CN106216952B - A kind of wheel hub forging method - Google Patents

A kind of wheel hub forging method Download PDF

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Publication number
CN106216952B
CN106216952B CN201610645304.2A CN201610645304A CN106216952B CN 106216952 B CN106216952 B CN 106216952B CN 201610645304 A CN201610645304 A CN 201610645304A CN 106216952 B CN106216952 B CN 106216952B
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forging
wheel hub
blank
aluminum alloy
alloy plate
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CN106216952A (en
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董祥义
张涛
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Ningbo Lu Wei Automobile Wheel Co Ltd
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Ningbo Lu Wei Automobile Wheel Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50Other automobile vehicle parts, i.e. manufactured in assembly lines

Abstract

The invention discloses a kind of wheel hub forging methods, comprise the following steps:A. profile extrusion passes through the aluminum alloy plate materials for the thickness and width that extruder extrusion is set;B. preheat, the aluminum alloy plate materials squeezed out by the continuous on-line heating of heating equipment from extruder;C. earnestly, the aluminum alloy plate materials being preheated are come out from heating equipment using the cutting of fervent technique and cuts into the length preset and form square blank;D. forge, will earnestly after blank be put into mold and forge and press, form it into dish type;E. dish type blank is punched out bulging;F. the blank of punching bulging is put into spinning machine and carries out rotary press modelling;G. the blank of rotary press modelling is heat-treated and is machined, obtain wheel hub finished product;So that the more efficient of forged hub, raw material availability higher and product consistency higher.

Description

A kind of wheel hub forging method
Technical field
The present invention relates to forging field, more specifically, it relates to a kind of forging method of reflectal wheel hub.
Background technology
World Auto Industry just develops towards light weight, high speed, safe, energy saving, comfortably light with environmental pollution direction, therefore The dosage of aluminum alloy spare part in the car is increasing.Wheel hub as one of important component in running car system and A kind of more demanding security personnel's part, the weight of its not only bearing automobile, while also embody the appearance and modeling of automobile.Past 10 years, the annual average rate of increase of global aluminium alloy automobile hub yield was up to 7.6%.It can be seen that the need with automotive light weight technology It asks and is growing, aluminium alloy wheel hub is just progressively substituting traditional steel wheel hub in Hyundai Motor manufacture and answered by widely promoting With.
Conventional reflectal wheel hub is fabricated using columned as-cast aluminum alloy as raw material.Since as cast condition aluminium closes Gold usually there will be tissue coarse grains and the casting flaws such as stomata, shrinkage cavity, loose, micro-crack, thus before excellent suitability for press forming, Jumping-up process would generally be carried out, as-cast structure is made to be changed into fibrous Deformation structure, eliminates microdefect existing for metal inside, Improve the moulding and compactness of metal, suitable blank is provided for subsequent forging and molding.But its complex procedures, energy consumption are big, forging Part is of high cost.
In view of the above-mentioned problems, Application No. 201510739083.0 is entitled《The manufacturing method of reflectal wheel hub》's Hot rolling aluminium alloy is used in Chinese patent and the plate aluminium alloy of bulk is cut into the side of blank size in a manner of sawing Blank is put into heating furnace to be preheating to after forging temperature afterwards and forge by piece or disc-shaped, so as to instead of before Although jumping-up process with being significantly improved to conventional processes, still remains problems with:
(1)Using sawing mode, many aluminium scrap bits can be generated, raw material cause certain waste;
(2)Using aluminium sheet is integrally carried out it is crisscross by the way of sawing, long processing time;
(3)Cut into the square of designed size and then transported, preheated, technique step play it is more, when adding technique It is long.
The content of the invention
The wheel hub forging efficient, raw material availability is high and product consistency is high is forged the object of the present invention is to provide a kind of Method.
