CN203711840U - Compacting die for preparing powder metallurgy porous metal material green body - Google Patents
Compacting die for preparing powder metallurgy porous metal material green body Download PDFInfo
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- CN203711840U CN203711840U CN201420065310.7U CN201420065310U CN203711840U CN 203711840 U CN203711840 U CN 203711840U CN 201420065310 U CN201420065310 U CN 201420065310U CN 203711840 U CN203711840 U CN 203711840U
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- porous metal
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Abstract
The utility model discloses a compacting die for preparing a powder metallurgy porous metal material green body. The compacting die comprises a front side plate, a rear side plate, a left side plate, a right side plate, a lower cushion block and an upper punch; the front side plate, the rear side plate, the left side plate, the right side plate and the lower cushion block define a die cavity; the compacting die also comprises a detachable die locking structure for locking the front side plate, the rear side plate, the left side plate and the right side plate. The die cavity of the compacting die for preparing the powder metallurgy porous metal material green body is rectangular and the compacting die is rectangular and is of a detachable combined die; the detachable combined die is locked by bolts and nuts or U-shaped fasteners or the pressure of a hydraulic cylinder; the locking force is removed after the green body is compacted; the compacting die is disassembled, the demoulding of the green body without a demoulding force is realized, the green body is integrally molded and not cracked and has no cracks and no defects of side and corner shortage, and large porosity can be obtained by compacting with low pressure.
Description
Technical field
The utility model relates to mould, particularly a kind of compacting tool set for the preparation of P/m Porous metal material green compact.
Background technology
Existing traditional compacting tool set for the preparation of P/m Porous metal material green compact is former integration mold, when powder is suppressed, compression is less, the density of green compact is less, porosity is higher, but compression is little to a certain extent time, and the adhesion of green compact is not strong, can be because affected by negative impression wall friction power when the demoulding in the mould of former one, green compact can ftracture defeated and dispersed, are difficult to moulding.Use high a little compression compressed fibre mixture of powders, when the demoulding, green compact enable moulding, due to green compact and negative impression wall friction, can cause green compact lateral surface fiber grain green compact to have crackle, and toward the expansion of green compact centers, have a strong impact on the intensity of material after sintering.
Utility model content
For the technical problem existing in prior art, the purpose of this utility model is: a kind of compacting tool set for the preparation of P/m Porous metal material green compact without knockout press is provided.
The purpose of this utility model is achieved through the following technical solutions: a kind of compacting tool set for the preparation of P/m Porous metal material green compact, comprise front side board, back side panel, left plate, right plate, lower cushion block and upper punch, described front side board, back side panel, left plate, right plate and lower cushion block surround die cavity, also comprise the removable mould-locking structure for locking described front side board, back side panel, left plate and right plate.
Preferably, offer respectively two mating grooves on described front side board and back side panel, described left plate and right plate are connected in described two mating grooves.
Preferably, described removable mould-locking structure is bolt, and described front side board is locked left plate and right plate by being connected with bolt with back side panel.
Preferably, described removable mould-locking structure is U-shaped fastener, and described U-shaped fastener spiral-lock is in the both sides of front side board and back side panel.
Preferably, described removable mould-locking structure comprises hydraulic cylinder and guide rail, has the chute being connected with described guide rail on described front side board, back side panel, left plate and right plate, and hydraulic cylinder is connected with front side board, back side panel, left plate and right plate respectively.
The utility model has following advantage and effect with respect to prior art:
1, the utility model is rectangle for the preparation of the compacting tool set die cavity of P/m Porous metal material green compact, detachable assembling dies for the preparation of the compacting tool set of P/m Porous metal material green compact, detachable assembling die uses bolt and nut locking, or U-shaped fastener locking, or lock with cylinder pressure, after having suppressed green compact, remove coupling mechanism force, to disassemble for the preparation of the compacting tool set of P/m Porous metal material green compact, can realize green compact without the knockout press demoulding, green compact moulding is complete, without cracking and crackle, without falling limit arrisdefect defect, low-pressure compacting can obtain macroporosity.
Brief description of the drawings
Fig. 1 is the structural representation for the preparation of the compacting tool set of P/m Porous metal material green compact in the utility model embodiment bis-and three.
Fig. 2 is the structural representation for the preparation of the compacting tool set of P/m Porous metal material green compact in the utility model embodiment bis-and four.
Fig. 3 is the explosive view for the preparation of the compacting tool set of P/m Porous metal material green compact in Fig. 2.
Fig. 4 is the structural representation for the preparation of the compacting tool set of P/m Porous metal material green compact in the utility model embodiment bis-and five.
Fig. 5 is the explosive view for the preparation of the compacting tool set of P/m Porous metal material green compact in Fig. 4.
