CN107824678A - A kind of stamping module method of heating of martensite steel component without transfer - Google Patents
A kind of stamping module method of heating of martensite steel component without transfer Download PDFInfo
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- CN107824678A CN107824678A CN201710940172.0A CN201710940172A CN107824678A CN 107824678 A CN107824678 A CN 107824678A CN 201710940172 A CN201710940172 A CN 201710940172A CN 107824678 A CN107824678 A CN 107824678A
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- sensing heating
- sheet material
- heating
- martensite steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/083—Deburring
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses sensing heating press-processing method and modular unit of a kind of martensite steel component without transfer, the advanced manufacture of category metal and the moulding technical field that becomes second nature.First, sheet material is delivered in sensing heating storehouse using zigzag chain bed and carries out austenitizing, drafted technological parameter automatically and carry out sensing heating and be incubated；Then reuse zigzag chain bed and sheet material is sent into drop stamping storehouse；Operation is processed by hydraulic plate temperature cooling integrated control system；After the completion of punching press, final structural member is obtained by operations such as cutting, punching, beads.Sensing heating part uses modularized design in the present invention, can effectively solve the problem that the decline of plate temperature causes to cool down insufficient, the incomplete phenomenon of structural transformation in drop stamping rush transfer process.Producing region area can be reduced, production intensity is reduced, improve production efficiency, actual workflow is developed to flexibility, the processing to xenogenesis workpiece has good adaptability, has higher engineering application value.
Description
Technical field
The invention belongs to the sensing heating side of metal forming technical field, the more particularly to hot press-formed part of metal
Method.
Background technology：
Martensitic structure steel is a kind of unimach for being organized as single martensite, because of the mechanical property of its superelevation（It is reachable
More than 1400MPa）It is widely used in the lightweight manufacture of automobile and track traffic industry.However, the shaping of martensite steel
In manufacturing process, austenitizing need to be heated to first, and the plate feeding of red heat is had into punching press in the mould of cooling system
Shaping, while by the mould Cooling Quenching with Quick uniform cooling system, formed martensitic structure.
In recent years, drop stamping technology is as the new manufacture skill for being combined traditional heat treatment technics with cold punching technology
Art, it is widely used to the figuration manufacture of martensite steel.The technique first will processing sheet material in being heated to austenitizing in resistance furnace
More than temperature and it is incubated, is subsequently transferred to carry out punch forming in drop stamping special equipment.This kind of technique exists following at this stage
Problem,（1）Directly contacted with air with fast transfer stage, plate surface in martensite steel heating, and general martensite steel
Antioxygenic property is relatively low.Although surface oxidation just now can be reduced using means such as oxide covering protection by improving transfer velocity
Generation, but the oxidative phenomena of the process is still very prominent；（2）Current drop stamping technique, is mainly entered by optional equipment
Row heating and fast transfer operation, production line is longer, and manufacturing cycle length, production efficiency difference is low, is only capable of realizing single size sheet material
Manufacturing process, do not agree with flexible manufacturing theory of today；（3）Martensite steel requires harsh for heating condition, tradition heat
Stamping line typically uses the more gradient partition heatings of heating furnace, accurately to control the heating-up temperature of blank.However, the situation
Under, equipment energy resource consumption is big, and temperature dissipation be present in the transfer process equipped by heating furnace to punching press, stamping in progress
When, the control stability of temperature accuracy is poor, and yield rate is low.
In existing patent, a kind of stamping products conveying robot unit（CN201511011784.9）Pass through machinery
Structure is made that improvement to the heat loss problem in rush transfer process, but this is not completely eliminated to shadow caused by process in it
Ring.Induction heating apparatus（CN201210289026.3）In propose a kind of induction hardening equipment to the uniform heating of sheet material, should
Device can carry out uniform sensing heating to sheet material, but its closure is too strong, only independent induction heating apparatus, with drop stamping
Technology can not be cooperated, it is impossible to realize the figuration manufacture of the products such as martensite steel.
