
Described quenching tank is the pentahedron structure that rectangle has end uncovered, has the hole of stretching out of roller shaft on the cell body biside plate of the roller-way of belt mechanical seal.
Described supply flume is the pentahedron structure that rectangle has end uncovered, and its effect is for quenching tank water supply and collects the container of quenching tank overflow water outlet.
Described waterflood pump system is made up of pump, valve, pipeline, and effect is that the water in the supply flume is injected in the quenching tank.
The present invention realizes cooling by following steps: temperature control is worn water quenching cooling production line when entering the control of being made up of several cooling units under the driving of steel at roller-way after rolling, and the quantity of cooling unit and each cooling unit are to carry out to wear water function or the air cooling function is definite according to the quench cooled technology of steel needs; In order to obtain wideer cooling intensity scope, also can on cooling unit, increase water spray (spraying) function, promptly open and wear water, water spray functions such as (sprayings) according to the requirement of cooling power.
The product that the present invention is directed to is to liking all kinds of steel, and it can be all kinds shaped steel, steel plate, band steel, square steel and round steel.
Equipment of the present invention be specially adapted to many kinds material and many descriptions steel when line traffic control and the temperature control quench cooled, the purpose that a plurality of cooling units are set is that the quench cooled technology according to the steel needs is provided with the cooling unit of unlatching and the cooling unit of non-unlatching along production line, thus realize steel when line traffic control and the temperature control quench cooled.
Present device also can be used for the off-line quench cooled and handle, be about to steel and be heated to austenite one phase district or ferrite and austenitic two-phase region or cementite and austenitic two-phase region, by to cooling intensity (wearing water, water spray (the spraying)) setting of each cooling unit and the conversion of as air-cooled condition, realize Q-P-T technology (quenching-carbon distribution-tempering process), TRIP steel technology, bainitic steel technology and dual phase steel technology etc. then.
Compared with prior art, the present invention can't satisfy in the present back one-part form quench cooled mode of rolling to propose needing after rolling under the different cooling intensity requirement of the multistage situation, especially to handling the fast cold quenching cooling of the higher high-strength steel of back performance requriements.Adopt method of the present invention rolling the directly complicated quench cooled technology of realization of back.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of cooling unit.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, present embodiment comprises: the production line that milling train 1, cooling unit 2 and roller-way 3 are formed, wherein: roller-way 3 is uniformly-spaced being arranged between milling train 1 and the cooling unit 2 and between cooling unit 2 and the cooling unit 2 along production line, roller-way 3 is responsible for transmitting steel and is moved along production line, in milling train 1 back n cooling unit 2 is set, 2-5 the roller-way in interval distance at interval between each cooling unit 2 is to guarantee two discharge port and opening for feed drainings smoothly between the cooling unit.
As shown in Figure 2, described cooling unit 2 comprises: the roller-way 4 of band mechanical seal, quenching tank 5, supply flume 6, waterflood pump system 7, wherein: quenching tank 5 places on the supply flume 6, the roller-way 4 of band mechanical seal places and crosses quenching tank 5 on the supply flume 6 and along the equidistant arrangement of steel direction of motion, the cell body both sides of this quenching tank have opening for feed and discharge port along the roller-way direction, quenching tank 5 injects in waterflood pump system 7 by drawing water in the supply flume 6, when the water yield of injecting in quenching tank 5 when waterflood pump system 7 is enough big, the liquid level that will occur in the quenching tank 5 is higher than certain altitude above the roller-way 4 of being with mechanical seal, thereby the motion on the roller-way 4 of the band mechanical seal of realization steel in quenching tank 5 is to carry out under the submerged state in water, promptly realizes wearing the water quenching process.The moving process of water is by waterflood pump system 7 water in the supply flume 6 to be injected in the quenching tank 5, and then is entered within the supply flume 6 by the discharge port and the opening for feed outflow of quenching tank both sides.
This device carries out cooling work in the following manner: according to the Q-P-T processing requirement 9 cooling units are divided into three chunks, be about to the 1st to the 4th cooling unit in milling train back and be defined as first chunk, this chunk is set to opened condition, promptly implement to wear water cooling at this chunk, realize the quenching process of steel, the temperature that reaches time top layer on this process steel top layer is chilled to martensite and begins below the transition temperature (Ms); The 5th to the 7th cooling unit is defined as second chunk, and this chunk is set to non-opened condition, promptly implements process air cooler at this chunk, on this process steel top layer and subsurface temperature go back up to more than the Ms certain temperature and carry out carbon and distribute; The 8th and the 9th cooling unit are defined as the 3rd chunk, and this chunk is set to opened condition, promptly implements to wear the water process at this chunk, is reduced to a certain temperature more than the Ms in this process steel temperature, thereby realizes tempering.
