CN107900305A - A kind of production method of automobile control arm - Google Patents
A kind of production method of automobile control arm Download PDFInfo
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- CN107900305A CN107900305A CN201711451798.1A CN201711451798A CN107900305A CN 107900305 A CN107900305 A CN 107900305A CN 201711451798 A CN201711451798 A CN 201711451798A CN 107900305 A CN107900305 A CN 107900305A
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- China
- Prior art keywords
- control arm
- core
- mould
- pressure injection
- magnesium alloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of production method of automobile control arm, belong to technical field of automobile accessories, its concrete technology step includes, makes semi-solid state extrusion mould, is die-filling successively, raw material preheating, melt, material feeding, extruding note casting, extrusion casint, mould unloading, detection, heat treatment, linkage motion cutting, cleaning, differential arc oxidation, external coating；Its advantage is to make automobile control arm using magnesium alloy materials, it, which integrates damping effect, can reach 30 times of aluminium alloy；The weight of control arm is alleviated on the basis of Performance Strength is ensured at the same time, automotive light weight technology requirement is met, can effectively reduce energy consumption；Wherein use composite forming die can to greatly reduce micropore and gap to adjust the shape of casting in press casting procedure, according to the shape facility of control arm, from three directions at the same time to die cavity pressure injection, cavity can be quickly filled with, reduce flaw；Using semisolid method and process of passing through tunnel formula heat treatment method, tensile strength and fatigue resistance can be greatly improved.
Description
Technical field
The present invention relates to technical field of automobile accessories, particularly a kind of production method of automobile control arm.
Background technology
Motor turning control arm is for connecting the component between spindle and automobile front axle, is arrived for transmitting torque
Front axle makes Vehicular turn, it is therefore desirable to which control arm has enough rigidity, intensity and service life.
Existing control arm main part is to fasten the hollow welded and formed by molding plate, and has bulb and control arm master
By being welded and fixed combination between part.Control arm is installed on by flexible bushing on the suspension of vehicle body, so that by wheel
Stress be transferred to vehicle body, it will not only bear light weight and load, the vibrations of road pavement also be answered, due to the machinery of welding
Insufficient strength, it is possible to cause the failure of bulb and the mutual dialysis of control arm main part.Although such case is mostly sporadic, but still
As the big hidden danger for influencing automotive safety.
Due to the advantages that magnesium alloy has the damped coefficient that density is small, specific strength is high, good, and damping property is good, become
Very important light weight material in automobile；Use magnesium alloy materials to be made with integration, so as to avoid welding, increase rigidity and
Intensity, while can also mitigate weight.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned technical problem, there is provided one kind is made of magnesium alloy materials
Integration control arm, to avoid welding, and increase rigidity and intensity, mitigate weight.
In order to solve the above technical problems, the technical solution adopted in the present invention is a kind of production method of automobile control arm,
Workshop section is refined and is surface-treated including preparation mould, preparation material, semisolid pressure casting, linkage, it is characterised in that the specific work
Skill step is as follows successively.
(1) semi-solid state extrusion mould is made, and the semi-solid state extrusion mould is by moving-mould-core and cover half core and composite molding core rod
Form, make moving-mould-core, cover half core and composite molding core rod first, and cause the moving-mould-core, cover half core and composite molding core rod
The shape of the mould cavity formed after molding and the global shape of automobile control arm match；Cover half core is poured equipped with three masters
Mouthful, three positioned at control arm connect end position respectively；The semi-solid state extrusion mould uses hot-work die steel making.
(2) it is die-filling, it is described it is die-filling be by moving-mould-core be installed on die casting machine dynamic model frame on, cover half core is installed on die casting machine
Model frame on；By composite molding core rod be installed on it is compound it is framed in, it is compound it is framed installed in the top of model frame and with secondary pressure
The piston rod connection of oil cylinder；Start the die cylinder of die casting machine, promote moved cross beam, drive moving-mould-core downward stroke, it is and compound
Formation die core and cover half core are molded, and form mould cavity.
(3) raw material preheat, and raw material magnesium alloy particle preheated 20-30min at 140-160 DEG C at a temperature of first, then
20-30min is preheated at a temperature of 400-450 DEG C, and is kept the temperature.
(4) the magnesium alloy particles after preheating, are placed in vacuum melting furnace and closed, the general at a temperature of 575-585 DEG C by melt
Magnesium alloy particles are fused into semisolid molten and keep the temperature, and obtain semi-solid magnesium alloy.
(5) material feeding：Start the batch plant on vacuum melting furnace, semi-solid magnesium alloy is injected into by pressure by expects pipe
In filling barrel.
(6) extruding note casting, starts the pressure injection oil cylinder in three orientation in die casting machine, promotes the pressure injection punching in three injecting units
Head is promoted to mould cavity at the same time from three directions, in semi-solid magnesium alloy pressure injection to mould cavity and will be molded；Pressed during pressure injection
Pressure injection is completed using three sections of pressure injection speed according to pressure injection stroke, wherein first segment stroke is the 1/2 of full section stroke, by punch pressure injection speed
Degree control is in the range of 100-150 mm/seconds；Second segment stroke is the 1/3 of full section stroke, and punch pressure injection speed control is existed
In the range of 200-250 mm/seconds；3rd section of stroke is the 1/6 of full section stroke, by punch pressure injection speed control in 300-350 millis
In the range of meter per second；Then punch pressurizes, and by the control of pressure injection power in the range of 2500-2750KN, and keep constant voltage time 9-11
Second.
