CN105033247A - Method for forming honeycomb intermetallic compound filter element and die for method - Google Patents
Method for forming honeycomb intermetallic compound filter element and die for method Download PDFInfo
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- CN105033247A CN105033247A CN201510374986.3A CN201510374986A CN105033247A CN 105033247 A CN105033247 A CN 105033247A CN 201510374986 A CN201510374986 A CN 201510374986A CN 105033247 A CN105033247 A CN 105033247A
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Abstract
The invention relates to a method for forming a honeycomb intermetallic compound filter element and a die for the method. The method comprises the following steps of pressing intermetallic compound materials filling the die cavity into a blank by up-down movement of a pressing head of the die for forming the honeycomb intermetallic compound filter element in a die cavity; then placing the die containing the blank on a demolding base, and enabling the pressing head to move in the die cavity again for forcing the blank together with a mandrel and a base which are used for forming the die cavity to be jointly separated from an external mold of the die; dismantling the pressing head and the base, and enabling the blank and the mandrel to turn into a subsequent sintering link; sintering the mandrel to be combusted and decomposed, and be separated from the blank; and sintering the blank to form the honeycomb intermetallic compound filter element. The method and the die are simple and applicable; as the mandrel can be combusted and decomposed and be separated from the blank when the blank is formed by sintering, the demolding efficiency can be greatly improved; in addition, the conditions that the blank is damaged in appearance, is deformed and the like when the mandrel is separated from the blank are effectively avoided, and the qualification rate of the blank is improved.
Description
Technical field
The present invention relates to a kind of forming method and mould of intermetallic compound filter element, specifically a kind of method for formed honeycomb shape intermetallic compound filter element and mould.
Background technology
Intermetallic compound refers to the compound that metal and metal, metal and metalloid are formed, and has the excellent good characteristic such as high temperature resistant, anti-oxidant, wear-resistant, applies very extensive.When adopting inter-metallic compound material to make cellular filter core, be common by the structure that Design of Dies becomes to comprise external mold and multiple core be arranged in this external mold.The application for a patent for invention file being CN102133768A by the publication number of applicant's earlier application of the application discloses the production method of a kind of multi-channel filter element cold isostatic mould and intermetallic compound multi-channel filter element, this method solves the cold isostatic compaction problem of intermetallic compound multi-channel filter element.But adopting the method for cold isostatic compaction intermetallic compound multi-channel filter element still more loaded down with trivial details, corresponding mould structure is also more complicated, and departs from the process of blank at core, unavoidably because of blank damage, distortion etc. that the movement of core causes.In addition, isostatic pressing technology is suitable for the larger blank of shaping draw ratio, poor to more complicated shape, and demoulding difficulty is large.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple applicable, and cost is lower, effectively can improve product percent of pass and the method for formed honeycomb shape intermetallic compound filter element be convenient in demoulding and mould.
