CN108342552A - A kind of rail burning optimization on line device and technique - Google Patents
A kind of rail burning optimization on line device and technique Download PDFInfo
- Publication number
- CN108342552A CN108342552A CN201810476978.3A CN201810476978A CN108342552A CN 108342552 A CN108342552 A CN 108342552A CN 201810476978 A CN201810476978 A CN 201810476978A CN 108342552 A CN108342552 A CN 108342552A
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- CN
- China
- Prior art keywords
- surge tank
- technique
- technique surge
- rail
- heat
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
Abstract
The invention discloses a kind of rail burning optimization on line device and techniques, including wind system, spraying system and heat-treating machine, heat-treating machine includes upper technique surge tank, lower technique surge tank and side technique surge tank, upper technique surge tank, lower technique surge tank and side technique surge tank are respectively arranged at the top of rail pipeline, lower section and both sides, the lower face of upper technique surge tank, it is equipped with nozzle on the upper surface of lower technique surge tank and the inner side end of side technique surge tank, upper technique surge tank, lower technique surge tank and side technique surge tank are connect with wind system and spraying system.The temperature drop speed of heat-treatment of rail can effectively be controlled, hence it is evident that product qualification rate is improved, it is economic and environment-friendly, energy consumption is can obviously reduce, and meet power conservation requirement；Simple production process is applicable in, cost-effective, by accurately controlling quenching cooling, conveniently can steadily improve the performance of rail.
Description
Technical field
The present invention relates to technical field of metallurgical equipment, and in particular to a kind of rail burning optimization on line device and technique.
Background technology
Heat-treatment of rail technique is stringent to the cooling temperature drop requirement control of quenching, its temperature drop control technology difficulty is big, is always
The emphasis of heat-treatment of rail production concern.If hardening of rails cooling velocity is excessively slow, cannot obtain requirement quenching hardness and
Depth of hardening zone；And cooling velocity is too fast, and hardening crack and too deep quench-hardened case may be caused, and form austenite or martensite etc.
Harmful components.Meanwhile heat treatment process is unstable, may all cause the overproof deformation of rail.For what is used both at home and abroad at present
There are many defects in related online heat-treatment of rail technique, but with Urban Rail Transit Development, to heat-treated rail
Demand is urgent, there is an urgent need to develop a kind of control quenching type of cooling accurate, easy to control is gone out, come the realization heat- treated steel stablized
Rail high quality and mass production.
The prior art and problem：The rail burning optimization on line technology to come into operation both at home and abroad at present is broadly divided into four classes,
It is respectively：Water mist+compressed air is medium heat-treatment of rail technique；Using water+polymer as the heat-treatment of rail technique of medium；With
Water is that medium carries out heat-treatment of rail technique；Using air as the heat-treatment of rail technique of heat-treatment medium.It is heat treatment with air
The heat-treatment of rail technique of medium, technology are still in the stage of fumbling, and larger by such environmental effects；Water+polymer rail heat
Treatment process properties of product reach requirement, but the more complex production cost of daily maintenance is higher, and there are medium compositions to produce
The problems such as concentration changes in journey, and control difficulty is high；Hydrothermal treatment process, properties of product are unstable；Water mist+compressed air rail heat
Treatment process is compressed air heat treatment process improved process, compressed air mode after first water mist is taken, in water mist processing procedure
Middle temperature curve is difficult to control, and production operation is very difficult, it is difficult to reach expected requirement, there has been no success cases for this scheme at present
Example.Four kinds of techniques exist respectively insufficient.
It for the deficiency of four kinds of techniques in production, tests, is proposed at the novel online rail heat of one kind by numerous studies
Science and engineering skill：Air+water mist heat treatment process.
Invention content
The technical problem to be solved by the present invention is in view of the foregoing defects the prior art has, provide a kind of rail and exist
Line annealing device and technique can effectively control the temperature drop speed of heat-treatment of rail, hence it is evident that improve product qualification rate, economic ring
It protects, can obviously reduce energy consumption, and meet power conservation requirement；Simple production process is applicable in, cost-effective, is quenched by accurately controlling
Fire is cooling, conveniently can steadily improve the performance of rail.
