CN105543455B - A kind of sensing heating heat-treatment technology method of clad steel plate - Google Patents
A kind of sensing heating heat-treatment technology method of clad steel plate Download PDFInfo
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- CN105543455B CN105543455B CN201511008747.2A CN201511008747A CN105543455B CN 105543455 B CN105543455 B CN 105543455B CN 201511008747 A CN201511008747 A CN 201511008747A CN 105543455 B CN105543455 B CN 105543455B
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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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- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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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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Abstract
The invention discloses a kind of sensing heating heat-treatment technology method of clad steel plate, belong to steel rolling technical field of heat treatment, induction heating apparatus is：The transfer roller upper end of conveyer is provided with the bracket that can be moved up and down, bracket lower horizontal direction is provided with several induction coils, bracket side is vertically provided with number row exhaust duct, exhaust duct lower end is provided with nozzle, exhaust duct side is provided with number row drainpipe, drainpipe lower end is provided with nozzle, and the exhaust duct nozzle and drainpipe nozzle direction are opposite with induction coil direction；The first step：Composite plate blanks are placed in transfer roller upper end, and adjustment bracket makes induction coil keep certain distance with composite plate blanks；Second step：The distance of the power of induction coil, coil and coating, and the translational speed of induction coil are adjusted, realizes and quick solid solution treatment or quenching heat treatment is carried out to the coating of unlike material and thickness；3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water cooling or air-blast quenching processing.
Description
Technical field
The present invention relates to a kind of sensing heating heat-treatment technology method of clad steel plate, belongs to steel rolling heat treatment technics neck
Domain.
Background technology
Clad steel plate is usually using ordinary carbon steel or Vessel Steels as base material, and stainless steel, abrasion-resistant stee or other height are closed
Jin Gang etc. is used as coating, by exploding, blast+hot rolling, hot rolling the methods of be combined into one.Clad steel plate fully utilizes coating
Feature and base material mechanical property, saved expensive coating, reduced equipment manufacturing costs, and improve equipment
Overall performance, can be widely used in the fields such as chemical industry, oil, desalinization, shipbuilding, metallurgy.
At present, stainless steel clad plate or wear-resistant composite board etc. either pass through blast+hot rolling or direct vacuum seal hot rolling
Mainly using the interior symmetrical assemble pattern of cladding, i.e. stainless steel or abrasion-resistant stee coating is wrapped in inside carbon steel, by being rolled into
Separation is cut after shape again.Because the cooling of composite plate steel plate center portion is slow after hot rolling, the stainless steel of interior cladding passes through in cooling procedure
450-850 DEG C of sensitized zone used time is longer, causes stainless steel cladding the unqualified problem of corrosion among crystalline grains often occur.Equally, it is resistance to
Steel plate coating is ground due to hard high-wearing feature slowly can not be reached using interior cladding assembly rolling mode, hot roller repairing
It is required that.Therefore, these clad steel plates are dissolved or quenching heat treatment offline after often needing separation, to meet requirement.It is existing
The heat treatment technics for having composite plate mainly integrally heats in heating furnace, quenching heat treatment after coming out of the stove.However, base material and coating
Technology for Heating Processing is usually conflicting, and such as stainless steel clad plate, the heating-up temperature of stainless steel cladding is higher than carbon steel base material, and
Stainless steel cladding must carry out solution treatment when being cooled down, and be rapid cooling, and carbon steel base material requires normalizing or rolled, is slow cooling；
Equally, for wear-resistant composite board, abrasion resistant coating must obtain martensitic structure by cold quenching soon, to ensure its hardness and wearability, and
Carbon steel base material needs slow cooling to ensure its toughness reguirements.If carrying out bulk heat treatmet to clad steel plate, it is often difficult to take into account base simultaneously
The performance requirement of material and coating, and the partial properties of base material or coating will necessarily be sacrificed；In addition, overall heating Technology for Heating Processing needs
The substantial amounts of energy is consumed, has raised the cost of composite plate, and template warpage is excessive after bulk heat treatmet, causes special thick compound
Plate shaping is difficult.Therefore, to solve these problems that composite plate integrally heats heat treatment, urgent need will develop a kind of efficient quick,
Performance and plate form control are good, the low novel thermal process technique of energy consumption.
