CN106825496B - A kind of wrought aluminium alloy workpiece casting forging unification moulding process - Google Patents
A kind of wrought aluminium alloy workpiece casting forging unification moulding process Download PDFInfo
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- CN106825496B CN106825496B CN201611170446.4A CN201611170446A CN106825496B CN 106825496 B CN106825496 B CN 106825496B CN 201611170446 A CN201611170446 A CN 201611170446A CN 106825496 B CN106825496 B CN 106825496B
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- aluminium alloy
- wrought aluminium
- die cavity
- alloy workpiece
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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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
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices
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Abstract
The present invention relates to Al alloy parts manufacturing technology fields, disclose a kind of wrought aluminium alloy workpiece casting forging unification moulding process, include the following steps：A, the wrought aluminium alloy of mold clamping, liquid injects die cavity；B, the wrought aluminium alloy first time natural cooling in die cavity, forcing press is logical to carry out first time extrusion forming, and workpiece crude green body is made；C, second of natural cooling of the wrought aluminium alloy in die cavity, the heating mechanism heating in mold；D, the liquid wrought aluminium alloy third time natural cooling in die cavity, forcing press carry out second of extrusion forming, wrought aluminium alloy workpiece are made；E, wrought aluminium alloy workpiece natural cooling, upper die and lower die are detached from, and take out wrought aluminium alloy workpiece.The present invention casts the complete wrought aluminium alloy workpiece for meeting mechanical property requirements that the technique of forging unification directly produces, eliminate semi-finished product link, subsequent mechanical processing link is eliminated, the manufacture efficiency of wrought aluminium alloy product is greatly improved, reduces manufacturing cost.
Description
Technical field
The present invention relates to Al alloy parts manufacturing technology field more particularly to a kind of wrought aluminium alloy workpiece casting forging unification at
Type technique.
Background technology
Aluminium alloy can be divided into cast aluminium alloy gold and wrought aluminium alloy according to processing method difference.Cast aluminium alloy gold can lead to
Casting and forming is crossed, precision workpiece does not use cast aluminium alloy gold casting and forming generally, and the content ratio of silicon becomes in cast aluminium alloy gold
The advantages of height in shape aluminium alloy, cast aluminium alloy gold is more crisp, therefore the intensity of cast aluminium alloy gold and revival are poor, cast aluminium alloy gold
It is that direct casting and forming, forming cost are low；Wrought aluminium alloy items mechanical property is superior to cast aluminium alloy gold, however deforms aluminium
Alloy needs, by hot procedures such as melting, cast, ingot, extruding, forgings, to produce wrought aluminium alloy semi-finished product, then
Finished workpart is processed by lathe, milling machine, cutting, engraving etc. again, the mechanical property of finished workpart made of wrought aluminium alloy
It can be better than the workpiece of cast aluminium alloy gold casting.Aluminium alloy also has the characteristics that light weight, therefore is usually used in field of aerospace.Example
If the seat support on aircraft is exactly to be manufactured using wrought aluminium alloy, plank is made in wrought aluminium alloy, then by cutting, carving
Seat support is made in machine engraving, and the various mechanical properties of seat support can be met the requirements.
But wrought aluminium alloy needs first to manufacture semi-finished product, finished product then is made by following process, production efficiency is than casting
Cause type much lower, subsequent machining cost is very big；If by wrought aluminium alloy directly using casting by the way of straight forming, at
Workpiece mechanical property after type is remarkably decreased, and cannot be satisfied strength demand.Therefore, the molding effect of wrought aluminium alloy how is improved
Rate, reduction processing cost are a key points and difficulties.