To achieve the above object, realized by following technological means:A kind of wheel hub forging method, comprises the following steps:
A. profile extrusion passes through the aluminum alloy plate materials for the thickness and width that extruder extrusion is set;
B. preheat, the aluminum alloy plate materials squeezed out by the continuous on-line heating of heating equipment from extruder;
C. earnestly, the aluminum alloy plate materials being preheated are come out from heating equipment using the cutting of fervent technique and cut into default Good length forms square blank;
D. forge, will earnestly after blank be put into mold and forge and press, form it into dish type;
E. dish type blank is punched out bulging;
F. the blank of punching bulging is put into spinning machine and carries out rotary press modelling;
G. the blank of rotary press modelling is heat-treated and is machined, obtain wheel hub finished product.
Through the above technical solutions, the side of aluminium alloy plate is squeezed out using extruder in melting process
Formula, compared to the mode of hot-roll forming, because plate rolling is emanant formed product mode, and extrusion forming is The molding mode of collective-type, so the aluminium alloy plate squeezed out has better consistency and grain structure than rolling aluminium sheet, from And make subsequent forged aluminium wheel products, in tensile strength, yield strength, elongation percentage etc., have better product quality and Performance boost;Direct-fired method is expected using the aluminium alloy plate length squeezed out, aluminium alloy plate length material laterally into stove Method is heated, and reduces the heating space of burner hearth, and be directly in the preheating carried out to the aluminium alloy plate that squeezes out, The preheating temperature of burner hearth and the temperature difference of aluminium alloy plate to be preheated are small, so as to need to reach preheating temperature offer to aluminium alloy plate Heat is smaller, realizes the effect for saving energy consumption, and realizes continuous production effect, improves processing efficiency;Aluminium alloy forges material Online fervent method in plug for outlet the aluminium alloy heated, is cut off by required specification, using gravity, directly passed through Runner slides into forging mold, is forged, and realizes stock continuous online production synchronous with preheating step, is promoting work effect While rate, economization equipment volume, and the mode that will originally need vertical-horizontal saw cutting, changing into only needs knife longitudinal direction fervent just It can realize the preparation of blank, not only economization process but also avoid the waste of the aluminium scrap generated by sawing, improve former material The utilization rate of material, energy-saving and emission-reduction;The spinning machine uses horizontal spinning machine or vertical spinning machine, and spinning machine is this field Conventional spinning machine;The machining includes the processing such as trimming, polishing, polishing and application.
Further it is optimized for:Extruding raw material in the step a derive from aluminium bar founding.
Further it is optimized for:The step d point is just forging step and finish-forging step, the just section step will earnestly after Blank is put into just forging mould and forges just base, the finish-forging step and first base is put into finish-forging die and forges whole base.
Through the above technical solutions, forging and stamping blank is divided into just forging and two steps of finish-forging, the substep forging to blank is realized It makes, blank when convenience is to forging is controlled and case study.
Further it is optimized for:The preheating temperature of the step b is 430-470 DEG C.
Further it is optimized for:The fervent technique of the step c includes hydraulic cutter, support agency, and the support agency is used The aluminum alloy plate materials spread out of from heating equipment to be withstood, hydraulic cutter is arranged on the exit site of heating equipment by preheated aluminium Sheet alloy is cut off.
Through the above technical solutions, using hydraulic cutter, and the mode motion stabilization driving force of hydraulic-driven is big, is cutting off Shake small during aluminium alloy plate, notch lines is smooth;And the mode for being withstood aluminium alloy plate with support agency, with closing During hydraulic cutter, the aluminium alloy plate for stretching out burner hearth is unlikely to deform when cutting, and the Forming Quality of blank improves, and only needs to control The distance for making hydraulic cutter and support agency just can determine that by the specifications and models of blank after earnestly, easy to control.
Further it is optimized for:First forging mould and finish-forging die are first heated to 420-460 DEG C before first forging and finish-forging.
Further it is optimized for:The heat treatment of the step g is heat-treated for T6;T6 heat treatments refer to that solution heat treatment is laggard The state of row artificial aging.
Further it is optimized for:The aluminium bar is selected from 6XXX systems or 7XXX line aluminium alloys;The 6XXX line aluminium alloys Selected from 6061 or 6082 aluminium alloys;The 7XXX line aluminium alloys be selected from 7A04,7B04,7075,7475,7050 or 7055 aluminium alloys, 6XXX systems or 7XXX line aluminium alloys are heat-treatable strengthened aluminum alloy, and after heat treatment its intensity can be big Width improves.
