CN109648036A - A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge - Google Patents
A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge Download PDFInfo
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- CN109648036A CN109648036A CN201811617481.5A CN201811617481A CN109648036A CN 109648036 A CN109648036 A CN 109648036A CN 201811617481 A CN201811617481 A CN 201811617481A CN 109648036 A CN109648036 A CN 109648036A
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- Prior art keywords
- temperature
- forging
- shell
- hard disk
- pushing speed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/26—Making machine elements housings or supporting parts, e.g. axle housings, engine mountings
Abstract
A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge, belongs to box part forging and molding technical field, it is characterised in that comprise the following steps that: 1) casting the prefabricated slab of 6082 aluminium alloys using vertical centrifugal casting mode；2) two-step homogenization；3) hot blocking: blank initial temperature is 450 ~ 470 DEG C, and mold preheating temperature is 380 ~ 400 DEG C, and pressure is 14 ~ 16MN under press machine, and pushing speed is 3.5 ~ 4mm/s；4) hot finish-forging: forging temperature is 440 ~ 460 DEG C, and mold preheating temperature is 360-380 DEG C, and lower pressure is 17 ~ 19MN, and pushing speed is 1.5 ~ 2.5mm/s；5) intermediate solid solution；6) cold closed-die forging: lower pressure is 12 ~ 14MN, and pushing speed is 1 ~ 2mm/s；7) two-stage time effect.The invention has the advantages that saving material, hard disk shell wall thickness forming limit is big, and outer dimension precision is high, and thermal diffusivity is good.
Description
Technical field
The invention belongs to box part forging and molding technical fields, and in particular to the aluminium alloy thin-walled hard disk shell essence of one kind 6082
The manufacturing process of forging.
Background technique
The aluminium alloy thin-walled hard disk shell of lightweight (surrounding wall thickness is 2.5 ~ 5.5mm, shell bottom with a thickness of 3 ~ 5mm) is large-scale platform
The critical component of formula working host, Portable movable hard disk, the hard-disk capacity of mainstream is in 6TB hereinafter, revolving speed is 5400 ~ 7200
Rev/min, Shell Manufacture is mainly machine cut processing at present, low pressure casting shapes, 1 fire time Isothermal Hot is swaged into shape, 1 fire
Hot+1 fire time Isothermal Hot forging of blocking, 4 ~ 6 fire time hot forging formings, the disadvantage is that material and energy waste are serious, production efficiency is low, if
Standby tonnage demand is high, and the surrounding wall diickness limit is small, there is buckling phenomena after hot forging in the height direction, and thin-wall regions size is returned
The problems such as bullet seriously leads to the reduction of outer dimension precision, and serious there are shell fever under the conditions of operating when big storage, long,
Seriously reduce its military service performance and used life.When hard disc storage capacity reaches 10TB, revolving speed reaches 30,000 revs/min or more, need
To fill inert protective gas thin-wall case is intracavitary, have both lightweight, high-strength, high thermal conductivity heat dissipation, high-air-tightness property
It is required that the lightweight manufacture to its shell also proposed requirements at the higher level therewith, existing technology is unable to satisfy the height of the shells
The manufacture of performance Accurate Shaping.