Fig. 6 is that in embodiment tetra-, mosaic component is arranged on the schematic diagram on paper mould hot pressing shaping mold mould bases.
Fig. 7 is the explosive view of Fig. 6.
Fig. 8 be mosaic component partly cut open figure.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment mono-:
A kind of porous stainless steel manufacture method, comprises the following steps:
A. martensitic stain less steel fiber, martensitic stain less steel particle or the compacting of both mixtures are generated to block green compact;
B. green compact are carried out under vacuum to sintering, quenching and tempering and make porous stainless steel.
Described martensitic stain less steel fiber is that the stainless steel wire shearing after annealed softening forms.Described annealing temperature is incubated after 2h under 830 DEG C～900 DEG C, vacuum 0.13Pa～1.3Pa, and stove is cold.
Described martensitic stain less steel fibre diameter is 30 μ m～200 μ m, and length is 2mm～6mm; Described martensitic stain less steel grain diameter is 50 μ m～500 μ m.
The compression that martensitic stain less steel fiber, martensitic stain less steel particle or both mixtures is applied to 50MPa～300MPa is suppressed, and sintering process is utilized increasing pressure and gas quenching vacuum sintering furnace, and working vacuum degree is 5 × 10
-2pa adopted the heating rate of 10 DEG C/min to heat up before 800 DEG C, while being warmed up to 800 DEG C, and insulation 0.5h, and then be warmed up to 1280 DEG C～1320 DEG C with the heating rate of 5 DEG C/min, and be incubated 0.5h to 1h, stove is cold subsequently;
Quenching process uses vacuum quencher, and temperature is 1040 DEG C～1060 DEG C, vacuum 0.13Pa～1.3Pa, fully N after insulation
2cooling, concrete temperature retention time is to determine according to the size of workpiece, and what workpiece was large needs temperature retention time long, and what workpiece was little only needs short time insulation;
Drawing process is used vacuum tempering furnace, and temperature is 300 DEG C～370 DEG C, vacuum: 0.13Pa～1.3Pa, fully tempering after insulation, concrete temperature retention time is to determine according to the size of workpiece, and what workpiece was large needs temperature retention time long, and what workpiece was little only needs short time insulation.
If select martensitic stain less steel fiber and martensitic stain less steel particle to suppress, need to before compacting, mix, can adopt V-Mixer to mix, incorporation time is 2h～3h.
Preferably; martensitic stain less steel fibre diameter is 160 μ m; martensitic stain less steel fiber and martensitic stain less steel particle mixing ratio are 100wt%:0wt%; the compression that applies 120MPa is suppressed; obtaining porosity is 50%; aperture is the porous stainless steel of 150 μ m～200 μ m, can prepare the paper mould suction strainer mould of colding pressing.
Preferential; martensitic stain less steel particle diameter is 50 μ m; martensitic stain less steel fiber and martensitic stain less steel particle mixing ratio are: 0wt%:100wt%; the compression that applies 200MPa is suppressed; obtaining porosity is 20%; aperture is the porous stainless steel of 9 μ m, can prepare paper mould hot pressing shaping mold.
Be cut into short stainless steel fibre surface by martensitic stainless steel wire (rope) non-microcracked; after mixing compacting, itself and martensitic stain less steel particle sinter porous stainless steel metal into; can obtain very high intensity by vacuum hardening, tempering heat treatment; the porous stainless steel metal material of selecting thicker martensitic stain less steel fiber and thicker martensitic stain less steel particle to make is prepared the paper mould suction strainer mould of colding pressing; drainage rate is fast; can apply larger mold clamping force to it; the well moulding of wet base, and moisture content is few.The porous stainless steel metal material of selecting thinner martensitic stain less steel fiber and thinner martensitic stain less steel particle to make is prepared paper mould hot pressing shaping mold, can apply larger mold clamping force to it, the washiness of getting rid of, rate of drying is fast, heating energy consumption is low, product density is high, and product surface quality is good.
Embodiment bis-:
As Figure 1-5, a kind of compacting tool set for the preparation of P/m Porous metal material green compact, use the block green compact in its compacting embodiment mono-, comprise front side board 1, back side panel 2, left plate 3, right plate 4, lower cushion block 5 and upper punch 6, described front side board 1, back side panel 2, left plate 3, right plate 4 and lower cushion block 5 surround die cavity, also comprise for locking described front side board 1, back side panel 2, the removable mould-locking structure of left plate 3 and right plate 4, lower cushion block 5 is placed on the workbench of press, pass through worktable support, upper punch 6 is driven and is carried out work by press.
Preferably, on described front side board 1 and back side panel 2 both sides, offer respectively mating groove 7, described left plate 3 and right plate 4 are connected in two corresponding mating grooves 7.
