CN109048221A - A kind of forming method of complex-curved foam aluminum component - Google Patents
A kind of forming method of complex-curved foam aluminum component Download PDFInfo
- Publication number
- CN109048221A CN109048221A CN201811014704.9A CN201811014704A CN109048221A CN 109048221 A CN109048221 A CN 109048221A CN 201811014704 A CN201811014704 A CN 201811014704A CN 109048221 A CN109048221 A CN 109048221A
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- China
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- complex
- precast body
- foamed aluminium
- heating
- foam aluminum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a kind of forming methods of complex-curved foam aluminum component, comprising: S1, provides a stamping die, stamping die includes punch-pin and cavity plate and heating component；S2, two pieces of sheet metals stacked are provided, is uniformly distributed foaming agent and stabilizer between two pieces of sheet metals, multi-pass soldering is carried out to the two pieces of metal plates stacked using agitating friction weldering, obtains foamed aluminium precast body；S3, a heating mechanism is provided or the foamed aluminium precast body in S2 is heated and kept the temperature using the heating component of stamping die；S4, the foamed aluminium precast body after heating is transferred to stamping die, die closing, foamed aluminium precast body is subjected to punch forming, die sinking, mobile punch-pin makes it apart from cavity plate certain distance, starting heating component heats foamed aluminium precast body, so that it is completed remaining foaming movement, obtains complex-curved foam aluminum component.The present invention can not only mold any desired curved surface forming part, but also the whole flow process duration is short, at low cost.
Description
Technical field
Present invention relates particularly to a kind of forming methods of complex-curved foam aluminum component, it connects agitating friction weldering as solid phase
It fetches and prepares complex-curved foam aluminum component.
Background technique
As nowadays automotive light weight technology development is more and more wide, foamed aluminium is increasingly becoming great uniqueness in various lightweighting materials
One kind of own advantages.The unique cell structure that foamed aluminium does not have because having other lightweighting materials, and there is relative density
Plurality of advantages small, specific strength is big, mechanics is corresponding excellent and energy regenerating ability is good, so as to be used in everywhere in vehicle
It is subject to the position being impacted.
Simple foam aluminium sandwich plate is not able to satisfy the requirement of routine vehicle, it is necessary to by forming technique come
To the various complex-curved plates met the requirements.The method for preparing complex-curved plate at present is not very much, is essentially all to make
Desirable articles are obtained with traditional punch forming production line, but there is inside by the different plates that conventional ones are processed
Abscess difference and mechanics parameter difference, to generate uncontrollable various mechanical deficiencies.
Summary of the invention
The purpose of the present invention is to provide a kind of forming methods of complex-curved foam aluminum component, it is welded using agitating friction
Standby complex-curved foam aluminum component, can not only mold any desired curved surface forming part, but also the whole flow process duration is short,
Consume that equipment is simple, and consumption of raw material is less, integrated operation is easy, and is remarkably improved the efficiency for producing complex-curved part and effective
Reduce cost.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of forming method of complex-curved foam aluminum component, comprising the following steps:
S1, a stamping die is provided, the stamping die includes the punch-pin being oppositely arranged and cavity plate and heating component；
S2, two pieces of sheet metals stacked are provided, the mixing of foaming agent and stabilizer is uniformly distributed between two pieces of sheet metals
Powder carries out multi-pass soldering to the two pieces of metal plates stacked using agitating friction weldering, obtains foamed aluminium precast body；
S3, a heating mechanism is provided or the foamed aluminium precast body in S2 is heated simultaneously using the heating component of stamping die
Heat preservation；
S4, the foamed aluminium precast body after heating in S3 is transferred to stamping die, die closing strikes out foamed aluminium precast body
Type, die sinking, mobile punch-pin make it apart from cavity plate certain distance, start heating component and heat to foamed aluminium precast body, make it
Remaining foaming movement is completed, complex-curved foam aluminum component is obtained.
Preferably, the heating mechanism is heating furnace.
It preferably, further include step S5, after the completion of the foaming of heat froth aluminium precast body, heating component is to complex-curved bubble
Foam aluminum component continues to heat and keep the temperature, and heat preservation to stamping die leads to cooling water after terminating, and to carry out pressure maintaining to complex-curved foam aluminum component fixed
Type guarantees that the abscess of the complex-curved foam aluminum component of gained is close.
Preferably, the holding temperature of heating component is 600~800 DEG C in step S5, and soaking time is 10~20min.
Preferably, heating temperature is 450~550 DEG C in step S3, and soaking time is 1~15min.
Preferably, it is heated in step S3 according to heating mechanism, then rapidly by the bubble after heating after the completion of heat preservation
Foam aluminium precast body is transferred in stamping die, and transfer time is no more than 10 seconds.
Preferably, the distance between itself and cavity plate are 5~10mm after mobile punch-pin in step S4, so that foamed aluminium precast body
Have enough foaming spaces.
