CN207062340U - A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail - Google Patents
A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail Download PDFInfo
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- CN207062340U CN207062340U CN201720734999.1U CN201720734999U CN207062340U CN 207062340 U CN207062340 U CN 207062340U CN 201720734999 U CN201720734999 U CN 201720734999U CN 207062340 U CN207062340 U CN 207062340U
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- rail
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- compressed air
- heat treatment
- positioning guide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application provides a kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail, including sending rail mechanism (1), the first positioning guide mechanism (2), compressed air cooling mechanism (3), the second positioning guide mechanism (4) and sensing heating mechanism (5), it is characterized in that, rail mechanism (1) is sent to connect the first positioning guide mechanism (2), first positioning guide mechanism (2) connection compressed air cooling mechanism (3), compressed air cooling mechanism (3) are connected by the second positioning guide mechanism (4) with sensing heating mechanism (5).The utility model improves the hardness of AT rail heel end forging and stamping section rail head, reduces softening sector width, avoids the too wide rail head softened zone easily occurred in the prior art, heel end heat-treatment zone and untreated area's intersection and the risk of martensitic structure easily occurs.
Description
Technical field
The manufacture field of railway switch enterprise AT rail is the utility model is related to, especially a kind of burning optimization on line AT rail
Heel end forging and stamping section heat treatment mechanism.
Background technology
Track switch is the important component of railway, and AT tongues are one of important composition parts of railway switch.AT tongues are to utilize
What the AT rail that steel mill provides was process.AT rail is dwarf forms special section frog, and section is asymmetric, and profile height will
It is short in common rail.AT rail one end of asymmetric section forms the tip of AT tongues by machining, and the other end passes through heat
The method of forging and stamping is transformed into the common rail of symmetric cross-section so as to be connected with common rail, makes AT rail section transition by hot forging pressure
End regions into common rail are referred to as AT rails heel end forging and stamping section.
The implementation process of AT rails heel end forging and stamping section is to carry out heel end resistance heating to the heel end of AT rails in railroad turnout enterprise
Stove heat or Frequency Induction Heating, length about 0.85m, then using super large forging press hot forging pressure, using mould molding into rail
Section.Due to the complexity of section, it is often necessary to which multimode is suppressed, it is sometimes desirable to heating for multiple times.In order to realize hot forging pressure, AT rails
Heel end heating temperature be up to more than 1100 DEG C, cause AT rails heel end forging and stamping section coarse grains so that toughness significantly under
Drop.Need be heat-treated to recover its toughness.
Hot rolling AT rail is that air cooling obtains after steel mill's hot rolling, and burning optimization on line AT rail is steel mill using rolling waste heat
And accelerating the method for cooling to obtain, the intensity of burning optimization on line AT rail carried than the AT rail intensity of common hot rolling and air cooling
It is high.Burning optimization on line AT rail heel end forges and presses section in addition to coarse grains make toughness decline, and another problem is heel end forging and stamping section
Intensity be greatly lowered, far below burning optimization on line AT rail mother metals.It is real that heat treatment is thus carried out to burning optimization on line AT rails
The raising of existing toughness and 2 purposes of raising of intensity.
Existing AT rail heel end forges and presses heat treatment mode：
Hot rolling AT rail is that air cooling obtains after steel mill's hot rolling, and the intensity of rail head is relatively low, it is impossible to reaches the actual use of AT rails
Requirement.Hot rolling AT rails heel end forging and stamping section heat treatment method be：Batch-type furnace or Medium frequency induction stove heat, then air cooling, is carried out
Normalized treatment, the AT heel ends forging and stamping full face toughness of section is improved, then AT rail is not forged and pressed by machining another
AT tongues are processed into one end, finally carry out full heat treatment to the rail head of tongue using tongue total length rail head Equipment for Heating Processing, make
The rail head hardness and intensity of AT tongue total lengths are improved, so as to play the purpose for extending tongue service life.
