CN105821185B - High strength steel gradient induction heating apparatus - Google Patents
High strength steel gradient induction heating apparatus Download PDFInfo
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- CN105821185B CN105821185B CN201610367980.8A CN201610367980A CN105821185B CN 105821185 B CN105821185 B CN 105821185B CN 201610367980 A CN201610367980 A CN 201610367980A CN 105821185 B CN105821185 B CN 105821185B
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- high strength
- strength steel
- charging aperture
- fire door
- induction heating
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- 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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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
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- Crystallography & Structural Chemistry (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses high strength steel gradient induction heating apparatus, including：Heating chamber, with the charging aperture for transporting part；Conveyer belt, it passes through the heating chamber to outside by charging aperture, for transmitting part to be heated in the heating chamber；Load coil, it is the pyramidal structure that internal diameter gradually increases；The conveyer belt can pass through along the load coil central axial direction；Converter plant, load coil described in its Electricity Federation, the energization frequency for changing the load coil；Control device, conveyer belt described in its Electricity Federation, the stop place for controlling the part.The characteristics of present invention has small error, controllable temperature, uniform warming temperature gradient.
Description
Technical field
Field is prepared the present invention relates to high strength steel, and in particular to high strength steel gradient induction heating apparatus.
Background technology
With highlighting for energy crisis and environmental problem, automotive light weight technology turns into focus of concern.At present, realize
The main path of automotive light weight technology has two kinds：One is structure lightened, i.e., tied using FInite Element and Optimization Design
Structure optimization design, improves design of part, reduces number of parts；Two be material lightweight, i.e., lightweight material is used in automobile making
Material, such as：High strength steel, Al alloys andMg alloys, plastics and composite etc..And how realize it is light-weighted simultaneously, it is ensured that automobile is touched
Hit security turns into the key of problem.
Crash Safety Design of Vehicles refers to the safety Design by vehicle structure and occupant restraint system, as far as possible in accident
Reduce occupant's injured degree during generation, and because in head-on crash accident the number of casualties it is most so that frontal crash of vehicles safety
It is noticeable outside personality.Automobile, by the deformation of crew module's front area, effectively absorbs vehicle during head-on crash
Impact kinetic energy, reduction crew module's deformation, it is ensured that occupant has enough living spaces.And the front longitudinal of thin membrane box structure is anterior
Topmost energy absorbing component in region, in the case where central collision impact kinetic energy is certain, if design rigidity is excessive, can make to pass in collision
The deceleration value with occupant is delivered to exceed the impact resistance threshold value of human body and directly cause people's injures and deaths；, can be big if design rigidity is too small
Big increase longeron length, meanwhile, external rigidity object may be caused to invade crew module, occupant injures and deaths are extruded into, therefore, before automobile
The rigidity Design of longeron is particularly important for its performance in central collision.To realize automobile while rigidity Design requirement is ensured
Lightweight, generally, uses the high strength steel with gradient characteristics on front longitudinal, makes that its front end rigidity is small, plasticity is good, and rear end
Rigidity is big, plasticity is poor, so as to realize progressive conquassation deformation from front to back in head-on crash, it is ensured that it passes through sufficient plasticity
Deformation absorbs enough energy.
At present, realize that the method for the high strength steel with gradient there are two kinds：One kind is by high strength steel heat stepwise
After austenitizing, by the cooling velocity of control unit different parts, make different parts that there are different room temperature texture's structures, it is real
Existing gradient characteristics distribution, but mold design is complicated in the method, and cost is higher and inaccurate to gradient distributed controll；Separately
One kind is to be heated to part after different temperatures from front to back using induction heating method, then makes different parts by cooling means
With different room temperature texture's structures, realize that gradient is distributed, and mainly have as follows in induction heating method in the prior art
Two methods realize gradient-heated：
1st, a part for steel is heated by sensing heating, and remainder is heated by heat exchange pattern, away from
More remote from sensing heating position, then heat transfer heating-up temperature is lower, so as to realize that gradient is distributed.Although the method equipment ratio
It is relatively simple, but thermograde is uncontrollable, and error is larger.
