CN110893463B - Pressing die for hard alloy belt Kong Changbang - Google Patents
Pressing die for hard alloy belt Kong Changbang Download PDFInfo
- Publication number
- CN110893463B CN110893463B CN201911258996.5A CN201911258996A CN110893463B CN 110893463 B CN110893463 B CN 110893463B CN 201911258996 A CN201911258996 A CN 201911258996A CN 110893463 B CN110893463 B CN 110893463B
- Authority
- CN
- China
- Prior art keywords
- kong
- gangtao
- core rod
- sealing
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003825 pressing Methods 0.000 title claims abstract description 41
- 239000000956 alloy Substances 0.000 title claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 239000004033 plastic Substances 0.000 claims abstract 2
- 230000007704 transition Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 8
- 238000009694 cold isostatic pressing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000000462 isostatic pressing Methods 0.000 description 3
- 238000004520 electroporation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009704 powder extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- 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
- B22F3/03—Press-moulding apparatus therefor
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Package Frames And Binding Bands (AREA)
Abstract
The invention discloses a pressing die of a hard alloy belt Kong Changbang, which is characterized in that: the plastic rubber sleeve comprises a tubular rubber sleeve and a core rod arranged in the tubular rubber sleeve, wherein a die cavity is formed between the tubular rubber sleeve and the core rod, and sealing pieces for sealing the die cavity are arranged at two ends of the tubular rubber sleeve; the sealing piece is arranged at the two ends of the core rod, the sealing piece penetrates through the outer side of the sealing piece and stretches out of the steel sleeve, external threads are respectively arranged at the two ends of the core rod, threaded pressing sleeves are connected to the external threads at the two ends in a matched mode, and the threaded pressing sleeves limit the core rod through rotating and pressing the steel sleeve with the holes. The invention aims to provide a pressing die for a hard alloy belt Kong Changbang, which is limited in expansion and contraction and is not bent when a core rod is pressed and stressed, and smooth demolding is ensured.
Description
Technical Field
The invention relates to the technical field of cold isostatic pressing forming dies, in particular to a pressing die of a hard alloy belt Kong Changbang.
Background
The current method for producing the hard alloy long rod with the hole comprises the following steps: powder extrusion, dry bag isostatic pressing, wet bag cold isostatic pressing, electroporation after sintering, and the like. Each method has certain limitations. Products with larger cross-sectional areas can not be produced by powder extrusion under the influence of tonnage of an extruder, a die and the like; the dry bag isostatic press is suitable for producing products with larger cross-sectional area (diameter is more than 130 mm) and longer length (is more than 530 mm), and has not been developed due to the limitation of various conditions; electroporation is suitable for smaller pore products, and depth is also limited to a certain extent, and processing time is long and cost is high.
The cold isostatic pressing is to uniformly press the powder filled mould in all directions. For the production of a long rod with holes, the conditions of slightly uneven powder filling, slightly uneven core rod, slightly uneven wall thickness of a powder filling soft film, freedom degree of the core rod in the length direction and the like appear, and when the long rod with holes is subjected to isostatic pressing, the core rod is bent and cannot be demoulded, so that the product forming cannot be completed.
Disclosure of Invention
Aiming at the prior defects, the invention aims to provide a pressing die for a hard alloy belt Kong Changbang, which is limited in expansion and contraction and is not bent when a core rod is pressed and stressed, and ensures smooth demoulding.
The technical scheme of the invention is as follows:
The pressing die of the hard alloy belt Kong Changbang comprises a tubular rubber sleeve and a core rod arranged in the tubular rubber sleeve, a die cavity is formed between the tubular rubber sleeve and the core rod, and sealing pieces for sealing the die cavity are arranged at two ends of the core rod in the tubular rubber sleeve; the tubular rubber sleeve is sleeved with a steel sleeve with holes, and openings are formed in two ends of the steel sleeve with holes; the two ends of the core rod extend out of the openings at the two ends of the perforated steel sleeve, external threads are respectively arranged at the two ends of the core rod penetrating out of the perforated steel sleeve, threaded press sleeves are connected to the external threads at the two ends in a matched mode, the threaded press sleeves can press the end portions of the perforated steel sleeve through rotation, and the core rod is limited.
Specifically, the perforated steel sleeve comprises a first perforated steel sleeve and two second perforated steel sleeves, the first perforated steel sleeve is arranged outside the tubular rubber sleeve, two ends of the first perforated steel sleeve are detachably connected with the second belts Kong Gangtao, and the end parts of the second perforated steel sleeve are provided with the openings; the two ends of the tubular rubber sleeve extend into the second perforated steel sleeve respectively, the sealing piece used for sealing the die cavity is arranged at the two ends of the tubular rubber sleeve extending into the second perforated steel sleeve, and the two ends of the core rod extend out of the opening of the second perforated steel sleeve.
