CN107020362A - Amorphous metal forming method - Google Patents
Amorphous metal forming method Download PDFInfo
- Publication number
- CN107020362A CN107020362A CN201710307676.9A CN201710307676A CN107020362A CN 107020362 A CN107020362 A CN 107020362A CN 201710307676 A CN201710307676 A CN 201710307676A CN 107020362 A CN107020362 A CN 107020362A
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- Prior art keywords
- injection
- vacuum chamber
- amorphous metal
- feed bin
- forming method
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000005300 metallic glass Substances 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 102
- 239000007924 injection Substances 0.000 claims abstract description 102
- 238000002844 melting Methods 0.000 claims abstract description 55
- 230000008018 melting Effects 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 42
- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims description 51
- 230000007246 mechanism Effects 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 13
- 239000011261 inert gas Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 11
- 238000003723 Smelting Methods 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052743 krypton Inorganic materials 0.000 claims description 4
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052754 neon Inorganic materials 0.000 claims description 4
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052704 radon Inorganic materials 0.000 claims description 4
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2023—Nozzles or shot sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
Abstract
The invention discloses a kind of amorphous metal forming method.This method is vacuumized to the vacuum chamber and die cavity of amorphous metal former first, until reaching predetermined vacuum level.Then protective gas is provided to vacuum chamber, until the air pressure in vacuum chamber reaches predetermined pressure, wherein the predetermined pressure is negative pressure or normal pressure.Then, the material in feed bin is sent into melting vessel and by material melting.Next, by injection device by the die cavity of the material injection after fusing to mould, and after injection mo(u)lding, injection plunger is stopped in the injection cylinder.The amorphous metal forming method of the present invention can reduce the manufacturing cost of used equipment, and the quality of manufactured product is greatly promoted.
Description
Technical field
The present invention relates to metal forming, and in particular to metal forming process.
Background technology
Amorphous alloy material is solidified by super chilling, and atom has little time ordered arrangement crystallization during alloy graining, and what is obtained consolidates
Grow up to disordered structure during state alloy, the crystal grain without crystal alloy, crystal boundary are present.
Non-crystaline amorphous metal has excellent physics different from common crystallization state metal material, chemical property, has high yield strong
Degree, high rigidity, super-elasticity, high-wearing feature, highly corrosion resistant etc., and also have excellent casting character, but have than conventional gold
Belong to the harsher condition of molding of solution；It is in forming process, and the component of non-crystaline amorphous metal is in the molten state, it is easy to
Some elemental gas react, and heterogeneous forming core point are formed, so as to hinder the formation of non-crystaline amorphous metal.
In order to solve that some vacuum die-cast equipments are also occurred in that in these problems, industry, airtight vacuum room is vacuumized, made
Amorphous solution is kept under vacuum conditions in whole forming process, it is to avoid non-crystaline amorphous metal melt alloying element in forming process
Oxidation.But vacuum chamber and mould sealing can not completely cut off air completely and leak into vacuum chamber, amorphous alloy material is in vacuum
It can be oxidized in melting process in cabin, this can influence the remelting of product qualification rate and amorphous alloy material to utilize.
Another way is to form malleation vacuum chamber, then toward injection inert gas in vacuum chamber in industry.
Malleation design can bring several drawbacks：First vacuum chamber should meet negative-pressure design requirement and meet malleation design requirement again, system
Make difficulty and cost is all higher；Second fused raw material pours into barrel press casting procedure, and product easily forms volume gas problem, causes product
Inside has stomata, influences product qualification rate；3rd raw material is in melting process due to there is sufficient gas to form enough heat
Exchange, energy loss ratio is larger, not energy-conserving and environment-protective；4th during raw material and die sinking is added, has inert protective gas outside
Portion's Environmental diffusion, inert gas usage amount increase, production cost is of a relatively high；5th when reinflated after exhausting vacuum, pressure
More high required amount of inert gas is more, and production cost can also increase.
The content of the invention
The purpose of the present invention is to propose to a kind of amorphous metal moulding process, the problem of technique solves existing in industry,
Cost of goods manufactured is reduced, and product qualification rate lifting, material remelting is utilized and is substantially improved.
