CN101623823A - Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel - Google Patents
Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel Download PDFInfo
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- CN101623823A CN101623823A CN200910067145A CN200910067145A CN101623823A CN 101623823 A CN101623823 A CN 101623823A CN 200910067145 A CN200910067145 A CN 200910067145A CN 200910067145 A CN200910067145 A CN 200910067145A CN 101623823 A CN101623823 A CN 101623823A
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Abstract
A warm/hot forming technology of the invention organically integrates traditional stamping technology, forging technology and heat treatment technology, and provides an optimum manufacturing method for manufacturing more energy-saving and more secure key bearing parts, such as automotive bodies and chassis, etc. An automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel is an integrated manufacturing system which integrates collecting, blanking, heating, oxidation preventing, stamping, quenching, cooling, profile cutting and shot blasting, and ensures that the advanced manufacturing method can realize high-efficient, stable, reliable and continuous production. The production line comprises nine major parts, including a blanking mould, oxidation preventing decarbonization coating equipment at high temperature, a continuous flow line heating furnace, a high-temperature intelligent robot, a servo control press, a water-cooled stamping mould for quick cooling, an on-line quick detection control device, a laser or laser-like plasma cutting device, and shot blasting equipment, wherein the oxidation preventing decarbonization coating equipment at high-temperature, an energy-saving rotary hearth heating furnace system at the bottom of a ring-shaped furnace, the high-temperature intelligent robot, the water-cooled stamping mould for quick cooling and the on-line quick detection control device are the proprietary technology inventions of the system.
Description
Technical field
The present invention relates to be used for the electromechanical integration technology area that automobile lightweight high-intensity warm-hot formation of steel plate automation parts are produced.
Background technology
Warm forming technology (being also referred to as the drop stamping technology), it is a novel advanced manufacturing technology that is specifically designed to shaping high strength stamping parts, be that traditional stamping technology, FMT and heat treatment technics are organically combined, the machining manufacture of the best that provides for the crucial bearing part of making more energy-conservation, safer body of a motor car and chassis etc." automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel " then is that the manufacture method of guaranteeing this advanced person can realize high efficiency, stability and reliability quantity-produced colony material, heating, anti-oxidation, punching press, quench cooled, cut shape and bead etc. and be the integrated manufacturing software system of one.Embodied the international forward position new and high technology that machine adds, automatically controlled and chemical engineering of materials closely intersects.
Summary of the invention
Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel of the present invention (be called for short: hot forming is adorned from line) is by (1) blanking die, (2) high-temp antioxidizing decarburizing coating equipment, (3) Continuous Flow waterline heating furnace, (4) high-temperature intelligent robot, (5) SERVO CONTROL press, (6) the water-cooled diel of cooling fast, (7) on-line quick detection control device, (8) laser or class laser plasma cutting equipment, and (9) shot blasting equipment (handling if the hot forming plate is not done high-temp antioxidizing) 9 equips greatly and device constitutes successively.Wherein, (2), (3), (4), (6) and (7) item are core technology of the present invention, all the other every can purchases or consigned processing according to technical indicator enforcement of the present invention.
Each big equipment is described below successively:
(1) blanking die.Similar with traditional cold stamping blanking die.Be intended to for improving the utilization rate of high-strength steel sheet, reduce the workload that shape is cut on the drip molding border after the subsequent handling Quenching Treatment as far as possible, and then reduce the parts cost.
(2) high-temp antioxidizing decarburizing coating equipment.This is one of core technology of the present invention.Be intended to further guarantee warm forming product spare surface quality and quality stability.Coating material adds different nano particles and is mixed and made into high-temperature nano anti-oxidation decarburizing coating for warm-hot formation of steel plate at a certain temperature based on the compound of aluminium, element silicon, and this coating normal temperature is down for liquid.Under the normal temperature coating is evenly coated on the plate to be processed in a certain way, sends into subsequently and be heated to uniform austenitizing in the heating furnace of the present invention.Nano anti-oxidation decarburizing coating is attached on the plate to be processed under the condition of heating, thereby guarantees that plate prevents from not influence be shaped the afterwards follow-up welding and the coating performance of parts again in the high-temperature oxydation decarburization in the hot forming process.