Summary of the invention
The purpose of the present invention is to provide a kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forges, can be effective
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 Fig. 1 ~ 3, the prefabricated slab of 6082 aluminium alloys is cast using vertical centrifugal casting mode, pouring temperature is 660 ~
680 DEG C, metal die casting mold revolving speed is 180 ~ 220r/min, and poring rate is 10 ~ 15kg/s, and pouring slot distance die cap height is 20
~ 30cm, obtained centrifugal casting prefabricated slab is having a size of lengthL 0=80 ~ 120mm, widthW 0=30 ~ 60mm, heightH 0=10~
15mm, surrounding wall thicknessB 0=5.0 ~ 8.5mm, groove are deeph 0=3 ~ 5mm, circular groove radiusR 0=12~30mm；
(2) two-step homogenization: homogenization heating temperature is 480 ~ 490 DEG C for the first time, keeps the temperature 6 ~ 10h, second of homogenization is straight
It connects and is heated to 520 ~ 540 DEG C, keep the temperature 12 ~ 18h；
(3) hot blocking: with shell baseplane forming based on, blank initial temperature be 450 ~ 470 DEG C, mold preheating temperature be 380 ~
400 DEG C, pressure is 14 ~ 16MN under press machine, and pushing speed is 3.5 ~ 4mm/s；
(4) hot finish-forging: forging initial temperature is 440 ~ 460 DEG C, and mold preheating temperature is 360 ~ 380 DEG C, and pressure is under press machine
17 ~ 19MN, pushing speed are 1.5 ~ 2.5mm/s；
(5) intermediate solid solution: heating temperature is 530 ~ 550 DEG C, and soaking time is 4 ~ 6h, then water cooling is to room temperature；
(6) cold closed-die forging: based on the fine tuning of surrounding wall thickness short transverse size, and guarantee the depth of parallelism of shell baseplane, under press machine
Pressure is 12 ~ 14MN, and pushing speed is 1 ~ 2mm/s, obtains cold closed-die forging Shell Forging Parts size are as follows: lengthL=100 ~ 150mm, widthW=50 ~ 80mm, heightH=20 ~ 30mm, shell base thickness degreeh=3 ~ 5mm, surrounding wall thicknessB=2.5 ~ 5.5mm, circular groove radiusR=18~
40mm, as shown in Fig. 4 ~ 5；
(7) two-stage time effect is handled: first time aging temp is 140 ~ 150 DEG C, keeps the temperature 4 ~ 6h, second aging temp be 190 ~
200 DEG C, 8 ~ 12h is kept the temperature, room temperature is finally air-cooled to.
The invention has the advantages and beneficial effects that: material can be substantially saved, the forming limit of shell surrounding wall thickness is big, shell
External shape dimensional accuracy is high.Inert protective gas is filled to meet hard disc storage capacity and reach 10TB, revolving speed thin-wall case is intracavitary
When reaching 30,000 revs/min or more, lightweight, high-strength, the high property advantage for leading heat dissipation, high-air-tightness are had both.
Detailed description of the invention
Fig. 1 is vertical centrifugal casting schematic diagram；
Fig. 2 is the top view of the prefabricated slab of 6082 aluminium alloy of vertical centrifugal casting；
Fig. 3 is A-A cross-sectional view in Fig. 2；
Fig. 4 is the top view of 6082 Al-alloy casings after cold closed-die forging；
Fig. 5 is B-B cross-sectional view in Fig. 4；
In figure: the upper sand cushion of 1-5-die cover plate of casting ladle 2-running channel, 3-cast gate, 4-locking pin 6-6 '-lower sand cushion
7-metal die casting mold 8-prefabricated board, 9-cooling water pipes of billet cast piece；
L 0The length of-slab,W 0The width of-slab,H 0The height of-slab,B 0The surrounding wall thickness of-slab,h 0- slab
Depth of groove,R 0The circular groove radius of-slab,LThe length of-Shell Forging Parts,WThe width of-Shell Forging Parts,H- Shell Forging Parts
Highly,BThe surrounding wall thickness of-Shell Forging Parts,hThe bottom thickness of-Shell Forging Parts,RThe circular groove radius of-Shell Forging Parts.