The content of the invention
In order to overcome above-mentioned technical deficiency, the invention provides a kind of sensing heating Technology for Heating Processing of clad steel plate
Method, unilateral coating rapid thermal treatment is carried out to clad steel plate using flat magnetic field induction heating technique, senses work(by adjusting
Rate and frequency, coil and the technological parameter such as coating distance, translational speed, accurate control to the heating-up temperature of coating, depth and
Soaking time, insulation terminate to carry out water-spraying control to coating steel plate by heating coil end immediately, make coating quick to reach
Cooling, and the purpose of the less tissue and performance for not influenceing base material even.
Technical scheme is used by the present invention solves its technical barrier：A kind of sensing heating heat treatment work of clad steel plate
Process, induction heating apparatus are：The transfer roller upper end of conveyer is provided with the bracket that can be moved up and down, bracket lower horizontal direction
Provided with several induction coils, bracket side is vertically provided with number row exhaust duct, and exhaust duct lower end is provided with nozzle, exhaust duct side
Provided with several row drainpipes, drainpipe lower end is provided with nozzle, the exhaust duct nozzle and drainpipe nozzle direction and the line of induction
It is opposite to enclose direction；
The sensing heating heat treatment specific steps of the present invention：
The first step：Composite plate blanks are fixed on bottom plate or are placed in the upper end of transfer roller 7 by self gravitation, and adjustment bracket 1 makes
Induction coil keeps certain distance with composite plate blanks；
Second step：Adjust the spacing distance of the power of induction coil, induction coil and coating, and the mobile speed of induction coil
The parameters such as degree, realize and quick solid solution treatment or quenching heat treatment are carried out to the coating of unlike material and thickness；
3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water cooling or air-blast quenching
Processing；
The sensing heating of 304/Q345R clad steel plates is heat-treated
It is from method hot rolling plate size：Long 400 mm, wide 200 mm, the mm of gross thickness 30, base material are 25 mm thick
Q345R, coating are 304 thick stainless steels of 5 mm.Steel plate is placed vertically, and steel plate lower end is fixed with bench vice, and coil, which is located at, to be covered
Layer side, is placed in slab lower end, and coil and clad surface distance are 8.0 mm, and heating voltage is 420 V, field frequency 8.2
KHz, induced-current are 320 A, and heating power is 134.4 kW.During heating, coil is preheated first, preheating time 5s,
Then coil is moved with 80mm/min speed, moving direction is bottom-up, heats after terminating by the shower nozzle of drainpipe
Water-spraying control is carried out, solution treatment is carried out to coating.
The sensing heating of 304/Q345R clad steel plates is heat-treated：
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating
For 304 thick stainless steels of 5 mm.Steel plate is placed vertically, steel plate lower end is fixed with bench vice, coil is located at coating side, is placed in plate
Base lower end, coil are 8.0mm, heating voltage 420V, field frequency 8.2kHz with clad surface distance, and induced-current is
320A, heating power 134.4kW.During heating, coil is preheated first, preheating time 5s, then by coil with
100mm/min speed moves, and moving direction is bottom-up, while coil moves, is sprayed by the shower nozzle of drainpipe 3
Water cooling, solution treatment is carried out to coating.
The sensing heating heat treatment of 304/Q345R clad steel plates：
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating
For 304 thick stainless steels of 5 mm.Steel plate is placed vertically, steel plate lower end is fixed with bench vice, coil is located at coating side, is placed in plate
Base lower end, coil are 8.0mm, heating voltage 420V, field frequency 8.2kHz with clad surface distance, and induced-current is
320A, heating power 134.4kW.During heating, coil is preheated first, preheating time 5s, then by coil with
120mm/min speed moves, and moving direction is bottom-up, while coil moves, is sprayed by the shower nozzle of drainpipe 3
Water cooling, solution treatment is carried out to coating.