Specifically, the opening is with the coaxial spacing hole of plug, be provided with on the screw thread is pressed the cover with spacing hole aperture looks adaptation and coaxial spacing pipe, the plug passes spacing pipe is pressed the cover with the screw thread and is connected, spacing pipe is pressed the rotation of cover through the screw thread and can be inserted in the spacing hole, carries out the secondary spacing to the plug.
Specifically, a sealing gasket is arranged between the second perforated steel sleeve and the threaded pressing sleeve.
Specifically, the external thread extends into the second belt Kong Gangtao, and a tightening nut for pressing the sealing element is further arranged on the external thread in the second perforated steel sleeve.
Specifically, the sealing piece comprises a transition rubber pad, a steel pad and a sealing rubber pad which are sequentially arranged along the end direction of the core rod.
Specifically, a sealing ring is arranged between the sealing rubber cushion and the steel cushion.
Specifically, a limiting table is arranged on the core rod in the second perforated steel sleeve, and the limiting table is in contact with the steel pad for limiting.
Specifically, a tightening piece is arranged on the tubular rubber sleeve positioned outside the sealing rubber pad.
Specifically, the limiting pipe is connected with the limiting hole in a clearance fit mode.
The invention has the beneficial effects that:
1. the pressing die adopts the two ends of the core rod to process threads, the perforated steel sleeve is fixedly connected with the core rod through the threaded pressing sleeve, and the core rod is tightly pulled, so that the perforated steel sleeve plays a supporting and limiting role, the core rod is limited in expansion and contraction and cannot bend when being pressed and stressed, and therefore the core rod is ensured to be smoothly pulled out from a pressed blank when the pressing is finished, and the pressing task is completed;
2. The first perforated steel sleeve and the two second belts Kong Gangtao are arranged, the second perforated steel sleeve is more convenient for the disassembly work of the two ends, and after the perforated steel sleeves are separated, the second perforated steel sleeve with high precision control requirements is separately processed, so that the second perforated steel sleeve is higher in precision control cost efficiency;
3. The limiting pipe arranged on the threaded pressing sleeve is matched with the limiting hole of the core rod, so that the core rod can be subjected to secondary limiting, and the core rod can smoothly deviate from the pressed blank after finishing the pressing task;
4. The sealing ring is added at the joint of the steel pad and the core rod, so that the quality of a pressed compact is prevented from being influenced by seepage from the joint when the steel pad is pressed by cold isostatic pressing.
Drawings
Fig. 1 is a schematic structural view of a pressing mold of the cemented carbide belt Kong Changbang of the present invention.
In the figure, 1-core rod, 2-tubular rubber sleeve, 301-transition rubber pad, 302-steel pad, 303-sealing rubber pad, 401-first belt Kong Gangtao, 402-second belt Kong Gangtao, 5-external screw thread, 6-screw thread press sleeve, 7-limiting tube, 8-limiting hole, 9-sealing gasket, 10-tightening nut, 11-sealing ring, 12-tightening piece.
Detailed Description
To describe the technical contents, the achieved objects and effects of the present invention in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings.
A pressing die of a cemented carbide belt Kong Changbang shown in fig. 1 for preparingOuter partInner 19.2 x 885mm carbide strip Kong Changbang.
The pressing die comprises a tubular rubber sleeve 2 and a core rod 1 arranged in the tubular rubber sleeve 2, wherein a tubular die cavity is formed between the tubular rubber sleeve 2 and the core rod 1, and sealing pieces for sealing the die cavity are arranged at two ends of the core rod 1 positioned in the tubular rubber sleeve 2; the tubular rubber sleeve 2 is sleeved with a belt Kong Gangtao, and openings are formed at two ends of the steel sleeve with the holes; outside the opening at foraminiferous steel bushing both ends was stretched out at plug 1 both ends, the plug 1 both ends of wearing out foraminiferous steel bushing were provided with external screw thread 5 respectively, and the cooperation is connected with screw thread on the external screw thread 5 at both ends and presses cover 6, and screw thread presses cover 6 can compress tightly foraminiferous steel bushing's tip through the rotation, carries out spacingly to plug 1.
