CN107447136A - A kind of automobile brake disc or brake rim aluminium alloy and its spray deposition processing - Google Patents
A kind of automobile brake disc or brake rim aluminium alloy and its spray deposition processing Download PDFInfo
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- CN107447136A CN107447136A CN201710649192.2A CN201710649192A CN107447136A CN 107447136 A CN107447136 A CN 107447136A CN 201710649192 A CN201710649192 A CN 201710649192A CN 107447136 A CN107447136 A CN 107447136A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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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
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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Abstract
The present invention relates to a kind of automobile brake disc or brake rim aluminium alloy and its spray deposition processing.Automobile brake disc or the brake rim aluminium alloy, include the element of following percentage by weight：Silicon：5 50%, iron：0.01 6%, nickel：0.01 6%, copper：0.01 6%, magnesium：0.01 3%, zirconium：0.01 2%, chromium：0.01 2%, titanium：0.01 2%, manganese：0.01 2%, cobalt：0.01 2%, surplus is aluminium.Automobile brake disc or the brake rim aluminium alloy has light, excellent thermal conductivity, there is the advantages of higher-strength, wearability, fatigue performance, the development for automobile industry, has very high practical value and meaning.
Description
Technical field
The invention belongs to auto parts machinery technical field of alloy, and in particular to a kind of automobile brake disc or brake rim are closed with aluminium
Gold and its spray deposition processing.
Background technology
Brake system of car has two kinds of forms of disc brake and drum brake, and current brake disc/drum uses cast iron quality, with gray cast iron
HT250 is representative, and casting technique produces.Excellent brake disc/drum should possess lightweight, enough intensity, excellent wearability, foot
Enough high-temperature behaviors, excellent heat dispersion and fatigue performance.Due to being limited to by material and casting technique, cast iron brake
Disk/drum heavier-weight, and under spring, increase automobile fuel consumption, influence acceleration.
In addition, cast iron quality thermal conductivity factor is relatively low, only about 58W/ (mk) is short in high speed braking or continuous braking
Time friction produces big calorimetric, and relatively low thermal conductivity causes heat not distribute in time, can trigger brake disc/drum heat fading, shadow
Ring braking effect and service life.
Chinese patent CN201310058382.9 proposes the high sial brake disc/drum of method production using semi-solid casting,
But specific performance parameter is not divulged.Though semi-solid casting method is better than conventional casting techniques, semi solid slurry is easily involved in gas,
Cast-internal is caused gas hole defect to be present, typically can not further heat treatment reinforcement.Semi-solid casting method mechanical property is slightly better than
General casting, but far away from being injected into shape forging technique.Material composition limitation can be broken through by being injected into shape forging technique, further
Improve intensified element content, high-performance aluminium alloy brake disc/drum that production routine casting and semi-solid casting can not produce.
The content of the invention
Big to solve existing cast iron brake disc/drum weight, the defects of poor thermal conductivity, the present invention proposes light, the heat conduction of one kind
Excellent performance, and with higher-strength, wearability, the automobile brake disc of fatigue performance or brake rim aluminium alloy and its spray
Penetrate forming technology.
Based on disadvantage mentioned above of the prior art, present inventor, which turns to, finds other alloys making brake disc/drum.
Finally give automobile brake disc or the brake rim aluminium alloy, automobile brake disc or brake rim the aluminium alloy thermal conductivity factor
Reach 100-150W/ (mk), the capacity of heat transmission is 2-3 times of cast iron brake disc/drum, can distribute brake heat in time, ensure
The reliability of brakes.Cast iron brake disc/drum requires that tensile strength is not less than 210MPa, hardness between 187-241HB,
Automobile brake disc or brake rim the aluminium alloy tensile strength reaches 400-550MPa, and hardness is between 190-250HB, completely
Mechanical property requirements can be met.
It is a kind of new technology for preparing high-performance aluminium alloy parts to spray shape fit forging, is especially suitable for preparing height
By force, wear-resisting, heat-resisting aluminium alloy.Fast with respect to casting technique spray deposition processing cooling velocity, material grains are tiny, hardening constituent particle
Dispersed precipitate, no conventional cast defect, substantially increases the strength of materials, hardness, frictional behaviour and fatigue behaviour.
