CN109226770A - A kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method and device - Google Patents
A kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method and device Download PDFInfo
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- CN109226770A CN109226770A CN201811339989.3A CN201811339989A CN109226770A CN 109226770 A CN109226770 A CN 109226770A CN 201811339989 A CN201811339989 A CN 201811339989A CN 109226770 A CN109226770 A CN 109226770A
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- tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to metal powder metallurgy fields, specifically disclose a kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method.The method comprises the following steps: (1) being uniformly mixed tungsten-copper alloy powder with high polymer binder, be then granulated to obtain granular raw material；(2) granular raw material is put into barrel, is compressed with ultrasonic pressure head；(3) supersonic generator is opened, plastifying fusion under the action of ultrasonic energy of the high polymer binder in granular raw material drives tungsten-copper alloy powder to flow filling product type chamber；(4) supersonic generator is closed, after high polymer binder solidifies again, obtains product green compact；(5) the product green compact of acquisition are obtained into tungsten-copper alloy product after degreasing and sintering.This method is not in when encountering tungsten such as cutter existing in the prior art, and resistance is larger, when wearing comparatively fast, but encountering copper, and has the defect of sticking phenomenon generation；To more can accurate control product precision, and wastage of material is small, can preferably reduce cost.
Description
Technical field
The present invention relates to metal powder metallurgy fields, specifically disclose a kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method
And device.
Background technique
PM technique is a kind of environmentally protective metal-forming techniques, using metal powder as raw material, by different
Powder forming is made to form metallurgical bonding between powder particle by technological means for required shape by the high temperature sintering in later period,
Obtain mechanical property and the close final products of forging material.Add since it only needs to be aided with a small amount of machining or does not need machine
Work can obtain final products shape, so the product of two dimension or three-dimensional complex shapes can be manufactured with lower cost high-volume,
It is a kind of very high forming technology of cost performance.Tungsten-copper alloy is the alloy of tungsten and copper composition.The copper content of alloys in common use is 10%
~50%.Since tungsten-copper alloy had both had the low thermal expansion characteristics of tungsten, there is the characteristic of the highly conductive and high thermal conductivity with copper, so
It is widely applied in Electronic Packaging industry.Both elements itself are immiscible, cannot form solid solution or intermetallic compound, so
It cannot be prepared by the method for melting, generally by the method for powder metallurgy, after tungsten powder is mixed with copper powder, be pressed into simple
Profile is sintered in the temperature for being higher than copper fusing point, so that copper is uniformly filled in the gap of tungsten particle, form uniform pseudo-alloy.
Requirement further according to specific part is processed into required final part using mach method.Due in tungsten-copper alloy tungsten with
The property of copper is totally different, and tungsten hardness is high, and copper hardness is soft, and in machining, when cutter encounters tungsten, resistance is larger, and abrasion is very fast, but touches
When to copper, and sticking phenomenon is had, so machining is difficult to ensure dimensional accuracy, and cutter loss is big, and processing cost is high.
Summary of the invention
The technical problem to be solved by the present invention is to a kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming methods.By this method
The tungsten-copper alloy being prepared is not in when encountering tungsten such as cutter existing in the prior art in machining, and resistance is larger,
When wearing comparatively fast, but encountering copper, and have the defect of sticking phenomenon generation；To more can accurate control product precision, and it is former
Material waste is small, can preferably reduce cost.
Above-mentioned technical problem to be solved by this invention, is achieved by the following technical programs:
A kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method, it includes following steps:
(1) tungsten-copper alloy powder is uniformly mixed with high polymer binder, is then granulated to obtain granular raw material；
(2) granular raw material is put into barrel, is compressed with ultrasonic pressure head；
(3) supersonic generator is opened, the high polymer binder in granular raw material is under the action of ultrasonic energy
Plastifying fusion drives tungsten-copper alloy powder to flow filling product type chamber；
(4) supersonic generator is closed, after high polymer binder solidifies again, obtains product green compact；
(5) the product green compact of acquisition are obtained into tungsten-copper alloy product after degreasing and sintering.
Preferably, the specific method of step (1) is to mix tungsten-copper alloy powder with high polymer binder, 160~200
Paste mixture is stirred to obtain at a temperature of DEG C, and paste mixture is then moved into single screw rod or double-screw extruding pelletizing machine squeezes
It is granulated to obtain granular raw material out.
Preferably, specific method described in step (3) is closed for ultrasonic pressure head to be depressed into identified graduation position manually
Supersonic generator obtains product green compact after high polymer binder solidifies again.
Preferably, degreasing described in step (5) is to carry out degreasing with chemical means or taken off with physical means
Rouge.
It is further preferred that the degreasing and sintering specifically: put the green body into degreasing sintered all-in-one oven, with every point
The heating rate that 0.4~0.6 DEG C of clock is warming up to 550-650 DEG C, high polymer binder therein is heated after volatilizing and taking away,
1200-1400 DEG C of progress densification sintering is warming up to 3-5 DEG C per minute of heating rate again, soaking time 2-4 hours, then
Furnace cooling, it is final to obtain tungsten-copper alloy product.