Invention content
The present invention provides to solve the problems, such as that wrought aluminium alloy processing efficiency in the prior art is low, high processing costs
A kind of wrought aluminium alloy workpiece casting forging unification moulding process, is directly produced by the technique and meets the complete of mechanical strength
Workpiece eliminates semi-finished product manufacture and its subsequent processing operations, greatly improves the manufacture efficiency of workpiece while reducing processing
Cost.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of wrought aluminium alloy workpiece casting forging unification moulding process, characterized in that include the following steps：A, mold clamping,
The wrought aluminium alloy of 750 DEG C or more of liquid injects die cavity；Mold includes lower die, upper mold, and mould is formed after upper mold and lower die molding
The bottom of chamber, the lower die is equipped with feed liquor runner, and die cavity adjusting slider, the outer end of die cavity adjusting slider and pressure are equipped in upper mold
Machine connects, and the junction of upper mold and lower die is equipped with several spout holes, heating mechanism and temperature sensor is equipped in mold, temperature passes
Sensor is used to detect the temperature at mould intracavity wall；B, the wrought aluminium alloy first time natural cooling in die cavity, temperature sensor inspection
Measure temperature be 480 DEG C -500 DEG C when, forcing press by die cavity adjusting slider to wrought aluminium alloy carry out first time extrusion forming,
It is made workpiece crude green body, extra wrought aluminium alloy squeezes out from spout hole in die cavity；C, second of the wrought aluminium alloy in die cavity
Natural cooling, when temperature sensor detects that temperature is 420 DEG C -440 DEG C, forcing press remains stationary as, the heating mechanism in mold
Heating, when temperature sensor detects that temperature reaches 500 DEG C -520 DEG C, heating mechanism stops heating；D, the liquid in die cavity becomes
Shape aluminium alloy third time natural cooling, when temperature sensor detects that temperature is 400 DEG C -420 DEG C, forcing press is by pushing die cavity
Adjusting slider carries out second of extrusion forming to wrought aluminium alloy, and wrought aluminium alloy workpiece is made；E, wrought aluminium alloy workpiece from
When being so cooled to 50 DEG C or less, die cavity adjusting slider resets, and upper die and lower die are detached from, and takes out wrought aluminium alloy workpiece.
After the wrought aluminium alloy injection die cavity of liquid, first time natural cooling temperature to 480 DEG C -500 DEG C, the temperature be by
The temperature of temperature at near-lying mode cavity wall, wrought aluminium alloy centre position is 530 DEG C or so, and wrought aluminium alloy is in solid-liquid mixing
State, first time extrusion forming mainly to workpiece pre-setting, while squeezing out extra raw material；It naturally cools to for the second time
At 420 DEG C -440 DEG C, the temperature at position is 470 DEG C or so among wrought aluminium alloy, is then quickly heated to mold, close to die cavity
Wrought aluminium alloy at inner wall preferentially absorbs heat heating, when temperature sensor detects that temperature is 500 DEG C -520 DEG C, wrought aluminium alloy
The temperature at intermediate position is 500 DEG C or so, then carries out third time and naturally cools to 400 DEG C -420 DEG C, the change in die cavity at this time
The temperature at each position of shape aluminium alloy tends to be uniform, then carries out second of extrusion forming；Deformation made of secondary extrusion molding
Al alloy parts interior mechanics performance is stablized, and mechanical requirements is disclosure satisfy that, and wrought aluminium alloy workpiece accuracy is high, without follow-up
Processing greatly improves manufacture efficiency, reduces manufacturing cost.
Preferably, forcing press first time extrusion forming pressure is 50-60MPa, second of extrusion forming pressure of forcing press
For 70-75MPa.Second when squeezing, and has deformed that aluminium alloy temperature is relatively low, pressure increases, to improve wrought aluminium alloy workpiece
Precision.
Preferably, in step d, post forming is made after wrought aluminium alloy workpiece, and wrought aluminium alloy workpiece is natural
When being cooled to 300 DEG C -320 DEG C, forcing press carries out third time extruding by die cavity adjusting slider to wrought aluminium alloy workpiece.Third
Before secondary extruding, the wrought aluminium alloy in die cavity be fully cured it is qualitative, pass through third time squeeze so that wrought aluminum alloy surface
Dimensional accuracy improve.
Preferably, forcing press third time squeeze pressure is 80-100MPa.
Preferably, in step a, the pre-heat treatment is carried out after mold clamping, preheating temperature is 220 DEG C -250 DEG C, preheating
Time is 30s-50s.By mold the pre-heat treatment, prevent the wrought aluminium alloy of liquid enter after die cavity quickly with mold heat exchange,
Lead to excessive temperature differentials of the wrought aluminium alloy with intermediate position at mould intracavity wall.
Preferably, the grain refiner that mass ratio is 0.3%-0.5% is added in liquid wrought aluminium alloy.Crystal grain refinement
Agent makes crystal grain refinement during wrought aluminium alloy cooled and solidified, can improve dense structure's property, improve mechanical property.
Preferably, the grain refiner is AlTi.Aluminium in AlTi and the wrought aluminium alloy of liquid reacts
TiAl3 particles are formed, TiAl3 particles are distributed under the convection action of alloy solution in entire alloy solution, aobvious to play
The Grain refinement of work.
Preferably, being equipped with supersonic generator on the outside of mold, entire mold is placed in ultrasonic wave.Ultrasonic wave is deformation aluminium
Alloy solution provides energy so that the grain movement in wrought aluminium alloy is more violent, and crystal grain distribution is more uniform, after molding
Mechanical property, the mechanical performance of wrought aluminium alloy workpiece are more stablized.