The technical scheme is that：A kind of automobile brake disc or brake rim aluminium alloy, including following percentage by weight
Element：
Silicon：5-50%, iron：0.01-6%, nickel：0.01-6%, copper：0.01-6%, magnesium：0.01-3%, zirconium：0.01-
2%, chromium：0.01-2%, titanium：0.01-2%, manganese：0.01-2%, cobalt：0.01-2%, surplus are aluminium.
Automobile brake disc or the brake rim aluminium alloy has light, excellent thermal conductivity, there is higher-strength, wear-resisting
The advantages of property, fatigue performance.
It is excellent to ensure that the automobile brake disc or brake rim aluminium alloy have the intensity of more preferable heat conductivility and Geng Gao
The technical scheme of choosing is that the automobile brake disc or brake rim include the element of following percentage by weight with aluminium alloy：
Silicon：15-35%, iron：0.1-5%, nickel：0.1-5%, copper：0.1-5%, magnesium：0.1-2%, zirconium：0.1-1.5%,
Chromium：0.1-1.5%, titanium：0.1-1.5%, manganese：0.1-1.5%, cobalt：0.1-1.5%, surplus are aluminium.
Further, the automobile brake disc or brake rim include the element of following percentage by weight with aluminium alloy：
Silicon：30%, iron：3%, nickel：3%, copper：3%, magnesium：1.5%, zirconium：1%, chromium：1%, titanium：1%, manganese：1%, cobalt：
1%, surplus is aluminium.
Present invention also offers a kind of automobile brake disc or the spray deposition processing of brake rim aluminium alloy, including with
Lower step：
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using inert gas, obtains injection deposition blank；
C, blanking：The epidermis of the injection deposition blank is removed, and the injection deposition blank after peeling is added at 100-800 DEG C
Hot 0.5-12 hours；
D, forge：Shaping dies is preheated to 100-700 DEG C in advance, and the obtained injection deposition blanks of step C are forged, obtained
To forging；
E, it is heat-treated：By the forging carry out solution treatment, 400-600 DEG C of solid solubility temperature, solution time 0.5-12 hours,
Solution treatment completes quenching in 20 seconds, quenches 10-80 DEG C of water temperature, second cool time 2-80, Ageing Treatment, timeliness is carried out after quenching
Temperature is 100-250 DEG C, and aging time is 2-30 hours, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, obtain automobile brake disc or brake
Drum finished product.
The present invention prepares automobile brake disc or the brake rim aluminium alloy using the technique of injection shaping, and injection shaping is
Alloy liquid stream is atomized into tiny molten drop with high-pressure inert gas, flies and cools down under high velocity air, in not yet solidification completely
Before be deposited into a kind of technique of blank.It, which has, obtains material structure fine uniform, can suppress the quickly solidification such as gross segregation
The various advantages of technology, there is the advantage that one step is completed from alloy melting to near-net forming again, injection shaping is applied to described
The preparation of automobile brake disc or brake rim has advantages below：
1. low oxygen content：Due to deposition process time very short (about 10-3s) and by inert gas shielding, deposition oxygen contains
Amount is far below the level of similar powder metallurgy, and similar to similar casting alloy.
2. the microscopic structure quickly solidified：Including forming tiny equiaxed grain structure (10~100 μm), gross segregation disappears
Remove, microscopic segregation and the generation of segregation phase receive suppressions, alloying component evenly with can form metastable supersaturation solid solution.
3. alloy property improves：Performance (such as anti-corrosion, wear-resisting, magnetic and intensity and the toughness physics and chemistry of spray formed material
Performance and mechanical property) it is greatly improved than conventional cast forging material, it is suitable with powdered metallurgical material.Alloy hot-working character is big
It is big to improve, make generally can not the founding materials of deformation processing can be with heat processing and forming, it might even be possible to obtain superplasticity.
4. technological process is short, cost is low：It is at present process route most short from melting to final products.Powder smelting can be avoided
The possibility that golden intermediate step pollutes, increase product reliability, there is stronger competitiveness than powder metallurgy product.
5. high efficiency：Single ingot blank quality is up to more than 1t and high yield rate, it is clear that is advantageous to industrialized production.
In order to obtain the automobile brake disc of given size or brake rim, preferable technical scheme is in step B, to use nitrogen
Gas carries out injection shaping to the aluminium alloy, obtains a diameter of 100-500mm injection deposition blank.
Further, the crystallite dimension of the injection deposition blank is not more than 30 μm.