(7) extrusion casint, starts the secondary compressing cylinder of die casting machine, pulls composite molding core rod casting mold, while die casting owner's pressure oil
Cylinder promotes moving-mould-core downlink, moving-mould-core combination composite molding core rod is further molded with cover half core, die casting ratio pressure 1000-
1050Bar, die casting Stroke Control is at 0.5-1.5 millimeters, and then main compressing cylinder carries out pressurize, dwell time 20-30 second.
(8) mould unloading, forging is cooled to 380-400 DEG C, then starts main compressing cylinder and pressure injection oil cylinder successively, exits
Diecasting punching head and pressure injection punch, restart die cylinder and lift movable mold backboard, moving-mould-core and composite molding core rod are separated,
Restart secondary compressing cylinder to separate composite molding core rod and cover half core, then start ejection cylinder, promote mandril by casting and forging molding
Forging ejection, forging is then taken out by robot, obtains blank automobile control arm.
(9) detect, blank magnesium alloy control arm is detected, defective work is subjected to reworked processing, certified products are into traveling
One step is processed；Specifically blank magnesium alloy control arm is detected, by the blank magnesium alloy control arm for having micropore or gap into
Row reworked processing.
(10) it is heat-treated, blank magnesium alloy control arm certified products is cooled down, trimming, is then placed in tunnel type heat-treatment furnace,
Vacuumize process is carried out first, is then filled tunnel type heat-treatment furnace with inert gas, is closed after air pressure in stove reaches normal pressure
Air inlet, by heat temperature raising in furnace body；When furnace body temperature reaches 455-465 DEG C, start to keep the temperature casting, soaking time
For 2.5-3.5 it is small when；Then heat-treatment furnace is opened, blank magnesium alloy control arm is put into 75-85 DEG C of water and is carried out at quenching
Reason, when 2.5-3.5 is small after carry out ageing treatment, aging temperature is 175-185 DEG C, and aging time is small for 2.5-3.5
When, obtain just base magnesium alloy control arm.
(11) linkage motion cutting, qualified first base magnesium alloy control arm is stood plus is used by four axis or 5-shaft linkage numerical control center
Dividing head and side milling head complete all machining operations in clamped one time, obtain smart base magnesium alloy control arm.
(12) clean, smart base magnesium alloy control arm is subjected to cleaning showers, is cleaned except degreasing, then with ultrasonic wave.
(13) differential arc oxidation, smart base magnesium alloy control arm is inserted in the electrolyte that voltage is 380V-420V and carries out differential of the arc oxygen
Change processing 8-12min minutes, differential arc oxidation film layer is reached 13-16 μm.
(14) external coating, electrophoretic coating is carried out or polishing of dusting after carrying out cleaning showers in the outer surface of micro-arc oxidation films again
Processing；Then cured after cleaning again, solidification temperature is 180-200 DEG C, and hardening time 18-22min, obtains magnesium alloy control
Arm processed.
A kind of die casting machine for producing blank magnesium alloy control arm, the die casting machine are equipped with dynamic model, cover half and pressure injection mechanism；
The dynamic model includes the dynamic model frame being fixed on the moved cross beam of die casting machine and the die casting punching for being arranged on dynamic model outer frame centre of surface
The piston rod connection of head, the top of diecasting punching head and the main compressing cylinder of die casting machine；The cover half includes being arranged on the work of die casting machine
Make the model frame on platform, it is characterised in that compound die is additionally provided between the dynamic model and cover half, the compound die includes compound die
The piston rod of frame and connected die casting machine pair compressing cylinder, it is compound it is framed in be provided with composite molding core rod；The dynamic model
Moving-mould-core is provided with frame；Cover half core is equipped with the model frame, the cover half core is equipped with three main cast gates, respectively positioned at control
Three connection end positions of arm processed；The moving-mould-core after composite molding core rod and the molding of cover half core with forming mould cavity, the mould
Have cavity shape and the form fit of control arm；The model frame and cover half in-core are provided with mobilizable mandril, the mandril
It is connected with the piston rod of the ejection cylinder of die casting machine；The top of the diecasting punching head is equipped with 0.5-1.5 millimeters of die casting stroke；Institute
Stating pressure injection mechanism includes three sets of injecting units, and three sets of injecting units are separately positioned on the side of three main cast gates of cover half core, pressure
Dispensing device includes pressure injection barrel and the pressure injection punch being arranged in pressure injection barrel, one end of the pressure injection barrel and the master of cover half core
Cast gate is connected, the piston rod connection of one end of the pressure injection punch and the pressure injection oil cylinder of die casting machine.
The beneficial effects of the invention are as follows automobile control arm is made using magnesium alloy materials, damping effect ensure that first, by
30-60% is reached in the dampening factor of magnesium alloy, and the dampening factor of aluminium alloy only has 2-5%, plus globality semisolid pressure casting, its
Comprehensive damping effect can reach 30 times of aluminium alloy；The weight of control arm is alleviated on the basis of Performance Strength is ensured at the same time
Amount, meets automotive light weight technology requirement, can effectively reduce energy consumption；Use and be combined into wherein in semisolid pressure casting method
Pattern can not only complete the precise shapes of casting with the shape of adjustment casting in press casting procedure in die cavity, can also be really
Protect and improve the rigidity and intensity of control arm on the whole, progressively pressure injection can greatly reduce micropore and gap, according to control arm
Shape facility, from three directions at the same time to die cavity pressure injection, can quickly fill with cavity, reduce flaw；Using semisolid method simultaneously
Process of passing through tunnel formula heat treatment method, can greatly improve tensile strength and fatigue resistance.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the dynamic model, cover half and the pressure injection mechanism that are used in the present invention.