To achieve the above object, the invention provides a kind of amorphous metal forming method, it the described method comprises the following steps：
A kind of apparatus of metal molding is provided, the apparatus of metal molding includes：Feed device, smelting apparatus, injection device,
Vacuum extractor, atmosphere protection device and fixed form and mould, wherein the mould includes dynamic model, cover half, the dynamic model
Die cavity is formed with after the cover half mold closing；The feed device is provided with feed bin and is installed on the smelting apparatus；The melting
Device is provided with vacuum chamber and the melting vessel in the vacuum chamber；The injection device includes injection cylinder and injection plunger, institute
Injection cylinder is stated to be arranged in the fixed form and provided with solution entrance, and the injection plunger is for the material injection of fusing to be entered
The die cavity；The vacuum extractor is used to vacuumize for the feed bin, the vacuum chamber and the die cavity, and the atmosphere
Protection device is used to provide protective gas to the vacuum chamber；
The vacuum chamber and the die cavity are vacuumized and monitored in real time, until reaching predetermined vacuum level；
Protective gas is provided to the vacuum chamber and is monitored in real time, until the air pressure in the vacuum chamber reaches pre- level pressure
Power, the wherein predetermined pressure are negative pressure or normal pressure；
Material in the feed bin is sent into the melting vessel and by material melting；And
By the injection device by the die cavity of the material injection after fusing to the mould.
In one embodiment, after injection mo(u)lding, the injection plunger is rested in the injection cylinder, and the mould is beaten
Open, take product away.
In another embodiment, after injection mo(u)lding, during die sinking, the injection plunger is stopped into position in the injection cylinder
The injection plunger is moved back in the side of the close mould of the solution entrance, and after the dynamic model and the cover half mold closing
Original position is returned to, and causes the vacuum chamber to keep negative pressure or normal pressure, injection next time is waited.
In another embodiment, material is added to the feed bin, and after material is added, the feed bin is closed and to institute
Feed bin is stated to vacuumize.
In another embodiment, provided with the separating mechanism operationally opened and closed between the feed bin and the vacuum chamber, wherein
Add during material, the separating mechanism is closed, and the feed bin is vacuumized to the feed bin after material is added；
After completion is vacuumized to the feed bin, the separating mechanism is opened material sending into the melting vessel, and in the material
Material in storehouse is sent into after the melting vessel, and the separating mechanism is closed.
In another embodiment, when the feed bin raw material enter melting vessel inside after, using the separating mechanism every
Feeding chamber and vacuum chamber are opened, and raw material is added into feeding chamber, is then vacuumized, waits injection mo(u)lding next time to start.
In another embodiment, the protective gas is inert gas.
In another embodiment, the protective gas is the one or more in helium, neon, argon, krypton, xenon and radon.
In another embodiment, the predetermined pressure is 0.03~1 atmospheric pressure.
In another embodiment, in injection process, the die cavity is persistently vacuumized.
In another embodiment, after the injection mo(u)lding of pre-determined number is carried out, when the protective gas in the vacuum chamber
Concentration drops to after predetermined value, is filled with protective gas to the vacuum chamber again.
According to another aspect of the present invention, a kind of amorphous metal former, the apparatus of metal molding bag are additionally provided
Include：Feed device, smelting apparatus, injection device, vacuum extractor, atmosphere protection device and fixed form and mould, wherein
The mould forms die cavity after including dynamic model and cover half, the dynamic model and the cover half mold closing；
The feed device is provided with feed bin and is installed on the smelting apparatus；
The smelting apparatus is provided with vacuum chamber and the melting vessel in the vacuum chamber；
The injection device includes injection cylinder and injection plunger, and the injection cylinder is arranged in the fixed form and provided with molten
Body entrance, and the injection plunger by the material injection of fusing for entering the die cavity；
The vacuum extractor is connected with the feed bin, the vacuum chamber and the die cavity, for for the feed bin, described
Vacuum chamber and the die cavity are vacuumized, and the atmosphere protection device is used to provide protective gas to the vacuum chamber；And
Provided with the separating mechanism operationally opened and closed between the feed bin and the vacuum chamber.
In one embodiment, the apparatus of metal molding further comprises monitoring device, for the fortune in apparatus of metal molding
During row, the pressure of the vacuum to the vacuum chamber and the inert gas in the vacuum chamber is monitored.
In one embodiment, the separating mechanism is magnetic valve or pneumatic operated valve.
In one embodiment, the outer wall of the vacuum chamber is provided with vacuum orifice and protective gas interface, wherein described take out true
Eat dishes without rice or wine to be connected with vacuum extractor and inert gas source respectively with the protective gas interface.