2nd, by designing two sections of different load coils, one section is heating coil, and one section is the warm coil of benefit, two sections of lines
The alternating current by different frequency is enclosed, the sensing heating under different temperatures is realized.Distinguish front and rear two parts of steel during heating
Among two sections of coils, so as to realize that gradient is distributed.But the method can only realize two sections of temperature controls, it is impossible to realize equal
Even thermograde, makes final gradient characteristics not ideal enough.
Accordingly, it would be desirable to a kind of induction heating apparatus is designed on the basis of existing, it is more uniform and controllable to realize
Gradient sensing heating, with the processing for the high strength steel for completing different gradient characteristics.
The content of the invention
The present invention has designed and developed high strength steel gradient induction heating apparatus, it is therefore an objective to solve to feel present in prior art
Answer heating means temperature error when realizing part gradient-heated big, it is uncontrollable, the problems such as uneven.The present invention has error
The characteristics of small, controllable temperature, uniform warming temperature gradient.
The technical scheme that the present invention is provided is：
High strength steel gradient induction heating apparatus, including：
Heating chamber, with the charging aperture for transporting part；
Conveyer belt, it passes through the heating chamber to outside by charging aperture, for transmitting to be heated in the heating chamber
Part；
Load coil, it is the pyramidal structure that internal diameter gradually increases；The conveyer belt can be along the sensing heating
Hub of a spool axis direction passes through；
Converter plant, load coil described in its Electricity Federation, the energization frequency for changing the load coil；
Control device, conveyer belt described in its Electricity Federation, the stop place for controlling the part.
Preferably, in addition to：Conveyer belt support bar is fixedly mounted in support bar base, its upper surface.
Preferably, in addition to：Charging aperture locking device, it is fixedly mounted on the support bar base, and it can be by
The charging aperture is closed, and the heating chamber is in closed state.
Preferably, the charging aperture locking device includes：
Fire door, it is installed at the charging aperture, can be used in closing the charging aperture；
Fire door retractor device, it is fixedly connected with the fire door；
Flexible rod sleeve, it is fixedly mounted on the support bar base, and with the coaxial cloth of fire door retractor device
Put；
Wherein, the fire door retractor device is arranged on the flexible rod set in the way of relatively described flexible rod sleeve is slided
In cylinder, and then control being turned on or off for the fire door.
Preferably, the charging aperture locking device also includes：Expansion link housing supports base, it is fixedly supported to described
The upper surface of support bar base；Wherein, the lower surface of the flexible rod sleeve is fixedly supported on the expansion link housing supports bottom
The upper surface of seat.
Preferably, the charging aperture locking device also includes：Expansion link top is retracted sleeve, and its lower surface is welded on institute
State the upper surface of flexible rod sleeve；The fire door retractor device can be slided in expansion link top retraction sleeve, described
The expansion link of fire door retractor device is located in the flexible rod sleeve.
Preferably, the support bar base is cuboid hollow-core construction, and the converter plant is arranged on the hollow knot
Inside structure.
Preferably, in addition to：Cooling chamber, it is hollow cuboid room, for making the part carry out cooling down；Institute
State part and the cooling chamber is passed through to outside by the conveyer belt.
Preferably, in the heating chamber, the heating coil is fixed in the heating chamber by fixed hook.
Preferably, the fixing device to the part is provided with the conveyer belt, it is used to make the part in biography
Stable transmission during sending.