Method for formed honeycomb shape intermetallic compound filter element of the present invention, its step comprises: a. is moved up and down in die cavity by the pressure head of the mould of formed honeycomb shape intermetallic compound filter element, thus the inter-metallic compound material be filled in die cavity is pressed into blank; B. be placed on demoulding seat by the mould comprising blank, described pressure head moves again in die cavity, thus makes blank together with the external mold forming the core of die cavity and base break away from moulds in the lump; C. remove pressure head and base, blank and core are led to follow-up sintering link; D. core combustion decomposition depart from blank when sintering, blank forms compound filter core between honeycomb metal through sintering.Described inter-metallic compound material is intermetallic compound powder material metal and/or nonmetal powder prepared according to a certain percentage, or by metal and/or nonmetal powder, additive and water or the formulated according to a certain percentage intermetallic compound pug of other solution.Inter-metallic compound material is filled in the process of die cavity, corresponding vibrating device can be set on the external mold of mould.Vibrate described external mold by vibrating device, the inter-metallic compound material in die cavity is mixed and surfacing, thus ensure the blank even density of final molding, good looking appearance.The structure of described external mold and core arranges according to the structural requirement of compound filter core between honeycomb metal.The cross section of such as core can be circular, square or hexagon etc.Because inter-metallic compound material has certain compression ratio, the ratio of the volume before compression ratio represents the volume after powder pressing and suppresses, obtain by experiment, it depends on the material, proportioning, powder particles size, briquetting pressure etc. of powder, therefore when pressure head is suppressed the inter-metallic compound material in die cavity, can according to the displacement of compression ratio control pressure head, thus ensure compressing after blank mechanical strength better, not fragile, and qualification rate is higher.In addition, because inter-metallic compound material is in configuration and follow-up filling process, inevitably produce some pores, air residual in pore can affect the strainability of the filter core of final molding, therefore described pressure head is when suppressing the inter-metallic compound material in die cavity, also can play the effect of the residual air got rid of in inter-metallic compound material, thus further increase the quality of filter core.After compound-material forms blank to required degree between extrusion metal in die cavity when pressure head, blank is placed on demoulding seat together with mould, utilizes pressure head again to move in die cavity and extrude blank, core and base disengaging external mold; Then, remove base and pressure head, blank and core are sintered; Core is combustion decomposition depart from blank when sintering, and finally obtains compound filter core between honeycomb metal that blank sintering formed.The core that the method adopts can combustion decomposition depart from blank when blank sinter molding, simple and convenient, greatly improve the efficiency of the demoulding, and effectively can avoiding the situation such as blank face damage, distortion that prior art core mould causes when departing from blank, improve the qualification rate of blank.
Further, described sintering temperature is greater than 1000 DEG C.Blank is put into sintering furnace, makes blank under high temperature action, compound filter core between the honeycomb metal needed for formation.Its sintering process can be identical with existing technique or similar.
Further, described core is made up of wood materials or bamboo fiber material.Because sintering temperature is greater than 1000 DEG C, and the burning-point of described wood materials or bamboo fiber material is usually at about 300 DEG C, therefore can when blank sinter molding, and combustion decomposition generates carbon dioxide or CO gas and solid product etc.Learn through experiment, the solid product after burning is easy to depart from from blank, therefore affects the performance of compound filter core between the honeycomb metal finally obtained hardly.In addition, described core similar can also to be decomposed when blank sinter molding and the current material not affecting filter core performance is formed by other.
Further, be placed on demoulding seat by the mould comprising blank, pressure head moves in die cavity, thus extruding blank, core and base sliding axially until depart from external mold along described external mold.Described pressure head has the size and shape that adapts with external mold inwall and core cross section outline, and pressure head and external mold inwall, all keeps being slidably matched between core cross section outline, is conducive to so to a certain extent improving demoulding efficiency.
Present invention also offers a kind of mould for said method, comprise the external mold being provided with charging aperture and the base be connected with external mold, it is characterized in that being provided with in described external mold can when blank sintering forms compound filter core between honeycomb metal the core of combustion decomposition, axial one end of described core connects base, and the axial other end of core is connected with the pressure head coordinated with external mold inwall and core cross section outline.The structure of described external mold and core arranges according to the structural requirement of compound filter core between honeycomb metal.The cross section of such as core can be circular, square or hexagon etc.Be provided with multiple core in described external mold, make between external mold and core, to form cellular die cavity.Described external mold also can arrange corresponding vibrating device, when inter-metallic compound material being filled into die cavity from charging aperture, open vibrating device and drive external mold vibration, the inter-metallic compound material be filled in die cavity can be made to mix and surfacing, thus ensure blank even density, the good looking appearance of final molding.After compound-material forms blank between extrusion metal in die cavity when pressure head, blank is placed on demoulding seat together with mould, utilizes pressure head again to move in die cavity and extrude blank, core and base until depart from external mold; After dismounting base and pressure head, can sinter together with core blank.Described core can when sintering combustion decomposition depart from blank, finally obtain compound filter core between honeycomb metal.The structure of this mould is simple, easy to use; Utilize core can combustion decomposition depart from blank when blank sinter molding, the efficiency of the demoulding can greatly be improved; And effectively avoiding the situation such as blank face damage, distortion that prior art core mould causes when departing from blank, improve the qualification rate of blank.