In one embodiment, coordinate between the injection plunger and injection cylinder for gap.
In one embodiment, the fixed form is provided with the cavity of the internal vacuum chamber opening, wherein the melt
Entrance is located in the cavity.
By the amorphous metal forming method of the application, in injection, it is possible to decrease metallic solution is involved in gas and forms gas
The probability of the defects such as hole, product quality gets a promotion.Another aspect protective gas is negative pressure or normal pressure, and the manufacture to vacuum chamber is difficult
Degree reduction, reduces the manufacturing cost and maintenance cost of equipment；Its protective gas negative pressure or normal pressure, decrease protective gas
Usage amount, inert gas cost is also reduced therewith.
Brief description of the drawings
Fig. 1 shows the structural representation for the apparatus of metal molding that the amorphous metal forming method of the present invention is used.
Fig. 2 is the structural representation of a part for Fig. 1 apparatus of metal molding.
Fig. 3 is the sectional view of the apparatus of metal molding along Fig. 1 line A-A cutting, wherein for clarity, not shown part
Structure.
Fig. 4 is the flow chart of the amorphous metal forming method according to one embodiment of the invention.
Embodiment
Presently preferred embodiments of the present invention is described in detail below with reference to accompanying drawing, to become apparent from understanding the present invention's
Objects, features and advantages.It should be understood that embodiment shown in the drawings is not limited the scope of the present invention, and it is simply
The connotation of explanation technical solution of the present invention.
As described in Fig. 1-3, apparatus of metal molding 10 includes die device 1, injection device 2, vacuum melting device 3, charging
Device 4, vacuum extractor 6 and atmosphere protection device and control device (not shown), wherein vacuum melting device 3 and other dresses
The connection put all uses vacuum sealing, and vacuum extractor 3 is that die device 1, injection device 2 and feeding device 4 are vacuumized.Mould
Tool device 1 is tightly connected with vacuum melting device 3 and for the shaping of institute's die-cast product.Feeding device 4 is connected to vacuum melting
Device 3, raw material metal is added for the melting vessel into vacuum melting device 3.Vacuum melting device 3 is used in vacuum ring
Heated metal material under border, especially amorphous metal material.
A part for injection device 2 is located in the vacuum chamber of vacuum melting device 3, for by the metal material pressure after fusing
Inject die device 1.Control device is used for the operation for controlling whole apparatus of metal molding 10.Control device is arranged to fill with charging
Put and be engaged with injection device so that the vacuum chamber of vacuum plant is maintained when material to be added to the melting vessel of feeding device
Atmosphere (air pressure), and cause gas atmosphere that vacuum chamber is maintained during the die sinking of die device and during matched moulds
Enclose.Control device includes monitoring device, in the running of apparatus of metal molding 10, monitor the vacuum of vacuum chamber with
And the inert gas pressure in vacuum chamber.Monitoring device can realize any conjunction of above-mentioned purpose including pressure sensor etc.
Suitable component.The protective gas interface 35 of atmosphere protection device and vacuum chamber is connected, for being that vacuum chamber and mould provide guarantor
Protect gas.Specifically, vacuum extractor is responsible for vacuum chamber and mould to be extracted into the vacuum values of requirement, stops vacuumizing afterwards, gas
Atmosphere protection device is responsible for vacuum chamber and mould input protective gas.
Protective gas is usually inert gas, and inert protective gas density is more than or equal to atmospheric density, can be helium, neon,
One or more in argon, krypton, xenon, radon etc..
Vacuum melting device 3 is provided with vacuum chamber 31 and melting vessel 32, and melting vessel 32 is located in vacuum chamber 31 and is used for
Melt the material from feeding device 1.Amorphous material heating from feeding chamber can be molten into melt by melting vessel.Here,
Melting vessel 32 is crucible.Crucible is placed in induction coil 33, by induction heating mode come the metal material in fusion crucible.
After the completion of fusing, melting vessel 32 can be moved to another position from a position and be incubated simultaneously.The outer wall of vacuum chamber 31
It is provided with charge door 311 and vacuum orifice 312.Charge door 311 is connected with feeding device 4, and material enters via the charge door 311
In melting vessel 32 in vacuum chamber 31.Vacuum orifice 312 is connected with vacuum extractor, for being vacuumized to vacuum chamber 31.