The content of the invention：
Based on above research background, the present invention proposes a kind of sensing heating of the martensite steel component without transfer-stamping side
Method and modular unit.This method can reduce producing region area, reduce production intensity, improve production efficiency, make reality
The workflow on border develops to flexibility, and the processing to xenogenesis workpiece has good adaptability, has higher engineer applied
Value.
In order to realize the above object the technical solution adopted in the present invention is as follows：
A kind of sensing heating-press-processing method of martensite steel component without transfer, it is characterised in that：
1) it is punched：The thick steel boards of 1 ~ 2mm are selected, slab are punched to correspondingly sized by being punched in advance, to process in next step；
2) sensing heating：Steel board is delivered in pressing equipment by saw blade conveyer belt, sensed in sensing heating module
Heating, makes sheet material be heated to more than austenitizing temperature, sensing heating parameter is according to extraneous SERVO CONTROL adjust automatically.Punching press is set
Standby intracavitary avoids producing oxidation using protective atmosphere；
3) drop stamping：Top punch-pin is pushed using hydraulic test, entered while ensureing that cavity temperature is identical with sheet material temperature
Row punching operation, to ensure in punching course, sheet material is always heat deformable state；While punch-pin pressure is kept, system is utilized
The cooling controller of system control, is rapidly and uniformly quenched to sheet material by cooling line, sheet material tissue is changed into uniform
Martensitic structure；
4) cut, punching；
5) bead：Workpiece surface is impacted using pill, removes surface oxide layer, and leaves residual pressure on surface and answers
Power layer is to improve the fatigue life of workpiece.
Preferably, step（2）Middle sensing heating process selected frequency is 200kHz ~ 300kHz, and heating-up temperature is 920 DEG C
~ 950 DEG C, soaking time is 2 ~ 5min；
Preferably, step（2）Middle sensing heating module adjusts replacing according to the sheet material shape being punched in advance；
Preferably, step（2）In protective atmosphere be nitrogen；
Preferably, step（3）Middle punching course mould carries out warm-up operation, heating-up temperature and sheet material temperature using Electric heating
Spend identical；Warm need to only be carried out once in continuous production operation；
Preferably, step（3）Middle quenching velocity is 80 DEG C/s ~ 110 DEG C/s, and cooling line should be to fully being optimized in sheet material
Design so that final martensite transfor mation amount>96%；
Preferably, step（4）In, if original plate is the martensite steel sheet material for having anti-oxidant coating, step need not be carried out
（5）；
Preferably, step（5）In, high speed pill material is ceramics or cast steel, and pellet diameters are 0.25mm ~ 2mm, and pill moves
Speed is 40 ~ 50m/s；
Preferably, step（2）In, if strip width is more than the width of upper and lower induction coil, the gusset line of induction should be coordinated
Circle facility heats to edge, reaches the effect of overall balanced heating.
The beneficial effects of the invention are as follows：1）The drop stamping for being used for martensite steel present invention introduces induction heating method manufactures,
And sensing heating and press molding equipment are subjected to integrated design, the heat time is substantially reduced, and eliminate traditional drop stamping
Transfer process in process resistance stove heat-Sheet Metal Forming Technology, effectively eliminate surface quality caused by martensite steel high temperature decarburization
Low phenomenon, fundamentally solves the oxidation protection problem of hot forming martensite steel component.
2）The present invention replaces the more gradient partition heating resistance stove heats of tradition using sensing heating, and firing rate is fast, is heated
Uniformly, production line length can be substantially reduced, reduces energy resource consumption, and improve production efficiency；On the other hand, the mould that the present invention designs
Block building mortion, it is the integrated apparatus for being combined sensing heating with drop stamping function phase, compared with the heat punching of conventional martensitic steel
Pressure, eliminates the transfer process in heating-Sheet Metal Forming Technology, and it is low to be substantially reduced even surface quality caused by elimination skin decarburization
Phenomenon, effectively solves the oxidation protection problem of martensite steel component, for improving the shaping quality of such component, improving intensity etc.
Level is significant；Meanwhile without installing fast transfer mechanical hand additional, manufacturing cost is effectively reduced, and reduce production district
Domain area, voluntarily optimizing line configuration for factory has positive effect, meets the theory of flexible manufacturing.