Fig. 2 is the decomposition texture schematic diagram of the semi-solid state extrusion mould used in the present invention.
In figure：1. the piston rod of dynamic model, 2. cover half, 3. pressure injection mechanisms, 4. dynamic model frames, 5. diecasting punching heads, 6. main compressing cylinders,
7. model frame, 8. compound dies, 9. compound framed, 10. secondary compressing cylinders piston rods, 11. composite molding core rods, 12. moving-mould-cores,
13. cover half core, 14. main cast gates, 15. mould cavities, 16. mandrils, the piston rod of 17. ejection cylinders, 18. injecting units, 19. pressures
Filling barrel, 20. pressure injection punches, the piston rod of 21. pressure injection oil cylinders.
Embodiment
With reference to embodiment, the invention will be further described, and following embodiments are intended to illustrate invention rather than to this
The further restriction of invention, should not be limited the scope of the invention with this.
As shown in the figure, a kind of die casting machine for producing blank magnesium alloy control arm of installing, which is equipped with dynamic model 1, determines
Mould 2 and pressure injection mechanism 3；The dynamic model 1 includes the dynamic model frame 4 being fixed on the moved cross beam of die casting machine and is arranged on dynamic model frame 4
The piston rod 6 of the diecasting punching head 5 at outer surface center, the top of diecasting punching head 5 and the main compressing cylinder of die casting machine connects；The cover half
2 model frames 7 including being arranged on the workbench of die casting machine, it is characterised in that be additionally provided between the dynamic model 1 and cover half 2 compound
Mould 8, piston rod 10 of the compound die 8 including compound framed 9 and connected die casting machine pair compressing cylinder, compound framed 9
Inside it is provided with composite molding core rod 11；Moving-mould-core 12 is provided with the dynamic model frame 4；Cover half core 13 is equipped with the model frame 7,
The cover half core 13 is equipped with three main cast gates 14, this three main cast gates 14 are respectively positioned at three connecting pins of molding control arm position
Put；The moving-mould-core 12 forms mould cavity 15 after being molded with composite molding core rod 11 and cover half core 13, the mould cavity 15
The form fit of shape and control arm；Mobilizable mandril 16, the mandril 16 are provided with the model frame 7 and cover half core 13
It is connected with the piston rod 17 of the ejection cylinder of die casting machine；The top of the diecasting punching head 5 is equipped with 0.5-1.5 millimeters of die casting row
Journey；The pressure injection mechanism 3 includes three sets of injecting units 18, and three masters that three sets of injecting units 18 are separately positioned on cover half core 13 pour
The lateral surface of mouth 14, injecting unit 18 include pressure injection barrel 19 and the pressure injection punch 20 being arranged in pressure injection barrel, the pressure injection
One end of barrel 19 is connected with the main cast gate 14 of cover half core 13, one end of the pressure injection punch 20 and the pressure injection oil cylinder of die casting machine
Piston rod 21 connect.
Embodiment 1.
As shown in the figure, a kind of magnesium alloy auto control arm of new-energy automobile is produced, including preparation mould, preparation material
Material, semisolid pressure casting, linkage is refined and surface treatment workshop section, concrete technology step are as follows successively.
(1) semi-solid state extrusion mould is made, and the semi-solid state extrusion mould is by moving-mould-core 12 and cover half core 13 and composite molding
Core rod 11 is formed, and makes moving-mould-core 12, cover half core 13 and composite molding core rod 11 first, and cause the moving-mould-core 12, cover half core
13 and composite molding core rod 13 mold after the shape of mould cavity 15 that is formed it is identical with the global shape of automobile control arm；It is fixed
Core rod 13 is equipped with three main cast gates 14, and three positioned at control arm connect end position respectively；The semi-solid state extrusion mould is adopted
With hot-work die steel making.
(2) it is die-filling, it is described it is die-filling be by moving-mould-core 12 be installed on die casting machine dynamic model frame 4 on, by cover half core 13 be installed on pressure
In the model frame 7 of casting machine；Composite molding core rod 11 is installed in compound framed 9, compound framed 9 are installed on the upper of model frame 7
The piston rod 10 of Fang Bingyu pair compressing cylinders connects；Start die casting machine die cylinder, promote moved cross beam, drive moving-mould-core 12 to
Down stroke, is molded with composite molding core rod 11 and cover half core 13, forms mould cavity 15.
(3) raw material preheat, and AZ91 raw material magnesium alloys particle is preheated 20min at a temperature of at 140 DEG C first, then 400
20min is preheated at a temperature of DEG C, and is kept the temperature.
(4) melt, the magnesium alloy particles after preheating is placed in vacuum melting furnace and closed, closes magnesium at a temperature of 575 DEG C
Gold grain is fused into semisolid molten and keeps the temperature, and obtains semi-solid magnesium alloy.
(5) material feeding：Start the batch plant on vacuum melting furnace, semi-solid magnesium alloy is injected into by pressure by expects pipe
In filling barrel 19.
(6) extruding note casting, starts the pressure injection oil cylinder in three orientation in die casting machine, promotes the pressure injection in three injecting units 18
Punch 20 is promoted to mould cavity 15 at the same time from three directions, and semi-solid magnesium alloy pressure injection is interior to mould cavity 15 and be molded；
Pressure injection is completed using three sections of pressure injection speed according to pressure injection stroke during pressure injection, wherein first segment stroke is the 1/2 of full section stroke, will be rushed
Head pressure injection speed control is 100 mm/seconds；Second segment stroke is the 1/3 of full section stroke, is 200 by punch pressure injection speed control
Mm/second；3rd section of stroke is the 1/6 of full section stroke, is 300 mm/seconds by punch pressure injection speed control；Then punch adds
Pressure, and be 2500KN by the control of pressure injection power, and keep constant voltage time 9 seconds.