The feeding device of feeding device 4 is installed on the charge door 31 of vacuum chamber.Feeding device 4 is arranged to add by material
To the atmosphere that vacuum chamber 31 is maintained while melting vessel 32.Feeding device 4 includes feeding chamber 41, storehouse lid 42 and cut-off
Mechanism 44, wherein storehouse lid 42 are sealedly attached to the top of feeding chamber, separating mechanism 44 be arranged in the bottom opening of feeding chamber 41 with
Between the charge door 311 of vacuum chamber 31.Separating mechanism 44 has open mode and closed mode, wherein when separating mechanism 44 is in
During open mode, the material in feeding chamber 41 enters melting vessel 12 through separating mechanism, and is closed when separating mechanism 44 is in
During state, separating mechanism 44 stops that the material in feeding chamber 41 falls into melting vessel 12 and seals vacuum chamber 31 with feeding chamber 41
It is spaced apart.Handle 43 is additionally provided with storehouse lid 42, storehouse lid 42 can be opened when stirring handle 43.
When separating mechanism 44 is arranged to be opened every time, the material of predetermined quantity falls into melting vessel 32.It should be understood that
It can also realize that the material of predetermined quantity falls into melting vessel when opening separating mechanism 44 by the design to feeding chamber
32.Separating mechanism 44 can be made up of valve.The entrance of valve and the bottom opening of feeding chamber are tightly connected, the outlet of valve with it is true
The charge door of empty room is tightly connected.In one embodiment, valve is magnetic valve or pneumatic operated valve.
The bottom of charge door 311 is also associated with tremie pipe 45.The hypomere of tremie pipe 45 is tilted down relative to vertical direction,
So as to after material drops from charge door 31, inclined hypomere be fallen on first and speed is reduced, melting vessel is then fallen into again.
Thus, prevent material from may damage container due to quickly dropping on container.
As Figure 2-3, die device 1 includes fixed form 11, cover half 12 and dynamic model (not shown), dynamic model and cover half
It can separate or close, limit die cavity between them when dynamic model and cover half closure, fixed form is connected with smelting furnace.It is fixed
Barrel 14 is provided with template 11.Barrel 14 runs through fixed form 11.Middle part of the barrel 14 provided with melt inlet 141 and barrel 14
Provided with injection passage 142.Sprue bush 15 is provided with cover half 12.Injection passage 142 is connected with sprue bush 15, so that injection plunger (
Referred to as tup) it can be moved in the passage being collectively forming by injection passage 142 and sprue bush 15.Here, barrel is also referred to as injection
Cylinder.Fixed form 11 is additionally provided with the cavity 143 towards the inside opening of vacuum chamber 31.Melt inlet 141 is located in cavity 143.It is molten
Change container 32 in it is metal material melting after the completion of, melting vessel 32 can be moved in cavity 143 on melt inlet 141
Side, then pours into melt inlet 141 by molten metal material again.
Injection device 2 includes driver 21, injection rod 22 and injection plunger 23, wherein one end of injection rod 22 and driver 21
Connection, the other end of injection rod 22 is connected with injection plunger 23.Thus, driver 21 can drive injection plunger to be moved in injection cylinder
It is dynamic.Injection plunger 23 is by the die cavity of molten amorphous alloy melt injection to mould.Injection plunger 23 is arranged to opening in die device 1
The atmosphere of vacuum chamber 31 is maintained in mold process and during matched moulds, that is, maintains the air pressure of the inert gas in vacuum chamber.
Coordinate between injection plunger 23 and barrel 14 for gap.Coordinate between injection plunger 23 and sprue bush 15 for gap.Thus, it is possible to open
During mould and matched moulds, the atmosphere of vacuum chamber is kept.Driver 21 can be it is any can drive injection rod 22 back and forth fortune
Dynamic drive mechanism.In one preferred embodiment, driver 21 is hydraulic cylinder.The cylinder body of hydraulic cylinder is installed on outer vacuum chamber wall.
The piston rod of hydraulic cylinder is connected and is at least partially disposed in vacuum chamber with one end of injection rod 22.
Fig. 4 is the stream of the amorphous metal forming method of the above-mentioned apparatus of metal molding of use according to one embodiment of the invention
Cheng Tu.It the described method comprises the following steps：
Vacuum chamber and die cavity are vacuumized and monitored in real time, until reaching predetermined vacuum level；
There is provided and protective gas and monitor in real time to vacuum chamber, until the air pressure in vacuum chamber reaches predetermined pressure,
Wherein the predetermined pressure is negative pressure or normal pressure；
By the material feeding melting vessel in feed bin and by material melting；
By injection device by the die cavity of the material injection after fusing to mould；
After injection mo(u)lding, injection plunger is stopped in injection cylinder.