Further, be sliding connection between described pressure head and core, such pressure head moves more convenient, rapid in die cavity, is conducive to improving shaping efficiency and demoulding efficiency.
Further, described base is provided with and supports core and the groove adapted with core.The shape of groove and size and core match, and in blank forming process, base can play a supportive role to core, makes core in die cavity, keep motionless, thus improve the form accuracy of blank.Described base also has supporting role to blank, and drop in demoulding seat after blank can be avoided to depart from external mold, the damage caused because being subject to greater impact power, further increases the qualification rate of blank.Described groove can also be provided with corresponding pattern draft to core junction, so that dismounting.
Further, described core is made up of wood materials or bamboo fiber material.Because sintering temperature is greater than 1000 DEG C, and the burning-point of described wood materials or bamboo fiber material is usually at about 300 DEG C, therefore can when blank sinter molding, and combustion decomposition generates carbon dioxide or CO gas and solid product etc.Learn through experiment, the solid product after burning is easy to depart from from blank, therefore affects the performance of compound filter core between the honeycomb metal finally obtained hardly.In addition, described core similar can also to be decomposed when blank sinter molding and the current material not affecting filter core performance is formed by other.
Method for formed honeycomb shape intermetallic compound filter element of the present invention and mould, simply applicable, cost is lower; Utilize core can combustion decomposition depart from blank when blank sinter molding, the efficiency of the demoulding can greatly be improved; And effectively avoiding the situation such as blank face damage, distortion that core causes when departing from blank, improve the qualification rate of blank.
Below in conjunction with the detailed description of the invention of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention for the method for formed honeycomb shape intermetallic compound filter element.
Fig. 2 is the structural representation of the mould for method shown in Fig. 1.
Fig. 3 is the working state schematic representation of mould shown in Fig. 2.
Detailed description of the invention
The method for formed honeycomb shape intermetallic compound filter element as shown in Figure 1, comprise step: a. is moved up and down in die cavity by the pressure head of the mould of formed honeycomb shape intermetallic compound filter element, thus the inter-metallic compound material be filled in die cavity is pressed into blank; B. be placed on demoulding seat by the mould comprising blank, described pressure head moves again in die cavity, thus makes blank together with the external mold forming the core of die cavity and base break away from moulds in the lump; C. remove pressure head and base, blank and core are led to follow-up sintering link; D. core combustion decomposition depart from blank when sintering, blank forms compound filter core between honeycomb metal through sintering.Described inter-metallic compound material is intermetallic compound powder material metal and/or nonmetal powder prepared according to a certain percentage, or by metal and/or nonmetal powder, additive and water or the formulated according to a certain percentage intermetallic compound powder material of other solution.In the process that inter-metallic compound material is filled, corresponding vibrating device can be set on described external mold.Vibrate described external mold by vibrating device, make to mix and surfacing from the inter-metallic compound material die cavity, thus ensure the blank even density of final molding, good looking appearance.Described vibrating device is existing device or equipment.The structure of described external mold and core arranges according to the structural requirement of compound filter core between honeycomb metal.Such as, the cross section of core can be circular, square or hexagon etc.Be provided with multiple core in described external mold, make between external mold and core, to form cellular die cavity.Because inter-metallic compound material has certain compression ratio, the ratio of the volume before compression ratio represents the volume after powder pressing and suppresses, obtain by experiment, it depends on the material, proportioning, powder particles size, briquetting pressure etc. of powder, therefore when pressure head is suppressed the inter-metallic compound material in die cavity, can according to the displacement of compression ratio control pressure head, thus ensure compressing after blank mechanical strength better, not fragile, and qualification rate is higher.After when pressure head, in die cavity, between extrusion metal, compound-material forms blank to required degree, blank is placed on demoulding seat together with mould, pressure head is utilized again to move in die cavity, thus extruding blank, core and base sliding axially until depart from external mold along described external mold.After blank, core and base depart from external mold, then remove base and pressure head, follow-up sintering link is carried out to blank, form compound filter core between honeycomb metal.Described sintering temperature is greater than 1000 DEG C.Described core can be made up of wood materials or bamboo fiber material, the cylindrical peg wood of such as core can be diameter be 3mm, the burning-point of peg wood at about 300 DEG C, therefore when blank sinter molding, combustion decomposition can generate carbon dioxide or CO gas and solid product etc.Learn through experiment, the solid product after burning is easy to depart from from blank, therefore affects the performance of compound filter core between the honeycomb metal finally obtained hardly.In addition, described core similar can also to be decomposed when blank sinter molding and the current material not affecting filter core performance is formed by other.