Most preferably, the degreasing and sintering specifically: put the green body into degreasing sintered all-in-one oven, with per minute
0.5 DEG C of heating rate is warming up to 600 DEG C, and high polymer binder therein is heated and volatilizees and takes away and then with per minute
3-5 DEG C of heating rate is warming up to 1300 DEG C of progress densification sinterings, and soaking time 3 hours, then furnace cooling was final to obtain
Tungsten-copper alloy product.
The present invention also provides a kind of tungsten-copper alloy ultrasounds to be plasticized casting device comprising by half mold A and half mold B
The mold of composition；Product type chamber is equipped among the mold；Barrel, the barrel are provided with right above the product type chamber
Lower end is connected to product type chamber；In use, for loading granular raw material, the granular original inside the barrel
Material top is provided with ultrasonic pressure head.
Preferably, the tungsten-copper alloy ultrasound is plasticized casting device, further includes die holder, among the die holder
Equipped with groove, the half mold A and half mold B are placed in groove and are assembled into mold.
The utility model has the advantages that will be injected the present invention provides a kind of preparation method of completely new tungsten-copper alloy using ultrasonic wave
After plastics plastifying fusion in shaping raw material, make its uniform filling product type chamber, it is to be formed finish after, turn off ultrasonic wave
Device, the green compact of shape needed for feeding obtains after solidifying remove plastics bonding therein then by degreasing and sintering process
Agent can be obtained required tungsten-copper alloy product；The tungsten-copper alloy being prepared by this method is not in machining
When encountering tungsten such as cutter existing in the prior art, resistance is larger, when wearing comparatively fast, but encountering copper, and has sticking phenomenon hair
Raw defect；To more can accurate control product precision, and wastage of material is small, can preferably reduce cost.Furthermore of the invention
The tungsten-copper alloy ultrasound plasticizing casting device of offer is a kind of completely new device, the tungsten-copper alloy being prepared by the device
It is not in when encountering tungsten such as cutter existing in the prior art in machining, resistance is larger, and abrasion is very fast, but encounters copper
When, and have the defect of sticking phenomenon generation；To more can accurate control product precision, and wastage of material is small, can be preferably
Reduce cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that tungsten-copper alloy ultrasound of the present invention is plasticized casting device.
Specific embodiment
The present invention is explained further below in conjunction with specific embodiment, but embodiment does not do any type of limit to the present invention
It is fixed.
1 tungsten-copper alloy ultrasound of embodiment is plasticized injection moulding forming method
(1) tungsten-copper alloy powder is mixed with high polymer binder, 180 DEG C at a temperature of stir to obtain paste mixture,
Then paste mixture is moved into single screw rod or double-screw extruding pelletizing machine carries out extruding pelletization and obtains granular raw material；
(2) granular raw material is put into barrel, is compressed with ultrasonic pressure head；
(3) supersonic generator is opened, the high polymer binder in granular raw material is under the action of ultrasonic energy
Plastifying fusion drives tungsten-copper alloy powder to flow filling product type chamber；
(4) ultrasonic pressure head is depressed into identified graduation position manually, supersonic generator is closed, to high polymer binder
Again after solidifying, product green compact are obtained；
(5) it puts the green body into degreasing sintered all-in-one oven, 600 DEG C is warming up to 0.5 DEG C of heating rate per minute, by it
In high polymer binder heating volatilize and take away and then be warming up to 1300 DEG C with 4 DEG C of heating rate per minute and caused
Densification sintering, soaking time 3 hours, then furnace cooling was final to obtain tungsten-copper alloy product.
The tungsten-copper alloy being prepared by this method is not in that cutter existing in the prior art such as touches in machining
When to tungsten, resistance is larger, and abrasion is very fast, but when encountering copper, and has the defect of sticking phenomenon generation；To accurate can more control
The precision of product, and wastage of material is small, can preferably reduce cost.
2 tungsten-copper alloy ultrasound of embodiment is plasticized casting device
As shown in Figure 1, the invention discloses a kind of tungsten-copper alloy ultrasounds to be plasticized casting device comprising by half mold
The mold of A1 and half mold B2 composition；Product type chamber 3 is equipped among the mold；It is arranged right above the product type chamber 3
There is barrel 4,4 lower end of barrel is connected to product type chamber 3；In use, for loading granular original inside the barrel 4
Expect 5, is provided with ultrasonic pressure head 6 above the granular raw material 5；In addition, also further including die holder 7, among the die holder 7
Equipped with groove (not shown), the half mold A1 and half mold B2 are placed in groove and are assembled into mold.
