CN109530659A - A kind of 6061 aluminium alloy of the outer layer 40Cr steel internal layer not compound ring manufacturing method of uniform thickness - Google Patents
A kind of 6061 aluminium alloy of the outer layer 40Cr steel internal layer not compound ring manufacturing method of uniform thickness Download PDFInfo
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- CN109530659A CN109530659A CN201811617257.6A CN201811617257A CN109530659A CN 109530659 A CN109530659 A CN 109530659A CN 201811617257 A CN201811617257 A CN 201811617257A CN 109530659 A CN109530659 A CN 109530659A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Metal Rolling (AREA)
Abstract
A kind of 6061 aluminium alloy of the outer layer 40Cr steel internal layer not compound ring manufacturing method of uniform thickness, belong to ring manufacturing technology field, it is characterized by comprising following processing steps: 1) in centrifugal casting machine upper outer layer 40Cr steel, pouring temperature is 1540 ~ 1560 DEG C, start to be poured 6061 aluminium alloy of internal layer when outer layer 40Cr steel temperature is down to 580 ~ 600 DEG C, pouring temperature is 650 ~ 670 DEG C, and the duration of pouring is 8 ~ 12s；2) with metal die casting mold slow cooling to room temperature, depanning；3) two-step homogenization is handled；4) the not hot rolling of uniform thickness composite ring blank: according to outer layer and internal layer not uniform thickness the characteristics of, feed parameters according to 3 stage controls；5) it makes annealing treatment.The invention has the advantages that can be improved the structure stability of compound ring, surface abrasion resistance and bond strength, manufacturing process flow is short, energy-saving material-saving, saves equipment investment, high production efficiency.
Description
Technical field
The invention belongs to ring manufacturing technology fields, and in particular to a kind of 6061 aluminium alloy of outer layer 40Cr steel internal layer not uniform thickness
Compound ring manufacturing method.
Background technique
6061 aluminium alloy compound ring of outer layer 40Cr steel internal layer, can be by the obdurability of 40Cr steel, wearability and aluminium alloy
Light, corrosion resistance, weldability, excellent electrical and thermal conductivity organically combine, can reach the diversification of components performance and subtract
The effect of weight, its physics, chemistry and mechanical property are all more more advantageous than single metal material ring, are increasingly becoming
The substitute products of valuable monometallic ring have as lightweight connection, driving member in automobile, chemical industry and military equipment industry
Value is widely applied；The method of such compound ring is produced both at home and abroad at present mainly using the mechanical nested assembling of fitting with one heart two
A single metal ring forging stock recycles Ring Rolling Machine to carry out hot rolling, it is made to generate enlarged-diameter, wall thickness reduction, cross section profile
The continuous local plastic of forming deforms, and this method is there are preforming before rolling is various, including cogging, jumping-up and punching and more
Secondary heating process, shaping equipment investment is huge, and rolling process stability is poor, and the energy and waste of material are serious, is suitable only for straight
The compound ring of the wall thickness such as the small, ectonexine of diameter produces；When manufacture 6061 aluminium alloy wall thickness of internal layer is larger, outer layer 40Cr wall thickness is smaller
Not uniform thickness compound ring when, if easily caused using existing manufacturing method, warpage occurs for the relatively thin side of wall thickness, side is split, interior
Outer layer interface is almost only mechanical bond interface without atom diffusion bond, and the molten touching of metallurgy combines effect and poor quality, answers
Power is concentrated seriously, and the state modulators such as temperature and feed speed for depending only on rolling process are unable to fully inhibit brittle
Intermediate compound FeAl, FeAl3、Fe2Al5It generates, so that bimetallic contact Interface Cracking tendency is larger, reduces compound ring
Bond strength, be degrading its military service performance.
Summary of the invention
The purpose of the present invention is to provide a kind of 6061 aluminium alloy of outer layer 40Cr steel internal layer not compound ring manufacturers of uniform thickness
Method can effectively overcome disadvantage of the existing technology.