Specific embodiment
The present invention is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 4 and Fig. 5 show the top view and B-B cross-sectional view of 6082 Al-alloy casings after cold closed-die forging, i.e., and of the invention one
6082 aluminium alloy thin-walled hard disk shells of kind, set its size are as follows: lengthL=100mm, widthW=50mm, heightH=20mm, shell bottom
Thicknessh=3mm, surrounding wall thicknessB=2.5mm, circular groove radiusR=22mm；The processing step of its precision forging is:
(1) the prefabricated slab of 6082 aluminium alloys is cast using vertical centrifugal casting mode, Fig. 1 show vertical centrifugal casting signal
Scheme, 1 is casting ladle in figure, and 2 be running channel, and 3 be cast gate, and 4 be locking pin, and 5 be die cover plate, and 6 be upper sand cushion, and 6 ' be lower sand cushion, and 7 are
Metal die casting mold, 8 be prefabricated board billet cast piece, and 9 be cooling water pipe, and pouring temperature is 670 DEG C, and metal die casting mold revolving speed is
220r/min, poring rate 15kg/s, pouring slot distance die cap height is 30cm, the prefabricated size of plate blank of obtained centrifugal casting
Are as follows: lengthL 0=120mm, widthW 0=60mm, heightH 0=15mm, surrounding wall thicknessB 0=8.5mm, groove are deeph 0=5mm, circular groove radiusR 0=30mm, as shown in Fig. 2 ~ 3；
(2) two-step homogenization: homogenization heating temperature is 480 DEG C for the first time, keeps the temperature 6h, second homogenization be directly heat to
520 DEG C, keep the temperature 12h；
(3) hot blocking: based on the forming of shell baseplane, blank initial temperature is 450 DEG C, and mold preheating temperature is 400 DEG C, pressure
Pressure is 14MN under machine, and pushing speed is 3.5mm/s；
(4) hot finish-forging: based on the forming of box part surrounding wall thickness short transverse, forging initial temperature is 440 DEG C, mold preheating temperature
Degree is 380 DEG C, and pressure is 17MN under press machine, and pushing speed is 2.5mm/s；
(5) intermediate solid solution: heating temperature is 540 DEG C, soaking time 4h, then water cooling is to room temperature；
(6) cold closed-die forging: based on the fine tuning of surrounding wall thickness short transverse size, and guarantee the depth of parallelism of shell baseplane, under press machine
Pressure is 12MN, and pushing speed is 1mm/s, obtains cold closed-die forging Shell Forging Parts size are as follows: lengthL=100mm, widthW=50mm, height
DegreeH=20mm, shell base thickness degreeh=3mm, surrounding wall thicknessB=2.5mm, circular groove radiusR=22mm, as shown in Fig. 4 ~ 5；
(7) two-stage time effect is handled: first time aging temp is 150 DEG C, keeps the temperature 4h, and second of aging temp is 190 DEG C, heat preservation
8h is finally air-cooled to room temperature.
Claims (1)
1. a kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forges, it is characterised in that realize in following processing steps:
(1) use vertical centrifugal casting mode to cast the prefabricated slab of 6082 aluminium alloys: pouring temperature is 660 ~ 680 DEG C, metal mold
Tool casting mold revolving speed is 180 ~ 220r/min, and poring rate is 10 ~ 15kg/s, and pouring slot distance die cap height is 20 ~ 30cm, is obtained
Centrifugal casting prefabricated slab is having a size of lengthL 0=80 ~ 120mm, widthW 0=30 ~ 60mm, heightH 0=10 ~ 15mm, surrounding wall thicknessB 0=5.0 ~ 8.5mm, groove are deeph 0=3 ~ 5mm, circular groove radiusR 0=12~30mm；
(2) two-step homogenization: homogenization heating temperature is 480 ~ 490 DEG C for the first time, keeps the temperature 6 ~ 10h, second of homogenization is straight
It connects and is heated to 520 ~ 540 DEG C, keep the temperature 12 ~ 18h；
(3) hot blocking: with shell baseplane forming based on, blank initial temperature be 450 ~ 470 DEG C, mold preheating temperature be 380 ~
400 DEG C, pressure is 14 ~ 16MN under press machine, and pushing speed is 3.5 ~ 4mm/s；
(4) hot finish-forging: forging initial temperature is 440 ~ 460 DEG C, and mold preheating temperature is 360 ~ 380 DEG C, and pressure is under press machine