Used technical solution is the present invention to solve above-mentioned technical problem：
A kind of rail burning optimization on line device, including wind system, spraying system and heat-treating machine, heat-treating machine include upper work
Skill surge tank, lower technique surge tank and side technique surge tank, upper technique surge tank, lower technique surge tank and side technique surge tank point
Be not set to the top, lower section and both sides of rail pipeline, the lower face of upper technique surge tank, lower technique surge tank upper surface
With nozzle, upper technique surge tank, lower technique surge tank and side technique surge tank are equipped on the inner side end of side technique surge tank
It is connect with wind system and spraying system.
According to above-mentioned technical proposal, wind system includes airflow pipe and wind turbine, and wind turbine passes through airflow pipe point
It is not connect with upper technique surge tank, lower technique surge tank and side technique surge tank, wind turbine is pressed with upper technique surge tank, lower technique
It is equipped with volume control damper on each airflow pipe connected between case and side technique surge tank.
According to above-mentioned technical proposal, spraying system includes pump group, atomising device and water conveyance conduit, the input terminal of pump group with
Atomising device connects, the output end of pump group by water conveyance conduit respectively with upper technique surge tank, lower technique surge tank and side work
Skill surge tank connects, on each water conveyance conduit being connect with upper technique surge tank, lower technique surge tank and side technique surge tank
It is equipped with water mist control valve.
According to above-mentioned technical proposal, side technique surge tank includes left technique surge tank and right technique surge tank, and left technique is equal
Pressure case and right technique surge tank are respectively arranged at the left and right side of rail pipeline.
According to above-mentioned technical proposal, nozzle is along the linear uniform dense arrangement of rail conveying direction.
A kind of rail online processing technique using devices discussed above includes the following steps：
1) wind system and spraying system are respectively upper technique surge tank, lower work by airflow pipe and water conveyance conduit
Skill surge tank and side technique surge tank conveying air and water mist；
2) air and water mist respectively enter is mixed in technique surge tank, lower technique surge tank and side technique surge tank
It closes, forms heat-treatment medium；
3) on technique surge tank, lower technique surge tank and side technique surge tank by nozzle to the rail on rail pipeline
Each technical face sprays heat-treatment medium.
According to above-mentioned technical proposal, in the step 1), the wind pressure in airflow pipe is 15000~30000Pa.
According to above-mentioned technical proposal, in the step 1), the water atomization granularity of water mist is less than in water conveyance conduit
15um。
According to above-mentioned technical proposal, in the step 3), the flow velocity for the heat-treatment medium that nozzle sprays is 132-260m/
s。
According to above-mentioned technical proposal, in the step 3), nozzle and the spacing of corresponding rail technical face be 15~
30mm。
The invention has the advantages that：
The present apparatus and simple for process, manipulation convenience can effectively control rail heat by the heat-treatment medium of air+water mist
The temperature drop speed of processing, makes rail indices reach professional standard, and significantly improve product qualification rate, at the heat in the present invention
Medium is managed, it is economic and environment-friendly, while energy consumption can be significantly reduced, and meet power conservation requirement；Simple production process is applicable in, online
Heat-treatment of rail technique is carried out using steel rail rolling waste heat, it is cost-effective, by accurately controlling quenching cooling, stabilization can be facilitated
Ground improves the performance of rail, it is made to meet the high quality requirement in high-speed railway, subway and various high-speed rail transportations, and developing is new
Market improves competitiveness, creates the economic benefit of bigger.