The present invention is had the advantage that compared with prior art：
1st, high strength steel gradient induction heating apparatus of the present invention has the heating-up temperature of induction heating technique in itself
Height, efficiency high, speed are fast, heating-up temperature is easily controlled, is easily achieved mechanization, automation, without air pollution the advantages of；
2nd, high strength steel gradient induction heating apparatus of the present invention overcome prior art presence gradient sensing plus
Hot temperature error is big, uncontrollable, and uneven grade deficiency present in intensity adjustable high strength steel heating technique is missed there is provided one kind
Poor small, controllable temperature, the uniform gradient induction heating apparatus of warming temperature gradient, to obtain the high strength steel with gradient characteristics；
3rd, compared with production technology in existing industrial production, advantage for present invention is：(1) it is of the present invention
The thermograde that high strength steel gradient induction heating apparatus is reached evenly, makes the final high intensity rigidity with gradient characteristics
Can be more excellent；(2) high strength steel gradient induction heating apparatus of the present invention can be controlled before heated high intensity part
The expected temperature that rear end can reach, controls heat parts temperature；(3) high strength steel gradient sense of the present invention
Answer heater to be provided with thermograde control device, the size of heat gradient can be controlled.
Brief description of the drawings
Fig. 1 is total sectional view when high strength steel gradient induction heating apparatus of the present invention does not work；
Fig. 2 is total sectional view when high strength steel gradient induction heating apparatus of the present invention works；
Fig. 3 is the charging aperture locking device of high strength steel gradient induction heating apparatus of the present invention and becomes converter plant
Assembled sectional view；
Fig. 4 is the charging aperture locking device of high strength steel gradient induction heating apparatus of the present invention and becomes converter plant
Left view；
Fig. 5 is high strength steel gradient induction heating apparatus heating chamber of the present invention and the group of thermograde control device
Close sectional view；
Fig. 6 is high strength steel gradient induction heating apparatus cooling chamber of the present invention and the combination section view of conveying device
Figure；
Fig. 7 is the schematic shapes of load coil in high strength steel gradient induction heating apparatus of the present invention；
Fig. 8 is the position view of load coil in high strength steel gradient induction heating apparatus of the present invention；
Fig. 9 is the workflow diagram of high strength steel gradient induction heating apparatus of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
High strength steel gradient induction heating apparatus of the present invention includes conveying device, charging aperture locking device, frequency conversion
Device, heating chamber, gradient temperature control device, cooling chamber.
As shown in figure 1, conveying device includes charging aperture element fixing device 7, conveyer belt 8, conveyer belt support bar 9, discharging
Mouth part placement location 18, driving pulley 19, drive motor 20.
As shown in figure 3, charging aperture locking device, which includes expansion link top, is retracted sleeve 1, expansion link bail wire 2, expansion link
Sleeve 3, fire door retractor device 4, expansion link housing supports base 5, fire door 6, converter plant includes support bar base 10, frequency conversion dress
Put 11.
As shown in figure 5, heating chamber includes heating chamber 14, load coil 15, coil fixed hook 16, gradient temperature control
Device processed includes thermograde control panel 12, thermograde control room 13.
As shown in figure 3, in high strength steel gradient induction heating apparatus of the present invention, expansion link top retraction sleeve
1 is hollow cylinder, a height of 250mm, and internal diameter is 30mm, and external diameter is 33mm；Expansion link bail wire 2 is metal ring, outer radii
For 25mm, inner radii is 20mm, and thickness is 4mm, and expansion link bail wire 2 is away from the flexible upper surface of rod sleeve 3 apart from 150mm；It is flexible
Rod sleeve 3 is hollow cylinder, a height of 400mm, and internal diameter is 50mm, and external diameter is 53mm；Fire door retractor device 4 is solid cylinder,
Radius is 15mm；Expansion link housing supports base 5 is the inverse-U-shape rack on the axisymmetrical of rod sleeve 3 that stretches, frame upper branch
Support slab length is 400mm, and width is 100mm, and thickness is 20mm, and the bilateral support height of bottom is 500mm, and width is
100mm, thickness is 20mm；Fire door is solid rectangles, is highly 250mm, and width is 250mm, and thickness is 50mm；Charging aperture zero
Part fixing device 7 is that the variable part of a segment length fixes station；Support bar base 10 is cuboid hollow base, and length is
600mm, width is 600mm, and thickness is 20mm, is built-in with converter plant 11.