Therefore, the present invention casts the complete wrought aluminium alloy workpiece that directly produces of technique of forging unification, eliminate half at
Product link eliminates subsequent mechanical processing link, greatly improves the manufacture efficiency of wrought aluminium alloy product, reduces manufacture
Cost reaches the wrought aluminium alloy workpiece of traditional handicraft manufacture by the mechanical property of wrought aluminium alloy workpiece made from this technique
Performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of mold in the present invention.
In figure：Lower die 1, upper mold 2, die cavity 3, feed liquor runner 4, die cavity adjusting slider 5, forcing press 6, spout hole 7, heater
Structure 8, temperature sensor 9.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and detailed description：
Embodiment 1：A kind of wrought aluminium alloy workpiece casting forging unification moulding process, includes the following steps：
A, mold clamping carries out the pre-heat treatment after mold clamping, and preheating temperature is 220 DEG C -250 DEG C, and preheating time is
The wrought aluminium alloy of 30s-50s, 750 DEG C or more of liquid inject die cavity；As shown in Figure 1, mold includes lower die 1, upper mold 2, on
Die cavity 3 is formed after mould and lower die molding, the bottom of lower die is equipped with feed liquor runner 4, die cavity adjusting slider 5, die cavity are equipped in upper mold
The outer end of adjusting slider is connect with forcing press 6, and the junction of upper mold and lower die is equipped with several spout holes 7, and heating is equipped in mold
Mechanism 8 and temperature sensor 9, temperature sensor are used to detect the temperature at mould intracavity wall；
B, the wrought aluminium alloy first time natural cooling in die cavity, temperature sensor detect that temperature is 480 DEG C -500 DEG C
When, the temperature of the wrought aluminium alloy in die cavity centre is 530 DEG C or so at this time, and forcing press is by die cavity adjusting slider to deformation
Aluminium alloy carries out first time extrusion forming, and workpiece crude green body is made, and forcing press first time extrusion forming pressure is 50-60MPa, die cavity
Interior extra wrought aluminium alloy squeezes out from spout hole；C, second of natural cooling of the wrought aluminium alloy in die cavity, temperature sensing
When device detects that temperature is 420 DEG C -440 DEG C, the temperature of the wrought aluminium alloy in die cavity centre is 470 DEG C or so at this time, pressure
Power machine remains stationary as, the heating mechanism heating in mold, when temperature sensor detects that temperature reaches 500 DEG C -520 DEG C, heating
Mechanism stops heating, and the temperature of the wrought aluminium alloy in die cavity centre is 500 DEG C or so at this time；D, the liquid deformation in die cavity
Aluminium alloy third time natural cooling, when temperature sensor detects that temperature is 400 DEG C -420 DEG C, the change in die cavity centre at this time
The temperature of shape aluminium alloy is 410 DEG C or so, and the temperature at each position of wrought aluminium alloy of intracavitary tends to be uniform, and forcing press is by pushing away
Dynamic model chamber adjusting slider carries out second of extrusion forming to wrought aluminium alloy, and wrought aluminium alloy workpiece, second of forcing press is made
Extrusion forming pressure is 70-75MPa；Post forming is made after wrought aluminium alloy workpiece, wrought aluminium alloy workpiece natural cooling
When to 300 DEG C -320 DEG C, forcing press carries out third time extruding, forcing press the by die cavity adjusting slider to wrought aluminium alloy workpiece
Squeeze pressure is 80-100MPa three times；E, when wrought aluminium alloy workpiece naturally cools to 50 DEG C or less, die cavity adjusting slider is multiple
Position, upper die and lower die are detached from, and take out wrought aluminium alloy workpiece.
Embodiment 2：The crystal grain refinement that mass ratio is 0.3%-0.5% is added in liquid wrought aluminium alloy in melting furnace
Agent, grain refiner AlTi, and supersonic generator is set on the outside of mold, entire mold is placed in ultrasonic wave；It will contain
The liquid wrought aluminium alloy of grain refiner injects die cavity, remaining step is same as Example 1.
The present invention casts the complete wrought aluminium alloy workpiece that the technique of forging unification directly produces, and eliminates semi-finished product ring
Section, eliminates subsequent mechanical processing link, greatly improves the manufacture efficiency of wrought aluminium alloy product, reduce and be manufactured into
This, the wrought aluminium alloy workpiece of traditional handicraft manufacture is reached by the mechanical property of wrought aluminium alloy workpiece made from this technique
Performance.