Description of the drawings
Fig. 1 is the schematic diagram of rail burning optimization on line device in the embodiment of the present invention；
The arrangement of nozzle and its injection stream of the heat-treatment medium sprayed when Fig. 2 is heat-treatment of rail in the embodiment of the present invention
The schematic diagram of field；
In figure, 1- water conveyance conduits, 2- airflow pipes, 3- water mist control valves, 4- volume control dampers, 5- water mist air
Mixed zone, 6- nozzles, 7- rail, the upper technique surge tanks of 8-, the left technique surge tanks of 9-, technique surge tank under 10-, the right techniques of 11-
Surge tank.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in referring to Fig.1~Fig. 2, the rail burning optimization on line device in one embodiment provided by the invention, including wind
System, spraying system and heat-treating machine, heat-treating machine include that upper technique surge tank 8, lower technique surge tank 10 and side technique are pressed
Case, upper technique surge tank 8, lower technique surge tank 10 and side technique surge tank are respectively arranged at the top of rail pipeline, lower section
And both sides, on the inner side end of the lower face of upper technique surge tank 8, the upper surface of lower technique surge tank 10 and side technique surge tank
It is equipped with nozzle 6, upper technique surge tank 8, lower technique surge tank 10 and side technique surge tank connect with wind system and spraying system
It connects；Wind system and spraying system are respectively that heat-treating machine provides the air and water mist for accordingly reaching requirement, air and water mist mixing,
After forming the mixing heat-treatment medium of corresponding requirements, it is equal to be redistributed to technique surge tank 8, lower technique surge tank 10 and side technique
It presses in case.
Further, wind system includes airflow pipe 2 and wind turbine, wind turbine by airflow pipe 2 respectively with it is upper
Technique surge tank 8, lower technique surge tank 10 are connected with side technique surge tank, wind turbine and upper technique surge tank 8, lower technique surge tank
It is equipped with volume control damper 4 on each airflow pipe 2 connected between 10 and side technique surge tank.
Further, spraying system includes pump group, atomising device and water conveyance conduit 1, and input terminal and the atomization of pump group fill
Set connection, the output end of pump group by water conveyance conduit 1 respectively with upper technique surge tank 8, lower technique surge tank 10 and side technique
Surge tank connects, each water conveyance conduit 1 being connect with upper technique surge tank 8, lower technique surge tank 10 and side technique surge tank
On be equipped with water mist control valve 3.
Further, it is respectively connected with water mist air on upper technique surge tank 8, lower technique surge tank 10 and side technique surge tank
Mixed zone 5, airflow pipe 2 and water conveyance conduit 1 pass through water mist Air mixing section 5 and upper technique surge tank 8, lower technique
Surge tank 10 is connected with side technique surge tank.
Further, airflow pipe 2, water conveyance conduit 1, upper technique surge tank 8, lower technique surge tank 10 and side work
Temperature sensor and pressure sensor are equipped on skill surge tank, the temperature and pressure for detecting medium, to control medium
Temperature and pressure, improve the exchange capability of heat of medium.
Further, airflow pipe 2 and water conveyance conduit 1 are equipped with heating system and cooling system, to heat treatment
Medium temperature accurately controls, and improves the thermal effectiveness of rail.
Further, wind turbine and pump group are respectively connected with frequency converter.
Further, technique surge tank in side includes left technique surge tank 9 and right technique surge tank 11, left technique surge tank 9
The left and right side of rail pipeline is respectively arranged at right technique surge tank 11.
Further, nozzle 6 is along the linear uniform dense arrangement of rail conveying direction.
A kind of rail online processing technique using devices discussed above includes the following steps：
1) wind system and spraying system respectively by airflow pipe 2 and water conveyance conduit 1 be upper technique surge tank 8,
Lower technique surge tank 10 and side technique surge tank conveying air and water mist；
2) air and water mist are respectively enterd in technique surge tank 8, lower technique surge tank 10 and side technique surge tank and are carried out
Mixing forms heat-treatment medium；
3) on technique surge tank 8, lower technique surge tank 10 and side technique surge tank by nozzle 6 on rail pipeline
7 each technical face of rail sprays heat-treatment medium.
Further, in the step 1), the wind pressure in airflow pipe 2 is 15000~30000Pa.
Further, in the step 1), the water atomization granularity of water mist is less than 15um in water conveyance conduit 1.
Further, in the step 3), the flow velocity for the heat-treatment medium that nozzle 6 sprays is 132-260m/s.
