CN110218892A - A kind of method that foam metal is prepared using novel FSP method - Google Patents
A kind of method that foam metal is prepared using novel FSP method Download PDFInfo
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- CN110218892A CN110218892A CN201910444720.XA CN201910444720A CN110218892A CN 110218892 A CN110218892 A CN 110218892A CN 201910444720 A CN201910444720 A CN 201910444720A CN 110218892 A CN110218892 A CN 110218892A
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- Prior art keywords
- foam metal
- metal
- novel
- fsp
- foaming agent
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- 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
- C22C1/08—Alloys with open or closed pores
-
- 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
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of methods for preparing foam metal using novel FSP method, it include: that (1) slots metallic substrate surfaces processing, and the preset magnesium carbonate foaming agent in fluting, foaming agent is clipped in inside metal substrate with refracting films arrangement using metal substrate；(2) the two sides multiple tracks mixing yoghurt at fluting；(3) it is foamed using flame heating processing part.The features such as this method, which prepares foam metal, has consuming little energy, easy to operate, at low cost, safe and efficient；The foam metal made of bulk substrate is not only cheaper, but also has better mechanical property, can prepare light weight by this method, sound-insulating and heat-insulating and the good foam metal of shock resistance.
Description
Technical field
Technical field of material of the present invention, in particular to a kind of method that foam metal is prepared using novel FSP method.
Background technique
Foam metal possess small density, damping, absorb impact energy it is good, heat-proof quality is good, sound insulation value is good and can inhale
A series of good advantages such as electromagnetic wave are received, the fields such as aerospace, telecommunications, petrochemical industry, biology are employed for.For example,
For the core material of wing and fuselage cover clamping piece, automobile buffer, pulse power electro-magnetic shielding cover.Some foam metals have
Good electric conductivity can be used as the catalyst carrier of chemical cell and the negative electrode material of battery.Foam metal has larger porosity
While still have higher mechanical property, this can be applied to the medical domains such as artificial bone.
Currently, the preparation of traditional foam metal mainly has fusion method, powder metallurgic method and electrochemical deposition method, fusion method
Technical process be that tackifier are added into molten metal, foaming agent is then added, foaming agent pyrolytic is in the molten metal
Bubble is generated, it is after cooling to obtain foam metal.It is that foaming agent is added in metal powder that powder metallurgic method, which manufactures foam metal,
Heated can send out of foaming agent generates aperture to obtain foaming metal during the sintering process.Electrochemical deposition method uses organic polymer
Foam is handled by conductive coating, is electroplated, foam of polymers, the several steps of sintering is gone to obtain metal foam.Due to foam metal
There are price height, the factors such as preparation process complexity are unable to get universal.Foam metal is also not in many fields and independently makes at present
, using sandwich structure, metal foam is clipped in two pieces of sheet metals.
In recent years, friction stir process (FSP) have become bulk substrate prepare foam metal precursor low cost effectively
Approach, as patent CN201510206123.5 discloses a kind of friction stir welding method for preparing closed-cell foam metal, including with
Lower step: S1, foaming agent and stabilizer powder are sufficiently mixed；S2, the mixed-powder in step S1 is evenly distributed on two pieces
Between the sheet metal stacked；S3, multi-pass is carried out to the two pieces of sheet metals stacked in step S2 using agitating friction weldering
Soldering, to obtain fine and close closed-cell foam metal precast body；S4, the closed-cell foam metal precast body in step S3 is heated
Foaming, to obtain closed-cell foam metal.Although the FSP process time is short, high production efficiency, the gold prepared using foaming agent TiH2
The cost for belonging to foamed aluminium is still very high.Further, since foaming process needs to preheat and substrate is maintained in furnace by treated, because
This consumed energy is another problem to be solved.
Summary of the invention
To solve the above problems and insufficient, the present invention provides a kind of novel FSP method of use and prepares foam gold
The method of category can make foam metal not only more cheap in price, high production efficiency, and have better mechanical property.
To achieve the goals above, the technical solution of the present invention is as follows:
A kind of method that foam metal is prepared using novel FSP method, which is characterized in that including following preparation step:
S1, metallic substrate surfaces are slotted, and foaming agent is filled in the slot of metal substrate, and by several metal substrates
It stacks, foaming agent is clipped among metal substrate；
S2, at the fluting near carry out two sides multiple tracks mixing yoghurt, foaming agent is uniformly mixed into metal substrate；
S3, it heats to process using flame and partially foam, obtain foam metal.
Preferably, in abovementioned steps S1, the groove width of the metal substrate is a height of 0.1 ~ 5mm of 1 ~ 10mm, between slot
Distance is 1 ~ 10mm.
Preferably, the diameter of stirring-head is 1 ~ 10mm, and length is 3 ~ 10mm.