The mould for said method as shown in Figures 2 and 3, comprise the external mold 3 being provided with charging aperture 5 and the base 4 be connected with external mold 3, be provided with in described external mold 3 can blank 7 sinter form compound filter core 9 between honeycomb metal time combustion decomposition core 2, axial one end of described core 2 connects base 4, and the axial other end of core 2 is connected with the pressure head 1 coordinated with external mold 3 inwall and core 2 cross section outline.In the process that inter-metallic compound material is filled, corresponding vibrating device 6 can be set on described external mold 3.Vibrate described external mold 3 by vibrating device 6, make to mix and surfacing from charging aperture 5 inter-metallic compound material be filled into die cavity 10, thus ensure blank 7 even density of final molding, good looking appearance.Described vibrating device 6 is existing device or equipment.The structure of described external mold 3 and core 2 arranges according to the structural requirement of compound filter core 9 between honeycomb metal.Such as, the cross section of core 2 can be circular, square or hexagon etc.Be provided with multiple core 2 in described external mold 3, make between external mold 3 and core 2, to form cellular die cavity 10.After when pressure head 1, in die cavity 10, between extrusion metal, compound-material forms blank 7 to required degree, blank 7 is placed on demoulding seat 8 together with mould, pressure head 1 is utilized again to move in die cavity 10, thus extruding blank 7, core 2 and base 4 sliding axially until depart from external mold 3 along described external mold 3.Be sliding connection between described pressure head 1 and core 2, such pressure head 1 moves more convenient, rapid in die cavity 10, is conducive to improving shaping efficiency and demoulding efficiency.When reality uses, described base 4 can be provided with and support core 2 and the groove adapted with core 2.The shape of groove and size and core 2 match, in blank 7 forming process, base 4 can play a supportive role to core 2 and blank 7, core 2 is made to keep motionless in die cavity 10, thus improve the form accuracy of blank 7, and drop to after blank 7 can be avoided to depart from external mold 3 in demoulding seat 8, the damage caused because being subject to greater impact power, further increases the qualification rate of blank 7.Described groove can also be provided with corresponding pattern draft to core 2 junction, so that dismounting.After blank 7, core 2 and base 4 depart from external mold 3, then remove base 4 and pressure head 1, follow-up sintering link is carried out to blank 7, form compound filter core 9 between honeycomb metal.Because sintering temperature is greater than 1000 DEG C, described core 2 is made up of wood materials or bamboo fiber material, its burning-point, therefore can when blank 7 sinter molding generally at about 300 DEG C, and core 2 combustion decomposition can generate carbon dioxide or CO gas and solid product etc.Learn through experiment, the solid product after burning is easy to depart from from blank 7, therefore affects the performance of compound filter core 9 between the honeycomb metal finally obtained hardly.In addition, described core 2 similar can also to be decomposed when blank 7 sinter molding and the current material not affecting filter core performance is formed by other.
Claims (8)
1., for the method for formed honeycomb shape intermetallic compound filter element, its step comprises:
A. moved up and down in die cavity by the pressure head of the mould of formed honeycomb shape intermetallic compound filter element, thus the inter-metallic compound material be filled in die cavity is pressed into blank;
B. be placed on demoulding seat by the mould comprising blank, described pressure head moves again in die cavity, thus makes blank together with the external mold forming the core of die cavity and base break away from moulds in the lump;
C. remove pressure head and base, blank and core are led to follow-up sintering link;
D. core combustion decomposition depart from blank when sintering, blank forms compound filter core between honeycomb metal through sintering.
2. the method for claim 1, is characterized in that described sintering temperature is greater than 1000 DEG C.
3. the method for claim 1, is characterized in that described core is made up of wood materials or bamboo fiber material.
4. the method as described in one of claims 1 to 3, it is characterized in that the mould comprising blank to be placed on demoulding seat, pressure head moves in die cavity, thus extruding blank, core and base sliding axially until depart from external mold along described external mold.
5. for the mould of the described method of one of Claims 1-4, comprise the external mold (3) being provided with charging aperture (5) and the base (4) be connected with external mold (3), it is characterized in that being provided with in described external mold (3) can when blank (7) sintering forms compound filter core (9) between honeycomb metal the core (2) of combustion decomposition, axial one end of described core (2) connects base (4), and the axial other end of core (2) is connected with the pressure head (1) coordinated with external mold (3) inwall and core (2) cross section outline.
6. mould as claimed in claim 5, is characterized in that being sliding connection between described pressure head (1) and core (2).
7. mould as claimed in claim 5, is characterized in that described base (4) is provided with and supports core (2) and the groove adapted with core (2).
8. the mould as described in one of claim 5 to 7, is characterized in that described core (2) is made up of wood materials or bamboo fiber material.
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| CN201510374986.3A CN105033247A (en) | 2015-06-30 | 2015-06-30 | Method for forming honeycomb intermetallic compound filter element and die for method |
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| CN201510374986.3A CN105033247A (en) | 2015-06-30 | 2015-06-30 | Method for forming honeycomb intermetallic compound filter element and die for method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317742A (en) * | 2020-11-04 | 2021-02-05 | 湖南安福粉末冶金有限公司 | Diesel engine powder metallurgy valve guide pipe blank compacting die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198405A (en) * | 1990-11-28 | 1992-07-17 | Kobe Steel Ltd | Production of hard long raw material with hole |
| CN101648269A (en) * | 2009-09-21 | 2010-02-17 | 哈尔滨工业大学 | Method for preparing titanium honeycomb material |
| CN102351542A (en) * | 2011-07-12 | 2012-02-15 | 中南大学 | Preparation method of hollow-structure metal or ceramic part |
| CN202317011U (en) * | 2011-09-01 | 2012-07-11 | 西北工业大学 | Metal fiber porous material with internal hollow structure |
| CN104609862A (en) * | 2014-12-12 | 2015-05-13 | 中国科学院福建物质结构研究所 | Hot-pressing mould and method for preparation of porous structural ceramic |
-
2015
- 2015-06-30 CN CN201510374986.3A patent/CN105033247A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198405A (en) * | 1990-11-28 | 1992-07-17 | Kobe Steel Ltd | Production of hard long raw material with hole |
| CN101648269A (en) * | 2009-09-21 | 2010-02-17 | 哈尔滨工业大学 | Method for preparing titanium honeycomb material |
| CN102351542A (en) * | 2011-07-12 | 2012-02-15 | 中南大学 | Preparation method of hollow-structure metal or ceramic part |
| CN202317011U (en) * | 2011-09-01 | 2012-07-11 | 西北工业大学 | Metal fiber porous material with internal hollow structure |
| CN104609862A (en) * | 2014-12-12 | 2015-05-13 | 中国科学院福建物质结构研究所 | Hot-pressing mould and method for preparation of porous structural ceramic |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317742A (en) * | 2020-11-04 | 2021-02-05 | 湖南安福粉末冶金有限公司 | Diesel engine powder metallurgy valve guide pipe blank compacting die |
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Application publication date: 20151111 |