CN115163704A - Aluminum magnesium alloy die casting for automobile parts and die casting method thereof - Google Patents
Aluminum magnesium alloy die casting for automobile parts and die casting method thereof Download PDFInfo
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- CN115163704A CN115163704A CN202210799276.5A CN202210799276A CN115163704A CN 115163704 A CN115163704 A CN 115163704A CN 202210799276 A CN202210799276 A CN 202210799276A CN 115163704 A CN115163704 A CN 115163704A
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 95
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000004512 die casting Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000000919 ceramic Substances 0.000 claims abstract description 96
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 238000003754 machining Methods 0.000 claims abstract description 9
- 238000000748 compression moulding Methods 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000001513 hot isostatic pressing Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims description 3
- 229910001060 Gray iron Inorganic materials 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/125—Discs; Drums for disc brakes characterised by the material used for the disc body
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/127—Discs; Drums for disc brakes characterised by properties of the disc surface; Discs lined with friction material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Braking Arrangements (AREA)
Abstract
The application relates to an aluminum magnesium alloy die casting for automobile parts and a die casting method thereof, belonging to the field of automobile die casting, wherein the aluminum magnesium alloy die casting for the automobile parts comprises an aluminum magnesium alloy inner core which is arranged in a round cake shape, and the middle part of the aluminum magnesium alloy inner core is provided with a mounting hole; the ceramic layer is covered on the outer surface of the aluminum-magnesium alloy inner core; and the spokes are arranged in the aluminum magnesium alloy. The die casting method of the aluminum magnesium alloy die casting comprises the steps of compression molding, green compact assembly, powder sintering, steam treatment, alloy die casting, machining and QC quality inspection. The application improves the condition that the brake disc wear resistance of the gray cast iron is poor.
Description
Technical Field
The application relates to the field of automobile die castings, in particular to an aluminum magnesium alloy die casting for automobile parts and a die casting method thereof.
Background
The brake disc and the brake calipers are important parts of a front wheel brake system of an automobile, the brake disc is connected with a wheel hub of a wheel, the brake calipers are connected with an axle system, and when the automobile is braked, the brake calipers tightly hold the brake disc to realize deceleration of the wheel through friction force. In order to reduce the cost, a part of brake discs on the market are processed and manufactured by gray cast iron.
Aiming at the related technologies, the brake disc made of gray cast iron has poor wear resistance, and during long-time braking, under the action of frictional heat, the wear resistance of the red gray cast iron brake disc is further reduced, the service life of the brake disc is quickly reduced, meanwhile, the friction force is reduced, and the braking force is reduced.
Disclosure of Invention
In order to improve the condition that the brake disc of gray cast iron is poor in wear resistance, the application provides an aluminum magnesium alloy die casting for automobile parts and a die casting method thereof.
In a first aspect, the application provides an aluminum magnesium alloy die casting for auto-parts, which adopts the following technical scheme:
an aluminum magnesium alloy die casting for automobile parts, comprising:
the aluminum-magnesium alloy inner core is arranged in a round cake shape, and the middle part of the aluminum-magnesium alloy inner core is provided with a mounting hole;
the ceramic layer is covered on the outer surface of the aluminum-magnesium alloy inner core;
and the spokes are arranged in the aluminum magnesium alloy.
By adopting the scheme, the aluminum magnesium alloy die casting is used as a brake disc, when a brake is carried out, the brake calipers rub the surface of the ceramic layer, the ceramic layer improves the wear resistance and the high temperature resistance of the aluminum magnesium alloy die casting, the probability of heat attenuation caused by friction heat in the brake process is reduced, the aluminum magnesium alloy inner core reduces the whole weight of the die casting, and the oil consumption of vehicle running is reduced. The spokes strengthen the structural strength of the aluminum magnesium alloy inner core, improve the structural stability of the aluminum magnesium alloy inner core in a high-temperature state, and reduce the probability of the aluminum magnesium alloy inner core being cracked in the braking process.