As shown in figure 3, in the charging aperture locking device of high strength steel gradient induction heating apparatus of the present invention, stretching
The lower surface of contracting bar top retraction sleeve 1 is welded in the upper surface of flexible rod sleeve 3, the outer surface welding of expansion link bail wire 2
In the inner surface of flexible rod sleeve 3, the lower surface of fire door retractor device 4 is welded in the upper surface of fire door 6, and stretch rod sleeve 3
Lower surface is supported in the upper surface of expansion link housing supports base 5, the bottom of expansion link housing supports base 5 by Type of Welding
The upper surface of support bar base 10 is fixed in support, and conveyer belt support bar 9 is fixed on the upper surface of support bar base 10, for propping up
Support conveyer belt 8.Fire door retractor device 4 and flexible rod sleeve 3 are coaxial, and fire door retractor device 4 is in expansion link top retraction sleeve 1
Slided, stretched by sliding control fire door by hydraulic way.The expansion rod part of fire door retractor device 4 is located at flexible rod sleeve
Among 3, pass through flexible opening and closing to control fire door of the fire door retractor device 4 in flexible rod sleeve 3.Wherein converter plant 11
Inside the hollow chamber of support bar base 10.
As shown in figure 5, the heating chamber 14 of high strength steel gradient induction heating apparatus of the present invention is hollow cuboid
Room, inside dimension is highly 800mm, and length is 900mm, and width is 600mm, and thickness is 50mm；Temperature of lower gradient control room
13 be hollow cuboid room, and inside dimension is highly 350mm, and length is 920mm, and width is 820mm, and thickness is 40mm.
As shown in figure 5, the left side of the heating chamber 14 of high strength steel gradient induction heating apparatus of the present invention is provided with length
230mm, high 200mm charging aperture.
As shown in figure 5, inside the heating chamber 14 of high strength steel gradient induction heating apparatus of the present invention, coil is fixed
Hook 16 is fixed among the wall of heating chamber 14, upper hook 16-1,16-2 and lower draw-bar 16-3,16-4 distance transmission belt surface
Apart from equal, it is ensured that heat high intensity part upper and lower surface temperature identical.Load coil 15 is fixed on upper left 16-1, the right side
Upper 16-2, lower-left 16-3, on bottom right 16-4 4 coil fixed hooks, it is pointed to the high intensity part 21 on conveyer belt 8
Carry out Omnidirectional heating.Heating chamber 14 is located on thermograde control panel 12, and centre is separated by two locular walls, thermograde
The wall of control panel room 13 plays a supportive role to heating chamber.
As shown in fig. 6, the cooling chamber of high strength steel gradient induction heating apparatus of the present invention is hollow cuboid room,
Inside dimension is highly 450mm, and length is 900mm, and width is 600mm, and thickness is 100mm；Lower motor room is hollow length
Cube room, inside dimension is highly 740mm, and length is 900mm, and width is 600mm, and thickness is 100mm.
As shown in fig. 6, after high intensity part 21 is heated, in high strength steel gradient induction heating apparatus of the present invention
Cooled down in cooling chamber 17, after the completion of cooling, the discharging opening part that high intensity part 21 rests on cooling chamber end places position
Put 18, pending next step processing.The bottom of cooling chamber 17 is driving motor room, is passed through between motor 20 and driving pulley 19
Conveyer belt 8 is connected.
As shown in figure 1, conveyer belt 8 is made up of heat proof material, the circular flow in whole device, to high intensity part 21
Gearing, controls the motion and stopping of workpiece.