Burning optimization on line AT rail due to total length steel mill using roll waste heat and accelerate cooling be heat-treated,
The intensity of rail head has reached the actual operation requirements of AT rails, it is only necessary to heel end forging and stamping section carry out local heat treatmet without
Full heat treatment is carried out as hot rolling AT rail.The heat treatment of section thus is forged and pressed to burning optimization on line AT steel rail ends at present
Method is：Batch-type furnace or Medium frequency induction stove heat, then air cooling, carries out normalized treatment, improves the toughness of forging and stamping section；Then pass through
The other end that AT rail does not forge and press is processed into AT tongues by machining；Finally using tongue total length rail head Equipment for Heating Processing to AT rails
Heel end forging and stamping section carries out rail head local continuous heat treatment, stops after rail head thermal treatment zone covers heel end forging and stamping section.
The current Technological Experiment Scheme of burning optimization on line AT rail is primarily present 2 problems, and 1) utilize tongue total length rail head
Equipment for Heating Processing to AT rails carry out local continuous heat treatment when, continuous heat stop position, thermal treatment zone with heat at
There are multiple softened zones in reason region, softening sector width is very big, and so wide softened zone makes AT rails under the rolling of wheel
Cause the AT rails position is low to collapse, influence the ride comfort and security of train operation.2) continuous heat region and non-heat-treatment zone
The position that domain has a common boundary, due to the heat-absorbing action of cold rail, causes juncture area martensitic structure occur, causes the position to go out too early
Now peel off chip off-falling and even result in the fractures of AT rails so as to influence the safe for operation of train.
Utility model content
To overcome the defects of existing, the utility model proposes a kind of forging and stamping section heat treatment of the heel end of burning optimization on line AT rail
Mechanism.
A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail, including send rail mechanism, the first positioning and guiding
Mechanism, compressed air cooling mechanism, the second positioning guide mechanism and sensing heating mechanism, it is characterised in that send rail mechanism to connect first
Positioning guide mechanism, the first positioning guide mechanism connection compressed air cooling mechanism, compressed air cooling mechanism pass through the second positioning and guiding machine
Structure is connected with sensing heating mechanism.
Wherein, it is described to send rail mechanism to include the first flange of rail hold-down devices and the second flange of rail hold-down devices, wherein, described first
Flange of rail hold-down devices and the second flange of rail hold-down devices are by sending rail mechanism cylinder to drive.
Wherein, first positioning guide mechanism and the second positioning guide mechanism include rail head top surface deflector roll and 2 respectively
Side roller.
Wherein, in the compressed air cooling mechanism compressed air cooling device by 1 rail head air jetting device, the first trackside air jetting device and second
Trackside air jetting device forms, wherein, compressed air cooling device is connected with the slideway of level, the first cooler cylinder and the second cooler cylinder
Air jetting device is driven to be horizontally slipped on slideway respectively.
Wherein, the outside of the sensing heating mechanism heats coil sets silicon steel sheet, and the coil bottom of heating coil is set
Sensing heating capacitive means, wherein, induction heating apparatus drives the regulation for realizing high and low position by motor.
Wherein, the heat treatment mechanism also include intermediate frequency power supply and controlling organization, operating console, infrared thermometer,
Hydrologic cycle cooling system, compressed air supply and pipe-line system.
The utility model carries out sensing heating, Ran Houxun using special tunneling boring induction heating apparatus to heel end forging and stamping section
Speed carries out spray compressed air to the rail head for forging and pressing section by the compressed air cooling device with closing device and is heat-treated.Pass through this side
The heat treatment of formula, the coarse grain caused by high temperature forges and presses when not only having refined the forging and stamping of AT rails heel end, so as to improve toughness；
And compressed air cooling improves the hardness of AT rails heel end forging and stamping section rail head and intensity, has reached and has not forged and pressed burning optimization on line AT steel
The Proper Match of rail, while it is smaller to soften sector width, avoids low problem of collapsing in softening sector width use caused greatly.
The utility model improves the hardness and tunneling boring toughness of burning optimization on line AT rail heel end forging and stamping section rail head, reduces
Softening sector width, avoids that the rail head softened zone that easily occurs in the prior art is wide, heat-treatment zone has a common boundary with untreated area
Easily there is the risk of martensitic structure in place.
Brief description of the drawings
Fig. 1 is that burning optimization on line AT rails heel end forges and presses section progress tunneling boring Frequency Induction Heating schematic diagram.