What the object of the invention was realized in, it is characterised in that comprise the following steps that:
(1) as shown in Figure 1, in centrifugal casting machine upper outer layer 40Cr steel, pouring temperature is 1540 ~ 1560 DEG C, poring rate
For 270 ~ 360g/s, the duration of pouring is 15 ~ 20s, and metal die casting mold preheating temperature is 190 ~ 220 DEG C, casting mold revolving speed is 180 ~
200r/min, start when outer layer 40Cr steel temperature is down to 580 ~ 600 DEG C be poured 6061 aluminium alloy of internal layer, pouring temperature be 650 ~
670 DEG C, poring rate is 226 ~ 340g/s, and casting mold revolving speed is 260 ~ 290r/min, and the duration of pouring is 8 ~ 12s, to internal layer 6061
When the surface temperature of aluminium alloy is down to 120 ~ 150 DEG C, shut down；
(2) with metal die casting mold slow cooling to room temperature, depanning obtains the size of not uniform thickness composite ring blank are as follows: outer layer 40Cr
The outer diameter of steelD 01=240 ~ 300mm, wall thicknessB 01=20 ~ 25mm, the internal diameter of 6061 aluminium alloy of internal layerD 02=120 ~ 160mm, wall thicknessB 02=
40 ~ 45mm, ectonexine inference diameterd 0=200 ~ 250mm, axial heightH 0=50 ~ 55mm, as shown in Figure 2；
(3) two-step homogenization is handled: above-mentioned not uniform thickness composite ring blank is heated to 470 ~ 490 DEG C, keeps the temperature 3 ~ 5h, then after
It is continuous to be heated to 520 ~ 540 DEG C, 8 ~ 12h is kept the temperature, then air-cooled to room temperature；
(4) the not hot rolling of uniform thickness composite ring blank: uniform thickness composite ring blank is transported immediately after above-mentioned Homogenization Treatments
To numerical control diameter axial ring rolling machine, as shown in figure 3, driven roller is drive roll, core roller makees radial feed movement, and end face cone roller is shaftless
To feeding, guide roller plays guiding and feedback signal, and control rolling initial temperature is 430 ~ 450 DEG C, and rolling finishing temperature is
390 ~ 400 DEG C, according to outer layer and internal layer not uniform thickness the characteristics of, feed parameters according to 3 stage controls, first the amount of feeding be 20 ~
30%, feed speed be 1.8 ~ 2.2mm/s, outer layer rolling ratio be 1.25 ~ 1.4, internal layer rolling ratio be 1.1 ~ 1.2, feeding the time be
4~6s；Then the amount of feeding is 50 ~ 60%, and feed speed is 2.6 ~ 3.0mm/s, and outer layer rolling ratio is 1.5 ~ 1.65, internal layer rolling ratio
It is 1.55 ~ 1.6, the feeding time is 6 ~ 8s；The last amount of feeding is 5 ~ 10%, and feed speed is 0.4 ~ 0.8mm/s, outer layer rolling ratio
It is 1.1 ~ 1.2, internal layer rolling ratio is 1.1 ~ 1.2, and the feeding time is 3 ~ 5s, reaches and compound ring is air-cooled to room after required size
Temperature, obtain the size of the compound ring of not uniform thickness are as follows: the outer diameter of outer layer 40Cr steelD 1=330 ~ 380mm, wall thicknessB 1=10 ~ 15mm, it is interior
The internal diameter of 6061 aluminium alloy of layerD 2=270 ~ 300mm, wall thicknessB 2=20 ~ 25mm, ectonexine inference diameterd=310 ~ 350mm, it is axial
HighlyH=48 ~ 50mm, as shown in Figure 4；
(5) make annealing treatment: it is 400 ~ 420 DEG C that the compound ring of not uniform thickness of hot rolling forming, which is heated to temperature, keeps the temperature 3 ~ 5h, most
Furnace cooling is to room temperature afterwards.
The invention has the advantages and beneficial effects that: the present invention by the obdurability of 40Cr steel, wearability and aluminium alloy it is light,
Corrosion resistance, weldability, excellent electrical and thermal conductivity organically combine, larger, outer by manufacture 6061 aluminium alloy wall thickness of internal layer
The layer lesser compound ring of not uniform thickness of 40Cr wall thickness can achieve the effect of the diversification of components performance and whole loss of weight；And
The present invention gives technological parameters such as suitable poring rate, rolling temperature, the feed speed in different rolling stage and the amount of feeding,
It can inhibit brittle intermediate compound FeAl, FeAl3、Fe2Al5It generates, so that bimetallic contact Interface Cracking tendency is small, hands over
The molten touching binding performance of interface metallurgy with higher, can be improved structure stability, surface abrasion resistance and the combination of compound ring
Intensity, manufacturing process flow is short, energy-saving material-saving, saves equipment investment, high production efficiency.