(3) Continuous Flow waterline heating furnace.This is one of most crucial technology of the present invention.The present invention has designed the rotary hearth heating furnace system at the bottom of a kind of annular furnace of high-efficiency and energy-saving type, satisfies continuous productive temp and energy-conservation requirement when making in the warm forming production line the abundant austenitizing of sheet material, guarantees warm forming product quality and quality stability.Rotary hearth heating furnace at the bottom of the annular furnace comprises at the bottom of annular furnace and the rotating annular furnace that the electrothermal radiation tube heating is convenient to change.The burner hearth top is provided with pore, is used to feed gas with various and controls the furnace gas composition.In the heating furnace along the circumferential direction fire box temperature make four controlled humidity provinces, sector region over against the charging and discharging fire door is respectively preheating zone and soaking heat preservation zone, middle fan section is the thermal treatment zone of two different temperatures, and the temperature and the gas ingredients in each district can be controlled respectively.Adopt the refractory material sealing at the bottom of furnace roof and the annular furnace, adopt unique maze trough sealing between at the bottom of furnace roof and the annular furnace, also guaranteed heat-proof quality when having guaranteed sealing, and guaranteed that furnace bottom can flexibly and accurately rotate.Shell is welded by steel plate and shaped steel, and body of heater is made round by the close weldering of steel plate.Furnace bottom has rotary main shaft, it rotates by stepper motor and comes drive shaft to carry out through decelerator by bevel gear, under control of computer software and the interlock of the synchronous charging/discharging device of adjustable speed, controllably finish charging, the steel plate heating process of heating, discharging continuously with the productive temp of regulation.In the warm forming process, by the control software systems, the rotary hearth heating furnace duty of the annular furnace bottom of unified control guarantees the normal operation of converter.Adjust by the control step motor converter furnace bottom velocity of rotation and stop, rotating, open and close actions such as fire door accordingly; By the driving mechanism of control charging/discharging device, time beat, action, the blowing that guarantees this device got material level and put and accurately put in place and adjustable; By the temperature control algorithm of high efficiency smart, adjust the input power of each heating region in real time, accurately control the temperature of each heating region.Each control procedure above coordinating simultaneously guarantees the rotary hearth heating furnace efficiently and accurately, finishes the work such as fire door, charging, heating, insulation, discharging of closing of opening with guaranteeing the quality.
(4) high-temperature intelligent robot.One of core technology of the present invention.Be intended to the high temperature austenite steel plate in the heating furnace of hot forming streamline is put into press forming die quickly and accurately.Guarantee warm forming product spare quality and stability.The present invention has designed the automatic temperature measurement device, the wireless temperature testing sensor is placed on the robot arm, temperature variations in the online detection plate transmittance process, pass to total console according to the temperature information control arm rotating speed of temperature sensor collection and with temperature information by data wire, guarantee that the temperature decline of plate in the high temperature plate transmittance process is no more than prescribed limit.The high-temp antioxidizing catching of high-temperature intelligent robot for warm-hot formation is a tong-like and attached with netted, to prevent coming off of the excessive and plate of the power of catching in the transmittance process.The accurate navigation system of high temperature puma manipulator is put in robot arm with the accurate alignment sensor of high temperature and accurately locatees.
(5) SERVO CONTROL press.This is one of integrated system key equipment of the present invention.Can be according to the size and the hot forming maximum pressure of hot forming part, and guarantor's type quenches after the plate hot forming time set and shaping beat, entrust machine tool plant's custom-made, perhaps purchase common press and dispose Servocontrol device in addition.