Further it is optimized for:In the step d, the forging temperature of 6XXX line aluminium alloys is 510~560 DEG C;7XXX The forging temperature of line aluminium alloy is 420~470 DEG C.
Further it is optimized for:The extrusion pressure of extruder in the step a is 700-900T.
The present invention compared with prior art the advantages of be:
(1)Compared to the mode of rolling and forming plate, aluminium alloy plate extruding is the molding mode of collective-type, so aluminium alloy Plate has better consistency and grain structure than rolling aluminium sheet, so that subsequent forged aluminium wheel products, in tensile strength, bend Intensity, elongation percentage etc. are taken, there are better product quality and performances to be promoted;
(2)The long billot of design width is directly squeezed into, it is big with regard to design can be obtained so as to only need to carry out the long billot of rip cutting Small square blank, saves crosscutting processing step, and economization processing duration improves efficiency;
(3)It using fervent technique, is cut compared to hard iron, the generation of aluminium skimmings will not be caused substantially, improve the utilization rate of raw material;
(4)Blank is directly carried out during being preheated to long billot, realizes that stock is synchronous with pre-heating technique and carries out, significantly Degree improves processing efficiency.
Description of the drawings
Fig. 1 is the wheel hub forging method sequence logic block diagram of the present embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings and pass through specific embodiment to invention be described in further detail, following embodiment is descriptive , it is not limited protection scope of the present invention.
Embodiment 1, a kind of wheel hub forging method, referring to attached drawing 1, be broadly divided into stock, forging and stamping, spinning, heat treatment and These big steps are machined, it is on the basis of one 17 inches of aluminium alloy wheel hub, thickness is aluminium alloy extruded for the 7A04 of 65mm Plate is earnestly into the box-shaped blank that size is 350mm × 350mm × 65mm;
The stock stage therein is in the present embodiment continous way production technology, and a. will use extruder after aluminium bar founding Squeeze out the aluminum alloy plate materials of 350mm × 65mm;B. the aluminum alloy plate materials of extrusion are transmitted online and is heated up to 440 into preheating burner hearth DEG C, the pre-heat treatment 30 minutes;C. one end that the aluminum alloy plate materials for preheating completion are come out from burner hearth is withstood on support agency, burner hearth The hydraulic cutter in exit to preheating complete aluminium alloy directly carry out online it is fervent, scale off blank will be in its own gravity Under the action of fall directly into lower section feeding chute on.In this way, realize the on-line continuous production effect in melting process, preheating Process is directly completed in the stock stage.
When step d. is forged and pressed, in a manner that first forging and finish-forging substep carry out, and first will before first forging and finish-forging First forging mould and finish-forging die were heated to 450 DEG C, and the spraying lubricant on die-face, the lubrication in 20 minutes Blank after earnestly is put into just forging mould, is forged and pressed and forged with 1500 tons of forging press by agent such as synthetic wax etc. First base is put into finish-forging die and forges whole base by first base, finish-forging step.
Before flow-forming step, also need to carry out step e. by dish type blank(Whole base)It is punched out bulging;It is walked afterwards The blank of punching bulging is put into spinning machine and carries out rotary press modelling, on horizontal spinning machine, aluminium alloy wheel hub is forged by rapid f. spinning Dabbing base is held out against with tail top on spinning machine core, is driven plug and aluminium alloy wheel hub forging and stamping blank rotation by main shaft, is revolved simultaneously Material is extruded on the core of rotation by pinch roller from aluminium alloy wheel hub forging and stamping blank one side, and aluminium alloy wheel hub is forged and pressed hair during spinning Base blank heating makes generation continuously be plastically deformed by spinning, obtains forging rotation aluminium alloy wheel hub.
Step g. heat treatments and machining are finally carried out, is heat-treated and is heat-treated for T6, carries out the laggard pedestrian of solution heat treatment The state of man-hour effect, machining then carry out the processing such as trimming, polishing, polishing and application, last packaging and storage.