Specifically, first, after dynamic model and cover half are closed, by the vacuum extractor of equipment, smelting furnace inside is closed
Chamber and cavity body of mould are vacuumized, and reach required technological requirement, vacuumize stopping.Atmosphere protection device starts to vacuum seal
Closed chamber chamber interior fills inert protective gas, and protective gas will maintain negative pressure either normal pressure, typically can be 0.03~1 big
Between air pressure, it is preferred that between 0.05~0.5 atmospheric pressure.Amorphous raw material is added to feeding chamber, feeding chamber contains can be with
Partition-type structures and feeding chamber lid that vacuum sealing chamber isolation is opened, after charging is finished, pass through separating mechanism and feeding chamber
Lid, vacuum pumping is carried out to the small closing space that feeding chamber is constituted, non-after technological requirement needed for feeding chamber vacuum reaches
Brilliant raw material is entered inside melting vessel by blanking bend pipe, starts melting.Whole charging process does not have outside air to enter
Melting vacuum sealing chamber, effectively completely cut off contact of the non-crystaline amorphous metal melt with air, it is to avoid non-crystaline amorphous metal melt is with having
Evil elemental gas reacts and is difficult acquisition amorphous structure, and the partition-type structures for passing through feeding chamber, it is only necessary to adding
The small closing space that feeding chamber is constituted is vacuumized after material, it is not necessary to whole melting vacuum sealing chamber is repeated and takes out true
Sky, substantially reduces the time of production cycle, and production cost is also decreased.In the case where opening feeding chamber separating mechanism is begun through
During expecting bend pipe to non-crystaline amorphous metal is delivered inside melting vessel, protective gas will not be overflowed by feeding chamber, it is to avoid be protected
Protect gas pressure too low, in addition it is also necessary to protective gas is passed through to closed chamber by atmosphere protection device, reducing protective gas makes
Use cost.
Non-crystaline amorphous metal is fused into the non-crystaline amorphous metal of melting by melting vessel, and the non-crystaline amorphous metal of melting is added to from melting vessel
In injection cylinder with melt inlet, by the injection plunger inside injection cylinder, the non-crystaline amorphous metal injection of melting is set to die casting
It is molded in the die cavity that standby fixed half and moving half is limited.In injection process, the die cavity that dynamic model and cover half are limited persistently is vacuumized,
And because the protective gas in melting closed chamber is negative pressure, optimize in injection process, metallic solution is involved in gas and shape
Into the defect of stomata etc., product quality is lifted.After injection mo(u)lding, move, cover half is opened, injection plunger is rested in injection cylinder
Portion, and on the melt inlet left side of injection cylinder, the i.e. side close to mould, such as Fig. 3 injection plunger position two keeps vacuum chamber
Negative pressure or normal pressure.After dynamic, cover half closure, die cavity is vacuumized so that harmful gas concentration is less than technological requirement, then after injection plunger
Original position, such as Fig. 3 injection plunger position one are fallen back on, vacuum chamber continues to keep negative pressure or normal pressure, complete whole injection circulation.Many
After individual injection terminates, the concentration of the protective gas in vacuum chamber drops to after predetermined value, and vacuum chamber can be filled again
Enter protective gas.
According to this method, after dynamic model and cover half closure, by being provided with vacuum extractor and atmosphere protection device, when taking out
Vacuum plant is vacuumized to closed chamber inside and mold cavity reach needed for stop vacuumizing after technological requirement, atmosphere
Protection device starts to fill inert protective gas to vacuum sealing chamber interior, and it is close that inert protective gas density is more than or equal to air
Degree, can be the one or more in helium, neon, argon, krypton, xenon, radon etc..Protective gas will maintain negative pressure either normal pressure
(typically can be 0.03-1 atmospheric pressure between), in injection, it is possible to decrease metallic solution is involved in gas and forms stomata etc. and lack
Sunken probability, product quality gets a promotion.Another aspect protective gas is negative pressure or normal pressure, and the manufacture difficulty to vacuum chamber drops
It is low, reduce the manufacturing cost and maintenance cost of equipment；Its protective gas negative pressure or normal pressure, decrease the use of protective gas
Amount, inert gas cost is also reduced therewith.