Embodiment tri-:
As shown in Figure 1, described removable mould-locking structure comprises hydraulic cylinder 8 and is fixed on the guide rail 9 on press rack, on described front side board 1, back side panel 2, left plate 3 and right plate 4, have the chute 10 being connected with described guide rail 9, hydraulic cylinder 8 is connected with front side board 1, back side panel 2, left plate 3, right plate 4 and lower cushion block 5 respectively.
The course of work of the present utility model and operation principle: first hydraulic cylinder promotes lower cushion block and put in place, then promote left plate and right plate puts in place, then promote front side board and back side panel moves, make the mating groove of front side board and back side panel entangle left plate and right plate, now in the die cavity forming, to add martensitic stain less steel fiber and the diameter that diameter is 200 μ m be the mixture of the martensitic stain less steel particle of 500 μ m, martensitic stain less steel fiber and martensitic stain less steel particle mixing ratio are 60wt%:40wt%, then, drift applies 300MPa compression and suppresses, after pressurize half a minute, hydraulic cylinder is by regaining with the order of above-mentioned promotion reversed in order, realize automatic dismantling mould and green compact without knockout press, can obtain porosity is 36%, aperture is the porous stainless steel metal of 130 μ m, can be for the preparation of the paper mould suction strainer mould of colding pressing.
Embodiment tetra-:
As Figure 2-3, the present embodiment and embodiment tri-differences are: front side board 1 and back side panel 2 both sides have extension, described removable mould-locking structure is bolt 11 and nut 17, the extension correspondence of described front side board 1 and back side panel 2 offers through hole or screwed hole, bolt 11 is through tightening after screwed hole or tightening that through coordinating with nut 17 after through hole left plate 3 and right plate 4 are locked, on bolt 11, be also lined with packing ring 18, after having suppressed, unclamp bolt 11 and nut 17 gets final product the demoulding.
The course of work of the present utility model and operation principle: martensitic stain less steel fiber and the martensitic stain less steel particle trade mark are 410 martensitic stain less steels.410 martensitic stainless steel wires for martensitic stain less steel fiber (rope) diameter is 100 μ m, and 410 martensitic stainless steel wires (rope), in 830 DEG C～900 DEG C scopes of temperature, are incubated after 2h the cold annealing of stove under vacuum 0.13Pa～1.3Pa.Utilize shearing equipment that 410 martensitic stainless steel wires (rope) after annealing are cut into short stainless steel fibre, its diameter is 100 μ m, length is 2mm～6mm, martensitic stain less steel particle diameter is 100 μ m, martensitic stain less steel fiber and martensitic stain less steel particle mixing ratio are 20wt%:80wt%, use V-Mixer by martensitic stain less steel fiber and martensitic stain less steel particle mixing 2h～3h;
Use bolt and nut locking die, on press, by upper punch, martensitic stain less steel fiber and martensitic stain less steel granulate mixture being applied to 70MPa compression suppresses, pressurize half a minute, after being pressed into square-section green compact, bolt and nut is unclamped, front side board, back side panel, left plate and right plate are taken apart, realized green compact without the knockout press demoulding;
Green compact are put into increasing pressure and gas quenching vacuum triumphant return sintering furnace sintering, and working vacuum degree is lower than 5 × 10
-2pa, 800 DEG C adopt the heating rate of 10 DEG C/min to heat up in the past, are incubated 0.5h, and then are warmed up to 1280 DEG C～1320 DEG C with the heating rate of 5 DEG C/min, and be incubated 0.5h to 1h when being warmed up to 800 DEG C, cooling with stove after insulation, obtain porous stainless steel block; Porous stainless steel block after vacuum-sintering is put into vacuum air-quenching furnace and carry out quenching heat treatment, 1040 DEG C～1060 DEG C of hardening heat scopes, vacuum 0.13Pa～1.3Pa, fully N after insulation
2cooling; Porous stainless steel block after quenching is put into vacuum tempering furnace and carry out tempering heat treatment, 300 DEG C～370 DEG C of temperature ranges, vacuum 0.13Pa～1.3Pa, and fully insulation; Can obtain by above step that porosity is 28%, aperture is the porous stainless steel block of 20 μ m, tensile strength 470MPa, reach the requirement of preparing paper mould hot pressing shaping mold.By the mosaic component 13 that line cuts, the technique such as some spark, grinding, polishing, polishing, punching is prepared into the porous stainless steel block after tempering the paper mould hot pressing shaping mold as shown in Fig. 6-8, for guaranteeing to bear paper pulp model formation machine pressure and quick water-permeable and air permeable needs, generally get thickness 5mm～15mm and be advisable; Mosaic component 13 is arranged on paper mould hot pressing shaping mold mould bases 14, on mosaic component 13, have counter sink 15, pass counter sink 15 with interior hexagonal dormant bolt 16 and be connected on paper mould hot pressing shaping mold mould bases 14, paper mould hot pressing shaping mold mould bases 14 is connected with paper pulp model formation machine frame.