Embodiment 2, a kind of wheel hub forging method, referring to attached drawing 1, be broadly divided into stock, forging and stamping, spinning, heat treatment and These big steps are machined, are the 6061 aluminium alloy extruded of 65mm by thickness on the basis of one 17 inches of aluminium alloy wheel hub Plate is earnestly into the box-shaped blank that size is 350mm × 350mm × 65mm;
The stock stage therein is in the present embodiment continous way production technology, and a. will use extruder after aluminium bar founding Squeeze out the aluminum alloy plate materials of 350mm × 65mm;B. the aluminum alloy plate materials of extrusion are transmitted online and is heated up to 470 into preheating burner hearth DEG C, the pre-heat treatment 40 minutes;C. one end that the aluminum alloy plate materials for preheating completion are come out from burner hearth is withstood on support agency, burner hearth The hydraulic cutter in exit to preheating complete aluminium alloy directly carry out online it is fervent, scale off blank will be in its own gravity Under the action of fall directly into lower section feeding chute on.In this way, realize the on-line continuous production effect in melting process, preheating Process is directly completed in the stock stage.
When step d. is forged and pressed, in a manner that first forging and finish-forging substep carry out, and first will before first forging and finish-forging First forging mould and finish-forging die were heated to 460 DEG C, and the spraying lubricant on die-face, the lubrication in 25 minutes Blank after earnestly is put into just forging mould, is forged and pressed and forged with 1500 tons of forging press by agent such as synthetic wax etc. First base is put into finish-forging die and forges whole base by first base, finish-forging step.
Before flow-forming step, also need to carry out step e. by dish type blank(Whole base)It is punched out bulging;It is walked afterwards The blank of punching bulging is put into spinning machine and carries out rotary press modelling, on horizontal spinning machine, aluminium alloy wheel hub is forged by rapid f. spinning Dabbing base is held out against with tail top on spinning machine core, is driven plug and aluminium alloy wheel hub forging and stamping blank rotation by main shaft, is revolved simultaneously Material is extruded on the core of rotation by pinch roller from aluminium alloy wheel hub forging and stamping blank one side, and aluminium alloy wheel hub is forged and pressed hair during spinning Base blank heating makes generation continuously be plastically deformed by spinning, obtains forging rotation aluminium alloy wheel hub.
Step g. heat treatments and machining are finally carried out, is heat-treated and is heat-treated for T6, carries out the laggard pedestrian of solution heat treatment The state of man-hour effect, machining then carry out the processing such as trimming, polishing, polishing and application, last packaging and storage.
Embodiment 3, a kind of wheel hub forging method, referring to attached drawing 1, be broadly divided into stock, forging and stamping, spinning, heat treatment and These big steps are machined, are the 6061 aluminium alloy extruded of 58mm by thickness on the basis of one 17 inches of aluminium alloy wheel hub Plate is earnestly into the box-shaped blank that size is 370mm × 370mm × 58mm;
The stock stage therein is in the present embodiment continous way production technology, and a. will use extruder after aluminium bar founding Squeeze out the aluminum alloy plate materials of 370mm × 58mm;B. the aluminum alloy plate materials of extrusion are transmitted online and is heated up to 450 into preheating burner hearth DEG C, the pre-heat treatment 40 minutes;C. one end that the aluminum alloy plate materials for preheating completion are come out from burner hearth is withstood on support agency, burner hearth The hydraulic cutter in exit to preheating complete aluminium alloy directly carry out online it is fervent, scale off blank will be in its own gravity Under the action of fall directly into lower section feeding chute on.In this way, realize the on-line continuous production effect in melting process, preheating Process is directly completed in the stock stage.
When step d. is forged and pressed, in a manner that first forging and finish-forging substep carry out, and first will before first forging and finish-forging First forging mould and finish-forging die were heated to 450 DEG C, and the spraying lubricant on die-face, the lubrication in 20 minutes Blank after earnestly is put into just forging mould, is forged and pressed and forged with 1500 tons of forging press by agent such as synthetic wax etc. First base is put into finish-forging die and forges whole base by first base, finish-forging step.