As shown in Fig. 2 when high strength steel gradient induction heating apparatus of the present invention is heated, fire door 6 is in
Closed state, it is ensured that heating room temperature is free of extraneous thermal effects, conveyer belt 8 is in halted state, it is ensured that the standard of heating-up temperature
True property.
As shown in Figure 7 and Figure 8, two surfaces up and down for guarantee high intensity part 21 have identical temperature, design process
The middle upper and lower surface for ensureing high intensity part 21 is equal with the distance of the load coil 15 with special shape, i.e. in Fig. 8
D1 and d2 are equal, it is ensured that upper and lower surface heating-up temperature is uniform.
The practical work process of high strength steel gradient induction heating apparatus is introduced with reference to two specific embodiments.
Embodiment 1：The conventional gradient sensing heating operating mode of part
Using length be 300mm sectional dimensions as 80mm × 80mm, thickness for 8mm cuboid thin-wall metal part gradient
Exemplified by sensing heating：
1st, work is preset：Switch on power, adjust converter plant 11, it is 1000 DEG C to make the maximum temperature that can be heated, then
Expected heating maximum temperature is set in thermograde control panel 12 as 950 DEG C, part length 300mm, thermograde is inputted
150 DEG C, thermograde control device record data simultaneously put by computing gear institute off-position, presets work and completes；
2nd, part is fixed on charging aperture element fixing device 7, fire door 6 is opened using fire door retractor device 4, started
Transmission device, transmission device is automatically stopped in default position, now closes fire door 6, is ready for heating；
3rd, open heater switch to be heated, reach after the default heat time, open transmission device, part is transported out of rapidly
Heating chamber 14, transports cooling chamber 17 to and is cooled down, and close heater；
4th, treat after the completion of part cooling, part is transported to discharging opening workpiece location 18, take out part, carry out next step
Processing.
5th, temperature and Tissue distribution：
Part length described in this example is 300mm, and maximum temperature is 950 DEG C, and thermograde is 150 DEG C, part minimum temperature
For 800 DEG C, so the Part temperature gradient is 0.5 DEG C/mm.Through cooling treatment after heating, left end 100mm is organized as martensite,
Intensity, rigidity, hardness are larger, but plasticity is poor；Right-hand member 100mm, is organized as pearlite, and intensity, rigidity, hardness are smaller, but modeling
Property is preferable；Middle 100mm is transitional region, and tissue transition is gentle.
Embodiment 2：The special operation condition of part gradient sensing heating
1st, to the adjustment of temperature：
Using length be 300mm sectional dimensions as 80mm × 80mm, thickness for 8mm cuboid thin-wall metal part gradient
Exemplified by sensing heating：
(1), can be in default work when heating maximum temperature rises to 1100 DEG C by 950 DEG C in embodiment 1 needed for part
By adjusting converter plant 11 in work, increase coil institute indirect current frequency, so as to increase the alternating magnetic field intensity of generation, increases
Eddy current effect, the maximum temperature rise for making part to heat, makes maximum heating temperature up to 1200 DEG C.Pass through thermograde again
The adjustment of control panel 12 makes part heat maximum temperature for 1100 DEG C.(it can pass through when required heating bulk temperature declines
Adjustment converter plant 11 makes to reduce to realize by the ac frequency of coil)；
(2) part is fixed on charging aperture element fixing device 7, opens fire door 6 using fire door retractor device 4, open
Dynamic transmission device, transmission device is automatically stopped in default position, now closes fire door 6, is ready for heating；
(3) open heater switch to be heated, reach after the default heat time, open transmission device, part is transported rapidly
From heating chamber 14, transport cooling chamber 17 to and cooled down, and close heater；
(4) treat after the completion of part cooling, part is transported to discharging opening workpiece location 18, take out part, carry out next
Step processing.