The beneficial effects of the invention are as follows：Induction heating technique is applied in the coating heat treatment of clad steel plate by the present invention,
It can realize and the coating of unlike material and thickness is entered by accurately controlling the parameters such as induced power, spacing distance or translational speed
The heat treatment such as the quick solid solution of row or quenching.With the overall heating of the clad steel plate tradition Technology for Heating Processing phase that entirety or top layer quench again
Than again the new method can only be effectively improved the tissue and performance of coating, also be advantageous to compound to the quick heating of coating and cooling
The plate form control of plate, and the influence being heat-treated to matrix structure and performance is minimized.The new process can significantly drop
The energy consumption of low composite plate heat treatment, saves the energy, improves efficiency, reduce cost.
Brief description of the drawings
Fig. 1 induction heating apparatus structural representations.
The oxalic acid electrolytic etching image of coating stainless steel after Fig. 2 sensing heatings（Coil translational speed is 80mm/min）.
Fig. 3 sensing heating rear substrates Q345R organization chart picture（Coil translational speed is 80mm/min）.
The oxalic acid electrolytic etching image of coating stainless steel after Fig. 4 sensing heatings（Coil translational speed is 100mm/min）.
Fig. 5 sensing heating rear substrates Q345R organization chart picture（Coil translational speed is 100mm/min）.
The oxalic acid electrolytic etching image of coating stainless steel after Fig. 6 sensing heatings（Coil translational speed is 120mm/min）.
Fig. 7 sensing heating rear substrates Q345R organization chart picture（Coil translational speed is 120mm/min）.
In figure：1st, bracket, 2, exhaust duct, 3, drainpipe, 4, coil, 5, carry out layer, 6, substrate, 7, transfer roller.
Embodiment
A kind of sensing heating heat-treatment technology method of clad steel plate, induction heating apparatus are：On the transfer roller 7 of conveyer
End is provided with the bracket 1 that can be moved up and down, and the lower horizontal direction of bracket 1 is provided with several induction coils 4, and the side of bracket 1 is vertically provided with
Number row exhaust duct 2, the lower end of exhaust duct 2 are provided with nozzle, and the side of exhaust duct 2, which is provided with, counts row drainpipe 3, under drainpipe 3
End is provided with nozzle, and the exhaust duct nozzle and drainpipe nozzle direction are opposite with the direction of induction coil 4；
The specific steps of the present invention：
The first step：Composite plate blanks are fixed on bottom plate or are placed in the upper end of transfer roller 7 by self gravitation, make the direction of substrate 6
Transfer roller 7, carry out layer 5 makes induction coil 4 keep certain distance with composite plate blanks towards coil 4, adjustment bracket 1；
Second step：Adjust the spacing distance of the power of induction coil, induction coil and coating, and the mobile speed of induction coil
The parameters such as degree, realize and quick solid solution treatment or quenching heat treatment are carried out to the coating of unlike material and thickness；
3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water cooling or air-blast quenching
Processing.
The sensing heating heat treatment of the 304/Q345R clad steel plates of embodiment 1
It is from method hot rolling plate size：Long 400 mm, wide 200 mm, the mm of gross thickness 30, base material are 25 mm thick
Q345R, coating are 304 thick stainless steels of 5 mm.Steel plate is placed vertically, and steel plate lower end is fixed with bench vice, and coil, which is located at, to be covered
Layer side, is placed in slab lower end, and coil and clad surface distance are 8.0 mm, and heating voltage is 420 V, field frequency 8.2
KHz, induced-current are 320 A, and heating power is 134.4 kW.During heating, coil is preheated first, preheating time 5s,
Then coil is moved with 80mm/min speed, moving direction is bottom-up, heats after terminating by the shower nozzle of drainpipe 3
Water-spraying control is carried out, solution treatment is carried out to coating.