Before flow-forming step, also need to carry out step e. by dish type blank(Whole base)It is punched out bulging;It is walked afterwards The blank of punching bulging is put into spinning machine and carries out rotary press modelling, on horizontal spinning machine, aluminium alloy wheel hub is forged by rapid f. spinning Dabbing base is held out against with tail top on spinning machine core, is driven plug and aluminium alloy wheel hub forging and stamping blank rotation by main shaft, is revolved simultaneously Material is extruded on the core of rotation by pinch roller from aluminium alloy wheel hub forging and stamping blank one side, and aluminium alloy wheel hub is forged and pressed hair during spinning Base blank heating makes generation continuously be plastically deformed by spinning, obtains forging rotation aluminium alloy wheel hub.
Step g. heat treatments and machining are finally carried out, is heat-treated and is heat-treated for T6, carries out the laggard pedestrian of solution heat treatment The state of man-hour effect, machining then carry out the processing such as trimming, polishing, polishing and application, last packaging and storage.
Embodiment 4, a kind of wheel hub forging method, referring to attached drawing 1, be broadly divided into stock, forging and stamping, spinning, heat treatment and These big steps are machined, are the 6061 aluminium alloy extruded of 41mm by thickness on the basis of one 17 inches of aluminium alloy wheel hub Plate is earnestly into the box-shaped blank that size is 440mm × 440mm × 41mm;
The stock stage therein is in the present embodiment continous way production technology, and a. will use extruder after aluminium bar founding Squeeze out the aluminum alloy plate materials of 440mm × 41mm;B. the aluminum alloy plate materials of extrusion are transmitted online and is heated up to 455 into preheating burner hearth DEG C, the pre-heat treatment 35 minutes;C. one end that the aluminum alloy plate materials for preheating completion are come out from burner hearth is withstood on support agency, burner hearth The hydraulic cutter in exit to preheating complete aluminium alloy directly carry out online it is fervent, scale off blank will be in its own gravity Under the action of fall directly into lower section feeding chute on.In this way, realize the on-line continuous production effect in melting process, preheating Process is directly completed in the stock stage.
When step d. is forged and pressed, in a manner that first forging and finish-forging substep carry out, and first will before first forging and finish-forging First forging mould and finish-forging die were heated to 420 DEG C, and the spraying lubricant on die-face, the lubrication in 20 minutes Blank after earnestly is put into just forging mould, is forged and pressed and forged with 1500 tons of forging press by agent such as synthetic wax etc. First base is put into finish-forging die and forges whole base by first base, finish-forging step.
Before flow-forming step, also need to carry out step e. by dish type blank(Whole base)It is punched out bulging;It is walked afterwards The blank of punching bulging is put into spinning machine and carries out rotary press modelling, on horizontal spinning machine, aluminium alloy wheel hub is forged by rapid f. spinning Dabbing base is held out against with tail top on spinning machine core, is driven plug and aluminium alloy wheel hub forging and stamping blank rotation by main shaft, is revolved simultaneously Material is extruded on the core of rotation by pinch roller from aluminium alloy wheel hub forging and stamping blank one side, and aluminium alloy wheel hub is forged and pressed hair during spinning Base blank heating makes generation continuously be plastically deformed by spinning, obtains forging rotation aluminium alloy wheel hub.
Step g. heat treatments and machining are finally carried out, is heat-treated and is heat-treated for T6, carries out the laggard pedestrian of solution heat treatment The state of man-hour effect, machining then carry out the processing such as trimming, polishing, polishing and application, last packaging and storage.