Further, in the step 3), nozzle 6 is 15~30mm with the spacing of 7 technical face of corresponding rail.
The operation principle of the present invention：
Using air+water mist thermal medium treatment process, effectively control heat treatment heat treatment process, media for heat exchange is effectively controlled
Amount, control heat treatment initial temperature.
Heat treatment start temperature is generally 690-780 DEG C, and temperature is substantially distributed between 280-350 DEG C when cold eventually, ideal
Cooling rate controls within the scope of 2~5 DEG C/s, can get the good rail of structure property 7.It is carried out with the type of cooling of air plus water mist
Rail burning optimization on line can accurately control cooling temperature.
Which is mainly made of three digest journals：Wind system (air system), spraying system, heat-treating machine.It is heat-treated work
Skill section is made of multigroup heat-treating machine, other mating pinch roller-ways, and the rail such as rail clamping device convey center support system, in addition match
Set each section of air pressure detection, rail temperature detecting system.
Wind system is made of wind turbine, volume control damper 4, motor, control system and conveyance conduit etc.：
Wind pressure：15000~30000Pa,
Spraying system is made of pump group, water mist control valve 3, atomising device, conveyance conduit etc.；Water atomization granularity：＜
15um, heat-treating machine are made of technique surge tank up and down and nozzle 6；Nozzle 6 is linear uniformly close along rail conveying direction
Collection arrangement, 6 medium coutroi velocity of nozzle：132-260m/s, the outlet of nozzle 6 and the control of rail process interplanar distance 15~
30mm；6 axis of nozzle is overlapped with rail technical face center line, and is arranged vertically with technical face.
Wind system is mixed with spraying system by pipeline, and blending agent, which is delivered to heat-treating machine, carries out flow and pressure
Power is distributed, and is required to carry out heat treatment process parameter matching according to varying environment.
1) according to the steel grades of heat-treated rail, feeding temperature and performance requirement, according to metal phase diagram and cooling curve
Show that the cooling velocity requirement of corresponding quenching, the medium distribution condition that Auto-matching is respectively heat-treated effectively control each stage
Heat treatment temperature drop rate；
2) wind system is effectively energy saving using frequency control according to overall process air quantity demand.Each section of heat-treating machine is according to medium
Dosage carries out sectional-regulated.
3) full-automatic high-pressure atomising device effectively controls blending water mist amount by each section of valve, is required according to each segment process
Match dosage.
4) each section of temperature detection and pressure detecting by being arranged on pipeline and equipment carries out timely control valve feedback,
Middle water mist major function：1) control medium temperature, 2) improve medium exchange capability of heat.
Since media for heat exchange ability is closely related with environmental factor, it is more that there are uncertain factors, such as air themperature, sky
Air humidity degree, device temperature etc..Therefore the work that steel rail in-line exhaust-heat heat treatment is very ideal is carried out using air+spraying system
Skill.
Above is only presently preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this,
Therefore according to equivalence changes made by scope of the present invention patent, still belong to protection scope of the present invention.
Claims (10)
1. a kind of rail burning optimization on line device, which is characterized in that including wind system, spraying system and heat-treating machine, heat treatment
Machine includes upper technique surge tank, lower technique surge tank and side technique surge tank, upper technique surge tank, lower technique surge tank and side work
Skill surge tank is respectively arranged at the top, lower section and both sides of rail pipeline, and the lower face of upper technique surge tank, lower technique are pressed
Nozzle, upper technique surge tank, lower technique surge tank and side are equipped on the upper surface of case and the inner side end of side technique surge tank
Technique surge tank is connect with wind system and spraying system.
2. rail burning optimization on line device according to claim 1, which is characterized in that wind system includes airflow pipe
And wind turbine, wind turbine are connect with upper technique surge tank, lower technique surge tank and side technique surge tank respectively by airflow pipe,
It is all provided on each airflow pipe connected between wind turbine and upper technique surge tank, lower technique surge tank and side technique surge tank
There is volume control damper.