Metallographic specimen is cut on composite plate blanks after heat treatment, using the method A oxalic acid EC test sides of GB/T 4334
Method detects the intergranular corrosion resistance performance of coating 304, and erosion profile of the stainless steel layer from interface to surface is recorded with metallographic microscope,
The oxalic acid electrolytic etching pattern of the stainless steel of coating 304, as shown in Figure 2：Fig. 2 leftmost sides are compound interface, and the picture rightmost side is to cover
Layer surface, about 0-25 μm of the class loading of interface three, it is then 150-250 μm of two class loadings through measurement, remaining width is a kind of group
Knit, with the result after sample oxalic acid corrosion before heat treatment：800-840 μm of three class loadings of near interface, remaining width are two class groups
The corrosion condition knitted is compared, and the intergranular corrosion resistance performance of coating stainless steel is significantly improved, and has been reached stainless steel cladding and has been consolidated
The purpose of molten processing.
Base material Q354R carbon steels is organized as before heat treatment：Near interface decarbonation zone is ferrite, and remaining position is ferrite
+ pearlite.After sensed heating heat treatment, peak width that matrix structure is induction heated influence is about 4.3 mm, heat affecting
Obvious graded, organization type, pattern and various organization width, as shown in figure 3, is presented in carbon steel tissue in figure 1. in area
For bainite, its width it is 0.1-0.14mm on the left of the interface, is 2. martensite+bainite, its width is 1.2-1.4
Mm, it is 3. martensite+bainite+a small amount of ferrite, its width is 1.0-1.3 mm, is 4. bainite+ferrite+martensite,
Its width is 0.7-0.8 mm, is 5. bainite+ferrite+martensite+a small amount of fine pearlite, and its width is 0.4-0.5 mm,
6. being ferrite+bainite+martensite+a small amount of fine pearlite, its width 0.9-1.0 mm, 7. remaining is ferrite+pearlite.
In addition to nearly interface heat affected area, matrix residual thickness still keeps normalizing ferrite+pearlitic structrure of rolled.
Base material martensitic structure content in the heat affected area of interface is larger（About 70%-80%）, it need to be returned
Fire processing, tempering process system is the h of temperature 450 DEG C × 2, to discharge stress and improve the performance of near interface carbon steel.To heat
The bond strength of slab compound interface after processing carries out experimental analysis, and the average value of shearing strength measured is 400MPa ± 10
MPa, it is suitable with the shear strength before heat treatment, and it is far above 210MPa as defined in standard.
The sensing heating heat treatment of the 304/Q345R clad steel plates of embodiment 2
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating
For 304 thick stainless steels of 5 mm.Steel plate is placed vertically, steel plate lower end is fixed with bench vice, coil is located at coating side, is placed in plate
Base lower end, coil are 8.0mm, heating voltage 420V, field frequency 8.2kHz with clad surface distance, and induced-current is
320A, heating power 134.4kW.During heating, coil is preheated first, preheating time 5s, then by coil with
100mm/min speed moves, and moving direction is bottom-up, while coil moves, is sprayed by the shower nozzle of drainpipe 3
Water cooling, solution treatment is carried out to coating.
Slab after heat treatment, metallographic specimen is cut, detected using the method A oxalic acid EC tests methods of GB/T 4334
The intergranular corrosion resistance performance of coating 304, erosion profile of the stainless steel layer from interface to surface, coating are recorded with metallographic microscope
The oxalic acid electrolytic etching pattern of 304 stainless steels is as shown in Figure 4：Fig. 4 leftmost sides are compound interface, and the picture rightmost side is coating table
Face, about 125-145 μm of the class loading of interface three, it is then 120-180 μm of two class loadings through measurement, remaining width is a kind of group
Knit, with 800-840 μm of three class loadings near heat treatment front interface, remaining width is that two histioid corrosion conditions are compared, coating
The intergranular corrosion resistance performance of stainless steel has obtained larger improvement.