(7) extrusion casint, starts the secondary compressing cylinder of die casting machine, pulls composite molding core rod 11 to carry out casting mold, while die casting machine
Main compressing cylinder promotes 12 downlink of moving-mould-core, moving-mould-core 12 is combined composite molding core rod 11 and is further molded with cover half core 13, is pressed
Than pressure 1000Bar, die casting stroke is 0.5 millimeter for casting, and then main compressing cylinder carries out pressurize, 20 seconds dwell times.
(8) mould unloading, forging is cooled to 380 DEG C, then starts main compressing cylinder and pressure injection oil cylinder successively, exits die casting
Punch 5 and pressure injection punch 20, restart die cylinder and lift movable mold backboard, moving-mould-core 12 and composite molding core rod 11 are divided
Open, restart secondary compressing cylinder and separate composite molding core rod 11 and cover half core 13, then start ejection cylinder, promote mandril 16 will
The forging ejection of casting and forging molding, then takes out forging by robot, obtains blank automobile control arm.
(9) detect, blank magnesium alloy control arm is detected, defective work is subjected to reworked processing, certified products are into traveling
One step is processed；Specifically blank magnesium alloy control arm is detected, by the blank magnesium alloy control arm for having micropore or gap into
Row reworked processing.
(10) it is heat-treated, blank magnesium alloy control arm certified products is cooled down, trimming, is then placed in tunnel type heat-treatment furnace,
Vacuumize process is carried out first, is then filled tunnel type heat-treatment furnace with inert gas, is closed after air pressure in stove reaches normal pressure
Air inlet, by heat temperature raising in furnace body；When furnace body temperature reaches 455 DEG C, start to keep the temperature casting, soaking time is
2.5 it is small when；Then open heat-treatment furnace, blank magnesium alloy control arm be put into 75 DEG C of water and carries out quenching treatment, 2.5 it is small when
After carry out ageing treatment, aging temperature is 175 DEG C, aging time for 2.5 it is small when, obtain just base magnesium alloy control
Arm.
(11) linkage motion cutting, qualified first base magnesium alloy control arm is stood plus is used by four axis or 5-shaft linkage numerical control center
Dividing head and side milling head complete all machining operations in clamped one time, obtain smart base magnesium alloy control arm.
(12) clean, smart base magnesium alloy control arm is subjected to cleaning showers, is cleaned except degreasing, then with ultrasonic wave.
(13) differential arc oxidation, smart base magnesium alloy control arm is inserted in the electrolyte that voltage is 380V and carries out differential arc oxidation processing
8min minutes, make differential arc oxidation film layer up to 13 μm.
(14) external coating, electrophoretic coating is carried out or polishing of dusting after carrying out cleaning showers in the outer surface of micro-arc oxidation films again
Processing；Then cured after cleaning again, solidification temperature is 180 DEG C, and hardening time 18min, obtains magnesium alloy control arm.
Embodiment 2.
As shown in the figure, a kind of magnesium alloy auto control arm of new-energy automobile is produced, including preparation mould, preparation material
Material, semisolid pressure casting, linkage is refined and surface treatment workshop section, concrete technology step are as follows successively.
(1) semi-solid state extrusion mould is made, and the semi-solid state extrusion mould is by moving-mould-core 12 and cover half core 13 and composite molding
Core rod 11 is formed, and makes moving-mould-core 12, cover half core 13 and composite molding core rod 11 first, and cause the moving-mould-core 12, cover half core
13 and composite molding core rod 13 mold after the shape of mould cavity 15 that is formed it is identical with the global shape of automobile control arm；It is fixed
Core rod 13 is equipped with three main cast gates 14, and three positioned at control arm connect end position respectively；The semi-solid state extrusion mould is adopted
With hot-work die steel making.
(2) it is die-filling, it is described it is die-filling be by moving-mould-core 12 be installed on die casting machine dynamic model frame 4 on, by cover half core 13 be installed on pressure
In the model frame 7 of casting machine；Composite molding core rod 11 is installed in compound framed 9, compound framed 9 are installed on the upper of model frame 7
The piston rod 10 of Fang Bingyu pair compressing cylinders connects；Start die casting machine die cylinder, promote moved cross beam, drive moving-mould-core 12 to
Down stroke, is molded with composite molding core rod 11 and cover half core 13, forms mould cavity 15.
(3) raw material preheat, and AZ91 raw material magnesium alloys particle is preheated 25min at a temperature of at 150 DEG C first, then 425
25min is preheated at a temperature of DEG C, and is kept the temperature.
(4) melt, the magnesium alloy particles after preheating is placed in vacuum melting furnace and closed, closes magnesium at a temperature of 580 DEG C
Gold grain is fused into semisolid molten and keeps the temperature, and obtains semi-solid magnesium alloy.
(5) material feeding：Start the batch plant on vacuum melting furnace, semi-solid magnesium alloy is injected into by pressure by expects pipe
In filling barrel 19.