Preferably, in abovementioned steps S1, the metal substrate is with a thickness of 3 ~ 20mm.
Preferably, in abovementioned steps S1, at the fluting around repeatedly carry out friction-stir processing, each process excursion amount is
0.1~10mm。
Preferably, in abovementioned steps S2, the parameter of the friction processing are as follows: stirring-head revolving speed is 300 ~ 2000rpm, feeding
Speed is 20 ~ 120mm/min, and the gradient of stirring-head is that 1 ~ 10 ° of volume under pressure is 3 ~ 25mm.
Preferably, in abovementioned steps S2, the foaming agent is carbonate based compounds.
Preferably, in above mentioned step S3, flame is mixing gas flame, inswept along stirring region using the flame envelope of flame, when
A length of 3 ~ 15 minutes, two sides carried out flame treatment simultaneously.
Compared with prior art, the present invention is made foam metal using bulk metal substrate not only cost is lower, but also
With better mechanical property, it is no longer necessary to make to press from both sides foam metal in two pieces of sheet metals by sandwich structure to improve it
The mechanical property of plate；Using the strategy of falling slot, and by the size of selection drill bit, relative offset and make foaming agent by sequentially
More uniform is distributed in metal substrate；Carbonate based compounds are used as foaming agent, cost is lower, safer；It gets rid of
Heating in traditional furnace, the method for the more energy saving mixing gas flame foamable of use are abandoned.
Make to prepare foam metal simple process through the invention, cost is lower, and has good mechanical property.
Detailed description of the invention
Fig. 1 is the process flow chart for preparing the method for foam metal in embodiment 1 using novel FSP method；
Fig. 2 is the slotting position schematic diagram for preparing the method for foam metal in embodiment 1 using novel FSP method；
Fig. 3 is the structural schematic diagram for preparing the stirring-head of method of foam metal in embodiment 1 using novel FSP method；
Fig. 4 is the process flow chart for preparing the method for foam metal in embodiment 2 using novel FSP method；
Fig. 5 is the structural schematic diagram for preparing the stirring-head of method of foam metal in embodiment 2 using novel FSP method；
Fig. 6 is the slotting position schematic diagram for preparing the method for foam metal in embodiment 2 using novel FSP method.
Specific embodiment
Come to make the present invention specific introduce below in conjunction with the drawings and specific embodiments.
Embodiment 1
The embodiment is that the mistake of foam metal is prepared using magnesium carbonate as foaming agent using 5754 aluminium alloys as metal substrate
Journey, steps are as follows:
It is 1mm that by the aluminium alloy base plate having a size of 170mm x 54mm x 3mm, to need the place of foaming to process width, which be 3mm height,
Length is the slot of 125mm, the distance of the adjacent slot of two pieces of overlapping plates be 2mm as shown in Fig. 2, and by the filling of magnesium carbonate foaming agent with
In slot.
As shown in figure 3, the stirring-head used is hard alloy steel, stirring head and shoulder diameter is 18mm, and stirring-head diameter is
6mm, length 4mm.
Machined parameters are as follows: stirring-head revolving speed is maintained at 900rpm, and the inclination angle of feed speed 80mm/min, stirring-head are
2 °, volume under pressure 3.5mm.
According to Fig. 1, specific processing flow is step 1, and the centre for making stirring-head center be in two slots is rubbed
Wipe stir process；Step 2, stirring-head carry out friction stir process toward left side offset 0.5mm；Step 3, by metal plate turn-over,
So that stirring-head center is in the intermediate of two slots and carries out friction stir process；Step 4, stirring-head left side offset 0.5mm rub
Wipe stir process.
It is outer along the length use of friction stir process machining area using oxyacetylene torch after the completion of friction stir process
Flame is inswept, and the flame heating carried out 3 minutes makes foaming inside metal substrate, obtains using 5754 aluminium alloys as the foam of substrate gold
Belong to, foam metal obtained have light weight, it is cheap and have good mechanical property.
Embodiment 2
The embodiment is to prepare foam metal using magnesium carbonate as foaming agent using 3 layer of 5754 aluminium alloy as metal substrate
Process, steps are as follows:
It is 1mm that by the aluminium alloy base plate having a size of 200mm x 60mm x 3mm, to need the place of foaming to process width, which be 3mm height,
Length is the slot of 180mm, the distance of the adjacent slot of two pieces of overlapping plates be 2mm as shown in figure 4, and by the filling of magnesium carbonate foaming agent with
In slot.
As shown in fig. 6, the stirring-head used is hard alloy steel, stirring head and shoulder diameter is 18mm, and stirring-head diameter is
6mm, length 5mm.
Machined parameters are as follows: stirring-head revolving speed is maintained at 900rpm, and the inclination angle of feed speed 80mm/min, stirring-head are
2 °, volume under pressure 4.5mm.