In this method, in injection process, limited using injection plunger cut-off melting closed chamber and dynamic model and cover half
Die cavity, the die cavity that such dynamic model and cover half are limited can be vacuumized persistently, and because the protective gas in original die cavity is negative
Pressure, can be pumped rapidly, the defect that metallic solution is involved in gas and forms stomata etc. can be greatly diminished in press casting procedure,
Product quality is lifted.
It is pointed out that after raw material enters melting vessel inside, feeding chamber and vacuum are separated using separating mechanism
Room, raw material can be added into feeding chamber, is then vacuumized, and wait next circulation to start, the process fed to feeding chamber is not
The progress of melting, injection, die sinking, pickup can be influenceed, the production cycle is shortened.
Presently preferred embodiments of the present invention is described in detail above, it is understood that being said having read the above-mentioned of the present invention
Award after content, those skilled in the art can make various changes or modifications to the present invention.These equivalent form of values equally fall within this
Apply for appended claims limited range.
Claims (10)
1. a kind of amorphous metal forming method, it is characterised in that the described method comprises the following steps：
A kind of apparatus of metal molding is provided, the apparatus of metal molding includes：Feed device, smelting apparatus, injection device, take out true
Empty device, atmosphere protection device and fixed form and mould, wherein the mould includes dynamic model and cover half, the dynamic model and institute
Die cavity is formed after stating cover half mold closing；The feed device is provided with feed bin and is installed on the smelting apparatus；The smelting apparatus
Melting vessel provided with vacuum chamber and in the vacuum chamber；The injection device includes injection cylinder and injection plunger, the pressure
Shooting cylinder is arranged in the fixed form and provided with solution entrance, and the injection plunger is described for the material injection of fusing to be entered
Die cavity；The vacuum extractor is used to vacuumize for the feed bin, the vacuum chamber and the die cavity, and the atmosphere protection
Device is used to provide protective gas to the vacuum chamber；
The vacuum chamber and the die cavity are vacuumized and monitored in real time, until reaching predetermined vacuum level；
There is provided and protective gas and monitor in real time to the vacuum chamber, until the air pressure in the vacuum chamber reaches predetermined pressure, its
In the predetermined pressure be negative pressure or normal pressure；
Material in the feed bin is sent into the melting vessel and by material melting；And
By the injection device by the die cavity of the material injection after fusing to the mould.
2. amorphous metal forming method as claimed in claim 1, it is characterised in that after injection mo(u)lding, by the injection plunger
Rest in the injection cylinder, and the mould is opened, and takes product away.
3. amorphous metal forming method as claimed in claim 1, it is characterised in that after injection mo(u)lding, will during die sinking
The injection plunger stops the side that the injection cylinder is internally located at the close mould of the solution entrance, and in the dynamic model
With the injection plunger is returned into original position after the cover half mold closing, and cause the vacuum chamber to keep negative pressure or normal pressure, under wait
Injection.
4. amorphous metal forming method as claimed in claim 1, it is characterised in that methods described also includes step：To described
Feed bin adds material, and after material is added, the feed bin is closed and the feed bin is vacuumized.
5. amorphous metal forming method as claimed in claim 1, it is characterised in that set between the feed bin and the vacuum chamber
There is the separating mechanism operationally opened and closed, wherein being added to the feed bin during material, the separating mechanism is closed, and is being added
Enter and the feed bin is vacuumized after material；After completing to vacuumize the feed bin, the separating mechanism is opened with by material
Send into the melting vessel, and the material in the feed bin is sent into after the melting vessel, the separating mechanism is closed.
6. amorphous metal forming method as claimed in claim 5, it is characterised in that hold when the raw material of the feed bin enters fusing
After device inside, feeding chamber and vacuum chamber are separated using the separating mechanism, and raw material is added into feeding chamber, then takes out true
Sky, waits injection mo(u)lding next time to start.
7. amorphous metal forming method as claimed in claim 1, it is characterised in that the protective gas is inert gas.
8. amorphous metal forming method as claimed in claim 1, it is characterised in that the protective gas be helium, neon, argon, krypton,
One or more in xenon and radon.
9. amorphous metal forming method as claimed in claim 1, it is characterised in that the predetermined pressure is 0.03~1 big
Air pressure.
10. amorphous metal forming method as claimed in claim 1, it is characterised in that in injection process, continues to the die cavity
Vacuumize.
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