Comparative example 1
The present embodiment is on the basis of one 17 inches of automobile forging rotation aluminium alloy wheel hub:
The volume of blank according to needed for calculating the size of aluminium alloy wheel hub, by aluminum alloy hot rolling Blanking thick plank into round pie base Material;More specifically, by 6061 aluminum alloy hot rolling Blanking thick planks that thickness is 65mm into size be Φ 350mm × 65mm Round pie blank;Then, blank surface is cleaned and degreasing is handled;It is preferred that 6061 aluminum alloy hot rolling Slab is made of by hot rolling treatment using 6061 aluminium alloy cast ingots;
The round pie blank that above-mentioned punching obtains is put into heating furnace and is heated to 470 DEG C of progress the pre-heat treatments 40 Minute;
Before excellent suitability for press forming, mold is preheated to 460 DEG C with 25 minutes, separates the upper die and lower die of mold, And the spraying lubricant on die-face, the lubricant such as synthetic wax etc.;Then, by the above-mentioned round pie by preheating Blank is put into mold, is forged and pressed with 1500 tons of forging press, and the forging and stamping number is 2 times, enables aluminum alloy to wheel hub It preliminarily forms, obtains aluminium alloy wheel hub forging and stamping blank;
The above-mentioned aluminium alloy wheel hub forging and stamping blank preliminarily formed is put into horizontal spinning machine and carries out mould pressing, using Heat treatment and machining obtain finished product forging rotation aluminium alloy wheel hub;More specifically, on horizontal spinning machine, by above-mentioned preliminary shape Into aluminium alloy wheel hub forging and stamping blank held out against with tail top on horizontal spinning machine core, plug and aluminium alloy wheel hub are driven by main shaft Blank rotation is forged and pressed, while material is extruded on the core of rotation by spinning wheel from aluminium alloy wheel hub forging and stamping blank one side, spinning When by aluminium alloy wheel hub forge and press blank blank heating to 450 DEG C, by spinning generation is made continuously to be plastically deformed, makes wheel hub Wheel rim mould pressing using heat treatment and machining, obtains finished product forging rotation aluminium alloy wheel hub.
Comparative example 2
On the basis of one 17 inches of automobile forging rotation aluminium alloy wheel hub:
The volume of blank according to needed for calculating the size of aluminium alloy wheel hub, by the aluminium alloy bars of the Φ 250mm as cast conditions for being Material cuts into cylindric blank;Clean blank, except degreasing with 35 minutes by blank heating to 460 DEG C, keep the temperature 70 Minute, it is forged under 1000 tons of forcing presses 3 times, by blank jumping-up to Φ 350mm, obtains round pie blank;The casting The aluminium alloy bar of state is 6061 aluminium alloys, and 6061 aluminium alloy includes the chemical composition of consisting of:Si :0.4 ~0.8;Fe :0~0.7;Cu :0.15~0.4;Mn :0~0.15;Mg :0.8~1.2;Cr : 0.04~0.35;Zn :0~0.25;Ti :0~0.15;Surplus is aluminium;
Round pie blank obtained above is placed again into heating furnace and is heated to 440 DEG C~460 DEG C and preheats Processing 35 minutes;
Before excellent suitability for press forming, mold is preheated to 420 DEG C with 20 minutes, then, makes the upper die and lower die of mold Separation, and the spraying lubricant on die-face, the lubricant such as synthetic wax etc.;Then, by the above-mentioned circle by preheating Pie blank is put into mold, is forged and pressed with 1500 tons of forging press, and the forging and stamping number is 3 times, is enabled aluminum alloy to Wheel hub preliminarily forms, and obtains aluminium alloy wheel hub forging and stamping blank;
The above-mentioned aluminium alloy wheel hub forging and stamping blank preliminarily formed is put into horizontal spinning machine and carries out mould pressing, using Heat treatment and machining obtain finished product forging rotation aluminium alloy wheel hub;More specifically, on horizontal spinning machine, by above-mentioned preliminary shape Into aluminium alloy wheel hub forging and stamping blank held out against with tail top on horizontal spinning machine core, plug and aluminium alloy wheel hub are driven by main shaft Blank rotation is forged and pressed, while material is extruded on the core of rotation by spinning wheel from aluminium alloy wheel hub forging and stamping blank one side, spinning When by aluminium alloy wheel hub forge and press blank blank heating to 400 DEG C, by spinning generation is made continuously to be plastically deformed, makes wheel hub Wheel rim mould pressing, using heat treatment and machining, the heat treatment is preferably heat-treated using T6, and the machining includes The processing such as trimming, polishing, polishing and application obtain finished product forging rotation aluminium alloy wheel hub.