Preferably, in step C, the epidermis of the injection deposition blank is removed using lathe, and by the jet deposition after peeling
Base heats 2-10 hours in 200-700 DEG C of heating furnace.
For the benefit of forging fills type and the demoulding, and preferable technical scheme is, in step D, after shaping dies preheats in advance,
After forming mould surface spraying releasing agent, reuse hydraulic press and injection deposition blank is forged.
Further, the releasing agent is water-based graphite releasing agent or oil-based release agent；The maximum pressure of the hydraulic press
For 5000T.
To ensure the mechanical performance of the automobile brake disc or brake rim forging, preferable technical scheme is, in step E,
After machining, cast outside automobile brake disc or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile
Brake disc or brake rim finished product.
Beneficial effects of the present invention are：
1st, the invention provides a kind of automobile brake disc or brake rim aluminium alloy, the automobile brake disc or brake rim to use
Aluminium alloy thermal conductivity factor reaches 120-180W/ (mk), and the capacity of heat transmission is 2-3 times of cast iron brake disc/drum, can be by the heat that brakes
Distribute in time, ensure that the reliability of brakes.Cast iron brake disc/drum requires that tensile strength is not less than 210MPa, and hardness exists
Between 187-241HB, automobile brake disc or brake rim the aluminium alloy tensile strength reaches 400-550MPa, and hardness is in 190-
Between 250HB, mechanical property requirements can be met completely.
2nd, present invention also offers the automobile brake disc or the spray deposition processing of brake rim aluminium alloy, the spray
Forming technology is penetrated on the premise of the performance of final finished (i.e. automobile brake disc or brake rim) is ensured, biography can also be completely eliminated
Metallurgical imperfection present in system casting and semi-solid casting, breaks through the limitation of material composition, further improves intensified element content.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the metallograph of the automobile brake disc or brake rim aluminium alloy obtained in embodiment 6；
Fig. 2 is the metallograph of the automobile brake disc or brake rim aluminium alloy obtained in embodiment 7.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are resulting on the premise of creative work is not made to be owned
Other embodiment, belong to the scope that the present invention is protected.
Embodiment 1
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：5%, iron：6%, nickel：0.01%, copper：6%, magnesium：0.01%, zirconium：2%, chromium：0.01%, titanium：2%, manganese：
0.01%, cobalt：2%, surplus is aluminium.
The present embodiment additionally provides the preparation method of automobile brake disc or the brake rim aluminium alloy, including following step
Suddenly：
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 100mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 29 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 800 DEG C
Heating furnace in heat 0.5 hour；
D, forge：Shaping dies is preheated to 700 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 400 DEG C of solid solubility temperature, solution time 12 hours, solution treatment
To complete quenching within 20 seconds, quench 10 DEG C of water temperature, 80 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 100 DEG C, when
It is 30 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 2
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：50%, iron：0.01%, nickel：6%, copper：0.01%, magnesium：3%, zirconium：0.01%, chromium：2%, titanium：0.01%,
Manganese：2%, cobalt：0.01%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 500mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 25 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 100 DEG C
Heating furnace in heat 12 hours；
D, forge：Shaping dies is preheated to 100 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 600 DEG C of solid solubility temperature, solution time 0.5 hour, at solid solution
Reason completes quenching in 15 seconds, quenches 80 DEG C of water temperature, 2 seconds cool times, Ageing Treatment is carried out after quenching, and aging temp is 250 DEG C, when
It is 2 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 3
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：30%, iron：3%, nickel：3%, copper：3%, magnesium：1.5%, zirconium：1%, chromium：1%, titanium：1%, manganese：1%, cobalt：
1%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 300mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 20 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 450 DEG C
Heating furnace in heat 6 hours；
D, forge：Shaping dies is preheated to 400 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 500 DEG C of solid solubility temperature, solution time 6 hours, solution treatment
To complete quenching within 10 seconds, quench 45 DEG C of water temperature, 40 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 180 DEG C, when
It is 16 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 4
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：15%, iron：5%, nickel：0.1%, copper：5%, magnesium：0.1%, zirconium：1.5%, chromium：0.1%, titanium：1.5%,
Manganese：0.1%, cobalt：1.5%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 200mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 22 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 700 DEG C