The beneficial effect comprise that: the present invention is logical in conjunction with micro foaming powder using two blocks of solid metal plates
It crosses agitating friction weldering and is prepared into foamed aluminium precast body, the foam powder amount added in this way is not only fewer than prior powder metallurgy method very much,
And higher plasticity can be realized in subsequent heat, the precast body of prior powder metallurgy method preparation does not have plasticity, can not
For Plastic Forming；
Foamed aluminium precast body heat-molding-again to foam, foamed aluminium precast body is placed in stamping die and carries out by the present invention
Heat it is stamping, then carry out foam-in-mould quenching, first heating to foam again can be such that plate integrally has preferably in high temperature state
Thermoplasticity can not only shape complex-curved component to determine the high formability of finished product, realize complex-curved foam gold
The integrated molding of metal elements, solve the problems, such as conventional foam metal can not Plastic Forming be it is complex-curved, while in mold
Heat-insulation pressure keeping foams, and available porosity is good, distribution of cells is suitable for, the complex-curved component of non-foam tissue defects, precision efficiency
Height, it is at low cost, it is suitable for batch production.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the schematic diagram for being stirred friction welding (FW) in the embodiment of the present invention to metal plate；
Fig. 2 is the structural schematic diagram of stamping die in the embodiment of the present invention.
In figure: 1- sheet metal, 2- foamed aluminium precast body, 3- punch-pin, 5- are heated precast body, the top 4- water channel, the lower part 6-
Water channel, 7- cavity plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1 and Figure 2, a kind of forming method of complex-curved foam aluminum component, comprising the following steps:
S1, a stamping die is provided, the stamping die includes the punch-pin 3 being oppositely arranged and cavity plate 7 and heating component；
S2, two pieces of sheet metals 1 stacked are provided, the mixed of foaming agent and stabilizer is uniformly distributed between two pieces of sheet metals 1
Powder is closed, multi-pass soldering is carried out to the two pieces of metal plates stacked using agitating friction weldering, obtains foamed aluminium precast body 2；
S3, a heating mechanism is provided or the foamed aluminium precast body in S2 is heated simultaneously using the heating component of stamping die
Heat preservation；
S4, the foamed aluminium precast body after heating in S3 is transferred to stamping die, die closing strikes out foamed aluminium precast body
Type is to ideal form, the die sinking rapidly again after the rapid die closing of mold, and mobile punch-pin makes it apart from cavity plate certain distance, starting heating
Component heats foamed aluminium precast body, so that it is completed remaining foaming movement, obtains complex-curved foam aluminum component.
Preferably, heating mechanism is heating furnace, is arranged outside stamping die.It is prefabricated to foamed aluminium according to heating mechanism
Body is heated, then the foamed aluminium precast body after heating is transferred in stamping die rapidly after the completion of heat preservation and carries out locating clip
Tightly, transfer time is no more than 10 seconds.If precast body heats in stamping die, need to continue to carry out subsequent operation i.e. in mold
It can.
Preferably, the invention also includes step S5, and after the completion of the foaming of heat froth aluminium precast body, heating component is to complexity
Curved surface foam aluminum component continues to heat and keep the temperature, and heat preservation is led to cooling water to stamping die after terminating and carried out to complex-curved foam aluminum component
Pressure maintaining sizing, to stop unstable heat transfer, the pressure maintaining of the piece stage for making punching press last is more stable, it is ensured that primary
It is in-molded, guarantee that the abscess of the complex-curved foam aluminum component of gained is close, and foam-in-mould is formed and cooling pressure maintaining one
Change may insure that whole flow process precision is good, it is high-efficient with it is at low cost.Wherein, the holding temperature of heating component is 600 in the step
~800 DEG C, soaking time is 10~20min.The top water channel 4 and lower part water channel 6 for leading to cooling water are equipped in stamping die.
Preferably, heating temperature is 450~550 DEG C in step S3, and soaking time is 1~15min.
Preferably, the distance between itself and cavity plate are 5~10mm after mobile punch-pin in step S4, so that foamed aluminium precast body
Have enough foaming spaces.
Embodiment one
S1, agitating friction weld the stage: carrying out mixing yoghurt on agitating friction welding work table using sheet metal 1 and steeped
Foam aluminium precast body 2；
Preparation stage before S2, punching press: the foamed aluminium precast body prepared in S1 is put in heating furnace and be heated to 500 DEG C simultaneously
10min is kept the temperature, heating terminates that heated precast body is transferred quickly to carry out in punch-pin 3 and cavity plate 7 positioning clamping, shifts time-consuming protect
It holds in 10s or so；
S3, punching press modification stage: the punch-pin 3 and cavity plate 7 of rapid closing mold carry out punching press precast body to ideal form；
S4, foaming stages: punch-pin 5mm is moved up after mold molds rapidly progress punching press to give the heated foaming of precast body 5 space, come
The precast body of modification is allowed to complete remaining foaming operation；
S5, holding stage: continue to heat the remaining foaming movement for completing the precast body of modification in mold to mold, be heated to
Certain temperature simultaneously keeps the temperature a period of time, and holding temperature is 660 DEG C, soaking time 15min；
S6, cooling and shaping stage: in S5 after thermal insulation foaming, to prevent foam element from occurring in similar conventional method in air
Direct-cooled occurred abscess defect and mechanical property problem carry out cooling in mold to foam element, and two water channels are logical in mold
Cooling water comes to pressure maintaining of the piece cooling, and to stop unstable heat transfer, the pressure maintaining of the piece stage for making punching press last is more
Add stabilization, it is ensured that it is primary in-molded, so that Foamed article abscess is close.