2nd, to the adjustment of thermograde:
Using length be 300mm sectional dimensions as 80mm × 80mm, thickness for 8mm cuboid thin-wall metal part gradient
Exemplified by sensing heating：
(1) in actual production according to the requirement of different gradient intensities, the temperature difference of part or so section also has different requirements, joins
The shape of Fig. 7 induction coils 15 is read, when workpiece is heated in load coil 15, from left to right while lapse of temperature,
Thermograde is also successively decreased, therefore when thermograde to be increased, can be in default work, by thermograde control panel 12
Middle progress is calculated and set automatically, workpiece is parked in the position that heating zone keeps left, is made thermograde by 150 DEG C in embodiment 1
Rise to 200 DEG C.(to reduce thermograde, then workpiece is parked in the position that heating zone is kept right by default).
(2) part is fixed on charging aperture element fixing device 7, opens fire door 6 using fire door retractor device 4, open
Dynamic transmission device, transmission device is automatically stopped in default position, now closes fire door 6, is ready for heating；
(3) open heater switch to be heated, reach after the default heat time, open transmission device, part is transported rapidly
From heating chamber 14, transport cooling chamber 17 to and cooled down, and close heater；
(4) treat after the completion of part cooling, part is transported to discharging opening workpiece location 18, take out part, carry out next
Step processing.
The adjustment to temperature and the adjustment to thermograde can also in the special gradient sensing heating operating mode of above part
Carry out simultaneously.
In summary, it is of the invention compared with production technology in existing industrial production, to the present invention also have the special feature that do into
The explanation of one step：
(1) thermograde that high strength steel gradient induction heating apparatus of the present invention is reached evenly, makes final
High strength steel performance with gradient characteristics is more excellent；As shown in Fig. 2 the present invention uses the coil of sensing heating to breach biography
The shape of system induction coil, the coil of the special shape gradually increased using coil helix internal diameter.Sensing heating utilizes and is connected with friendship
The coil of electricity is flowed, makes the magnetic field for around producing alternation, and metal material can produce the principle of eddy current effect in alternating magnetic field,
Metal material is heated using eddy current effect；The principle that is utilized of the present invention is：Alternating magnetic field around induction coil is strong
Degree is reduced with the increase from coil distance, so that eddy current effect weakens, causes heating-up temperature to reduce.Design spiral internal diameter
Gradually increased load coil so that in uiform section part therein pass through with the distance of coil by
It is cumulative big so that heated Part temperature is gradually reduced.Because the whole spiral internal diameter consecutive variations of heating coil vertically, make
Continuous gradient distribution is presented in the temperature of high intensity part when must heat, so that the high intensity part after cooling is with more excellent
Gradient characteristics distribution.
(2) high strength steel gradient induction heating apparatus of the present invention can control the front and rear of heated high intensity part
The expected temperature that can be reached is held, heat parts temperature is controlled；As shown in figure 3, temperature control mainly utilizes frequency conversion
Device is realized, by the frequency of converter plant indirect current to change, and control produces the degree of strength of vortex, so as to control to add
The minimum and maximum temperature of thermal.