Aforesaid method obtains the martensitic steel that microtexture is martensite+retained austenite+carbide.
If steel are heated to ferrite and austenite two-phase region insulation for some time, and then carry out Q-P-T and handle, obtain the dual phase steel that microtexture is ferrite+martensite+retained austenite+carbide.
Method of the present invention is by in the milling train back several cooling units being set, determine quench cooled technology at steel material and dimensional change, the chunk of forming by cooling unit according to the processing requirement setting then, the purpose of temperature control quench cooled when realizing the control of steel by control to the unlatching (wearing water quenching) of chunk and non-unlatching (air cooling).
Embodiment 2
The object of this instance processes product is the steel of certain composition of suitable bainite treatment process.The present invention is achieved by the following technical solutions, and device structure of the present invention is that 12 cooling units 2 are set in milling train 1 back,
Require 12 cooling units are divided into 6 chunks according to the bainite treatment process, be about to the 1st to the 3rd cooling unit in milling train back and be defined as first chunk, this chunk is set to opened condition, promptly implement to wear water cooling, realize that steel top layer and subsurface temperature are reduced to bainite and begin to begin the above temperature range of transition temperature (Ms) with martensite below the transition temperature (Bs) at this chunk; The 4th and the 5th cooling unit are defined as second chunk, and this chunk is set to non-opened condition, promptly implements process air cooler at this chunk, near this process steel top layer and subsurface temperature go back up to the Bs temperature; The 6th cooling unit is defined as the 3rd chunk, this chunk is set to opened condition, promptly implement to wear the water process at this chunk, be reduced to martensite at this process steel top layer and subsurface temperature and begin near the transition temperature (Ms), begin the following and martensite of transition temperature (Bs) and begin the above temperature range generation bainite transformation of transition temperature (Ms) and be reduced to bainite near the internal layer of subsurface; The 7th and the 8th cooling unit are defined as the 4th chunk, this chunk is set to non-opened condition, promptly implement process air cooler, these process steel begin transition temperature (Bs) to bainite near the internal layer temperature recovery of subsurface near or above a certain temperature at this chunk; The 9th cooling unit is defined as the 5th chunk, this chunk is set to opened condition, promptly implement to wear the water process, more be reduced to bainite and begin transition temperature (Bs) below to begin temperature range generation bainite transformation more than the transition temperature (Ms) in the zone of internal layer with martensite at these process steel at this chunk; The the 10th to the 12nd cooling unit is defined as the 6th chunk, this chunk is set to open the water spray state, promptly implement the water spray process of cooling at this chunk, these process steel more internal layer and heart portion be reduced to bainite and begin below the transition temperature (Bs) and martensite begins temperature range generation bainite transformation more than the transition temperature (Ms), the microtexture that this technology obtains is bainite+retained austenite.
The mode of method of the present invention by several cooling units being set and dividing several chunks with cooling unit in the milling train back is according to the transition process of processing requirement realization bainite.
Embodiment 3
The treating product object of this example is phase change induction plasticity (TRIP) steel of certain composition.Steel are heated to ferrite and austenite two-phase region insulation for some time, and then carry out the bainite treatment process among the embodiment 2.The microtexture that this technology obtains is ferrite+bainite+retained austenite.
Claims (5)
1. wear the water quenching refrigerating unit in line traffic control time control temperature for one kind, it is characterized in that, comprise: the production line that milling train, cooling unit and roller-way are formed, wherein: steel are uniformly-spaced being arranged and be responsible for to be transmitted to some roller-ways between milling train and the cooling unit and between cooling unit and the cooling unit, and several cooling units are arranged between the rear end of milling train and each cooling unit distance at 2-5 roller-way interval at interval.