3）The present invention introduces modular design concept in traditional drop stamping equipment, enables relatively-stationary production line
Emergency response is made for product conversion, the replacing of relevant device can be completed in a short time, reduce actual production process
Middle supplier improves Production Gain for the demand of party in request's order stability；In addition, modularized equipment is being conveniently replaceable
Meanwhile the advantages of with being easy to dismount maintenance process, the user of the kind equipment can be made quickly to put into production, realize production
The further raising of benefit.
Brief description of the drawings：
Fig. 1 is the assembling diagrammatic elevation view of the present invention；
Fig. 2 is the sensing heating module left view of the present invention；
Fig. 3 is the process chart of the present invention；
Fig. 4 is the shaped component shape graph of present example 1；
Fig. 5 is the shaped component shape graph of present example 2；
Fig. 6 is the shaped component shape graph of present example 3；
In figure, 1- sensing heating self-servocontrol systems；2- load coils；3- heating cabinets；4- zigzag chain beds；5- is heat-insulated
Wall；6- hydraulic pressure-plate temperature-cooling integrated control system；7- hydraulic systems；8- punch-pin；9- cooling water channels；10- cavity plates；11- is heated
Door；12- plates；13- sensing heating module clamping slide rails；14- sides sensing heating module；15- sides sensing heating module
Slide rail.
Embodiment：
In order that one of ordinary skill in the art is better understood from technical scheme, with reference to the accompanying drawings and examples
Technical scheme is further described：
It should be noted that as shown in figure 1, in concrete technology flow process, insulated wall 5 is not related to motion, but need to play isolation air
And the effect of isolation heat, and requiring that heating door 11 coordinates closely with insulated wall 5, slip is smooth, and no gas leakage, leakage temperature etc. are existing
As.
As shown in Fig. 2 modular member of the present invention includes load coil 2, sensing heating module clamping slide rail 13, side
Side sensing heating module 14, side sensing heating module slide rail 15, coil module 2,14 is provided with slide rail 13,15 junctions
Guide wheel, this design the advantages of be：Due to insulated wall 5 and the setting of door 11 is heated, heating cabinet interior sealing performance itself is good,
The possibility that sheet material aoxidizes is low, and sensing heating process is small for sensing heating wheel track heat affecting, and sensing heating module uses
Long lifespan, dismounting is simple, is easy to flexible manufacturing to produce.
Embodiment one：Referring to the drawings shown in 1,2,3,4, a kind of sensing heating of the martensite steel component without transfer-strike out
Shape method and modular unit, comprise the following steps：
1) it is punched：The thick 30MnB5 of 1mm are selected to be punched without coating sheet material to 600mm X 350mm.
2) sensing heating：Using zigzag chain bed, by sensing heating in sheet material feeding induction heater, to 920 DEG C, induction coil is handed over
Frequency selects 300kHz, and nitrogen is passed through before heating makes its complete austenitizing as protective atmosphere, insulation 2min.
The detailed process of sensing heating is：Plate 12 is sent into sensing heating module by zigzag chain bed 4, heating process tool
Body parameter is according to the adjust automatically parameter of sensing heating module self-servocontrol system 1, and zigzag chain bed 4 is by plate in feeding process
After material 12 is sent into heating cabinets 3, the heating door 11 of tape thickness detection means closes, and is passed through nitrogen protection gas and by thickness data
Sensing heating self-servocontrol system 1 is fed back to, system sends parameter to each sensing heating after calculating corresponding data automatically
Coil (2,14) realizes sensing heating.
The specific work process of sensing heating self-servocontrol system is：The trigger switch when plate is completely fed in storehouse is thick
Degree monitoring device sheet thickness is identified, by after operating personnel's input material species with material relevant parameter in database
It is compared, heating-up temperature is determined according to respective material austenitizing temperature, the line of induction is corresponded to according to gained plate THICKNESS CALCULATION
Frequency and heating and thermal insulation time are enclosed, optimal processing parameter is obtained with this and felt sensing heating module is reached under data
It should heat.