Preferably, the ceramic layer is provided with a plurality of bumps corresponding to one side of the aluminum magnesium alloy inner core, and the bumps are embedded in the aluminum magnesium alloy inner core.
By adopting the scheme, the connecting strength of the ceramic layer and the aluminum magnesium alloy inner core is enhanced by the bump, and the probability that the ceramic layer is separated from the aluminum magnesium alloy inner core due to the friction force or heating of the brake caliper is reduced.
Preferably, the ceramic layer and the aluminum-magnesium alloy inner core are jointly provided with a plurality of ventilation holes, and the ventilation holes penetrate through the ceramic layer and the aluminum-magnesium alloy inner core.
Through adopting above-mentioned scheme, the area of contact of almag die casting and air current is increased in the ventilation hole, and the cooling effect of reinforcing air current to almag die casting reduces the condition emergence of almag die casting high temperature.
Preferably, the outer surface of the ceramic layer is provided with a plurality of scribing grooves.
Through adopting above-mentioned scheme, the piece that drops when brake caliper and almag die casting friction is discharged through the groove of ruling fast, increases ceramic layer frictional force, also further reinforcing ceramic layer surface's heat radiating area.
Preferably, the aluminum-magnesium alloy inner core is manufactured by a die-casting process, the melting point of the selected aluminum-magnesium alloy is higher than 500 ℃, the ceramic layer is made of wear-resistant ceramic, and the ceramic layer and the spokes are manufactured by powder sintering.
By adopting the scheme, the die-casting process improves the production quality of the aluminum magnesium alloy inner core, enhances the strength of the aluminum magnesium alloy inner core and improves the casting efficiency of the aluminum magnesium alloy inner core. The ceramic layer is made of wear-resistant ceramic, so that the wear resistance of the ceramic layer is enhanced, and the aging of the ceramic layer is delayed. The powder sintering process can easily realize the compounding of various types, simplify the forming process and improve the product precision.
In a second aspect, the following technical scheme is adopted in the aluminum magnesium alloy die casting method provided by the application:
the die casting method of the aluminum magnesium alloy die casting comprises the following steps:
s1, compression molding: pressing the alloy powder and the ceramic powder into a spoke pressed blank and a ceramic pressed blank respectively by using a press machine and a corresponding die;
s2, assembling a pressed blank: assembling and combining the spoke pressed compact and the ceramic pressed compact;
s3, powder sintering: feeding the spoke pressed compact and the ceramic pressed compact into a hot isostatic pressing machine for sintering, wherein the sintering process adopts a hot isostatic pressing method, and the spoke and the hollow ceramic layer are prepared in the step;
s4, steam treatment: placing the spokes and the ceramic layer which are prepared by sintering in a hot steam environment until the outer surfaces and pores of the spokes and the ceramic layer form a layer of fine oxide film;
s5, alloy die casting: placing the spoke and ceramic layer assembly subjected to steam treatment into a brake disc die for insert casting, and die-casting the aluminum magnesium alloy into an aluminum magnesium alloy inner core by adopting a die-casting process, wherein the aluminum magnesium alloy inner core, the spoke and the ceramic layer are embedded and cast into an integrated blank;
s6, machining: cutting, drilling and polishing the blank to obtain a die casting;
s7, QC quality inspection: and (4) carrying out quality inspection on the die castings by visual inspection of workers, ultrasonic flaw detection and the like, and putting qualified die castings into inventory.
Preferably, the vent holes, the scribing grooves and the bumps are manufactured in the steps of press forming, powder sintering and alloy die casting.
Through adopting above-mentioned scheme, ventilation hole, marking off groove, lug and ceramic pressed compact and almag inner core integrated into one piece at the in-process of compression moulding and alloy die-casting have reduced the work load of later stage machining, have improved production efficiency, have reduced the raw materials loss.
Preferably, the ceramic green compact includes an upper green compact and a lower green compact, which can be engaged with each other.