Detailed description of the invention
Fig. 1 is not uniform thickness annular blank vertical centrifugal casting schematic diagram；
Fig. 2 is 6061 aluminium alloy of centrifugally cast external layer 40Cr steel internal layer not uniform thickness annular blank；
Fig. 3 be not the compound ring journal axle of uniform thickness to hot rolling schematic diagram；
Fig. 4 is 6061 aluminium alloy of the outer layer 40Cr steel internal layer not compound ring of uniform thickness.
In figure: the upper sand cushion of 1-5-die cover plate of casting ladle 2-running channel, 3-cast gate, 4-locking pin 6-
Outer layer 8-cooling water pipe, 9-metal die casting mold 10-of the internal layer 7 '-blank of 6 '-lower 7-blanks of sand cushion
11-guide roller of driven roller 12-compound ring outer layer 13-compound ring, 14-core of internal layer roller 15-end
Face cone roller；
D 01The outer layer outer diameter of-blank,D 02The internal layer outer diameter of-blank,d 0The ectonexine inference diameter of-blank,B 01- hair
The outer layer wall thickness of base,B 02The internal layer wall thickness of-blank,H 0The axial height of-blank,D 1The outer layer outer diameter of-compound ring,D 2—
The internal layer internal diameter of compound ring,dThe ectonexine inference diameter of-compound ring,B 1The outer layer wall thickness of-compound ring,B 2- multiple
The internal layer wall thickness of cyclization part,HThe axial height of-compound ring.
Specific embodiment
In the following with reference to the drawings and specific embodiments not to a kind of 6061 aluminium alloy of outer layer 40Cr steel internal layer of the present invention
The compound ring manufacturing method of uniform thickness is described in further detail.
As shown in Fig. 1 ~ Fig. 4, the size of the ectonexine of centrifugal casting not uniform thickness composite ring blank is set are as follows: outer layer 40Cr
The outer diameter of steelD 01=240mm, wall thicknessB 01=20mm, the internal diameter of 6061 aluminium alloy of internal layerD 02=120mm, wall thicknessB 02=40mm, ectonexine
Inference diameterd 0=200mm, axial heightH 0=50mm；The size of the ectonexine not compound ring of uniform thickness after hot rolling are as follows: outer layer
The outer diameter of 40Cr steelD 1=330mm, wall thicknessB 1=10mm, the internal diameter of 6061 aluminium alloy of internal layerD 2=270mm, wall thicknessB 2=20mm, it is inside and outside
Layer inference diameterd=310mm, axial heightH=48mm, manufacturing method comprise the following steps that:
(1) as shown in Figure 1, in centrifugal casting machine upper outer layer 40Cr steel, 1 is casting ladle in figure, and 2 be running channel, and 3 be cast gate, and 4 are
Locking pin, 5 be die cover plate, and 6 be upper sand cushion, and 6 ' be lower sand cushion, and 7 be the internal layer of blank, and 7 ' be the outer layer of blank, and 8 be cooling
Water pipe, 9 be metal die casting mold, and pouring temperature is 1560 DEG C, poring rate 270g/s, duration of pouring 15s, metal die
Casting mold preheating temperature is 190 DEG C, and casting mold revolving speed is 180r/min, is started in casting when outer layer 40Cr steel temperature is down to 580 DEG C
6061 aluminium alloy of layer, pouring temperature are 660 DEG C, poring rate 226g/s, and casting mold revolving speed is 260r/min, and the duration of pouring is
8s is shut down when the surface temperature of 6061 aluminium alloy of internal layer is down to 120 DEG C；
(2) with metal die casting mold slow cooling to room temperature, depanning obtains the size of not uniform thickness composite ring blank are as follows: outer layer 40Cr
The outer diameter of steelD 01=240mm, wall thicknessB 01=20mm, the internal diameter of 6061 aluminium alloy of internal layerD 02=120mm, wall thicknessB 02=40mm, ectonexine
Inference diameterd 0=200mm, axial heightH 0=50mm, as shown in Figure 2；
(3) two-step homogenization is handled: above-mentioned not uniform thickness composite ring blank being heated to 490 DEG C of heat preservation 3h, then proceedes to heat