It chooses the forging rotation aluminium alloy wheel hub that above-described embodiment and comparative example obtain and carries out corresponding Mechanics Performance Testing, respectively It is sampled in wheel hub different piece, d3 × 30 are selected in wheel rim and spoke position using pole degree of drawing sample;It adopts at wheel rim position With sheet tensile sample, width b10 is selected, thickness is wheel rim original thickness, specifically according to GB/T228-2002 examination criterias Tension test is carried out, following table 1 is the forging rotation aluminium that the preparation method of embodiment 1 to embodiment 4 and comparative example 1 and 2 obtains The test result of alloy wheel hub, specific test result is as shown in the following table 1.
Table 1:
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of wheel hub forging method, which is characterized in that comprise the following steps:
A. profile extrusion passes through the aluminum alloy plate materials for the thickness and width that extruder extrusion is set;
B. preheat, the aluminum alloy plate materials squeezed out by the continuous on-line heating of heating equipment from extruder;
C. earnestly, the aluminum alloy plate materials being preheated are come out from heating equipment using the cutting of fervent technique and cuts into what is preset Length forms square blank, and the fervent technique includes hydraulic cutter, support agency, and the support agency is to will be from heating The aluminum alloy plate materials of equipment outflow are withstood, and the exit site that hydraulic cutter is arranged on heating equipment cuts preheated aluminum alloy plate materials It is disconnected;
D. forge, will earnestly after blank be put into mold and forge and press, form it into dish type;
E. dish type blank is punched out bulging;
F. the blank of punching bulging is put into spinning machine and carries out rotary press modelling;
G. the blank of rotary press modelling is heat-treated and is machined, obtain wheel hub finished product.
A kind of 2. wheel hub forging method according to claim 1, which is characterized in that the extruding raw material in the step a Derived from aluminium bar founding.
3. a kind of wheel hub forging method according to claim 1, which is characterized in that the step d point for just forging step and Finish-forging step, the just forging step will earnestly after blank be put into and just in forging mould and forge just base, the finish-forging step will First base is put into finish-forging die and forges whole base.
4. a kind of wheel hub forging method according to claim 1, which is characterized in that the preheating temperature of the step b is 430-470℃。
5. a kind of wheel hub forging method according to claim 3, which is characterized in that first will just be forged before first forging and finish-forging Mold and finish-forging die are heated to 420-460 DEG C.
6. a kind of wheel hub forging method according to claim 1, which is characterized in that the heat treatment of the step g is T6 heat Processing.
7. a kind of wheel hub forging method according to claim 2, which is characterized in that the aluminium bar is selected from 6XXX systems or 7XXX Line aluminium alloy.
8. a kind of wheel hub forging method according to claim 7, which is characterized in that in the step d, 6XXX line aluminium alloys Forging temperature be 510~560 DEG C;The forging temperature of 7XXX line aluminium alloys is 420~470 DEG C.
9. a kind of wheel hub forging method according to claim 1, which is characterized in that extruder in the step a squeezes Go out pressure for 700-900T.
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CN110731685A (en) * 2019-09-05 2020-01-31 浙江炊大王炊具有限公司 Spray plating process for pots

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CN103481029B (en) * 2013-09-16 2016-01-20 浙江巨科铝业股份有限公司 The preparation method of aluminium alloy wheel hub is revolved in a kind of forging
CN104625643B (en) * 2015-01-12 2018-03-27 江苏珀然股份有限公司 A kind of aluminium alloy wheel hub forging method
CN105268903A (en) * 2015-11-04 2016-01-27 浙江巨科实业股份有限公司 Forging forming method of aluminum alloy hub
CN105269258A (en) * 2015-11-04 2016-01-27 浙江巨科实业股份有限公司 Manufacturing method for forging aluminum alloy hub

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