(6) the water-cooled diel of cooling fast.This is another most crucial technology of the present invention.The objective of the invention is to hot-formed product part in conjunction with different 3D shapes, by different mould structure design, make temperature control heating and be in slab under the red soft state when die cavity is by press forging and forming, obtain the temperature conditions of quenching, thereby make high-intensity sheet part.Water-cooled mould of the present invention is made up of die ontology, intelligent temperature control element and external cooling back installation etc.Described die ontology comprises upper and lower bottom plate, matched moulds guide frame, holder part location structure, elasticity press material structure and lays De Leng They pipeline with the shape face of moulding embedded integral body or segmentation; Described intelligent temperature control element, control module that comprises the temperature sensor that is built in the different sections of die cavity, draws signal cable outside the mould, combines with external cooling back installation and multi-way stream are to, flow control valve; Described external cooling back installation comprises liquid tank, multipath hydraulic pump and respective line.The present invention system carries out the adaptability setting at difform three-dimensional part to location in the mould and press material structure, and simultaneously, also the cooling line to wall of die cavity provides rational distribution.Its effect is, though the product profile be flange (being flange) is arranged or do not have flange, be slab (refer to body of a motor car commonly used) or thin plate, be plutonic type or shallow moulding, all making high-intensity sheet part because of extremely strong personal settings according to warm forming die becomes reality.When warm forming, mould is in opening, and after hot soft board base was imported die cavity by intelligent robot, patrix was descending fast, slab under the impaction state of holding pad by punch and die moment shaping.Formation of parts will be in die cavity through pressurize and the Cooling Quenching process of several seconds, around here, sensor in the intelligent temperature control element is by detecting the die cavity temperature of different sections, through comparing with setting value, promptly send instruction in case exceed the Country value by detecting control signal output cable, make computer-controlled cooling fluid reservoir, multichannel circulation fluid press pump, and the integrated form multi-way stream to, the coordination of flow-control valve assembly etc., the control respective valves, by the flow of regulating cooling fluid and the purpose that flows to realization stable mode cavity temperature, mold open then, take out part, prepare to carry out next working cycles.The die body cavity of resorption is sealed to a complete liquid cools tank, can be used for assisting the cooling line that is provided with type, in the hope of obtaining best cooling effect.The upper and lower mould die cavity can be made integral body or inlaid type structure respectively according to the product proterties of different 3D shapes, and its corresponding cooling line also adopts the type that is cast into or processing mosaic equally respectively.
(7) on-line quick detection control device.This is another core technology of the present invention.Be intended to the warm forming production line is carried out the method and the device of quick online detection control, make the warm forming production line can quantitatively control and guarantee product quality and quality stability.This temperature online test control device is connected by welding, riveted joint and bonding mode the temperature test sensor with die surface and plate, and be connected with external control module and cooling device by holding wire, the temperature that can detect die surface, plate in the warm forming process is situation of change and regulate cooldown rate by controlled cooling device in time, the variations in temperature that makes mould, plate is within default scope, thereby the assurance plate fully quenches.Simultaneously said temperature data, control information will be stored, used for analyzing.The online tissue of warm forming parts, hardness, strength test method, technical characterictic is: do not destroying parts and do not influencing under the situation of productive temp in the warm forming tinuous production, the online detection of the method for frequency, wavelength and elastic bending by knocking sound the be shaped tissue, hardness, intensity etc. of back parts guarantee the online waste product that detects.In the warm forming tinuous production, do not destroying parts and do not influencing under the prerequisite of productive temp, by knocking parts and gathering its frequency of phonetic analysis, wavelength, with the method for default contrast; Judge the method for distortion size by applying elastic bending power; Whether the tissue of parts, hardness, intensity etc. were qualified after online detection was shaped, and will be admitted in the ash can automatically for underproof parts.
(8) laser or class laser plasma cutting equipment.This is another key equipment of integrated system of the present invention.Can according to production line and mould can punching press the full-size of hot forming part, directly purchase from specialized factory.
(9) shot blasting equipment.The shot-peening process is with the process of a large amount of pellet injections to the hot forming piece surface, to surperficial hammering, makes piece surface produce certain thickness flow harden layer just like countless hand hammers, is called surface strengthen layer, and this strengthening layer can improve the fatigue strength of part significantly.This equipment can directly be purchased according to the production demand.
Description of drawings
Below in conjunction with accompanying drawing each system of the present invention is further specified.
Fig. 1, for being used for the schematic diagram that steel plate is cut into the blanking die of blank.The hot forming plate blank that the arrow indication cuts out for the contour shape that launches according to part among the figure.Before the warm forming process, finish the production line first road blanking operation of the present invention according to the operation and the way of conventional cold-punching mould.
Fig. 2 is the schematic diagram of Continuous Flow waterline heating furnace.Blank and even formation of parts under computer system control, evenly are heated to the austenitizing of red heat through this procedure.