The working principle of the invention is as follows: firstly, a core rod 1 is placed in a tubular rubber sleeve 2, a sealing element is arranged at one end of the core rod 1, then a belt Kong Gangtao is sleeved outside the tubular rubber sleeve 2, the core rod 1 at one end of the sealing element is penetrated out of the belt Kong Gangtao, and the core rod 1 is pressed and fixed by a thread pressing sleeve; then filling hard alloy powder into a tubular mold cavity formed between the tubular rubber sleeve 2 and the core rod 1, tamping uniformly after the powder is filled, paving the top of the powder, installing a sealing element on the core rod 1 at the top, and tightly hooping the tubular rubber sleeve 2, the sealing rubber pad 303 and the core rod 1 by using a hooping element 12 to seal the whole tubular mold cavity, wherein a complete sealing body is formed inside the tubular rubber sleeve 2; and finally, installing the threaded pressing sleeve at the top and the other end of the belt Kong Gangtao to press the die, and putting the whole die into an isostatic pressing frame of a special cold isostatic pressing machine to perform cold isostatic pressing operation. In the cold isostatic pressing operation process, a pressure medium in the cold isostatic press enters the steel sleeve 4 with holes from the holes of the steel sleeve 4 with holes during forming, and as the sealing pieces at the two ends reliably seal the die cavity, the influence of the water inlet of the die on the powder forming process is better avoided; the pressure medium enables the tubular rubber sleeve 2 to squeeze alloy powder, so that pressure can be uniformly applied to the whole surface of the product, and the product is uniformly molded; in the pressing process, as the threads M16 are machined at the two ends of the core rod 1, the core rod 1 is fixedly connected and tightly drawn through the thread pressing sleeve 6, and the steel sleeve 4 with holes plays a supporting and limiting role, so that the core rod 1 is limited in expansion and contraction and cannot bend when being pressed and stressed. After the pressing process is finished, the threaded pressing sleeve and the sealing piece at the top are sequentially disassembled, the mandrel 1 is fixedly connected and tightly drawn by the threaded pressing sleeve 6, the deformation is small or not, the pressing task can be smoothly separated from the pressed blank, and the next processing is performed.
As a preferable scheme of the present embodiment, the perforated steel sleeve 4 includes a first band Kong Gangtao 401 and a second band Kong Gangtao 402, a first band Kong Gangtao 401 is provided outside the tubular rubber sleeve 2, two ends of the first band Kong Gangtao are detachably connected with the second band Kong Gangtao 402, two ends of the tubular rubber sleeve 2 respectively extend into the second band Kong Gangtao 402, two ends of the tubular rubber sleeve 2 extending into the second band Kong Gangtao 402 are provided with sealing elements 3 for sealing the cavity, and two ends of the core rod 1 extend out of the second perforated steel sleeve 402 through the sealing elements 3. The first belt Kong Gangtao and the two second belts Kong Gangtao are arranged, so that the second perforated steel sleeve 402 is more convenient for the disassembly work of the two ends, the perforated steel sleeve is separated, the second belt Kong Gangtao with high precision control requirement is separately processed, and the second belt Kong Gangtao is higher in precision control cost efficiency;
As a preferable scheme of the embodiment, the end part of the second belt Kong Gangtao 402 is provided with a limiting hole 8 coaxial with the mandrel 1, and the limiting hole 8 is larger than the diameter of the mandrel 1; the thread pressing sleeve 6 is provided with the limiting pipe 7 with the aperture of the limiting hole 8 being matched with the aperture of the limiting pipe 7, the limiting pipe 7 is connected with the limiting hole 8 in a clearance fit mode, the limiting pipe 7 is connected with the limiting hole 8 to carry out secondary limiting on the core rod 1, the higher limiting requirement is met, and the core rod 1 can be smoothly separated from a pressed blank after finishing the pressing task.
As a preferred solution of the present embodiment, a sealing gasket 9 for sealing is provided between the second belt Kong Gangtao 402 and the screw press 6.
As a preferable scheme of the embodiment, the external thread 5 extends into the second belt Kong Gangtao, the external thread 5 in the second belt Kong Gangtao is further provided with a tightening nut 10 for pressing the sealing element 3, and each end only needs to be provided with a long external thread 5 when the mandrel is processed, so that the working procedures are reduced.
As a preferable mode of the present embodiment, the seal member 3 includes a transition rubber pad 301, a steel pad 302, and a seal rubber pad 303 which are sequentially provided in the end direction of the mandrel 1; a sealing ring 11 is arranged between the sealing rubber pad 303 and the steel pad 302.
As a preferable scheme of the embodiment, a limiting table is arranged on the core rod 1 in the second belt Kong Gangtao, and the limiting table is in contact with the steel pad 302 for limiting, and can play a role in controlling the size of the cavity.
As a preferable scheme of the present embodiment, the tubular rubber sleeve 2 located outside the sealing rubber pad 303 is provided with the tightening member 12, further increasing the sealing property.
As a preferable scheme of the embodiment, the limiting pipe 7 and the limiting hole 8 are connected in a clearance fit mode, so that the mandrel 1 has better adjustability.