Finally obtained foamed aluminium finished product porosity is about 50% or so in embodiment one.
Embodiment two
Specific method is as in the first embodiment, different process conditions are as follows: is directly to set foamed aluminium precast body just when this foaming heating
It in being heated in mold, eliminates and precast body is transferred to the time wasted in mold process from heating furnace, subsequent holding temperature is protected
Press the time.
Finally obtained foamed aluminium finished product porosity is about 70% or so in embodiment two.
The present invention can not only mold the molded part of almost arbitrarily desired curved surface, but also the whole flow process duration is not
Long, consumption equipment is simple, and integrated operation is easy, and can greatly improve the efficiency for producing complex-curved part and effectively reduce cost.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. a kind of forming method of complex-curved foam aluminum component, which comprises the following steps:
S1, a stamping die is provided, the stamping die includes the punch-pin being oppositely arranged and cavity plate and heating component；
S2, two pieces of sheet metals stacked are provided, the mixing of foaming agent and stabilizer is uniformly distributed between two pieces of sheet metals
Powder carries out multi-pass soldering to the two pieces of metal plates stacked using agitating friction weldering, obtains foamed aluminium precast body；
S3, a heating mechanism is provided or the foamed aluminium precast body in S2 is heated simultaneously using the heating component of stamping die
Heat preservation；
S4, the foamed aluminium precast body after heating in S3 is transferred to stamping die, die closing strikes out foamed aluminium precast body
Type, die sinking, mobile punch-pin make it apart from cavity plate certain distance, start heating component and heat to foamed aluminium precast body, make it
Remaining foaming movement is completed, complex-curved foam aluminum component is obtained.
2. the forming method of the complex-curved foam aluminum component of molding according to claim 1, which is characterized in that the heater
Structure is heating furnace.
3. the forming method of the complex-curved foam aluminum component of molding according to claim 1, which is characterized in that further include step
S5, heat froth aluminium precast body foaming after the completion of, heating component continues to heat and keep the temperature to complex-curved foam aluminum component, heat preservation
Lead to cooling water to stamping die after end and pressure maintaining sizing is carried out to complex-curved foam aluminum component, guarantees the complex-curved foamed aluminium of gained
The abscess of part is close.
4. the forming method of the complex-curved foam aluminum component of molding according to claim 3, which is characterized in that add in step S5
The holding temperature of hot component is 600~800 DEG C, and soaking time is 10~20min.
5. the forming method of the complex-curved foam aluminum component of molding according to claim 1, which is characterized in that add in step S3
Hot temperature is 450~550 DEG C, and soaking time is 1~15min.
6. the forming method of the complex-curved foam aluminum component of molding according to claim 1, which is characterized in that if in step S3
It is heated using heating mechanism, then the foamed aluminium precast body after heating is transferred to stamping die rapidly after the completion of heat preservation
Interior, transfer time is no more than 10 seconds.
7. the forming method of the complex-curved foam aluminum component of molding according to claim 1, which is characterized in that moved in step S4
The distance between itself and cavity plate are 5~10mm after dynamic punch-pin, so that foamed aluminium precast body has enough foaming spaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014704.9A CN109048221B (en) | 2018-08-31 | 2018-08-31 | Forming method of foamed aluminum part with complex curved surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014704.9A CN109048221B (en) | 2018-08-31 | 2018-08-31 | Forming method of foamed aluminum part with complex curved surface |
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| CN109048221A true CN109048221A (en) | 2018-12-21 |
| CN109048221B CN109048221B (en) | 2021-02-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111805170A (en) * | 2020-05-27 | 2020-10-23 | 南京航空航天大学 | Method for forming hollow lattice structure with built-in foamed aluminum |
| CN113954285A (en) * | 2021-11-23 | 2022-01-21 | 湖南大学 | Filling process of foamed aluminum with irregular light high-strength structure |
| CN114410048A (en) * | 2022-01-27 | 2022-04-29 | 海信（山东）冰箱有限公司 | High-strength EPP packaging base cushion for refrigerator transportation and preparation method thereof |
| CN114799749A (en) * | 2022-04-22 | 2022-07-29 | 南昌航空大学 | Method for preparing foamed aluminum sandwich material by rotary friction extrusion composite electromagnetic pulse |
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| US11925977B2 (en) | 2022-04-22 | 2024-03-12 | Nanchang Hangkong University | Method of preparing aluminum foam sandwich material by rotating friction extrusion and electromagnetic pulse hybrid process |
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| CN109048221B (en) | 2021-02-19 |
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