(6) extruding note casting, starts the pressure injection oil cylinder in three orientation in die casting machine, promotes the pressure injection in three injecting units 18
Punch 20 is promoted to mould cavity 15 at the same time from three directions, and semi-solid magnesium alloy pressure injection is interior to mould cavity 15 and be molded；
Pressure injection is completed using three sections of pressure injection speed according to pressure injection stroke during pressure injection, wherein first segment stroke is the 1/2 of full section stroke, will be rushed
Head pressure injection speed control is 125 mm/seconds；Second segment stroke is the 1/3 of full section stroke, is 225 by punch pressure injection speed control
Mm/second；3rd section of stroke is the 1/6 of full section stroke, is 325 mm/seconds by punch pressure injection speed control；Then punch adds
Pressure, and be 2633KN by the control of pressure injection power, and keep constant voltage time 10 seconds.
(7) extrusion casint, starts the secondary compressing cylinder of die casting machine, pulls composite molding core rod 11 to carry out casting mold, while die casting machine
Main compressing cylinder promotes 12 downlink of moving-mould-core, moving-mould-core 12 is combined composite molding core rod 11 and is further molded with cover half core 13, is pressed
Than pressure 1037Bar, die casting Stroke Control is 1.0 millimeters for casting, and then main compressing cylinder carries out pressurize, 25 seconds dwell times.
(8) mould unloading, forging is cooled to 390 DEG C, then starts main compressing cylinder and pressure injection oil cylinder successively, exits die casting
Punch 5 and pressure injection punch 20, restart die cylinder and lift movable mold backboard, moving-mould-core 12 and composite molding core rod 11 are divided
Open, restart secondary compressing cylinder and separate composite molding core rod 11 and cover half core 13, then start ejection cylinder, promote mandril 16 will
The forging ejection of casting and forging molding, then takes out forging by robot, obtains blank automobile control arm.
(9) detect, blank magnesium alloy control arm is detected, defective work is subjected to reworked processing, certified products are into traveling
One step is processed；Specifically blank magnesium alloy control arm is detected, by the blank magnesium alloy control arm for having micropore or gap into
Row reworked processing.
(10) it is heat-treated, blank magnesium alloy control arm certified products is cooled down, trimming, is then placed in tunnel type heat-treatment furnace,
Vacuumize process is carried out first, is then filled tunnel type heat-treatment furnace with inert gas, is closed after air pressure in stove reaches normal pressure
Air inlet, by heat temperature raising in furnace body；When furnace body temperature reaches 460 DEG C, start to keep the temperature casting, soaking time 3
Hour；Then heat-treatment furnace is opened, blank magnesium alloy control arm is put into 80 DEG C of water and carries out quenching treatment, 3 is laggard when small
Row ageing treatment, aging temperature are 180 DEG C, when aging time is 3 small, obtain just base magnesium alloy control arm.
(11) linkage motion cutting, qualified first base magnesium alloy control arm is stood plus is used by four axis or 5-shaft linkage numerical control center
Dividing head and side milling head complete all machining operations in clamped one time, obtain smart base magnesium alloy control arm.
(12) clean, smart base magnesium alloy control arm is subjected to cleaning showers, is cleaned except degreasing, then with ultrasonic wave.
(13) differential arc oxidation, smart base magnesium alloy control arm is inserted in the electrolyte that voltage is 400V and carries out differential arc oxidation processing
10min minutes, make differential arc oxidation film layer up to 15 μm.
(14) external coating, electrophoretic coating is carried out or polishing of dusting after carrying out cleaning showers in the outer surface of micro-arc oxidation films again
Processing；Then cured after cleaning again, solidification temperature is 190 DEG C, and hardening time 20min, obtains magnesium alloy control arm.
Embodiment 3.
As shown in the figure, a kind of magnesium alloy auto control arm of new-energy automobile is produced, including preparation mould, preparation material
Material, semisolid pressure casting, linkage is refined and surface treatment workshop section, concrete technology step are as follows successively.
(1) semi-solid state extrusion mould is made, and the semi-solid state extrusion mould is by moving-mould-core 12 and cover half core 13 and composite molding
Core rod 11 is formed, and makes moving-mould-core 12, cover half core 13 and composite molding core rod 11 first, and cause the moving-mould-core 12, cover half core
13 and composite molding core rod 13 mold after the shape of mould cavity 15 that is formed it is identical with the global shape of automobile control arm；It is fixed
Core rod 13 is equipped with three main cast gates 14, and three positioned at control arm connect end position respectively；The semi-solid state extrusion mould is adopted
With hot-work die steel making.
(2) it is die-filling, it is described it is die-filling be by moving-mould-core 12 be installed on die casting machine dynamic model frame 4 on, by cover half core 13 be installed on pressure
In the model frame 7 of casting machine；Composite molding core rod 11 is installed in compound framed 9, compound framed 9 are installed on the upper of model frame 7
The piston rod 10 of Fang Bingyu pair compressing cylinders connects；Start die casting machine die cylinder, promote moved cross beam, drive moving-mould-core 12 to
Down stroke, is molded with composite molding core rod 11 and cover half core 13, forms mould cavity 15.
(3) raw material preheat, and take AZ91 raw material magnesium alloy particulate materials, 30min is preheated at a temperature of at 160 DEG C first, then
30min is preheated at a temperature of 450 DEG C, and is kept the temperature.
(4) melt, the magnesium alloy particles after preheating is placed in vacuum melting furnace and closed, closes magnesium at a temperature of 585 DEG C
Gold grain is fused into semisolid molten and keeps the temperature, and obtains semi-solid magnesium alloy.
(5) material feeding：Start the batch plant on vacuum melting furnace, semi-solid magnesium alloy is injected into by pressure by expects pipe
In filling barrel 19.