17 ~ 19MN, pushing speed are 1.5 ~ 2.5mm/s；
(5) intermediate solid solution: heating temperature is 530 ~ 550 DEG C, and soaking time is 4 ~ 6h, then water cooling is to room temperature；
(6) cold closed-die forging: based on the fine tuning of surrounding wall thickness short transverse size, and guarantee the depth of parallelism of shell baseplane, under press machine
Pressure is 12 ~ 14MN, and pushing speed is 1 ~ 2mm/s, obtains cold closed-die forging Shell Forging Parts size are as follows: lengthL=100 ~ 150mm, widthW=50 ~ 80mm, heightH=20 ~ 30mm, shell base thickness degreeh=3 ~ 5mm, surrounding wall thicknessB=2.5 ~ 5.5mm, circular groove radiusR=18~
40mm；
(7) two-stage time effect is handled: first time aging temp is 140 ~ 150 DEG C, keeps the temperature 4 ~ 6h, second aging temp be 190 ~
200 DEG C, 8 ~ 12h is kept the temperature, room temperature is finally air-cooled to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617481.5A CN109648036A (en) | 2018-12-28 | 2018-12-28 | A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617481.5A CN109648036A (en) | 2018-12-28 | 2018-12-28 | A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge |
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| CN109648036A true CN109648036A (en) | 2019-04-19 |
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| CN201811617481.5A Withdrawn CN109648036A (en) | 2018-12-28 | 2018-12-28 | A kind of manufacturing process of 6082 aluminium alloy thin-walled hard disk shell finish forge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695278A (en) * | 2019-11-28 | 2020-01-17 | 西南铝业（集团）有限责任公司 | Method for manufacturing prepressing part of 2014 aluminum alloy aviation precision hub die forging |
| CN110695301A (en) * | 2019-11-28 | 2020-01-17 | 西南铝业（集团）有限责任公司 | Method for manufacturing final pressing piece of 2014 aluminum alloy aviation precision hub die forging |
| CN113828722A (en) * | 2021-09-05 | 2021-12-24 | 桂林理工大学 | Design method of hard disk box body extrusion die |
| CN113828715A (en) * | 2021-08-24 | 2021-12-24 | 桂林理工大学 | Corner extrusion forming method for scandium-containing high-zinc aluminum alloy hard disk box body rectangular channel |
| CN113857401A (en) * | 2021-09-05 | 2021-12-31 | 桂林理工大学 | Isothermal extrusion process for Al-Zn-Mg-Sc alloy hard disk box body |
| CN115505802A (en) * | 2022-09-26 | 2022-12-23 | 上海鑫益瑞杰有色合金有限公司 | High-strength and high-brightness Al-Mg-Si aluminum alloy and preparation method thereof |
-
2018
- 2018-12-28 CN CN201811617481.5A patent/CN109648036A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695278A (en) * | 2019-11-28 | 2020-01-17 | 西南铝业（集团）有限责任公司 | Method for manufacturing prepressing part of 2014 aluminum alloy aviation precision hub die forging |
| CN110695301A (en) * | 2019-11-28 | 2020-01-17 | 西南铝业（集团）有限责任公司 | Method for manufacturing final pressing piece of 2014 aluminum alloy aviation precision hub die forging |
| CN110695301B (en) * | 2019-11-28 | 2021-08-20 | 西南铝业（集团）有限责任公司 | Method for manufacturing final pressing piece of 2014 aluminum alloy aviation precision hub die forging |
| CN113828715A (en) * | 2021-08-24 | 2021-12-24 | 桂林理工大学 | Corner extrusion forming method for scandium-containing high-zinc aluminum alloy hard disk box body rectangular channel |
| CN113828715B (en) * | 2021-08-24 | 2023-05-05 | 桂林理工大学 | Rectangular channel corner extrusion forming method for scandium-containing high-zinc aluminum alloy hard disk box body |
| CN113828722A (en) * | 2021-09-05 | 2021-12-24 | 桂林理工大学 | Design method of hard disk box body extrusion die |
| CN113857401A (en) * | 2021-09-05 | 2021-12-31 | 桂林理工大学 | Isothermal extrusion process for Al-Zn-Mg-Sc alloy hard disk box body |
| CN113857401B (en) * | 2021-09-05 | 2023-05-05 | 桂林理工大学 | Isothermal extrusion process for Al-Zn-Mg-Sc alloy hard disk cartridge body |
| CN113828722B (en) * | 2021-09-05 | 2023-05-30 | 桂林理工大学 | Design method of hard disk box extrusion die |
| CN115505802A (en) * | 2022-09-26 | 2022-12-23 | 上海鑫益瑞杰有色合金有限公司 | High-strength and high-brightness Al-Mg-Si aluminum alloy and preparation method thereof |
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Application publication date: 20190419 |