To 520 DEG C of heat preservation 12h, then it is air-cooled to room temperature；
(4) the not hot rolling of uniform thickness composite ring blank: uniform thickness composite ring blank is transported immediately after above-mentioned Homogenization Treatments
To numerical control diameter axial ring rolling machine, as shown in figure 3, driven roller 10 is drive roll, core roller 14 makees radial feed movement, end face cone roller
15 without axial feed, and guide roller 11 plays guiding and feedback signal, and control rolling initial temperature is 450 DEG C, and rolling ends warm
Degree is 400 DEG C, according to outer layer 12 and internal layer 13 not uniform thickness the characteristics of, feed parameters according to 3 stage controls, the amount of feeding first is
30%, feed speed 1.8mm/s, outer layer rolling ratio are 1.25, and internal layer rolling ratio is 1.1, and the feeding time is 4s；Then it feeds
Amount is 60%, feed speed 2.6mm/s, and outer layer rolling ratio is 1.55, and internal layer rolling ratio is 1.57, and the feeding time is 6s；Finally
The amount of feeding is 10%, feed speed 0.4mm/s, and outer layer rolling ratio is 1.1, and internal layer rolling ratio is 1.2, and the feeding time is 3s, is reached
Compound ring is air-cooled to room temperature after to required size, obtains the size of the compound ring of not uniform thickness are as follows: the outer diameter of outer layer 40Cr steelD 1=330mm, wall thicknessB 1=10mm, the internal diameter of 6061 aluminium alloy of internal layerD 2=270mm, wall thicknessB 2=20mm, ectonexine inference diameterd=310mm, axial heightH=48mm, as shown in Figure 4；
(5) make annealing treatment: it is 420 DEG C that the compound ring of not uniform thickness of hot rolling forming, which is heated to temperature, 3h is kept the temperature, finally with furnace
Slow cooling is to room temperature.
Claims (1)
1. a kind of 6061 aluminium alloy of outer layer 40Cr steel internal layer not compound ring manufacturing method of uniform thickness, it is characterised in that press following technique
Step is realized:
(1) in centrifugal casting machine upper outer layer 40Cr steel, pouring temperature is 1540 ~ 1560 DEG C, and poring rate is 270 ~ 360g/
S, the duration of pouring are 15 ~ 20s, and metal die casting mold preheating temperature is 190 ~ 220 DEG C, and casting mold revolving speed is 180 ~ 200r/min, to
Outer layer 40Cr steel temperature starts to be poured 6061 aluminium alloy of internal layer when being down to 580 ~ 600 DEG C, and pouring temperature is 650 ~ 670 DEG C, casting
Speed is 226 ~ 340g/s, and casting mold revolving speed is 260 ~ 290r/min, and the duration of pouring is 8 ~ 12s, the table to 6061 aluminium alloy of internal layer
When face temperature is down to 120 ~ 150 DEG C, shut down；
(2) with metal die casting mold slow cooling to room temperature, depanning obtains the size of not uniform thickness composite ring blank are as follows: outer layer 40Cr
The outer diameter of steelD 01=240 ~ 300mm, wall thicknessB 01=20 ~ 25mm, the internal diameter of 6061 aluminium alloy of internal layerD 02=120 ~ 160mm, wall thicknessB 02=
40 ~ 45mm, ectonexine inference diameterd 0=200 ~ 250mm, axial heightH 0=50~55mm；
(3) two-step homogenization is handled: the above-mentioned not uniform thickness annular blank of drop is heated to 470 ~ 490 DEG C, keeps the temperature 3 ~ 5h, then proceedes to add
Heat keeps the temperature 8 ~ 12h to 520 ~ 540 DEG C, then air-cooled to room temperature；
(4) the not hot rolling of uniform thickness composite ring blank: uniform thickness composite ring blank is transported immediately after above-mentioned Homogenization Treatments
To numerical control diameter axial ring rolling machine, core roller makees radial feed movement, and without axial feed, control rolling initial temperature is end face cone roller
430 ~ 450 DEG C, rolling finishing temperature is 390 ~ 400 DEG C, according to outer layer and internal layer not uniform thickness the characteristics of, according to 3 stage controls