Through adopting above-mentioned scheme, the ceramic pressed compact is formed by last pressed compact and lower pressed compact lock, has reduced the fashioned degree of difficulty of ceramic pressed compact, has simplified the compression moulding's mould, has reduced enterprise equipment cost.
Preferably, the spoke compact can be inserted into the lower compact.
Through adopting above-mentioned scheme, the spoke pressed compact is inserted and is located the base that pushes down and has improved the stability of spoke pressed compact and the base relative position that pushes down, reduces the probability that the spoke pressed compact takes place crooked in the ceramic pressed compact among transport and the powder sintering process, improves the yields of product.
In summary, the present application has the following beneficial effects:
1. the ceramic layer improves the wear resistance and high temperature resistance of the aluminum magnesium alloy die casting, and reduces the probability of heat attenuation caused by friction heat in the braking process;
2. the powder sintering process can easily realize various types of compounding, simplify the forming process and improve the product precision;
3. the vent hole, the scribing groove and the lug are integrally formed with the ceramic pressed compact and the aluminum-magnesium alloy inner core in the process of compression molding and alloy die casting, so that the workload of later-stage machining is reduced, the production efficiency is improved, and the raw material loss is reduced.
Drawings
FIG. 1 is a schematic structural view of an aluminum magnesium alloy die casting for automobile parts according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of an aluminum magnesium alloy die cast part for an automobile part according to an embodiment of the present application;
FIG. 3 is an exploded view of an aluminum magnesium alloy die casting for automobile parts according to an embodiment of the present application;
FIG. 4 is a flow chart of a method of die casting an aluminum magnesium alloy die casting according to an embodiment of the present application;
FIG. 5 is a schematic view showing the structure of a ceramic green compact in the die casting method of an aluminum magnesium alloy die casting according to the embodiment of the present application;
FIG. 6 is a schematic view of the structure of a spoke compact in the method of die casting an Al-Mg alloy die casting according to an embodiment of the present application.
Description of reference numerals: 1. an aluminum magnesium alloy inner core; 2. spokes; 3. a ceramic layer; 31. a bump; 32. marking a groove; 33. a vent hole; 4. compacting a spoke; 41. a tensile flange; 42. abutting against the plate; 43. inserting a block; 5. pressing a ceramic blank; 51. pressing the blank; 52. and (5) pressing the blank.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses aluminum magnesium alloy die casting for auto-parts. Referring to fig. 1 and 2, the aluminum magnesium alloy core comprises a round cake-shaped aluminum magnesium alloy core 1, wherein the melting point of the aluminum magnesium alloy is more than 500 ℃. Be provided with a plurality of spokes 2 in the almag inner core 1, spoke 2 sets up along almag inner core 1's circumferencial direction array, and spoke 2 uses almag's axis to be radial setting as the center. The ceramic layer 3 is fixedly connected to the outer side of the aluminum magnesium alloy inner core 1, the ceramic layer 3 covers the outer surface of the aluminum magnesium alloy inner core 1, and the ceramic layer 3 is made of wear-resistant ceramic with aluminum oxide as a main component. The aluminum-magnesium alloy inner core 1 is manufactured by a die-casting process, and the ceramic layer 3 and the spokes 2 are both manufactured by powder sintering. The aluminum magnesium alloy die casting is used as a brake disc, when a brake is performed, a brake caliper rubs the surface of the ceramic layer 3, the ceramic layer 3 improves the wear resistance and the high temperature resistance of the aluminum magnesium alloy die casting, the probability of heat attenuation caused by friction heat in the braking process is reduced, the whole weight of the die casting is reduced by the aluminum magnesium alloy inner core 1, and the oil consumption of vehicle running is reduced. The spokes 2 strengthen the structural strength of the aluminum magnesium alloy inner core 1, improve the structural stability of the aluminum magnesium alloy inner core 1 at a high temperature state, and reduce the probability that the aluminum magnesium alloy inner core 1 is cracked in the braking process.