3. rail burning optimization on line device according to claim 1, which is characterized in that spraying system includes pump group, atomization
Device and water conveyance conduit, the input terminal of pump group are connect with atomising device, the output end of pump group by water conveyance conduit respectively with
Upper technique surge tank, lower technique surge tank are connected with side technique surge tank, with upper technique surge tank, lower technique surge tank and side work
It is equipped with water mist control valve on each water conveyance conduit of skill surge tank connection.
4. rail burning optimization on line device according to claim 1, which is characterized in that side technique surge tank includes left technique
Surge tank and right technique surge tank, left technique surge tank and right technique surge tank are respectively arranged at the left side and the right side of rail pipeline
Side.
5. rail burning optimization on line device according to claim 1, which is characterized in that nozzle is in line along rail conveying direction
The uniform dense arrangement of property.
6. a kind of rail online processing technique using device described in claim 1, which is characterized in that include the following steps：
1) wind system and spraying system are respectively that upper technique surge tank, lower technique are equal by airflow pipe and water conveyance conduit
Press case and side technique surge tank conveying air and water mist；
2) air and water mist respectively enter is mixed in technique surge tank, lower technique surge tank and side technique surge tank, shape
At heat-treatment medium；
3) on technique surge tank, lower technique surge tank and side technique surge tank by nozzle to each work of rail on rail pipeline
Skill face sprays heat-treatment medium.
7. rail online processing technique according to claim 6, which is characterized in that in the step 1), air delivery
Wind pressure in pipeline is 15000~30000Pa.
8. rail online processing technique according to claim 6, which is characterized in that in the step 1), water delivery pipe
The water atomization granularity of water mist is less than 15um in road.
9. rail online processing technique according to claim 6, which is characterized in that in the step 3), nozzle sprays
Heat-treatment medium flow velocity be 132-260m/s.
10. rail online processing technique according to claim 6, which is characterized in that in the step 3), nozzle and phase
The spacing for the rail technical face answered is 15~30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476978.3A CN108342552A (en) | 2018-05-18 | 2018-05-18 | A kind of rail burning optimization on line device and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476978.3A CN108342552A (en) | 2018-05-18 | 2018-05-18 | A kind of rail burning optimization on line device and technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108342552A true CN108342552A (en) | 2018-07-31 |
Family
ID=62956347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810476978.3A Pending CN108342552A (en) | 2018-05-18 | 2018-05-18 | A kind of rail burning optimization on line device and technique |
Country Status (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08295938A (en) * | 1995-04-27 | 1996-11-12 | Nkk Corp | Method for cooling high temperature rail and device therefor |
| CN102899464A (en) * | 2012-09-19 | 2013-01-30 | 中国重型机械研究院股份公司 | Premixed spray quenching system for steel rail |
| JP2015066554A (en) * | 2013-09-26 | 2015-04-13 | Ｊｆｅスチール株式会社 | Manufacturing apparatus of rail |
| CN107130098A (en) * | 2017-06-14 | 2017-09-05 | 武汉钢铁有限公司 | Heat-treatment of rail device and heat treatment method |
| CN107400764A (en) * | 2017-09-19 | 2017-11-28 | 辽宁科技大学 | A kind of rail entirety air-blast quenching experimental provision |
-
2018
- 2018-05-18 CN CN201810476978.3A patent/CN108342552A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08295938A (en) * | 1995-04-27 | 1996-11-12 | Nkk Corp | Method for cooling high temperature rail and device therefor |
| CN102899464A (en) * | 2012-09-19 | 2013-01-30 | 中国重型机械研究院股份公司 | Premixed spray quenching system for steel rail |
| JP2015066554A (en) * | 2013-09-26 | 2015-04-13 | Ｊｆｅスチール株式会社 | Manufacturing apparatus of rail |
| CN107130098A (en) * | 2017-06-14 | 2017-09-05 | 武汉钢铁有限公司 | Heat-treatment of rail device and heat treatment method |
| CN107400764A (en) * | 2017-09-19 | 2017-11-28 | 辽宁科技大学 | A kind of rail entirety air-blast quenching experimental provision |
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Application publication date: 20180731 |
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