Embodiment five:
As shown in Fig. 4-5, the present embodiment and embodiment tri-differences are: described removable mould-locking structure is two U-shaped fasteners 12, described U-shaped fastener 12 difference spiral-locks are on the extension of front side board 1 and back side panel 2 both sides, so that left plate 3 and right plate 4 are locked, after having suppressed, unclamp U-shaped fastener 12 and get final product the demoulding.
The course of work of the present utility model and operation principle: martensitic stain less steel fiber and the martensitic stain less steel particle trade mark are 420 martensitic stain less steels, martensitic stain less steel fibre diameter is 30 μ m, martensitic stain less steel particle diameter is 50 μ m, martensitic stain less steel fiber and martensitic stain less steel particle mixing ratio are 50wt%:50wt%, in pressing process, adopt the locking of U-shaped fastener, applying compression is 50MPa, removes U-shaped fastener after moulding, take mould apart, realize without the knockout press demoulding; Can obtain porosity is 42%, and aperture is the porous stainless steel block of 13 μ m, in order to prepare paper mould hot pressing shaping mold.
Embodiment six:
The porous stainless steel that above-mentioned porous stainless steel manufacture method makes, the porosity of porous stainless steel is 20%～50%, aperture is 9 μ m～200 μ m.
Embodiment seven:
A kind of pulp molding die, use the porous stainless steel described in embodiment six to make, it cut, puts spark, grinding, polishing, polishing by line the porous stainless steel block after tempering is prepared into the cold pressing mosaic component of suction strainer mould or paper mould hot pressing shaping mold of paper mould.
Mosaic component is arranged on to paper mould colds pressing on suction strainer mould mould bases or paper mould hot pressing shaping mold mould bases.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (5)
1. the compacting tool set for the preparation of P/m Porous metal material green compact, it is characterized in that: comprise front side board, back side panel, left plate, right plate, lower cushion block and upper punch, described front side board, back side panel, left plate, right plate and lower cushion block surround die cavity, also comprise the removable mould-locking structure for locking described front side board, back side panel, left plate and right plate.
2. the compacting tool set for the preparation of P/m Porous metal material green compact according to claim 1, is characterized in that: on described front side board and back side panel, offer respectively two mating grooves, described left plate and right plate are connected in described two mating grooves.
3. the compacting tool set for the preparation of P/m Porous metal material green compact according to claim 1 and 2, is characterized in that: described removable mould-locking structure is bolt, and described front side board is locked left plate and right plate by being connected with bolt with back side panel.
4. the compacting tool set for the preparation of P/m Porous metal material green compact according to claim 1 and 2, is characterized in that: described removable mould-locking structure is U-shaped fastener, and described U-shaped fastener spiral-lock is in the both sides of front side board and back side panel.
5. the compacting tool set for the preparation of P/m Porous metal material green compact according to claim 1 and 2, it is characterized in that: described removable mould-locking structure comprises hydraulic cylinder and guide rail, on described front side board, back side panel, left plate and right plate, have the chute being connected with described guide rail, hydraulic cylinder is connected with front side board, back side panel, left plate and right plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065310.7U CN203711840U (en) | 2014-02-13 | 2014-02-13 | Compacting die for preparing powder metallurgy porous metal material green body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065310.7U CN203711840U (en) | 2014-02-13 | 2014-02-13 | Compacting die for preparing powder metallurgy porous metal material green body |
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| Publication Number | Publication Date |
|---|---|
| CN203711840U true CN203711840U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065310.7U Expired - Fee Related CN203711840U (en) | 2014-02-13 | 2014-02-13 | Compacting die for preparing powder metallurgy porous metal material green body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108778572A (en) * | 2016-03-18 | 2018-11-09 | 号恩硬质合金材料有限公司 | Method and apparatus for manufacturing hard metal rolled-up stock and hard metal rolled-up stock |
-
2014
- 2014-02-13 CN CN201420065310.7U patent/CN203711840U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108778572A (en) * | 2016-03-18 | 2018-11-09 | 号恩硬质合金材料有限公司 | Method and apparatus for manufacturing hard metal rolled-up stock and hard metal rolled-up stock |
| US11241737B2 (en) | 2016-03-18 | 2022-02-08 | Hom Hartstoffe GmbH | Manufacturing a hard-metal pressed article |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20170213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |