CN109093123A - A kind of preparation method of Combined filter element - Google Patents
A kind of preparation method of Combined filter element Download PDFInfo
- Publication number
- CN109093123A CN109093123A CN201811059936.6A CN201811059936A CN109093123A CN 109093123 A CN109093123 A CN 109093123A CN 201811059936 A CN201811059936 A CN 201811059936A CN 109093123 A CN109093123 A CN 109093123A
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- Prior art keywords
- filter element
- insert component
- preparation
- filter core
- powder
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Classifications
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- 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
- B22F3/02—Compacting only
-
- 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
- B22F3/11—Making porous workpieces or articles
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
- B22F7/004—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature comprising at least one non-porous part
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of Combined filter element preparation method, the Combined filter element is divided into two parts, i.e. filter core and insert component；It the described method comprises the following steps: (1) making the insert component of Combination filter element；(2) automation die mould special tooling is made according to the shape of insert component；(3) insert component is embedded in tooling, is placed in automation press device；(4) device parameter is adjusted, automated packing, the compacting, demoulding of equipment is realized, makes the spherical powder directly compression moulding in insert component, obtain Combination filter element green compact；(5) Combination filter element green compact are sintered, obtain Combined filter element finished product.Compared with conventional production method, the present invention realizes filter core and insert component combination is suppressed, common to be sintered, and eliminates the subsequent assembly process of filter core, has substantially saved cost.
Description
Technical field
The invention belongs to powder metallurgical technology, it is related to a kind of preparation side of Combined filter element for powder metallurgy
Method.This method can realize that filter core and insert component combination are suppressed, common to be sintered, and eliminate the assembly process of subsequent filter core, substantially
Cost is saved.
Background technique
Powder metallurgy filter core has the effects that filtering, noise reduction, fire-retardant flame proof, dedusting.It is usually used in filtering liquid or gas
In micro solid particle, after fluid passes through filter core, impurity is blocked, and clean stream object passes through filter core outflow.
Currently, P/m Porous filter core product is widely used in the row such as aerospace, petrochemical industry, machinery, environmental protection, medical treatment
Industry is generally divided into copper-based, stainless base steel, Ni-based, titanium-based, aluminium base etc. by material.To guarantee that filter core product has flourishing hole,
Ball-type metal powder is typically chosen as raw material, generally first metal powder pine is filled when conventional combination filter core produces and is packed into respective mode
It forms in tool through high temperature sintering, then filter core and insert component elastic conjunction is grouped together using press-fit approach.Product system
Weighing, filling, demoulding, assembly during work will be completed manually, therefore the process efficiency is low, at high cost.Additionally, due to
Raw material powder is not repressed and loose to be directly sintered in mold resistant to high temperature, and powder is unevenly distributed in mold, is existed
Biggish density contrast causes filter core powder weight deviation after sintering big, change in size is big, demoulding when stress it is big, be also easy to produce it is severely deformed,
High rejection rate has been further exacerbated by the raising of cost.
A kind of preparation method for Combined filter element that the present invention announces, be by press device by filter core in insert component
Direct pressing forming, it is accurate to control filter core powder weight and size, select meshbeltfurnace or vacuum drying oven to be sintered according to filter core feature, it is sintered
Filter core and metal insert component form certain metallurgical diffusion bond layer in journey, to improve the bond strength of filter core, resist
Tensile strength.Simultaneously the method reduce subsequent assembly process, cost is significantly reduced, realizes the batch, steady of Combination filter element
Fixed production brings distinct economic for enterprise.
Summary of the invention
The purpose of the present invention is achieved through the following technical solutions.
A kind of preparation method of Combined filter element, includes the following steps:
The Combined filter element is divided into two parts, i.e. filter core part and insert part.(structural schematic diagram is shown in Figure of description
1)
(1) the insert component of Combination filter element is made.
(2) automation tamping plant special tooling is made according to the shape of insert component.
(3) insert component is embedded in tooling, is placed in automation press device.
(4) device parameter is adjusted, realizes automated packing, the compacting, demoulding of equipment.So that spherical powder is directly in insert portion
Compression moulding in part obtains Combination filter element green compact.
(5) Combination filter element green compact are sintered, the Combined filter element finished product needed.
The insert component can be shaft sleeve, nut-like member, is made by machining mode.
The special tooling clamping plays the role of fixed insert component in equipment press fitting plane.
In the pressing mode, insert component and tooling do not need another instead of former needed for traditional pressing mode
Former is thrown, material is saved, reduces production cost.
The spherical powder can be spherical stainless steel powder, spherical bronze powder, globular powdered nickel, sized spherical titanium powder, ball aluminum powder
It is 10 μm -1000 μm Deng, particle size range.
The sintering of the Combination filter element can select meshbeltfurnace or vacuum drying oven to be sintered, ball after sintering according to filter core feature
Shape metal powder and metal insert component form certain metallurgical diffusion bond layer, improve the tensile strength of filter core.
The filter core sintering, needs to make protecting tool set-up, and filter core plays the role of that product is prevented to aoxidize when being sintered.
The invention has the benefit that may be implemented using a kind of Combined filter element preparation method that the present invention announces porous
Filter core batch, steady production, while solving the problems, such as next procedure assembly difficulty.Use high-precision automatic former
So that filter core directly in insert component internal shaping, is formed the sub-assembly of some strength, then through sintering furnace combined sintering, makes filter core and edge
Fill component Diffusion Welding.This mode eliminates subsequent assembly, and it is low to solve bonding strength between filter core and insert component
Problem.For suppression process using automation press device, efficiency and precision are high；Sintering process uses combined sintering technique, improves
The bond strength of filter core and insert component, after sintering product does not need to carry out elastic conjunction again, reduces assembly process, is sintered
Sintered part is protected using special tooling in the process, the phenomenon that leading to bad order because of oxidation in sintering process is avoided, so that not
The filter core of the various materials such as rust steel is able to batch, steady production, and consistency stability is substantially improved in process of producing product, can
It realizes the mass production of filter core, reduces production cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the Combination filter element that the method for the present invention is prepared；
Fig. 2 is the product pictorial diagram in the embodiment of the present invention 1；
Fig. 3 is the product pictorial diagram in the embodiment of the present invention 2；
Fig. 4 is the product pictorial diagram in the embodiment of the present invention 3.
Specific embodiment
In view of the shortcomings of the prior art, the present invention provides a kind of Combined filter element technologies of preparing.Below with reference to example and attached
The invention will be further described for figure:
Embodiment 1
A kind of Combined filter element preparation method.Its step are as follows:
(1) bar is processed into the insert component of required Combination filter element by machining mode.Insert component is shaft sleeve,
Material is SS316.
(2) according to the shape of insert component, size production automation die mould special tooling.By the frock clamping in equipment pressure
It fills in plane, insert component locations can be accurately positioned.
(3) cleaning automation press-loading device working face, and insert component is embedded in tooling, cleaning press device work
Face.
(4) raw material SS316L spherical powder needed for filter core is poured into the barrel of automation tamping plant and adjusts equipment ginseng
Number, to realize automation press-loading device automatic material weighing, dress powder, compacting.The spherical powder partial size is 125 μm -180 μm.It suppressed
Cheng Zhong, within the scope of 1.70-1.75g, filter core height controls within the scope of 3.05-3.10mm filter core Weight control.
(4) the sub-assembly green compact of filter core Yu insert component are obtained after the completion of compacting, at this time filter core density about 3.5g/cm3。
(5) sub-assembly green compact that compacting is completed are transported to by vacuum sintering furnace etc. to be sintered, need to prepare to prevent before sintering
The protective case of product oxidation, product are put in protective case, and the upper and lower end face of protective case is closed with ceramic wafer, needs to clear up before closing
Floating dust on ceramic wafer.In sintering process, temperature and vacuum degree are controlled, is to slowly warm up to 1260 DEG C of heat preservation 60min in sintering process
Cooling is come out of the stove afterwards.Period vacuum degree is not greater than 50pa.
(6) detection of size, appearance, performance is carried out after product is come out of the stove.At this time finished product filter core part with a thickness of 3.05mm,
Outer diameter 14.05mm, density about 3.6g/cm3, maximum air vent aperture is 37.8 μm, and filter core and insert component abjection power are 2.1KN.
Embodiment 2
A kind of Combined filter element preparation method.Its step are as follows:
(1) bar is processed into the insert component of required Combination filter element by machining mode.Insert component is nut class,
Material is brass.
(2) according to the shape of insert component, size production automation die mould special tooling.By the frock clamping in equipment pressure
It fills in plane, insert component locations can be accurately positioned.
(3) cleaning automation press-loading device working face, and insert component is embedded in tooling, cleaning press device work
Face.
(4) raw material 8-3 copper spherical powder needed for filter core is poured into in the barrel of automation tamping plant and is adjusted device parameter,
To realize automation press-loading device automatic material weighing, dress powder, compacting.The spherical powder partial size is 150 μm -180 μm.Pressing process
In, within the scope of 1.65-1.70g, filter core height controls within the scope of 3.55-3.60mm filter core Weight control.
(4) the sub-assembly green compact of filter core Yu insert component are obtained after the completion of compacting, at this time filter core density about 6.0g/cm3。
(5) sub-assembly green compact that compacting is completed are transported to by net strip sintering furnace etc. to be sintered, need to prepare to prevent before sintering
The protective case of product oxidation, product are put in protective case, and the upper and lower end face of protective case is closed with ceramic wafer, needs to clear up before closing
Floating dust on ceramic wafer.In sintering process, control temperature, network speed and air mass flow, sintering temperature are set as 850 DEG C, network speed setting
For 650r/min.
(6) detection of size, appearance, performance is carried out after product is come out of the stove.At this time finished product filter core part with a thickness of 3.65mm,
Outer diameter 10.0mm, density about 5.8g/cm3, maximum air vent aperture is 45.3 μm, and filter core and insert component abjection power are 3.2KN.
Embodiment 3
A kind of Combined filter element preparation method.Its step are as follows:
(1) bar is processed into the insert component of required Combination filter element by machining mode.Insert component is shaft sleeve,
Material is SS316.
(2) according to the shape of insert component, size production automation die mould special tooling.By the frock clamping in equipment pressure
It fills in plane, insert component locations can be accurately positioned.
(3) cleaning automation press-loading device working face, and insert component is embedded in tooling, cleaning press device work
Face.
(4) raw material CuSn10 spherical powder needed for filter core is poured into the barrel of automation tamping plant and adjusts equipment ginseng
Number, to realize automation press-loading device automatic material weighing, dress powder, compacting.The spherical powder partial size is 500 μm -1000 μm.It suppressed
Cheng Zhong, within the scope of 3.40-3.45g, filter core height controls within the scope of 3.65-3.70mm filter core Weight control.
(4) the sub-assembly green compact of filter core Yu insert component are obtained after the completion of compacting, at this time filter core density about 6.0g/cm3。
(5) sub-assembly green compact that compacting is completed are transported to by net strip sintering furnace etc. to be sintered, need to prepare to prevent before sintering
The protective case of product oxidation, product are put in protective case, and the upper and lower end face of protective case is closed with ceramic wafer, needs to clear up before closing
Floating dust on ceramic wafer.In sintering process, control temperature, network speed and air mass flow, sintering temperature are set as 900 DEG C, network speed setting
For 650r/min.
(6) detection of size, appearance, performance is carried out after product is come out of the stove.At this time finished product filter core part with a thickness of 3.65mm,
Outer diameter 14.05mm, density about 6.1g/cm3, maximum air vent aperture is 18.7 μm, and filter core and insert component abjection power are 3.7KN.
Technical solution of the present invention is described in detail in above-described embodiment.It is apparent that the present invention is not limited being retouched
The embodiment stated.Based on the embodiments of the present invention, those skilled in the art can also make a variety of variations accordingly, but appoint
What is equal with the present invention or similar variation shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of preparation method of Combined filter element, the Combined filter element is divided into two parts, i.e. filter core and insert component；It is special
Sign is, includes the following steps:
(1) the insert component of Combination filter element is made；
(2) automation die mould special tooling is made according to the shape of insert component；
(3) insert component is embedded in tooling, is placed in automation press device；
(4) device parameter is adjusted, automated packing, the compacting, demoulding of equipment is realized, makes spherical powder directly in insert component internal pressure
Shape is made, obtains Combination filter element green compact；
(5) Combination filter element green compact are sintered, obtain Combined filter element finished product.
2. preparation method according to claim 1, which is characterized in that step (1) the insert component is shaft sleeve, nut
Base part is made by machining mode.
3. preparation method according to claim 1, which is characterized in that die mould special tooling clamping described in step (2) exists
Equipment is pressed in plane, plays the role of fixed insert component.
4. preparation method according to claim 1, which is characterized in that compacting described in step (4) is insert component and work
Dress is instead of former needed for traditional pressing mode.
5. preparation method according to claim 1, which is characterized in that include in Combination filter element green compact described in step (4)
Raw material powder is spherical bronze powder, spherical stainless steel powder, globular powdered nickel, sized spherical titanium powder or ball aluminum powder.
6. preparation method according to claim 1, which is characterized in that spherical powder described in step (4), particle size range
It is 10 μm -1000 μm.
7. preparation method according to claim 1, which is characterized in that the sintering of step (5) the Combination filter element green compact, root
Meshbeltfurnace or vacuum drying oven is selected to be sintered according to filter core feature.
8. preparation method according to claim 1, which is characterized in that the sintering of the Combination filter element green compact further includes production
Protecting tool set-up step, filter core play the role of that product is prevented to aoxidize when being sintered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059936.6A CN109093123A (en) | 2018-09-12 | 2018-09-12 | A kind of preparation method of Combined filter element |
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| CN201811059936.6A CN109093123A (en) | 2018-09-12 | 2018-09-12 | A kind of preparation method of Combined filter element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453406A (en) * | 2020-10-27 | 2021-03-09 | 上海纪玲粉末冶金厂 | Blade connecting seat preparation method |
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| CN106103072A (en) * | 2014-04-22 | 2016-11-09 | Ntn株式会社 | Sintered mechanical part, the shaped device of powder compact and forming method |
| CN107552793A (en) * | 2017-09-15 | 2018-01-09 | 中国民航大学 | A kind of foamed aluminium filling in situ light-wall pipe and preparation method thereof |
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| US4246218A (en) * | 1978-07-25 | 1981-01-20 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Process for the manufacture of a piece comprising at least one porous abradable material |
| CN101108421A (en) * | 2007-09-05 | 2008-01-23 | 西北有色金属研究院 | Connecting method of stephanoporate inner core and compact outer shell |
| CN101564621A (en) * | 2009-05-20 | 2009-10-28 | 中南大学 | Gradient pore structured titanium filter core and preparation method thereof |
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| CN112453406A (en) * | 2020-10-27 | 2021-03-09 | 上海纪玲粉末冶金厂 | Blade connecting seat preparation method |
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Application publication date: 20181228 |