(3) high strength steel gradient induction heating apparatus of the present invention is provided with thermograde control device, can control
The size of heat gradient；As shown in figure 3, thermograde control device is semi-automatic controller, lead to friendship by being manually entered
The electric frequency of stream, the transmission speed of transmission device, expected thermograde, automatic calculate are heated up intensity part in sensing heating
Stop place needed for device, and then transmission device is stopped transmission when part reaches this position, it is ensured that part reaches pre-
Transmission device restarts transmission after the completion of fixed heat time and temperature, heating, heated part is transported out of heating zone rapidly.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (7)
1. high strength steel gradient induction heating apparatus, it is characterised in that including：
Heating chamber, with the charging aperture for transporting part；
Conveyer belt, it passes through the heating chamber to outside by charging aperture, for transmitting part to be heated in the heating chamber；
Load coil, it is the pyramidal structure that internal diameter gradually increases；The conveyer belt can be along the load coil
Central axial direction passes through；
Converter plant, load coil described in its Electricity Federation, the energization frequency for changing the load coil；
Control device, conveyer belt described in its Electricity Federation, the stop place for controlling the part；
Conveyer belt support bar is fixedly mounted in support bar base, its upper surface；
Charging aperture locking device, it is fixedly mounted on the support bar base, and it can close the charging aperture, is made described
Heating chamber is in closed state；
The charging aperture locking device includes：
Fire door, it is installed at the charging aperture, can be used in closing the charging aperture；
Fire door retractor device, it is fixedly connected with the fire door；
Flexible rod sleeve, it is fixedly mounted on the support bar base, and coaxially arranged with the fire door retractor device；
Wherein, the flexible rod sleeve is hollow cylinder, and the fire door retractor device is solid cylinder, the flexible dress of the fire door
Put and be arranged in the way of relatively described flexible rod sleeve is slided in the flexible rod sleeve, and then control the unlatching of the fire door
Or close.
2. high strength steel gradient induction heating apparatus as claimed in claim 1, it is characterised in that the charging aperture locking device
Also include：Expansion link housing supports base, it is fixedly supported to the upper surface of the support bar base；Wherein, the expansion link
The lower surface of sleeve is fixedly supported on the upper surface of the expansion link housing supports base.
3. high strength steel gradient induction heating apparatus as claimed in claim 2, it is characterised in that the charging aperture locking device
Also include：Expansion link top is retracted sleeve, and its lower surface is welded on the upper surface of the flexible rod sleeve；The flexible dress of the fire door
Putting can slide in expansion link top retraction sleeve, and the expansion link of the fire door retractor device is located at the flexible rod set
In cylinder.
4. high strength steel gradient induction heating apparatus as claimed in claim 1, it is characterised in that the support bar base is length
Cube hollow-core construction, the converter plant is arranged on inside the hollow-core construction.
5. the high strength steel gradient induction heating apparatus as any one of claim 1-4, it is characterised in that also include：
Cooling chamber, it is hollow cuboid room, for making the part carry out cooling down；The part is passed through by the conveyer belt
The cooling chamber is to outside.
6. high strength steel gradient induction heating apparatus as claimed in claim 5, it is characterised in that in the heating chamber, institute
Heating coil is stated to be fixed in the heating chamber by fixed hook.
7. high strength steel gradient induction heating apparatus as claimed in claim 6, it is characterised in that be provided with the conveyer belt
To the fixing device of the part, it is used to make the part stable transmission during transmission.
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| CN201610367980.8A CN105821185B (en) | 2016-05-30 | 2016-05-30 | High strength steel gradient induction heating apparatus |
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| CN109047599A (en) * | 2018-08-07 | 2018-12-21 | 中国兵器工业新技术推广研究所 | A kind of bar heating device and method for upsetting |
| CN111575448B (en) * | 2020-06-16 | 2021-10-22 | 广西汇恒机械制造有限公司 | Processing method of shaft |
| CN111876576B (en) * | 2020-08-10 | 2021-04-27 | 湖南人文科技学院 | Manufacturing and strengthening method of lower core connecting rod in compression molding machine |
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| JPH06172866A (en) * | 1992-12-09 | 1994-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Induction heating method of metallic pipe |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105368A (en) * | 2007-08-15 | 2008-01-16 | 苏州工业园区华福科技有限公司 | Line-frequency induction gradient temperature heating oven |
| CN101562920A (en) * | 2008-04-17 | 2009-10-21 | 西北工业大学 | High-temperature gradient directional solidification conical graphite induction heater |
| CN102652459A (en) * | 2009-12-14 | 2012-08-29 | 新日本制铁株式会社 | Control device for induction heating device and method for controlling induction heating system and induction heating device |
| CN205635692U (en) * | 2016-05-30 | 2016-10-12 | 吉林大学 | High strength steel gradient induction heater |
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