Fig. 3 is the high-temperature intelligent robot schematic diagram.Member 1 expression catching among the figure, member 2 expression mechanical arms are equipped with wireless temperature testing sensor, the accurate alignment sensor of high temperature and communication signal line in the mechanical arm.This equipment is responsible in the water-cooled mould on the servo exactly press bed face of the plate of austenitizing according to the productive temp requirement.
Fig. 4 is a SERVO CONTROL press schematic diagram.After installing the water-cooled mould,, realize the automation drawing by computer control hot forming speed and pressure.
Fig. 5 is for having the schematic diagram of the water-cooled mould of drop stamping and rapid quenching heat treatment function simultaneously concurrently.The arrow indication is the cooling water road junction among the figure.
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 6 a introduces a bodywork parts shaft side figure that flange, shallow recessing are arranged that adopts warm forming.
Fig. 6 b, Fig. 6 c are the cutaway view of die ontology of the present invention at diverse location.
Fig. 6 d is the schematic diagram that external cooling back installation of the present invention and control module combine.
In Fig. 6 b, Fig. 6 c and Fig. 6 d, be respectively by the ordering of piece number: 1. counterdie, 2. patrix, 3. holding pad, 4. guide plate, 5. sensor, 6. material returned nail, 7. spring, 8. location-plate, 9. lower mode cavity topping up seal cover board, 10. charge drain line, 11. and detect control signals output cables, 12. control module casees, 13. cooling fluid reservoirs, 14. multichannel circulation fluid press pumps, 15. integrated form multi-way stream and flow to out pipe row to, flow-control valve assembly, 16. liquid.
Fig. 7 is the on-line quick detection control device.On punch, die, cooling pipe, dispose temperature sensor, shown in Fig. 7 a.Fig. 7 b is the online tissue of warm forming parts of the present invention, hardness, strength test device schematic diagram, and member 1 is an augmentor among the figure, member 2 expressions parts to be measured, and member 3 is the parts bracing or strutting arrangement.
Fig. 8 is laser or class laser plasma cutting equipment schematic diagram.
Fig. 9 is a schematic diagram of not doing the hot forming part shot blasting on surface equipment of anti-oxidation processing.Be used for the hot forming part that quenches and carried out laser cutting is carried out removing surface, deburring, surface light decorations and ornamental shot-peening.This equipment can directly be purchased from producer.Then, general clamper is installed to adapt to the workpiece of different size.Minimum will be reduced to the process time of workpiece.The processing mode of automation control can combine with this system.
The specific embodiment
In high-strength steel sheet hot forming parts production process, blanking and last laser cutting three process can isolated operations.
Blanking process and traditional cold stamping blanking method are similar, can be with three figure place moulds of part by the blank shape on the more accurate deployment algorithm indication plane, cut out blank in batches in advance with blanking die again and store in batches, for the serialization production of subsequent handling provides initial woolen cloth.
The first procedure that anti-oxidation processing (if necessary) is produced as streamline will be put into the inoxidzable coating pond with the plate of manipulator after with blanking, and be evenly coated in a certain way on the plate to be processed.Then, put in the heating furnace by the blank of manipulator after again and heat, make it austenitizing equably coating.Nano anti-oxidation decarburizing coating is attached on the plate to be processed under the condition of heating.Thereby guarantee that plate does not influence the follow-up welding and the coating performance of the back parts that are shaped again when warm forming prevents the high-temperature oxydation decarburization.
After the hot forming plate was put into Continuous Flow waterline heating furnace by manipulator exactly according to productive temp, the sector region over against the charging fire door of the automatic revolving burner of annular heating will carry out preheating to blank automatically, then, and by the soaking heat preservation zone in the rotating shaft substitution stove.The temperature and the gas ingredients in stove Zhong Ge district can be controlled respectively.Adjust by the control step motor converter furnace bottom velocity of rotation and stop, rotating, open and close actions such as fire door accordingly; By the driving mechanism of control charging/discharging device, time beat, action, the blowing that guarantees this device got material level and put and accurately put in place and adjustable; By the temperature control algorithm of high efficiency smart, adjust the input power of each heating region in real time, accurately control the temperature of each heating region.Each control procedure above coordinating simultaneously guarantees the rotary hearth heating furnace efficiently and accurately, finishes the work such as fire door, charging, heating, insulation, discharging of closing of opening with guaranteeing the quality.The final acquisition by the blank of even austenitizing.