2. according to claim 1ly wear the water quenching refrigerating unit in line traffic control time control temperature, it is characterized in that, described cooling unit comprises: the roller-way of band mechanical seal, quenching tank, supply flume and waterflood pump system, wherein: quenching tank places on the supply flume, the roller-way of some band mechanical seals places on the supply flume and crosses quenching tank and along the equidistant arrangement of steel direction of motion, the cell body both sides of quenching tank have opening for feed and discharge port along steel direction of motion, the waterflood pump system is connected with supply flume and draws water from supply flume with quenching tank respectively and is injected in the quenching tank, and is flowed out by the opening for feed of quenching tank both sides and discharge port and enter in the supply flume; When the water yield of injecting in quenching tank when the waterflood pump system is enough big, liquid level in the quenching tank is higher than the height of the roller-way of being with mechanical seal, thereby realize that it is to carry out under the submerged state that steel are with the motion on the roller-way of mechanical seal, promptly realizes wearing the water quenching process in quenching tank in water.
3. according to claim 2ly wear the water quenching refrigerating unit, it is characterized in that the cell body position that the roller-way of described band mechanical seal crosses quenching tank is provided with mechanically-sealing apparatus in line traffic control time control temperature.
4. according to claim 2ly wear the water quenching refrigerating unit, it is characterized in that described quenching tank is the pentahedron structure that rectangle has end uncovered, on the cell body biside plate of the roller-way of belt mechanical seal, have the hole of stretching out of roller shaft in line traffic control time control temperature.
5. according to claim 2ly wear the water quenching refrigerating unit, it is characterized in that described supply flume is the pentahedron structure that rectangle has end uncovered in line traffic control time control temperature.
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| CN 201010562008 CN101984091A (en) | 2010-11-26 | 2010-11-26 | Online time-control temperature-control water quenching device |
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| CN 201010562008 CN101984091A (en) | 2010-11-26 | 2010-11-26 | Online time-control temperature-control water quenching device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074478A (en) * | 2013-01-16 | 2013-05-01 | 江西樟树市福铃内燃机配件有限公司 | 'Two-time temperature control and one-time time control quenching' heat treatment process for cast alloy valve seat rings |
| CN103786063A (en) * | 2012-10-29 | 2014-05-14 | 海门黄海创业园服务有限公司 | Rapid cooling device |
| WO2015043061A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| WO2015043060A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| WO2015043059A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| EP3050991A4 (en) * | 2013-09-26 | 2017-04-19 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| CN107164622A (en) * | 2017-06-06 | 2017-09-15 | 广州广铝铝业科技有限公司 | Press quenching equipment and product production line |
| CN107245561A (en) * | 2017-05-11 | 2017-10-13 | 上海泽奇炉业有限公司 | The water sky alternating time quenching cooling device and method of a kind of HI-chrome cast iron for grinding balls |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786063A (en) * | 2012-10-29 | 2014-05-14 | 海门黄海创业园服务有限公司 | Rapid cooling device |
| CN103074478A (en) * | 2013-01-16 | 2013-05-01 | 江西樟树市福铃内燃机配件有限公司 | 'Two-time temperature control and one-time time control quenching' heat treatment process for cast alloy valve seat rings |
| EP3050994A4 (en) * | 2013-09-26 | 2017-04-05 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| WO2015043060A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| WO2015043059A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| EP3050994A1 (en) * | 2013-09-26 | 2016-08-03 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| WO2015043061A1 (en) * | 2013-09-26 | 2015-04-02 | 北大方正集团有限公司 | Non-quenched and tempered steel and manufacturing method therefor |
| EP3050991A4 (en) * | 2013-09-26 | 2017-04-19 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| EP3050995A4 (en) * | 2013-09-26 | 2017-04-19 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| EP3050993A4 (en) * | 2013-09-26 | 2017-04-19 | Peking University Founder Group Co., Ltd | Non-quenched and tempered steel and manufacturing method therefor |
| CN107245561A (en) * | 2017-05-11 | 2017-10-13 | 上海泽奇炉业有限公司 | The water sky alternating time quenching cooling device and method of a kind of HI-chrome cast iron for grinding balls |
| CN107245561B (en) * | 2017-05-11 | 2019-01-04 | 上海泽奇炉业有限公司 | A kind of water of HI-chrome cast iron for grinding balls-sky alternately time quenching cooling device and method |
| CN107164622A (en) * | 2017-06-06 | 2017-09-15 | 广州广铝铝业科技有限公司 | Press quenching equipment and product production line |
| CN107164622B (en) * | 2017-06-06 | 2019-08-16 | 广东广铝铝型材有限公司 | Press quenching equipment and product production line |
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Application publication date: 20110309 |