Fig. 2 is that burning optimization on line AT rails heel end is forged and pressed after section heating terminates in the progress compressed air cooling signal of compressed air cooling mechanism
Figure.
Fig. 3 be compressed air cooling device work when (close up) and power cut-off after (separated) schematic diagram.
Fig. 4 is sensing heating structural scheme of mechanism.
Embodiment
Below in conjunction with the accompanying drawings with specific embodiment to a kind of heel end of burning optimization on line AT rail provided by the utility model
Forging and stamping section heat treatment mechanism is described in detail.
Fig. 1 and Fig. 2 show a kind of burning optimization on line AT rail heel end forging and stamping section heat treatment mechanism, including send rail mechanism 1,
First positioning guide mechanism 2, compressed air cooling mechanism 3, the second positioning guide mechanism 4 and sensing heating mechanism 5, send rail mechanism 1 to connect
The first positioning guide mechanism 2 is connect, the first positioning guide mechanism 2 connection compressed air cooling mechanism 3, compressed air cooling mechanism 3 passes through second
Positioning guide mechanism 4 is connected with sensing heating mechanism 5.
Rail mechanism 1 is sent to include the first flange of rail hold-down devices 11 and the second flange of rail hold-down devices 12, wherein, first flange of rail
The flange of rail hold-down devices 12 of hold-down devices 11 and second are by sending rail mechanism cylinder to drive.
First positioning guide mechanism 2 and the second positioning guide mechanism 4 include rail head top surface deflector roll and 2 side rollers respectively.
The function of sending rail mechanism 1 is to ensure the traveling of AT rail 7, including rail moves forward and backward, and the speed of traveling exists
Operating desk can control.Because the rail head shape that AT rails heel end forges and presses section 6 and AT rail 7 is identical, and point-blank,
Thus the traveling of AT rail is stood upside down traveling, ensure that the smooth traveling of AT rail 7.In order to prevent the heel end of AT rail from forging
Generation overturning breaks mechanism after pressure section enters compressed air cooling mechanism and sensing heating mechanism, when AT rails heel end forging and stamping section 6 is advanced
Cross and send the flange of rail screwdown gear of rail mechanism to fall after the second flange of rail hold-down devices to push down flange of rail face, ensure that the steady of AT rail
Determine traveling, the AT rail for avoiding handstand is overturned so as to break compressed air cooling mechanism and sensing heating mechanism.
Positioning guide mechanism is made up of rail head top surface deflector roll and 2 side rollers, ensures that rail accurately enters compressed air cooling machine
Structure and sensing heating mechanism, not only avoid the collision of AT rail and mechanism, and ensure that AT rail and these mechanisms are kept
Suitable and fixed gap.
Shown in Fig. 3, compressed air cooling device is by 1 rail head air jetting device 31, the first rail head side air jetting device in compressed air cooling mechanism 3
32 and second rail head side air jetting device 33 form, wherein, compressed air cooling device with level slideway be connected, the first cooler cylinder 34
Drive air jetting device to be horizontally slipped on slideway respectively with the second cooler cylinder 35, realize the separated of air jetting device and close up.Need
When carrying out compressed air cooling to AT rail 7, cylinder drives rail head and rail head side air jetting device to close up, and AT rails rail head spray air-cooled
But, heat treatment is completed.When air jetting device does not work, cylinder drives air jetting device to slip off both sides to the left and right, has AT rail travelings bigger
Space, prevent AT rail collision compressed air cooling device nozzle.There is positioner on the compressed air cooling device of rail head side, air jetting device closes
When holding together with rail head contacts side surfaces and stop, so as to ensure that air jetting device and rail head side keep fixed gap.
Shown in Fig. 4, the outside of the heating coil of sensing heating mechanism 5 sets silicon steel sheet, and the coil bottom of heating coil is set
Sensing heating capacitive means, wherein, induction heating apparatus is driven by motor, realizes the upper-lower height of induction heating apparatus
Regulation.The length of load coil ensures that covering AT rail heel end forging and stamping section and its heat affected area, the outside of heating coil add
Silicon steel sheet, the efficiency of sensing heating is not only increased, reduce the consumption of electric energy, while reduce the leakage of electromagnetic radiation, subtracted
The pollution to working environment and the injury of operating personnel's body are lacked.Filled below the coil of heating coil for the electric capacity of sensing heating
Put, coil and electric capacity it is in small distance, reduce electrical loss.Induction heating apparatus has installed motor additional, ensure that sensing adds
Heat coil can carry out upper and lower position adjustment, adapt to requirement of the rail to coil position of different rail types.