After blank heated austenitizing through heating furnace, temperature took out plate and put into fast the water-cooled mould like clockwork with high-temperature intelligent robot then and be shaped and quench in 800 ℃～1000 ℃ scopes.The wireless temperature testing sensor is placed on the arm of robot in this process, temperature variations in the online detection plate transmittance process, pass to total console according to the temperature information control arm rotating speed of temperature sensor collection and with temperature information by data wire, guarantee that the temperature decline of plate in the high temperature plate transmittance process is no more than prescribed limit; The main structure of catching simultaneously is tong-like and attachedly prevents coming off of the excessive and plate of the power of catching in the transmittance process with netted, is put in robot arm through the accurate alignment sensor of high temperature and accurately locatees, thereby guarantee the forming accuracy and the quality of warm forming spare.
After the press of opening and water-cooled mould received the plate of austenitizing, the implementation method of shaping and quenching process was described further in four little figure of Fig. 6.In the drawing period, the part 1 among Fig. 6 b, Fig. 6 c, part 2 (containing dress other part thereon respectively), after hot soft board base was imported into die cavity, patrix was descending fast, slab under the impaction state of holding pad by punch and die moment shaping.Formation of parts will be in die cavity through pressurize and the Cooling Quenching process of several seconds, around here, part 5 (sensor) in the intelligent temperature control element is by detecting the die cavity temperature of different sections, through comparing with setting value, promptly send instruction in case exceed the circle value by part 11 (detecting control signal output cable), make part 13 (cooling fluid reservoir), part 14 (multichannel circulation fluid press pump), part 15 (the integrated form multi-way stream to, flow-control valve assembly) moves, promptly control respective valves, by the flow of regulating cooling fluid and the purpose that flows to realization stable mode cavity temperature, mold open then, take out part, prepare to carry out next working cycles.Part 9 among Fig. 6 b, Fig. 6 c (lower mode cavity topping up seal cover board) then has been sealed to the die body cavity of resorption a complete liquid cools tank, can be used for assisting the cooling line that is provided with type, in the hope of obtaining best cooling effect.Upper and lower mould die cavity among Fig. 6 b and Fig. 6 c can be made integral body or inlaid type structure respectively according to the product proterties of different 3D shapes, and its corresponding cooling line also adopts the type that is cast into or processing mosaic equally respectively.
Part behind the quenching strengthening, after this can be transported to the laser cutting workshop in batch with conveyer or workshop logistics vehicles, adopt laser cutting machine or class laser plasma cutting machine that hot formed part is carried out the border cutting according to product requirement, qualified products can directly be transferred to the shot-peening workshop and carry out bead (if can exempt this step through the steel plate of anti-oxidation processing), then, enter logistics workshop or directly packing shipment.
Claims (1)
- Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel belongs to technological invention.Its major technique feature is:1. aluminium, silicon coating material add the warm-hot formation of steel plate high-temp antioxidizing decarburizing coating that different nano particles are mixed and made at a certain temperature.2. the rotary hearth heating furnace system at the bottom of the annular furnace of high-efficiency and energy-saving type.Can be more energy-conservation more than 30% than present international like product.3. the high-temperature intelligent robot that has automatic temperature measurement and online detection.4. have the water-cooled diel that intelligent temperature control element and external cooling back installation etc. are formed.5. the on-line quick detection control device that has online hot forming part tissue, hardness and intensity detection.
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| CN200910067145A CN101623823A (en) | 2009-06-22 | 2009-06-22 | Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel |
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| CN200910067145A CN101623823A (en) | 2009-06-22 | 2009-06-22 | Automatic production line for warm/hot forming complete equipment of energy-saving high-strength sheet steel |
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| CN102688944A (en) * | 2012-06-15 | 2012-09-26 | 江苏大学 | Adjustable heating and cooling integrated hot forming die |
| CN102873213A (en) * | 2012-10-21 | 2013-01-16 | 吉林大学 | Ultrahigh-strength steel plate local quenching and hardening forming die |
| CN102883834A (en) * | 2010-03-12 | 2013-01-16 | 大众汽车有限公司 | Method for producing a coolable moulding tool, and molding tool produced using said method |
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