Heating furnace in heat 2 hours；
D, forge：Shaping dies is preheated to 600 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 450 DEG C of solid solubility temperature, solution time 10 hours, solution treatment
To complete quenching within 12 seconds, quench 20 DEG C of water temperature, 60 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 120 DEG C, when
It is 24 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 5
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：35%, iron：0.1%, nickel：5%, copper：0.1%, magnesium：2%, zirconium：0.1%, chromium：1.5%, titanium：0.1%,
Manganese：1.5%, cobalt：0.1%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 400mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 18 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 200 DEG C
Heating furnace in heat 10 hours；
D, forge：Shaping dies is preheated to 200 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 550 DEG C of solid solubility temperature, solution time 3 hours, solution treatment
To complete quenching within 20 seconds, quench 70 DEG C of water temperature, 30 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 210 DEG C, when
It is 8 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 6
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：26.37%, iron：4.29%, nickel：3.21%, copper：1.22%, magnesium：0.98%, zirconium：0.08%, chromium：
0.92%, titanium：0.82%, manganese：1.11%, cobalt：0.03%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 200mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 12 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 420 DEG C
Heating furnace in heat 3 hours；
D, forge：Shaping dies is preheated to 400 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 520 DEG C of solid solubility temperature, solution time 3 hours, solution treatment
To complete quenching within 14 seconds, quench 30 DEG C of water temperature, 50 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 175 DEG C, when
It is 8 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Embodiment 7
A kind of automobile brake disc or brake rim aluminium alloy, include the element of following percentage by weight：
Silicon：23.11%, iron：0.39%, nickel：0.52%, copper：1.3%, magnesium：0.2%, zirconium：0.1%, chromium：0.08%,
Titanium：0.08%, manganese：0.08%, cobalt：0.04%, surplus is aluminium.
A, melting：Matched according to above-mentioned element, the aluminium alloy of melting manufacture automobile brake disc or brake rim aluminium alloy is former
Material, is mixed to get aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using nitrogen, obtains a diameter of 300mm jet deposition
Base, the crystallite dimension of the injection deposition blank is 8 μm；
C, blanking：The epidermis of the injection deposition blank is removed using lathe, and by the injection deposition blank after peeling at 400 DEG C
Heating furnace in heat 4 hours；
D, forge：Shaping dies is preheated to 380 DEG C in advance, after forming mould surface sprays water-based graphite releasing agent, then
The obtained injection deposition blanks of step C are forged using hydraulic press, obtain forging；The maximum pressure of the hydraulic press is
5000T；
E, it is heat-treated：The forging is subjected to solution treatment, 500 DEG C of solid solubility temperature, solution time 2 hours, solution treatment
To complete quenching within 13 seconds, quench 25 DEG C of water temperature, 60 seconds cool times, Ageing Treatment is carried out after quenching, aging temp is 185 DEG C, when
It is 6 hours to imitate the time, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, after machining, in braking automobile
Cast outside disk or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
Experimental example
This experimental example is that the obtained automobile brake discs of embodiment 1-7 or brake rim end properties are detected, obtained inspection
It is as shown in table 1 to survey data：
Table 1：The automobile brake disc or the performance test results table of brake rim that embodiment 1-7 is obtained
| Specimen coding | Tensile strength/MPa | Hardness/HB | Thermal conductivity W/ (mk) | Density g/cm3 |
| HT250 | ≥250 | 207-255 | 58 | 7.15 |
| Embodiment 1 | 425 | 190 | 100 | 2.90 |
| Embodiment 2 | 396 | 201 | 135 | 2.76 |
| Embodiment 3 | 505 | 240 | 120 | 2.86 |
| Embodiment 4 | 478 | 196 | 130 | 2.76 |
| Embodiment 5 | 408 | 198 | 110 | 2.74 |
| Embodiment 6 | 470 | 220 | 125 | 2.71 |
| Embodiment 7 | 420 | 195 | 125 | 2.63 |
Table 1 can illustrate the heat conductivility good heat-conductivity of the automobile brake disc that embodiments of the invention obtain or brake rim
In 100-135W/ (mk), the 58W/ (mk) far above HT250, further, since be acieral, density also much smaller than
HT250, there is the light and advantage of rapid heat dissipation.Tensile strength is also far above HT250 standard, and hardness also basically reaches automobile brake
The performance requirement of hull or brake rim, it is a kind of automobile brake disc or brake rim aluminium alloy well.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of automobile brake disc or brake rim aluminium alloy, it is characterised in that include the element of following percentage by weight：
Silicon：5-50%, iron：0.01-6%, nickel：0.01-6%, copper：0.01-6%, magnesium：0.01-3%, zirconium：0.01-2%, chromium：
0.01-2%, titanium：0.01-2%, manganese：0.01-2%, cobalt：0.01-2%, surplus are aluminium.