Heat treatment mechanism also includes intermediate frequency power supply and controlling organization, operating console, infrared radiation thermometer, water circulation cooling system
System, compressed air supply and pipe-line system.
The method of work of the heat treatment mechanism of burning optimization on line AT rail heel end forging and stamping section, it is characterised in that
1) AT rail, which stands upside down to hang in, send rail mechanism, and in the case where console control send the motor of rail mechanism to drive, AT rail stands upside down
Traveling forward；
2) after the heel end forging and stamping section of AT rail is passed by send the flange of rail hold-down devices of rail mechanism completely, controlled in console
The cylinder of flange of rail screwdown gear, flange of rail screwdown gear is compressed the flange of rail of the non-swaged sections of AT rails, continue traveling AT rail forward；
3) the heel end forging and stamping section of AT steel steel and the located guiding mechanism of AT rails enter compressed air cooling device, (now spray air-cooled
But device is in state of dividing right and left, and avoids AT rails and is collided with what air jetting device was likely to occur), AT rails heel end forging and stamping section and AT rails warp
Positioning guide mechanism enters sensing heating mechanism；
(heating region of heating coil must cover heel end forging and stamping after AT rails heel end forges and presses section completely into heating coil
Heating region and its heat affected area), stop sending the rail that send of rail mechanism, AT rails stop；
4) start intermediate frequency power supply, sensing heating is carried out to AT rails heel end forging and stamping section, by induction heating apparatus
Temperature measurer detect that AT rails heel end forges and presses section rail head to after design temperature, intermediate frequency power supply is automatically stopped heating；
5) AT rail is retreated, and when traveling to AT rails heel end forging and stamping section completely into after compressed air cooling mechanism, rail is walked
Row stops；
6) cylinder of automatic start compressed air cooling mechanism or so translation mechanism, compressed air cooling device is driven to close up, compressed air cooling
Device stops closing action, automatic start compressed air cooling after positioning means contacts to rail head side；
7) detecting that rail head is cooled to the temperature of setting by the infrared thermometer on cooling body (can also
Set the time of compressed air cooling) after, compressed air cooling stops, the cylinder translational mechanism of automatic start compressed air cooling, drives spray wind
Cooler separates, while AT rail automatic backings, before AT rail heel end forges and presses section not in contact with the position of flange of rail screwdown gear
Stop rail traveling；
8) operating desk control flange of rail screwdown gear rises, and avoids the flange of rail of AT rails heel end forging and stamping section, continues the AT steel that shrinks back
Rail；
9) traveling of AT rail stops, and hangs away AT rails, prepares the heat treatment of next AT rail heel end forging and stamping section.
Handstand AT rail traveling that mechanism uses and heating furnace and the motionless scheme of air jetting device；AT rail can be used upright
Motionless and heating furnace and the mode of air jetting device traveling substitute；The rail of mechanism send flange of rail screwdown gear used in rail mechanism
Compressed air cylinder, and the compressed air cylinder of compressed air cooling device or so traveling, hydraulic means can be used to substitute；This reality
The heel end for adding compressed air cooling device to can be used for other type rail with the burning optimization on line AT rail sensing heatings in new
Forge and press section thermal management application.
The utility model is carried out whole using the AT rail heel end induction heaters specially manufactured and designed to AT rails heel end forging and stamping section
Heel end forging and stamping section and its heat affected area is completely covered in body Frequency Induction Heating, heating region, reaches crystal grain thinning and improves heel end forging
Press the purpose of section toughness plasticity.The rail head total length compressed air cooling device specially designed, make the rail head region compressed air cooling of sensing heating,
Raising heel end forging and stamping section rail head hardness and intensity, and the purpose matched with burning optimization on line AT rail hardness are reached.Simultaneously
Because the speed of tunneling boring sensing heating is higher than the firing rate of batch-type furnace, thus avoid that forging and stamping section heat affected area is wide and softening
The problem of area is wide.Simultaneously because the speed of tunneling boring sensing heating is less than the firing rate of tongue rail head heating inductor, because
And the position that inductor finally stops when avoiding the heating local heat treatmet of tongue rail head is due to cooling rate caused by the heat absorption of cold rail
The too fast risk for producing martensitic structure.