Claims (8)
1. a kind of wrought aluminium alloy workpiece casting forging unification moulding process, characterized in that include the following steps：
A, the wrought aluminium alloy of mold clamping, 750 DEG C or more of liquid injects die cavity；Mold includes lower die, upper mold, and upper mold is under
Die cavity is formed after mould molding, the bottom of the lower die is equipped with feed liquor runner, die cavity adjusting slider is equipped in upper mold, and die cavity, which is adjusted, to be slided
The outer end of block is connect with forcing press, and the junction of upper mold and lower die is equipped with several spout holes, and heating mechanism and temperature are equipped in mold
Sensor is spent, temperature sensor is used to detect the temperature at mould intracavity wall；
B, the wrought aluminium alloy first time natural cooling in die cavity, when temperature sensor detects that temperature is 480 DEG C -500 DEG C, pressure
Power machine carries out first time extrusion forming by die cavity adjusting slider to wrought aluminium alloy, is made workpiece crude green body, extra in die cavity
Wrought aluminium alloy squeezes out from spout hole；
C, second of natural cooling of the wrought aluminium alloy in die cavity, when temperature sensor detects that temperature is 420 DEG C -440 DEG C, pressure
Power machine remains stationary as, the heating mechanism heating in mold, when temperature sensor detects that temperature reaches 500 DEG C -520 DEG C, heating
Mechanism stops heating；
D, the liquid wrought aluminium alloy third time natural cooling in die cavity, temperature sensor detect that temperature is 400 DEG C -420 DEG C
When, wrought aluminium alloy work is made by pushing die cavity adjusting slider to carry out second of extrusion forming to wrought aluminium alloy in forcing press
Part；
E, when wrought aluminium alloy workpiece naturally cools to 50 DEG C or less, die cavity adjusting slider resets, and upper die and lower die are detached from, and takes out
Wrought aluminium alloy workpiece.
2. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 1, characterized in that forcing press the
Extrusion forming pressure is 50-60MPa, and second of extrusion forming pressure of forcing press is 70-75MPa.
3. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 1 or 2, characterized in that in step
In rapid d, post forming is made after wrought aluminium alloy workpiece, when wrought aluminium alloy workpiece naturally cools to 300 DEG C -320 DEG C, pressure
Power machine carries out third time extruding by die cavity adjusting slider to wrought aluminium alloy workpiece.
4. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 3, characterized in that forcing press the
Squeeze pressure is 80-100MPa three times.
5. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 1, characterized in that in step a
In, the pre-heat treatment is carried out after mold clamping, preheating temperature is 220 DEG C -250 DEG C, preheating time 30s-50s.
6. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 1, characterized in that liquid deforms
The grain refiner that mass ratio is 0.3%-0.5% is added in aluminium alloy.
7. a kind of wrought aluminium alloy workpiece casting forging unification moulding process according to claim 6, characterized in that the crystalline substance
Grain fining agent is AlTi.
8. a kind of wrought aluminium alloy workpiece casting forging unification moulding process described according to claim 6 or 7, characterized in that mold
Outside is equipped with supersonic generator, and entire mold is placed in ultrasonic wave.
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| US20190062871A1 (en) * | 2017-08-25 | 2019-02-28 | The Boeing Company | Tailoring high strength aluminum alloys for additive manufacturing through the use of grain refiners |
| CN107866541A (en) * | 2017-11-22 | 2018-04-03 | 昆山篙陵兴金属制品有限公司 | A kind of metal shock-proof dynamic pressure casting device |
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| CN111014579B (en) * | 2019-12-31 | 2022-01-04 | 浙江嘉兴南湖电子器材集团有限公司 | Magnetic steel blank forming device |
| CN111715863A (en) * | 2020-07-01 | 2020-09-29 | 深圳市北工实业有限公司 | Extrusion casting and micro-forging integrated forming method and die casting system |
| CN116020983B (en) * | 2022-12-08 | 2023-08-18 | 中国原子能科学研究院 | Solidification characteristic simulation device for neutron residual stress spectrometer |
| CN117161351B (en) * | 2023-09-08 | 2024-03-01 | 常州市凯宏铝业有限公司 | Extrusion molding process of liquid forging deformed aluminum alloy |
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| JPS61137663A (en) * | 1984-12-11 | 1986-06-25 | Mitsubishi Heavy Ind Ltd | Manufacture of flashless parts |
| JP2000054047A (en) * | 1998-07-30 | 2000-02-22 | Nippon Light Metal Co Ltd | HYPO-EUTECTIC ALUMINUM-SILICON ALLOY IN WHICH PRIMARY CRYSTAL Si IS CRYSTALLIZED OUT AND PRODUCTION THEREOF |
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Denomination of invention: A Forming Process of Casting Forging Integration for Deformed Aluminum Alloy Workpieces Effective date of registration: 20230904 Granted publication date: 20180803 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Jinhua Lanxi Sub branch Pledgor: ZHEJIANG TIANYA JIANGTAO POWER Co.,Ltd. Registration number: Y2023980055073 |
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