Base material carbon steel is organized as before heat treatment：Near interface decarbonation zone is ferrite, and remaining position is ferrite+pearly-lustre
Body, it is sensed heating heat treatment after, matrix structure type, pattern and various organization width as shown in figure 5, in figure 1. from interface
It is 0.1-0.12 mm that left side, which starts as bainite+ferrite, its width, is 2. martensite+bainite+a small amount of ferrite, and it is wide
Spend for 1.4-1.8 mm, be 3. bainite+ferrite+martensite, its width is 0.5-0.7 mm, 4. for martensite+bainite+
A small amount of ferrite, its width is 1.2-1.6 mm, 5. remaining as ferrite+pearlite, not by heat effect.Heat effect region
Width be about 3.5mm, be ferrite in heat effect area, bainite and martensite tissue, can be determined according to following process requirement
It is fixed whether to need to carry out it temper, it is not tempered in the present embodiment.The shear strength that shearing experiment obtains is about
It is suitable with the shear strength before heat treatment for 400 ± 10MPa.
The sensing heating heat treatment of the 304/Q345R clad steel plates of embodiment 3
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating
For 304 thick stainless steels of 5 mm.Steel plate is placed vertically, steel plate lower end is fixed with bench vice, coil is located at coating side, is placed in plate
Base lower end, coil are 8.0mm, heating voltage 420V, field frequency 8.2kHz with clad surface distance, and induced-current is
320A, heating power 134.4kW.During heating, coil is preheated first, preheating time 5s, then by coil with
120mm/min speed moves, and moving direction is bottom-up, while coil moves, is sprayed by the shower nozzle of drainpipe 3
Water cooling, solution treatment is carried out to coating.
Slab after heat treatment, metallographic specimen is cut, detected using the method A oxalic acid EC tests methods of GB/T 4334
The intergranular corrosion resistance performance of coating 304, erosion profile of the stainless steel layer from interface to surface, coating are recorded with metallographic microscope
The oxalic acid electrolytic etching pattern of 304 stainless steels is as shown in Figure 6：Fig. 6 leftmost sides are compound interface, and the picture rightmost side is coating table
Face, about 360-440 μm of the class loading of interface three, it is then 200-310 μm of two class loadings through measurement, remaining width is a kind of group
Knit；Being heat-treated front interface, nearby three class loadings are about 800-840 μm, and remaining width is two class loadings.By contrast, added using sensing
The intergranular corrosion resistance performance of coating stainless steel is effectively improved after heat treatment.
Base material carbon steel is organized as before heat treatment：Near interface decarbonation zone is ferrite, and remaining position is ferrite+pearly-lustre
Body, after sensed heating heat treatment, matrix structure type, pattern and various organization width are as shown in fig. 7, Fig. 7 leftmost sides black line
For compound interface, after testing, the width in heat effect region is about 1.6mm, based on ferrite, bainite, in figure 1. from
Start as ferrite, its width to be 0.08-0.1 mm on the left of interface, be 2. for ferrite+martensite+bainite, its width
1.0-1.4 mm, it is 3. ferrite+martensite+bainite+a small amount of fine pearlite, its width is 0.7-0.9 mm, is 4. residue
Width is not ferrite+pearlitic structrure by heat effect；Temper can not be carried out to it.Clipped experimental analysis, heat at
Interface shear strength is about 390 ± 10MPa after reason, suitable with the interface shear strength before heat treatment.
To same stainless steel clad plate base, overall heating is carried out, heating-up temperature is 1000 DEG C, after held for some time
"+600 DEG C of tempers of integral quenching " are carried out respectively and clad surface single face spraying is quenched and handles experiment.