(6) extruding note casting, starts the pressure injection oil cylinder in three orientation in die casting machine, promotes the pressure injection in three injecting units 18
Punch 20 is promoted to mould cavity 15 at the same time from three directions, and semi-solid magnesium alloy pressure injection is interior to mould cavity 15 and be molded；
Pressure injection is completed using three sections of pressure injection speed according to pressure injection stroke during pressure injection, wherein first segment stroke is the 1/2 of full section stroke, will be rushed
Head pressure injection speed control is 150 mm/seconds；Second segment stroke is the 1/3 of full section stroke, is 250 by punch pressure injection speed control
Mm/second；3rd section of stroke is the 1/6 of full section stroke, is 350 mm/seconds by punch pressure injection speed control；Then punch adds
Pressure, and be 2750KN by the control of pressure injection power, and keep constant voltage time 11 seconds.
(7) extrusion casint, starts the secondary compressing cylinder of die casting machine, pulls composite molding core rod 11 to carry out casting mold, while die casting machine
Main compressing cylinder promotes 12 downlink of moving-mould-core, moving-mould-core 12 is combined composite molding core rod 11 and is further molded with cover half core 13, is pressed
Than pressure 1050Bar, die casting Stroke Control is 1.5 millimeters for casting, and then main compressing cylinder carries out pressurize, 30 seconds dwell times.
(8) mould unloading, forging is cooled to 400 DEG C, then starts main compressing cylinder and pressure injection oil cylinder successively, exits die casting
Punch 5 and pressure injection punch 20, restart die cylinder and lift movable mold backboard, moving-mould-core 12 and composite molding core rod 11 are divided
Open, restart secondary compressing cylinder and separate composite molding core rod 11 and cover half core 13, then start ejection cylinder, promote mandril 16 will
The forging ejection of casting and forging molding, then takes out forging by robot, obtains blank automobile control arm.
(9) detect, blank magnesium alloy control arm is detected, defective work is subjected to reworked processing, certified products are into traveling
One step is processed；Specifically blank magnesium alloy control arm is detected, by the blank magnesium alloy control arm for having micropore or gap into
Row reworked processing.
(10) it is heat-treated, blank magnesium alloy control arm certified products is cooled down, trimming, is then placed in tunnel type heat-treatment furnace,
Vacuumize process is carried out first, is then filled tunnel type heat-treatment furnace with inert gas, is closed after air pressure in stove reaches normal pressure
Air inlet, by heat temperature raising in furnace body；When furnace body temperature reaches 465 DEG C, start to keep the temperature casting, soaking time is
3.5 it is small when；Then heat-treatment furnace is opened, blank magnesium alloy control arm is put into 85 DEG C of water and carries out quenching treatment, 3.5 is small
When after carry out ageing treatment, aging temperature is 185 DEG C, aging time for 3.5 it is small when, obtain just base magnesium alloy control
Arm.
(11) linkage motion cutting, qualified first base magnesium alloy control arm is stood plus is used by four axis or 5-shaft linkage numerical control center
Dividing head and side milling head complete all machining operations in clamped one time, obtain smart base magnesium alloy control arm.
(12) clean, smart base magnesium alloy control arm is subjected to cleaning showers, is cleaned except degreasing, then with ultrasonic wave.
(13) differential arc oxidation, smart base magnesium alloy control arm is inserted in the electrolyte that voltage is 420V and carries out differential arc oxidation processing
12min minutes, make differential arc oxidation film layer up to 16 μm.
(14) external coating, electrophoretic coating is carried out or polishing of dusting after carrying out cleaning showers in the outer surface of micro-arc oxidation films again
Processing；Then cured after cleaning again, solidification temperature is 200 DEG C, and hardening time 22min, obtains magnesium alloy control arm.
The control arm that above-described embodiment 1,2,3 is produced carries out bending stiffness, tensile strength and yield strength test.
Test method is that the bending stiffness of three-point bending method test control arm, pressure head are used on universal testing machine
Loading speed is 0.08mm/s, and supporting point radius is 56.46mm, and test temperature is room temperature, and the degree of disturbing of test specimen load(ing) point reaches
Stop loading during 0.25mm；Each bending stiffness of the embodiment product using the average value of 3 exemplar test values as sample.Ten thousand
The tension test of control arm sample is carried out in energy Material Testing Machine, test temperature is room temperature, and sample is carried out with electron microscope
Stretching fracture morphology observation；The tensile strength of sample and fatigue strength are used as using the average value of 3 exemplar test values.
Test result such as table 1：The rigidity and strength test table of control arm.
| Bending strength N/mm | Tensile strength MPa | Fatigue strength MPa | |
| 1 product of embodiment | 44572 | 576.33 | 317.55 |
| 2 product of embodiment | 45326 | 580.12 | 320.32 |
| 3 product of embodiment | 46023 | 582.15 | 321.01 |
As it can be seen that it is all very high using the rigidity and intensity of the magnesium alloy control arm of the method for the present invention production, more than common steel control
The strength and stiffness of arm processed.