2. automobile brake disc according to claim 1 or brake rim aluminium alloy, it is characterised in that including following weight hundred
Divide the element of ratio：
Silicon：15-35%, iron：0.1-5%, nickel：0.1-5%, copper：0.1-5%, magnesium：0.1-2%, zirconium：0.1-1.5%, chromium：
0.1-1.5%, titanium：0.1-1.5%, manganese：0.1-1.5%, cobalt：0.1-1.5%, surplus are aluminium.
3. automobile brake disc according to claim 2 or brake rim aluminium alloy, it is characterised in that including following weight hundred
Divide the element of ratio：
Silicon：30%, iron：3%, nickel：3%, copper：3%, magnesium：1.5%, zirconium：1%, chromium：1%, titanium：1%, manganese：1%, cobalt：1%,
Surplus is aluminium.
4. according to any automobile brake discs of claim 1-3 or the spray deposition processing of brake rim aluminium alloy, its feature
It is, comprises the following steps：
A, melting：Match, the aluminium alloy raw material of melting manufacture automobile brake disc or brake rim aluminium alloy, mix according to above-mentioned element
Conjunction obtains aluminium alloy；
B, injection shaping：Injection shaping is carried out to the aluminium alloy using inert gas, obtains injection deposition blank；
C, blanking：The epidermis of the injection deposition blank is removed, and the injection deposition blank after peeling is heated at 100-800 DEG C
0.5-12 hours；
D, forge：Shaping dies is preheated to 100-700 DEG C in advance, and the obtained injection deposition blanks of step C are forged, forged
Part；
E, it is heat-treated：The forging is subjected to solution treatment, 400-600 DEG C of solid solubility temperature, solution time 0.5-12 hours, solid solution
Processing completes quenching in 20 seconds, quenches 10-80 DEG C of water temperature, second cool time 2-80, Ageing Treatment, aging temp is carried out after quenching
For 100-250 DEG C, aging time is 2-30 hours, after completing heat treatment, obtains automobile brake disc or brake rim forging；
F, it is machined：Automobile brake disc or brake rim forging are machined, obtain automobile brake disc or brake rim into
Product.
5. spray deposition processing according to claim 4, it is characterised in that in step B, using nitrogen to the aluminium alloy
Injection shaping is carried out, obtains a diameter of 100-500mm injection deposition blank.
6. spray deposition processing according to claim 5, it is characterised in that in step B, the crystal grain of the injection deposition blank
Size is not more than 30 μm.
7. spray deposition processing according to claim 4, it is characterised in that in step C, the injection is removed using lathe
The epidermis of deposit preform, and the injection deposition blank after peeling is heated into 2-10 hours in 200-700 DEG C of heating furnace.
8. spray deposition processing according to claim 4, it is characterised in that in step D, after shaping dies preheats in advance,
After forming mould surface sprays releasing agent, reuse hydraulic press and injection deposition blank is forged.
9. spray deposition processing according to claim 8, it is characterised in that in step D, the releasing agent is water-based graphite
Releasing agent or oil-based release agent；The maximum pressure of the hydraulic press is 5000T.
10. spray deposition processing according to claim 4, it is characterised in that in step E, after machining, stopped in automobile
Cast outside hull or brake rim using cast aluminium alloy gold ZL101A or ZL205A, obtain automobile brake disc or brake rim finished product.
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| CN109082564A (en) * | 2018-09-17 | 2018-12-25 | 安徽博耐克摩擦材料有限公司 | A kind of aluminum alloy materials for brake disc |
| CN109136665A (en) * | 2018-09-17 | 2019-01-04 | 安徽博耐克摩擦材料有限公司 | A kind of aluminum alloy materials for brake drum |
| CN110218915A (en) * | 2019-07-05 | 2019-09-10 | 江苏豪然喷射成形合金有限公司 | A kind of AlSi20Fe5Ni2The preparation method of blank |
| CN111471887A (en) * | 2020-05-14 | 2020-07-31 | 保定立中东安轻合金部件制造有限公司 | Brake disc and manufacturing method and manufacturing device thereof |
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