Using AT rails heel end sensing heating of the present utility model, the compressed air cooling device of heel end forging and stamping section and with suit
Put, realize burning optimization on line AT rails heel end forging and stamping section crystal grain thinning improve toughness and rail head recover hardness reach and online heat at
Manage the purpose of AT rail hardness matching.Avoid the risk that softened zone is wide, the abnormal structures such as martensitic structure occurs.
Finally it should be noted that above example is only describing the technical solution of the utility model rather than to this technology
Method is limited, and the utility model can above extend to other modifications, change, application and embodiment in application, and because
This thinks all such modification, change, application, embodiments all in the scope of protection of the utility model.
Claims (6)
1. a kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail, including send rail mechanism (1), the first positioning and guiding
Mechanism (2), compressed air cooling mechanism (3), the second positioning guide mechanism (4) and sensing heating mechanism (5), it is characterised in that send rail
Mechanism (1) connects the first positioning guide mechanism (2), the first positioning guide mechanism (2) connection compressed air cooling mechanism (3), sprays air-cooled
But mechanism (3) is connected by the second positioning guide mechanism (4) with sensing heating mechanism (5).
2. the heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail according to claim 1, it is characterised in that institute
State and send rail mechanism (1) to include the first flange of rail hold-down devices (11) and the second flange of rail hold-down devices (12), wherein, first flange of rail
Hold-down devices (11) and the second flange of rail hold-down devices (12) are by sending rail mechanism cylinder to drive.
3. the heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail according to claim 1, it is characterised in that institute
State the first positioning guide mechanism (2) and the second positioning guide mechanism (4) includes rail head top surface deflector roll and 2 side rollers respectively.
4. the heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail according to claim 1, it is characterised in that institute
State in compressed air cooling mechanism (3) compressed air cooling device by 1 rail head top surface air jetting device (31), the first rail head side air jetting device (32) and
Second rail head side air jetting device (33) forms, wherein, compressed air cooling device is connected with the slideway of level, rail head top surface air jetting device
(31), the first cooler cylinder (34) and the second cooler cylinder (35) drive air jetting device to be horizontally slipped on slideway respectively.
5. the heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail according to claim 1, it is characterised in that institute
State the outside of sensing heating mechanism (5) heating coil and silicon steel sheet is set, the coil bottom of heating coil sets sensing heating electric capacity
Device, wherein, induction heating apparatus is driven by motor.
6. the heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail according to claim 1, it is characterised in that institute
Stating heat treatment mechanism also includes intermediate frequency power supply and controlling organization, operating console, infrared radiation thermometer, hydrologic cycle cooling system, pressure
Contracting air supplies and pipe-line system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734999.1U CN207062340U (en) | 2017-06-22 | 2017-06-22 | A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720734999.1U CN207062340U (en) | 2017-06-22 | 2017-06-22 | A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail |
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| CN207062340U true CN207062340U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720734999.1U Active CN207062340U (en) | 2017-06-22 | 2017-06-22 | A kind of heel end forging and stamping section heat treatment mechanism of burning optimization on line AT rail |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643803A (en) * | 2019-11-05 | 2020-01-03 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110656230A (en) * | 2019-11-05 | 2020-01-07 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
-
2017
- 2017-06-22 CN CN201720734999.1U patent/CN207062340U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643803A (en) * | 2019-11-05 | 2020-01-03 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110656230A (en) * | 2019-11-05 | 2020-01-07 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod heating method |
| CN110643803B (en) * | 2019-11-05 | 2023-10-27 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod piece heating method |
| CN110656230B (en) * | 2019-11-05 | 2024-01-19 | 中国铁建重工集团股份有限公司道岔分公司 | Heating device and rod piece heating method |
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