Claims (8)
1. a kind of production method of automobile control arm, including preparation mould, preparation material, semisolid pressure casting, linkage be refined and table
Surface treatment workshop section, it is characterised in that the semisolid pressure casting workshop section includes material feeding, the casting of extruding note, extrusion casint and mould unloading step；
Wherein：
The injection step is the batch plant started on vacuum melting furnace, is injected into semi-solid magnesium alloy by expects pipe
In pressure injection barrel；
The extruding note casting step is to start the pressure injection oil cylinder in three orientation in die casting machine, promotes the pressure injection in three injecting units
Punch is promoted to mould cavity at the same time from three directions, in semi-solid magnesium alloy pressure injection to mould cavity and will be molded；During pressure injection
Pressure injection is completed using three sections of pressure injection speed according to pressure injection stroke, wherein first segment stroke is the 1/2 of full section stroke, by punch pressure injection
Speed control is in the range of 100-150 mm/seconds；Second segment stroke is the 1/3 of full section stroke, and punch pressure injection speed control is existed
In the range of 200-250 mm/seconds；3rd section of stroke is the 1/6 of full section stroke, by punch pressure injection speed control in 300-350 millis
In the range of meter per second；Then punch pressurizes, and by the control of pressure injection power in the range of 2500-2850KN, and keep constant voltage time 9-11
Second；
The extrusion casint step is to start the secondary compressing cylinder of die casting machine, pulls composite molding core rod casting mold, while die casting owner
Compressing cylinder promotes moving-mould-core downlink, moving-mould-core combination composite molding core rod is further molded with cover half core, die casting ratio pressure 1000-
1050Bar, die casting Stroke Control is at 0.5-1.5 millimeters, and then main compressing cylinder carries out pressurize, dwell time 20-30 second；
The mould unloading step is forging will to cool to 380-400 DEG C, then start main compressing cylinder and pressure injection oil cylinder successively,
Diecasting punching head and pressure injection punch are exited, restarts die cylinder and lifts movable mold backboard, by moving-mould-core and composite molding core rod
Separate, restart secondary compressing cylinder and separate composite molding core rod and cover half core, then start ejection cylinder, promote mandril to cast and forge
Molding forging ejection, then takes out forging by robot, obtains blank automobile control arm.
2. the production method of automobile control arm according to claim 1, it is characterised in that the prepared mould workshop section includes
Semi-solid state extrusion mould and die-filling step are made, wherein：
The semi-solid state extrusion mould is made of moving-mould-core and cover half core and composite molding core rod, makes moving-mould-core, cover half first
Core and composite molding core rod, and cause the mould cavity formed after the moving-mould-core, cover half core and the molding of composite molding core rod
Shape is identical with the global shape of automobile control arm；Cover half core is equipped with three main cast gates, respectively positioned at three companies of control arm
Connect end position；The semi-solid state extrusion mould uses hot-work die steel making；
It is described it is die-filling be by moving-mould-core be installed on die casting machine dynamic model frame on, by cover half core be installed on die casting machine model frame on；
By composite molding core rod be installed on it is compound it is framed in, it is compound it is framed installed in the top of model frame and with the piston rod of secondary compressing cylinder
Connection；Start the die cylinder of die casting machine, promote moved cross beam, drive moving-mould-core downward stroke, with composite molding core rod and calmly
Core rod is molded, and forms mould cavity.
3. the production method of automobile control arm according to claim 2, it is characterised in that the prepared material workshop section includes
Raw material preheat and melt step, wherein：
Raw material preheating is that raw material magnesium alloy particle preheated 20-30min at 140-160 DEG C at a temperature of first, then
20-30min is preheated at a temperature of 400-450 DEG C, and is kept the temperature；
The melt is that the magnesium alloy particles after preheating are placed in in vacuum melting furnace and closed, the general at a temperature of 575-585 DEG C
Magnesium alloy particles are fused into semisolid molten and keep the temperature, and obtain semi-solid magnesium alloy.
4. the production method of automobile control arm according to claim 3, it is characterised in that the linkage refinement includes
Detection, heat treatment and linkage motion cutting step, wherein：
The detecting step is that blank magnesium alloy control arm is detected, and defective work carried out reworked processing, certified products into
Row is processed further；Specifically blank magnesium alloy control arm is detected, the blank magnesium alloy for having micropore or gap is controlled
Arm carries out reworked processing；
Heat treatment, by blank magnesium alloy control arm certified products cool down, trimming, is then placed in tunnel type heat-treatment furnace, first into
Row vacuumize process, then fills tunnel type heat-treatment furnace with inert gas, air inlet is closed after air pressure in stove reaches normal pressure,
By heat temperature raising in furnace body；When furnace body temperature reaches 455-465 DEG C, start to keep the temperature casting, soaking time 2.5-
3.5 it is small when；Then heat-treatment furnace is opened, blank magnesium alloy control arm is put into 75-85 DEG C of water and carries out quenching treatment, 2.5-
3.5 it is small when after carry out ageing treatment, aging temperature is 175-185 DEG C, aging time for 2.5-3.5 it is small when, obtain
First base magnesium alloy control arm；
The linkage motion cutting step is to stand qualified first base magnesium alloy control arm by four axis or 5-shaft linkage numerical control center to add
All machining operations are completed in clamped one time using dividing head and side milling head, obtain smart base magnesium alloy control arm.
5. the production method of automobile control arm according to claim 4, it is characterised in that the surface treatment workshop section includes
Cleaning, differential arc oxidation and external coating step, wherein：
The cleaning step is that smart base magnesium alloy control arm is carried out cleaning showers, is cleaned except degreasing, then with ultrasonic wave；
The differential arc oxidation step is to insert smart base magnesium alloy control arm in the electrolyte that voltage is 380V-420V to carry out the differential of the arc
Oxidation processes 8-12min minutes, make differential arc oxidation film layer reach 13-16 μm；
The external coating step is to carry out electrophoretic coating again after carrying out cleaning showers in the outer surface of micro-arc oxidation films or dust
Polishing treatment；Then cured after cleaning again, solidification temperature is 180-200 DEG C, hardening time 18-22min, obtains magnesium conjunction
Golden control arm.