For " integral quenching+temper " stainless steel clad plate, result of the stainless steel cladding through oxalic acid electrolytic etching is：
The class loading width of near interface three is 250-270 μm, and subsequent two class loadings width is 400-440 μm, then to stainless steel surfaces
Residual thickness be a class loading；Carbon steel is organized as：Former interface decarburized layer is mainly bainite, and remaining position is tempered martensite
+ tempering bainite, close to carbon steel layer surface（In addition to surface-carburized layer）Based on tempered martensite, to be tempered bayesian in the middle part of carbon steel
Based on body.Clipped experiment test, its interfacial combined function is suitable with rolled, and shear strength is about 410 MPa.
Quenched stainless steel clad plate for coating stainless steel surfaces single face spraying, result of the stainless steel cladding through oxalic acid electrolytic etching
For：400-440 μm of three class loading of near interface, it is afterwards 280-310 μm of two class loadings, remaining as a class loading；Carbon steel interface
Neighbouring former decarburized layer is organized as ferrite+pearlite+a small amount of bainite, and in addition to interface and surface-carburized layer, remaining position is shellfish
Simultaneously there is certain gradient in family name's body+ferrite+pearlite, the position away from interface, bainite is reduced, and ferrite and pearlite increases
It is more.Clipped experiment test, its interfacial combined function is suitable with rolled, and shear strength is about 400 MPa.
But because in overall heating process, base material is different with the coefficient of expansion for covering material so that slab occurs bending and deformation,
Obtained slab plate shape is poor.
By Experimental comparison, one side heat treatment is carried out to stainless steel clad plate using sensing heating, concentrates heat
In stainless steel cladding, preferable solution treatment can be realized to coating, while can be as far as possible less to base material carbon steel tissue and mechanical property
The influence of energy, be advantageous to the control of plate shape, reduce energy consumption, reduce cost, realize the control to stainless steel clad plate combination property
System.
Claims (3)
1. a kind of sensing heating heat-treatment technology method of clad steel plate, it is characterized in that：Induction heating apparatus is：The biography of conveyer
Send roller（7）Upper end is provided with the bracket that can be moved up and down（1）, bracket（1）Lower horizontal direction is provided with several induction coils（4）, support
Frame（1）Side is vertically provided with number row exhaust duct（2）, exhaust duct（2）Lower end is provided with nozzle, exhaust duct（2）Side is provided with number
Row drainpipe（3）, drainpipe（3）Lower end is provided with nozzle, the exhaust duct nozzle and drainpipe nozzle direction and the line of induction
Circle（4）Direction is opposite；
Specific steps：The first step：Composite plate blanks are fixed on bottom plate or are placed in transfer roller by self gravitation（7）Upper end, make base
Plate（6）Towards transfer roller（7）, carry out layer（5）Towards induction coil（4）, adjust bracket（1）Make induction coil（4）With composite plate blanks
Keep certain distance；
Second step：Adjust the spacing distance of the power of induction coil, induction coil and coating, and the translational speed of induction coil
Parameter, realize and quick solid solution treatment or quenching heat treatment are carried out to the coating of unlike material and thickness；
3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water hardening processing；
It is from method hot rolling plate size：Long 400 mm, wide 200 mm, the mm of gross thickness 30, base material are 25 mm thick
Q345R, coating are 304 thick stainless steels of 5 mm；Steel plate is placed vertically, and steel plate lower end is fixed with bench vice, and coil, which is located at, to be covered
Layer side, slab lower end is placed in, induction coil is 8.0 mm with clad surface distance, and heating voltage is 420 V, and field frequency is
8.2 kHz, induced-current are 320 A, and heating power is 134.4 kW；During heating, induction coil is preheated first, during preheating
Between be 5s, then induction coil is moved with 80mm/min speed, moving direction is bottom-up, heating terminate after by arranging
Water pipe（3）Nozzle carry out water-spraying control, to coating carry out solution treatment.