Working principle: granular raw material 5 is put into barrel 6, is compressed with ultrasonic pressure head 6；Supersonic generator is opened,
High polymer binder plastifying fusion, drive under the action of ultrasonic energy by ultrasonic pressure head 6, in granular raw material 5
Tungsten-copper alloy powder flows filling product type chamber 3；With the filling of product type chamber 3 ultrasonic pressure head 6 is depressed into manually after full and to be identified
Graduation position closes supersonic generator, after high polymer binder solidifies again, obtains product green compact；
The tungsten-copper alloy being prepared using the device is not in such as cutter existing in the prior art in machining
When encountering tungsten, resistance is larger, when wearing comparatively fast, but encountering copper, and has the defect of sticking phenomenon generation；To accurate can more control
The precision of product processed, and wastage of material is small, can preferably reduce cost.
Claims (8)
1. a kind of tungsten-copper alloy ultrasound is plasticized injection moulding forming method, which is characterized in that comprise the following steps:
(1) tungsten-copper alloy powder is uniformly mixed with high polymer binder, is then granulated to obtain granular raw material；
(2) granular raw material is put into barrel, is compressed with ultrasonic pressure head；
(3) supersonic generator is opened, the high polymer binder in granular raw material is plasticized under the action of ultrasonic energy
Melting drives tungsten-copper alloy powder to flow filling product type chamber；
(4) supersonic generator is closed, after high polymer binder solidifies again, obtains product green compact；
(5) the product green compact of acquisition are obtained into tungsten-copper alloy product after degreasing and sintering.
2. tungsten-copper alloy ultrasound according to claim 1 is plasticized injection moulding forming method, which is characterized in that the tool of step (1)
Body method be tungsten-copper alloy powder is mixed with high polymer binder, 160~200 DEG C at a temperature of stir to obtain paste mix
Then paste mixture is moved to single screw rod or double-screw extruding pelletizing machine carries out extruding pelletization and obtains granular raw material by object.
3. tungsten-copper alloy ultrasound according to claim 1 is plasticized injection moulding forming method, which is characterized in that step (3) is described
Specific method for ultrasonic pressure head to be depressed into identified graduation position manually, close supersonic generator, bonded to macromolecule
After agent solidifies again, product green compact are obtained.
4. tungsten-copper alloy ultrasound according to claim 1 is plasticized injection moulding forming method, which is characterized in that institute in step (5)
The degreasing stated is to carry out degreasing with chemical means or carry out degreasing with physical means.
5. tungsten-copper alloy ultrasound according to claim 1 is plasticized injection moulding forming method, which is characterized in that the degreasing and
Sintering specifically: put the green body into degreasing sintered all-in-one oven, 550- is warming up to 0.4~0.6 DEG C of heating rate per minute
650 DEG C, high polymer binder therein is heated and volatilizees and takes away and then be warming up to 3-5 DEG C per minute of heating rate
1200-1400 DEG C of progress densification sintering, soaking time 2-4 hours, then furnace cooling was final to obtain tungsten-copper alloy product.
6. tungsten-copper alloy ultrasound according to claim 5 is plasticized injection moulding forming method, which is characterized in that the degreasing and
Sintering specifically: put the green body into degreasing sintered all-in-one oven, 600 DEG C are warming up to 0.5 DEG C of heating rate per minute, by it
In high polymer binder heating volatilize and take away and then 1300 DEG C of progress be warming up to 3-5 DEG C per minute of heating rate
Densification sintering, soaking time 3 hours, then furnace cooling was final to obtain tungsten-copper alloy product.
7. a kind of tungsten-copper alloy ultrasound is plasticized casting device, which is characterized in that including being made of half mold A and half mold B
Mold；Product type chamber is equipped among the mold；Barrel, the barrel lower end are provided with right above the product type chamber
It is connected to product type chamber；In use, being used to load granular raw material inside the barrel, on the granular raw material
Side is provided with ultrasonic pressure head.
8. tungsten-copper alloy ultrasound according to claim 7 is plasticized casting device, which is characterized in that it further include die holder,
Groove is equipped among the die holder, the half mold A and half mold B are placed in groove and are assembled into mold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811339989.3A CN109226770A (en) | 2018-11-12 | 2018-11-12 | A kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method and device |
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| CN201811339989.3A CN109226770A (en) | 2018-11-12 | 2018-11-12 | A kind of tungsten-copper alloy ultrasound plasticizing injection moulding forming method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531175A (en) * | 2020-05-09 | 2020-08-14 | 苏州大学 | Powder slurry ultrasonic field assisted embossing forming microstructure device |
| CN114851429A (en) * | 2022-04-02 | 2022-08-05 | 东北林业大学 | Induction heating and ultrasonic vibration combined wood-plastic powder extrusion forming method |
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| CN101667498A (en) * | 2009-10-13 | 2010-03-10 | 昆明理工大学 | Preparation method of W-Cu electrical contact |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531175A (en) * | 2020-05-09 | 2020-08-14 | 苏州大学 | Powder slurry ultrasonic field assisted embossing forming microstructure device |
| CN114851429A (en) * | 2022-04-02 | 2022-08-05 | 东北林业大学 | Induction heating and ultrasonic vibration combined wood-plastic powder extrusion forming method |
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