According to Fig.4, specific processing flow is step 1, and the centre for making stirring-head center be in two slots is rubbed
Wipe stir process；Step 2, stirring-head carry out friction stir process toward left side offset 0.5mm；Step 3, by metal plate turn-over,
So that stirring-head center is in the intermediate of two slots and carries out friction stir process；Step 4, stirring-head left side offset 0.5mm rub
Wipe stir process.
It is outer along the length use of friction stir process machining area using oxyacetylene torch after the completion of friction stir process
Flame is inswept, and the flame heating carried out 5 minutes makes foaming inside metal substrate, obtains using 5754 aluminium alloys as the foam of substrate gold
Belong to, foam metal obtained have light weight, it is cheap and have good mechanical property.
Above-described embodiment is presently preferred embodiments of the present invention, is not intended to limit the invention, all in spirit of the invention
With any modification made within principle, the technical solution that the mode of equivalent replacement or equivalent transformation obtains all falls within this hair
Within bright protection scope.
Claims (8)
1. a kind of method for preparing foam metal using novel FSP method, which is characterized in that including following preparation step:
S1, metallic substrate surfaces are slotted, and foaming agent is filled in the slot of metal substrate, and by several metal substrates
It stacks, foaming agent is clipped among metal substrate；
S2, at the fluting near carry out two sides multiple tracks mixing yoghurt, foaming agent is uniformly mixed into metal substrate；
S3, it heats to process using flame and partially foam, obtain foam metal.
2. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that institute
State metal substrate groove width be a height of 0.1 ~ 5mm of 1 ~ 10mm, between slot distance be 1 ~ 10mm.
3. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that stir
The diameter for mixing head is 1 ~ 10mm, and length is 3 ~ 10mm.
4. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that institute
The metal substrate stated is with a thickness of 3 ~ 20mm.
5. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that
Friction-stir processing is repeatedly carried out around at fluting, each process excursion amount is 0.1 ~ 10mm.
6. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that institute
State the parameter of friction processing are as follows: stirring-head revolving speed is 300 ~ 2000rpm, and feed speed is 20 ~ 120mm/min, and stirring-head inclines
Gradient is that 1 ~ 10 ° of volume under pressure is 3 ~ 25mm.
7. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that institute
The foaming agent stated is carbonate based compounds.
8. a kind of method for preparing foam metal using novel FSP method according to claim 1, which is characterized in that fire
Flame is mixing gas flame, and inswept along stirring region using the flame envelope of flame, Shi Changwei 3 ~ 15 minutes, two sides carried out at flame simultaneously
Reason.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373344A (en) * | 2010-08-13 | 2012-03-14 | 东北大学 | Preparation method and device of metal foam material |
| EP2489749A1 (en) * | 2009-10-14 | 2012-08-22 | National University Corporation Gunma University | Processes for producing precursor for functionally gradient material and producing functionally gradient material, precursor for functionally gradient material, and functionally gradient material |
| CN104818401A (en) * | 2015-04-27 | 2015-08-05 | 武汉理工大学 | Friction stir welding method for preparing closed-cell foam metal |
| CN105478994A (en) * | 2015-12-08 | 2016-04-13 | 武汉理工大学 | Tailor-welding molding method for foamed aluminum sandwiched components |
| CN107760904A (en) * | 2017-09-30 | 2018-03-06 | 哈尔滨理工大学 | Direct flame method prepares the method for porous metals and the application of the porous metals |
| CN108396163A (en) * | 2018-01-22 | 2018-08-14 | 武汉理工大学 | Carbon nanotube enhances the preparation method of foamed aluminium radical composite material |
-
2019
- 2019-05-27 CN CN201910444720.XA patent/CN110218892A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2489749A1 (en) * | 2009-10-14 | 2012-08-22 | National University Corporation Gunma University | Processes for producing precursor for functionally gradient material and producing functionally gradient material, precursor for functionally gradient material, and functionally gradient material |
| CN102373344A (en) * | 2010-08-13 | 2012-03-14 | 东北大学 | Preparation method and device of metal foam material |
| CN104818401A (en) * | 2015-04-27 | 2015-08-05 | 武汉理工大学 | Friction stir welding method for preparing closed-cell foam metal |
| CN105478994A (en) * | 2015-12-08 | 2016-04-13 | 武汉理工大学 | Tailor-welding molding method for foamed aluminum sandwiched components |
| CN107760904A (en) * | 2017-09-30 | 2018-03-06 | 哈尔滨理工大学 | Direct flame method prepares the method for porous metals and the application of the porous metals |
| CN108396163A (en) * | 2018-01-22 | 2018-08-14 | 武汉理工大学 | Carbon nanotube enhances the preparation method of foamed aluminium radical composite material |
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Application publication date: 20190910 |