Referring to fig. 2 and 3, the ceramic layer 3 is fixedly connected with a plurality of bumps 31 corresponding to one side of the aluminum magnesium alloy inner core 1, the bumps 31 are embedded in the aluminum magnesium alloy inner core 1, the bumps 31 enhance the connection strength between the ceramic layer 3 and the aluminum magnesium alloy inner core 1, and the probability that the ceramic layer 3 is separated from the aluminum magnesium alloy inner core 1 due to the friction force or heat of the brake caliper is reduced. A plurality of line marking grooves 32 have been seted up to ceramic layer 3 surface, and line marking groove 32 uses the axis of almag to be radial setting as the center, and the piece that drops when brake caliper and almag die casting friction is discharged through line marking groove 32 fast, increases ceramic layer 3 frictional force. Ceramic layer 3 and almag inner core 1 have seted up a plurality of ventilation holes 33 jointly, and the ventilation opening runs through ceramic layer 3 and almag inner core 1. The contact area of almag die casting and air current is increased to ventilation hole 33, and the cooling effect of reinforcing air current to almag die casting reduces the almag die casting high temperature's condition and takes place.
The embodiment of the application also discloses an aluminum magnesium alloy die casting method.
Referring to fig. 4-5, the die casting method of the aluminum magnesium alloy die casting comprises the following steps:
s1, compression molding: the alloy powder and the ceramic powder are pressed into a spoke compact 4 and a ceramic compact 5, respectively, using a press and corresponding dies. Ceramic pressed compact 5 is the cake form, is provided with in the ceramic pressed compact 5 and holds the chamber, and ceramic pressed compact middle part is provided with pours logical groove. The ceramic green compact 5 comprises an annular upper green compact 51 and a lower green compact 52, the outer circle edges of the upper green compact 51 and the lower green compact 52 are arranged in a staggered mode, and the upper green compact 51 and the lower green compact 52 can be buckled with each other. The ceramic pressed compact 5 is formed by buckling an upper pressed compact 51 and a lower pressed compact 52, so that the difficulty in forming the ceramic pressed compact 5 is reduced, a die for compression molding is simplified, and the equipment cost of an enterprise is reduced. Further, the vent hole 33, the scribe groove 32, and the bump 31 are provided on the ceramic green compact 5 by a press-molding die. Spoke compact 4 is close to 5 middle part one ends of ceramic compact and is provided with tensile flange 41, and 5 middle part one ends of ceramic compact are kept away from to spoke compact 4 are provided with butt plate 42, and butt plate 42 can be pressed compact 51 and lower compact 52 tightly by last, and butt plate 42 is close to compact 52 one side rigid coupling down and has inserted block 43, and inserted block 43 can insert and locate compact 52 down. The vent hole 33, the scribing groove 32 and the bump 31 are integrally formed with the ceramic pressed compact 5 and the aluminum-magnesium alloy inner core 1 in the process of press forming and alloy die casting, so that the workload of later-stage machining is reduced, the production efficiency is improved, and the raw material loss is reduced. The spoke pressed compact 4 is inserted and is located down pressed compact 52 and has improved the stability of spoke pressed compact 4 with pressed compact 52 relative position down, reduces the probability that the skew takes place for spoke pressed compact 4 in ceramic pressed compact 5 among transport and the powder sintering process, improves the yields of product.
S2, assembling a pressed blank: all spoke pressed compacts 4 are radially placed on the lower pressed compact 52 in an array manner along the circumferential direction, the insert blocks 43 are inserted into the lower pressed compact 52, the upper pressed compact 51 is buckled with the lower pressed compact 52, and the abutting plates 42 are clamped simultaneously during buckling.
S3, powder sintering: and (3) feeding the assembled spoke pressed compact 4 and the ceramic pressed compact 5 into a hot isostatic pressing machine for sintering, wherein the hot isostatic pressing method is adopted in the sintering process, and the step is used for preparing the spoke 2 and the hollow ceramic layer 3.
S4, steam treatment: and placing the spokes 2 and the ceramic layer 3 which are prepared by sintering in a hot steam environment until the surfaces and pores of the spokes 2 and the ceramic layer 3 form a fine oxide film.