Being selected in the present invention the advantages of zigzag chain bed conveying device is：During sensing heating, sheet material is not by external force shadow
Ring, itself do not have mobility, therefore zigzag chain bed can play the effect of support sheet material；Furthermore zigzag chain bed and sheet material
Originally as Multi-contact, approximate contact area can be considered as 0, and zigzag chain bed is perpendicular with induction coil heating direction in itself,
Therefore conveying device will not impact during sensing heating to the heating of sheet material in itself；In addition, zigzag chain bed takes in itself
Space is smaller, and processing is simple, is readily disassembled storage.
3) drop stamping：Using Electric heating, mould and punching press chamber are first heated to 920 DEG C of insulations, then by austenitizing
The sheet material of completion is sent directly into drop stamping module, and mold clamping force is slowly increased after Guan Bi mould to 300kN, subsequently enters pressurize rank
Section.By quick cooling control system, uniform, quick quenching is integrally carried out to sheet material using cooling water channel.Punching press is controlled to protect
The pressure time is 10s, and quenching cooling velocity is 60 DEG C/s.
The concrete operations of drop stamping are：After in feeding to punching press storehouse, by hydraulic pressure-plate temperature-cooling integrated control system 6 to liquid
Pressure system 7 sends and pushes instruction, pushes punch-pin 8, is slowly increased mold clamping force to plate 12 with being protected after 10 complete matched moulds of cavity plate
Pressure.After starting packing stage, feedback of the information to hydraulic pressure-plate temperature-cooling integrated control system 6 simultaneously sends cooling to cooling water channel 9
Instruction, and sheet material temperature is detected, it is 60 DEG C/s to control cooldown rate, is unloaded after being cooled to 25 DEG C.
The present invention the advantages of using hydraulic pressure-plate temperature-cooling integrated control system is：Plate temperature, punch-pin push mold clamping force, cooling speed
Rate three information coordinates the automated production that can realize drop stamping, and other software can be coordinated to realize to the automatic of various parts
Parameter setting, flexible manufacturing production can be achieved.
4) cut, punching：Trimming, punching are carried out to structural member by the way of high pressure waterjet.
5) bead：Ceramics ball carries out the bead of 100% covering to material, removes surface spikes, surface takes off
The defects of carbon, stressor layers.Pellet diameters are 0.25mm, and pill movement velocity is 50m/s.
Embodiment 2：Referring to the drawings shown in 1,2,3,5, a kind of sensing heating of the martensite steel component without transfer-stamping
Method and modular unit, comprise the following steps：
1) it is punched：The thick 22MnB5 of 1.5mm are selected to be punched without coating sheet material to 900mm X 300mm；
2) sensing heating：Sheet material is sent into induction heater to sensing heating is to 940 DEG C using zigzag chain bed, induction coil alternation
Frequency selects 250kHz, and nitrogen is passed through before heating makes its complete austenitizing as protective atmosphere, insulation 3min；
3) drop stamping：Using Electric heating, mould and punching press chamber are first heated to 940 DEG C of insulations, then by austenitizing
The sheet material of completion is sent directly into drop stamping module, and mold clamping force is slowly increased after Guan Bi mould to 300kN, subsequently enters pressurize rank
Section.By quick cooling control system, uniform, quick quenching is integrally carried out to sheet material using cooling water channel.Punching press is controlled to protect
The pressure time is 10s, and quenching cooling velocity is 80 DEG C/s；
4) cut, punching：Trimming, punching are carried out to structural member by the way of laser cutting；
5) bead：From cast steel ball to material carry out 100% covering bead, remove surface spikes, skin decarburization,
The defects of stressor layers.Pellet diameters are 1mm, and pill movement velocity is 40m/s.