Parameter is fed, the amount of feeding first is 20 ~ 30%, and feed speed is 1.8 ~ 2.2mm/s, and outer layer rolling ratio is 1.25 ~ 1.4, and internal layer is rolled over
Expand than being 1.1 ~ 1.2, the feeding time is 4 ~ 6s；Then the amount of feeding is 50 ~ 60%, and feed speed is 2.6 ~ 3.0mm/s, and outer layer is rolled over
Expand than being 1.5 ~ 1.65, internal layer rolling ratio is 1.55 ~ 1.6, and the feeding time is 6 ~ 8s；The last amount of feeding is 5 ~ 10%, feed speed
For 0.4 ~ 0.8mm/s, outer layer rolling ratio is 1.1 ~ 1.2, and internal layer rolling ratio is 1.1 ~ 1.2, and the feeding time is 3 ~ 5s, needed for reaching
Compound ring is air-cooled to room temperature after size, obtains the size of the compound ring of not uniform thickness are as follows: the outer diameter of outer layer 40Cr steelD 1=330~
380mm, wall thicknessB 1=10 ~ 15mm, the internal diameter of 6061 aluminium alloy of internal layerD 2=270 ~ 300mm, wall thicknessB 2=20 ~ 25mm, ectonexine are handed over
Cross-sectional dimensiond=310 ~ 350mm, axial heightH=48~50mm；
(5) make annealing treatment: it is 400 ~ 420 DEG C that the compound ring of not uniform thickness of hot rolling forming, which is heated to temperature, keeps the temperature 3 ~ 5h, most
Furnace cooling is to room temperature afterwards.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617257.6A CN109530659B (en) | 2018-12-28 | 2018-12-28 | Manufacturing method of composite ring piece with 40Cr steel outer layer and 6061 aluminum alloy inner layer and different thicknesses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617257.6A CN109530659B (en) | 2018-12-28 | 2018-12-28 | Manufacturing method of composite ring piece with 40Cr steel outer layer and 6061 aluminum alloy inner layer and different thicknesses |
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| CN109530659A true CN109530659A (en) | 2019-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111804877A (en) * | 2020-07-10 | 2020-10-23 | 马鞍山市广源法兰环件有限公司 | Local connection machining forming process for large ring piece |
| CN113579645A (en) * | 2021-07-06 | 2021-11-02 | 武汉理工大学 | Forming method of large-diameter functionally-graded thin-wall circular ring part based on double-roller rotary forging |
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| CN113579645B (en) * | 2021-07-06 | 2022-10-21 | 武汉理工大学 | Forming method of large-diameter functionally-graded thin-wall circular ring part based on double-roller rotary forging |
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Application publication date: 20190329 Assignee: Guilin Qiyun New Materials Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000470 Denomination of invention: A manufacturing method of composite ring with different thickness of outer layer 40Cr steel and inner layer 6061 aluminum alloy Granted publication date: 20201110 License type: Common License Record date: 20221229 |
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Application publication date: 20190329 Assignee: GUANGZHOU GUISANJU TECHNOLOGY CO.,LTD. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000637 Denomination of invention: A manufacturing method of outer 40Cr steel inner 6061 aluminum alloy composite ring with unequal thickness Granted publication date: 20201110 License type: Common License Record date: 20221230 Application publication date: 20190329 Assignee: Nanning Richong Technology Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000635 Denomination of invention: A manufacturing method of outer 40Cr steel inner 6061 aluminum alloy composite ring with unequal thickness Granted publication date: 20201110 License type: Common License Record date: 20221230 |
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Application publication date: 20190329 Assignee: GUANGXI SHENGWEI ENERGY TECHNOLOGY Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000524 Denomination of invention: A manufacturing method of outer 40Cr steel inner 6061 aluminum alloy composite ring with unequal thickness Granted publication date: 20201110 License type: Common License Record date: 20221230 |
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