6. the production method of automobile control arm according to claim 1, it is characterised in that adopted in the extruding note casting step
Pressure injection power is 2633KN, and keeps constant voltage time 10 seconds.
7. the production method of automobile control arm according to claim 1, it is characterised in that adopted in the extrusion casint step
Die casting ratio pressure is 1037Bar.
8. a kind of die casting machine for producing blank magnesium alloy control arm, the die casting machine is equipped with dynamic model, cover half and pressure injection mechanism；Institute
The dynamic model frame that dynamic model includes being fixed on the moved cross beam of die casting machine and the diecasting punching head for being arranged on dynamic model outer frame centre of surface are stated,
The piston rod of the top of diecasting punching head and the main compressing cylinder of die casting machine connects；The cover half includes the workbench for being arranged on die casting machine
On model frame, it is characterised in that be additionally provided with compound die between the dynamic model and cover half, the compound die include it is compound framed and
The piston rod of connected die casting machine pair compressing cylinder, it is compound it is framed in be provided with compound core rod；Set in the dynamic model frame
There is moving-mould-core；Cover half core is equipped with the model frame, the cover half core is equipped with three main cast gates, respectively positioned at the three of control arm
A connection end position；Form mould cavity after the moving-mould-core and compound core rod and the molding of cover half core, the mould cavity shape with
The form fit of control arm；The model frame and cover half in-core are provided with mobilizable mandril, the top of the mandril and die casting machine
Go out the piston rod connection of oil cylinder；The top of the diecasting punching head is equipped with 0.5-1.5 millimeters of die casting stroke；Pressure injection mechanism bag
Three sets of injecting units are included, three sets of injecting units are separately positioned on the side of three main cast gates of cover half core, and injecting unit includes pressure
Filling barrel and the pressure injection punch being arranged in pressure injection barrel, one end of the pressure injection barrel are connected with the main cast gate of cover half core,
The piston rod of one end of the pressure injection punch and the pressure injection oil cylinder of die casting machine connects.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672684A (en) * | 2018-05-16 | 2018-10-19 | 昆山钜全金属工业有限公司 | Compresser cylinder semisolid vacuum pressing and casting system |
| CN109622914A (en) * | 2018-11-30 | 2019-04-16 | 江苏文灿压铸有限公司 | A kind of die-casting process of automobile speed variator |
| CN115194120A (en) * | 2022-07-30 | 2022-10-18 | 浙江新峰机械有限公司 | Automobile steering knuckle die-casting die and low-pressure semi-solid casting process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875518A (en) * | 1987-08-21 | 1989-10-24 | Honda Giken Kogyo Kabushiki Kaisha | Method of and apparatus for low-pressure casting of light metal alloy |
| CN201524786U (en) * | 2009-09-29 | 2010-07-14 | 宁波东浩铸业有限公司 | Mould for pressure casting |
| CN101934336A (en) * | 2010-09-14 | 2011-01-05 | 华中科技大学 | Method and device for semi-solid precision rheo-casting of light alloys |
| CN102554628A (en) * | 2012-01-20 | 2012-07-11 | 广州有色金属研究院 | Casting-forging hydropress and method for casting and forging product thereof |
| CN103464714A (en) * | 2013-08-30 | 2013-12-25 | 广州有色金属研究院 | Method and device for liquid casting and forging forming of automotive brake calipers |
| CN106244870A (en) * | 2016-08-31 | 2016-12-21 | 宁波环亚机械制造有限公司 | A kind of production technology of automobile diecast parts |
| CN206153526U (en) * | 2016-08-19 | 2017-05-10 | 浙江大学 | Half supplementary solid -state injection molding device of complicated thin wall class aluminum alloy part supersound |
-
2017
- 2017-12-28 CN CN201711451798.1A patent/CN107900305B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4875518A (en) * | 1987-08-21 | 1989-10-24 | Honda Giken Kogyo Kabushiki Kaisha | Method of and apparatus for low-pressure casting of light metal alloy |
| CN201524786U (en) * | 2009-09-29 | 2010-07-14 | 宁波东浩铸业有限公司 | Mould for pressure casting |
| CN101934336A (en) * | 2010-09-14 | 2011-01-05 | 华中科技大学 | Method and device for semi-solid precision rheo-casting of light alloys |
| CN102554628A (en) * | 2012-01-20 | 2012-07-11 | 广州有色金属研究院 | Casting-forging hydropress and method for casting and forging product thereof |
| CN103464714A (en) * | 2013-08-30 | 2013-12-25 | 广州有色金属研究院 | Method and device for liquid casting and forging forming of automotive brake calipers |
| CN206153526U (en) * | 2016-08-19 | 2017-05-10 | 浙江大学 | Half supplementary solid -state injection molding device of complicated thin wall class aluminum alloy part supersound |
| CN106244870A (en) * | 2016-08-31 | 2016-12-21 | 宁波环亚机械制造有限公司 | A kind of production technology of automobile diecast parts |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672684A (en) * | 2018-05-16 | 2018-10-19 | 昆山钜全金属工业有限公司 | Compresser cylinder semisolid vacuum pressing and casting system |
| CN109622914A (en) * | 2018-11-30 | 2019-04-16 | 江苏文灿压铸有限公司 | A kind of die-casting process of automobile speed variator |
| CN115194120A (en) * | 2022-07-30 | 2022-10-18 | 浙江新峰机械有限公司 | Automobile steering knuckle die-casting die and low-pressure semi-solid casting process |
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