Embodiment 3：Referring to the drawings shown in 1,2,3,6, a kind of sensing heating of the martensite steel component without transfer-stamping
Method and modular unit, comprise the following steps：
1) it is punched：30CrMnSiA thick selection 2mm has the anti-oxidation coating sheet materials of Al-Si, is punched to 900mm X
600mm；
2) sensing heating：Sheet material is sent into induction heater to sensing heating is to 950 DEG C using zigzag chain bed, induction coil alternation
Frequency selects 200kHz, and nitrogen is passed through before heating makes its complete austenitizing as protective atmosphere, insulation 3min；
3) drop stamping：Using Electric heating, mould and punching press chamber are first heated to 950 DEG C of insulations, then by austenitizing
The sheet material of completion is sent directly into drop stamping module, and mold clamping force is slowly increased after Guan Bi mould to 300kN, subsequently enters pressurize rank
Section.By quick cooling control system, uniform, quick quenching is integrally carried out to sheet material using cooling water channel.Punching press is controlled to protect
The pressure time is 10s, and quenching cooling velocity is 1100 DEG C/s；
Cut, punching：Trimming, punching are carried out to structural member by the way of plasma cut.And remove surface spikes.
Claims (9)
1. sensing heating-press-processing method of a kind of martensite steel component without transfer, it is characterised in that comprise the steps of：
Punching：The thick martensite steel sheet materials of 1 ~ 2mm are selected, slab are punched to correspondingly sized by being punched in advance, so as in next step
Processing；
Sensing heating：Martensite steel sheet material is delivered in pressing equipment by saw blade conveyer belt, carried out in sensing heating module
Sensing heating, sheet material is set to be heated to more than austenitizing temperature, sensing heating parameter is according to extraneous SERVO CONTROL adjust automatically, punching
Avoid producing using protective atmosphere in pressure equipment cavity and aoxidize；
Drop stamping：Top punch-pin is pushed using hydraulic test, carried out while ensureing that cavity temperature is identical with sheet material temperature
Punching operation, to ensure in punching course, sheet material is always heat deformable state；While punch-pin pressure is kept, system is utilized
The cooling controller of control, sheet material is rapidly and uniformly quenched by cooling line, sheet material tissue is changed into uniform
Martensitic structure；
Cut, punching；
Bead：Workpiece surface is impacted using pill, removes surface oxide layer, and residual compressive stress is left on surface
Layer is to improve the fatigue life of workpiece.
2. sensing heating-press-processing method and module of a kind of martensite steel component according to claim 1 without transfer
Makeup is put, it is characterised in that step（2）Middle sensing heating process selected frequency is 200kHz ~ 300kHz, heating-up temperature 920
DEG C ~ 950 DEG C, soaking time is 2 ~ 5min.
3. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：The step（2）Middle sensing heating module adjusts replacing according to the steel board shape being punched in advance.
4. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（2）In protective atmosphere be nitrogen.
5. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（3）Middle punching course mould carries out warm-up operation using Electric heating, and heating-up temperature is identical with sheet material temperature；
Warm need to only be carried out once in continuous production operation.
6. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（3）Middle quenching velocity is 80 DEG C/s ~ 110 DEG C/s, and cooling line carries out abundant optimization design for sheet material so that
Final martensite transfor mation amount>96%.
7. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（4）In, if original martensite steel sheet material is the martensite steel sheet material for having anti-oxidant coating, step need not be carried out
（5）.
8. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（5）In, the pill material for ceramics or cast steel, pellet diameters 0.25-2mm, pill movement velocity be 40 ~
50m/s。
9. sensing heating-press-processing method of a kind of martensite steel component without transfer according to claim 1, its feature
It is：Step（2）In, if strip width is more than the width of upper and lower induction coil, coordinate gusset induction coil facility opposite side
Portion is heated, and reaches the effect of overall balanced heating.
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|---|---|---|---|
| CN201710940172.0A CN107824678A (en) | 2017-10-11 | 2017-10-11 | A kind of stamping module method of heating of martensite steel component without transfer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069331A (en) * | 2019-12-18 | 2020-04-28 | 南京工程学院 | Device and method for controlling shape gradient of ultrahigh-strength steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111069331A (en) * | 2019-12-18 | 2020-04-28 | 南京工程学院 | Device and method for controlling shape gradient of ultrahigh-strength steel |
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