2. a kind of sensing heating heat-treatment technology method of clad steel plate, it is characterized in that：Induction heating apparatus is：The biography of conveyer
Send roller（7）Upper end is provided with the bracket that can be moved up and down（1）, bracket（1）Lower horizontal direction is provided with several induction coils（4）, support
Frame（1）Side is vertically provided with number row exhaust duct（2）, exhaust duct（2）Lower end is provided with nozzle, exhaust duct（2）Side is provided with number
Row drainpipe（3）, drainpipe（3）Lower end is provided with nozzle, the exhaust duct nozzle and drainpipe nozzle direction and the line of induction
Circle（4）Direction is opposite；
Specific steps：The first step：Composite plate blanks are fixed on bottom plate or are placed in transfer roller by self gravitation（7）Upper end, make base
Plate（6）Towards transfer roller（7）, carry out layer（5）Towards induction coil（4）, adjust bracket（1）Make induction coil（4）With composite plate blanks
Keep certain distance；
Second step：Adjust the spacing distance of the power of induction coil, induction coil and coating, and the translational speed of induction coil
Parameter, realize and quick solid solution treatment or quenching heat treatment are carried out to the coating of unlike material and thickness；
3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water hardening processing；
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating 5
304 thick mm stainless steels；Steel plate is placed vertically, steel plate lower end is fixed with bench vice, induction coil is located at coating side, is placed in plate
Base lower end, induction coil and clad surface distance are 8.0mm, heating voltage 420V, field frequency 8.2kHz, induced-current
For 320A, heating power 134.4kW；During heating, induction coil is preheated first, preheating time 5s, then will sensing
Coil is moved with 100mm/min speed, and moving direction is bottom-up, while induction coil moves, by drainpipe（3）
Nozzle carry out water-spraying control, to coating carry out solution treatment.
3. a kind of sensing heating heat-treatment technology method of clad steel plate, it is characterized in that：Induction heating apparatus is：The biography of conveyer
Send roller（7）Upper end is provided with the bracket that can be moved up and down（1）, bracket（1）Lower horizontal direction is provided with several induction coils（4）, support
Frame（1）Side is vertically provided with number row exhaust duct（2）, exhaust duct（2）Lower end is provided with nozzle, exhaust duct（2）Side is provided with number
Row drainpipe（3）, drainpipe（3）Lower end is provided with nozzle, the exhaust duct nozzle and drainpipe nozzle direction and the line of induction
Circle（4）Direction is opposite；
Specific steps：The first step：Composite plate blanks are fixed on bottom plate or are placed in transfer roller by self gravitation（7）Upper end, make base
Plate（6）Towards transfer roller（7）, carry out layer（5）Towards induction coil（4）, adjust bracket（1）Make induction coil（4）With composite plate blanks
Keep certain distance；
Second step：Adjust the spacing distance of the power of induction coil, induction coil and coating, and the translational speed of induction coil
Parameter, realize and quick solid solution treatment or quenching heat treatment are carried out to the coating of unlike material and thickness；
3rd step：Sensing heating Technology for Heating Processing includes sensing warm-up phase, high temperature solid solution stage, water hardening processing；
Clad steel plate size is long 400 mm, wide 200 mm, the mm of gross thickness 30, and base material is the thick Q345R of 25 mm, coating 5
304 thick mm stainless steels；Steel plate is placed vertically, steel plate lower end is fixed with bench vice, induction coil is located at coating side, is placed in plate
Base lower end, induction coil and clad surface distance are 8.0mm, heating voltage 420V, field frequency 8.2kHz, induced-current
For 320A, heating power 134.4kW；During heating, induction coil is preheated first, preheating time 5s, then will sensing
Coil is moved with 120mm/min speed, and moving direction is bottom-up, while induction coil moves, by drainpipe（3）
Nozzle carry out water-spraying control, to coating carry out solution treatment.
Priority Applications (1)
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