S5, alloy die casting: and placing the spoke 2 and the ceramic layer 3 assembly subjected to steam treatment into a brake disc die for insert casting, and die-casting the aluminum magnesium alloy into the aluminum magnesium alloy inner core 1 by adopting a die-casting process, wherein the aluminum magnesium alloy inner core 1, the spoke 2 and the ceramic layer 3 are embedded and cast into an integrated blank.
S6, machining: and cutting, drilling and polishing the blank to obtain the die casting.
S7, QC quality inspection: and (4) carrying out quality inspection on the die castings by visual inspection of workers, ultrasonic flaw detection and the like, and putting qualified die castings into inventory.
The implementation principle of the embodiment of the application is as follows: a worker utilizes a press machine and a corresponding die to press alloy powder and ceramic powder into a spoke pressed compact 4 and a ceramic pressed compact 5 respectively, the vent hole 33, the scribing groove 32 and the bump 31 are integrally formed with the ceramic pressed compact 5 and the aluminum-magnesium alloy inner core 1 in the pressing forming and alloy die-casting processes, and the workload of post-machining is reduced. The press forming is faster than the machining forming production speed, the utilization rate of raw materials is high, and the mass production of enterprises is facilitated. The spoke pressed compact 4 and the ceramic pressed compact 5 are assembled and then sintered together, so that the utilization rate of energy is improved, the production steps are simplified, meanwhile, the structural strength of the product is enhanced by a hot isostatic pressing method, and the die-casting time is shortened.
The spoke 2 and the ceramic layer 3 after the hot steam treatment have enhanced corrosion resistance and wear resistance, and further strengthen the strength of the product. The aluminum magnesium alloy inner core 1, the spokes 2 and the ceramic layer 3 are embedded and cast into a whole, so that the mutual connection strength of the aluminum magnesium alloy inner core 1, the spokes 2 and the ceramic layer 3 is improved, the assembly process among the three is also simplified, and the production efficiency and the service performance of the product are improved.
The embodiment of the application improves the poor condition of brake disc wearability of grey cast iron.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides an aluminum magnesium alloy die casting for auto-parts which characterized in that includes:
the aluminum-magnesium alloy inner core (1) is arranged in a round cake shape, and the middle part of the aluminum-magnesium alloy inner core is provided with a mounting hole;
the ceramic layer (3) covers the outer surface of the aluminum-magnesium alloy inner core (1);
and the spokes (2) are arranged in the aluminum magnesium alloy.
2. An aluminum magnesium alloy die casting for automobile parts according to claim 1, wherein: the ceramic layer (3) is provided with a plurality of bumps (31) corresponding to one side of the aluminum-magnesium alloy inner core (1), and the bumps (31) are embedded in the aluminum-magnesium alloy inner core (1).
3. An aluminum magnesium alloy die casting for automobile parts according to claim 1, wherein: a plurality of ventilation holes (33) are formed in the ceramic layer (3) and the aluminum-magnesium alloy inner core (1) together, and the ventilation holes penetrate through the ceramic layer (3) and the aluminum-magnesium alloy inner core (1).
4. An aluminum magnesium alloy die casting for automobile parts according to claim 1, wherein: the outer surface of the ceramic layer (3) is provided with a plurality of scribing grooves (32).
5. An aluminum magnesium alloy die casting for automobile parts according to claim 1, wherein: the aluminum-magnesium alloy inner core (1) is manufactured by a die-casting process, the melting point of the selected aluminum-magnesium alloy is higher than 500 ℃, the ceramic layer (3) is made of wear-resistant ceramic, and the ceramic layer (3) and the spokes (2) are both manufactured by powder sintering.