While the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. A pressing die for a hard alloy belt Kong Changbang, which is characterized in that: the plastic rubber sleeve comprises a tubular rubber sleeve (2) and a core rod (1) arranged in the tubular rubber sleeve (2), wherein a die cavity is formed between the tubular rubber sleeve (2) and the core rod (1), and sealing pieces for sealing the die cavity are arranged at two ends of the core rod (1) in the tubular rubber sleeve (2); the tubular rubber sleeve (2) is sleeved with a steel sleeve with holes, and openings are formed in two ends of the steel sleeve with holes; the two ends of the core rod (1) extend out of openings at two ends of the perforated steel sleeve, external threads (5) are respectively arranged at the two ends of the core rod (1) penetrating out of the perforated steel sleeve, the external threads (5) at the two ends are connected with threaded press sleeves (6) in a matched manner, and the threaded press sleeves (6) can press the end parts of the perforated steel sleeve through rotation;
The perforated steel sleeve comprises a first belt Kong Gangtao (401) and two second belts Kong Gangtao (402), the first belt Kong Gangtao (401) is arranged outside the tubular rubber sleeve (2), the second belts Kong Gangtao (402) are detachably connected to two ends of the first belt Kong Gangtao (401), and the openings are formed in the end parts of the second belts Kong Gangtao (402); the two ends of the tubular rubber sleeve (2) respectively extend into the second belt Kong Gangtao (402), the two ends of the tubular rubber sleeve (2) extending into the second belt Kong Gangtao (402) are provided with sealing elements for sealing a die cavity, and the two ends of the core rod (1) extend out of the opening of the second belt Kong Gangtao (402);
The opening is with spacing hole (8) of plug (1) coaxial, be provided with on the screw thread pressure cover (6) with spacing hole (8) aperture looks adaptation and coaxial spacing pipe (7), plug (1) pass spacing pipe (7) are connected with screw thread pressure cover (6), spacing pipe (7) can insert in spacing hole (8) through the rotation of screw thread pressure cover (6).
2. The pressing die for the cemented carbide strip Kong Changbang according to claim 1, wherein: a sealing gasket (9) is arranged between the second belt Kong Gangtao (402) and the threaded press sleeve (6).
3. The pressing die for the cemented carbide strip Kong Changbang according to claim 1, wherein: the external thread (5) extends into the second belt Kong Gangtao (402), and a tightening nut (10) for pressing the sealing element (3) is further arranged on the external thread (5) in the second belt Kong Gangtao (402).
4. The pressing die for the cemented carbide strip Kong Changbang according to claim 1, wherein: the sealing piece comprises a transition rubber pad (301), a steel pad (302) and a sealing rubber pad (303) which are sequentially arranged along the end direction of the core rod (1).
5. The pressing die for the cemented carbide strip Kong Changbang as set forth in claim 4, wherein: a sealing ring (11) is arranged between the sealing rubber pad (303) and the steel pad (302).
6. The pressing die for the cemented carbide strip Kong Changbang as set forth in claim 4, wherein: and a limiting table is arranged on the core rod (1) in the second belt Kong Gangtao (402), and the limiting table is in contact limiting with the steel pad (302).
7. The pressing die for the cemented carbide strip Kong Changbang as set forth in claim 4, wherein: a hooping piece (12) is arranged on the tubular rubber sleeve (2) positioned outside the sealing rubber pad (303).
8. The pressing die for the cemented carbide strip Kong Changbang according to claim 1, wherein: the limiting pipe (7) is connected with the limiting hole (8) in a clearance fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258996.5A CN110893463B (en) | 2019-12-10 | 2019-12-10 | Pressing die for hard alloy belt Kong Changbang |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258996.5A CN110893463B (en) | 2019-12-10 | 2019-12-10 | Pressing die for hard alloy belt Kong Changbang |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110893463A CN110893463A (en) | 2020-03-20 |
| CN110893463B true CN110893463B (en) | 2024-07-02 |
Family
ID=69787456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911258996.5A Active CN110893463B (en) | 2019-12-10 | 2019-12-10 | Pressing die for hard alloy belt Kong Changbang |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110893463B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211708102U (en) * | 2019-12-10 | 2020-10-20 | 广西梧州港德硬质合金制造有限公司 | Pressing die for hard alloy long rod with holes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200186048Y1 (en) * | 1999-12-23 | 2000-06-15 | 포항종합제철주식회사 | Mandrel with sleeve improved strip absorption power |
| CN201020537Y (en) * | 2007-05-18 | 2008-02-13 | 西北有色金属研究院 | Cold isostatic moulding die for producing sintering powder filtering tube |
| CN103112195B (en) * | 2013-01-31 | 2015-06-10 | 成都易态科技有限公司 | Isostatic pressing filter element molding die and end sealing elements thereof |
-
2019
- 2019-12-10 CN CN201911258996.5A patent/CN110893463B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211708102U (en) * | 2019-12-10 | 2020-10-20 | 广西梧州港德硬质合金制造有限公司 | Pressing die for hard alloy long rod with holes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110893463A (en) | 2020-03-20 |
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