6. The die casting method of the aluminum magnesium alloy die casting is characterized by comprising the following steps of:
s1, compression molding: pressing alloy powder and ceramic powder into a spoke pressed compact (4) and a ceramic pressed compact (5) respectively by using a press machine and a corresponding die;
s2, assembling a pressed blank: assembling and combining the spoke pressed compact (4) and the ceramic pressed compact (5);
s3, powder sintering: feeding the spoke pressed compact (4) and the ceramic pressed compact (5) into a hot isostatic pressing machine for sintering, wherein the sintering process adopts a hot isostatic pressing method, and the step is to prepare the spoke (2) and the hollow ceramic layer (3);
s4, steam treatment: placing the spokes (2) and the ceramic layer (3) which are prepared by sintering in a hot steam environment until the surfaces and pores of the spokes (2) and the ceramic layer (3) form a fine oxide film;
s5, alloy die casting: placing the spoke (2) and ceramic layer (3) assembly subjected to steam treatment into a brake disc die for insert casting, and die-casting aluminum magnesium alloy into an aluminum magnesium alloy inner core (1) by adopting a die-casting process, wherein the aluminum magnesium alloy inner core (1), the spoke (2) and the ceramic layer (3) are embedded and cast into an integrated blank;
s6, machining: cutting, drilling and polishing the blank to obtain a die casting;
s7, QC quality inspection: and (4) carrying out quality inspection on the die castings by visual inspection of workers, ultrasonic flaw detection and the like, and putting qualified die castings into inventory.
7. The method of die casting an aluminum magnesium alloy die casting of claim 6, wherein: and manufacturing the vent hole (33), the scribing groove (32) and the bump (31) in the steps of press forming, powder sintering and alloy die casting.
8. The method of die casting an aluminum magnesium alloy die casting of claim 6, wherein: the ceramic green compact (5) comprises an upper green compact (51) and a lower green compact (52), and the upper green compact (51) and the lower green compact (52) can be mutually buckled.
9. The method of die casting an aluminum magnesium alloy die casting of claim 8, wherein: the spoke compact (4) can be inserted into the lower compact (52).
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| CN202210799276.5A CN115163704B (en) | 2022-07-08 | 2022-07-08 | Aluminum magnesium alloy die casting for automobile parts and die casting method thereof |
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| CN202210799276.5A CN115163704B (en) | 2022-07-08 | 2022-07-08 | Aluminum magnesium alloy die casting for automobile parts and die casting method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202085A (en) * | 2017-07-24 | 2017-09-26 | 黄志豪 | A kind of automobile wear-resistant brake disc and preparation method thereof |
| CN109210109A (en) * | 2017-06-30 | 2019-01-15 | 秦文隆 | Power car brake disc and preparation method thereof |
| CN111503185A (en) * | 2020-05-18 | 2020-08-07 | 保定立中东安轻合金部件制造有限公司 | Aluminum-iron composite brake disc and manufacturing method thereof |
| US20210094094A1 (en) * | 2017-06-06 | 2021-04-01 | Grouper Casting, Llc | Composite part and method and tooling for making the same |
| CN214945930U (en) * | 2021-04-25 | 2021-11-30 | 浙江耐磨达科技有限公司 | Automobile brake disc capable of dissipating heat quickly |
-
2022
- 2022-07-08 CN CN202210799276.5A patent/CN115163704B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210094094A1 (en) * | 2017-06-06 | 2021-04-01 | Grouper Casting, Llc | Composite part and method and tooling for making the same |
| CN109210109A (en) * | 2017-06-30 | 2019-01-15 | 秦文隆 | Power car brake disc and preparation method thereof |
| CN107202085A (en) * | 2017-07-24 | 2017-09-26 | 黄志豪 | A kind of automobile wear-resistant brake disc and preparation method thereof |
| CN111503185A (en) * | 2020-05-18 | 2020-08-07 | 保定立中东安轻合金部件制造有限公司 | Aluminum-iron composite brake disc and manufacturing method thereof |
| CN214945930U (en) * | 2021-04-25 | 2021-11-30 | 浙江耐磨达科技有限公司 | Automobile brake disc capable of dissipating heat quickly |
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| CN115163704B (en) | 2023-12-22 |
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