CN2269914Y - Hot-shaping sintering mould - Google Patents
Hot-shaping sintering mould Download PDFInfo
- Publication number
- CN2269914Y CN2269914Y CN 96242579 CN96242579U CN2269914Y CN 2269914 Y CN2269914 Y CN 2269914Y CN 96242579 CN96242579 CN 96242579 CN 96242579 U CN96242579 U CN 96242579U CN 2269914 Y CN2269914 Y CN 2269914Y
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- CN
- China
- Prior art keywords
- die
- shaping
- die holder
- conical surface
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the field of finished products made from metal powder. The utility model is characterized in that the upper part of a shaping ferrule 3 is fit with the conic surface of the inner wall of a die cover 1, and a die core 5 is arranged in a die holder 2 along the same central axis of the die cover 1, the shaping ferrule 3 and the die holder 2. Workpieces sintered by the hot-shaping sintering die of the utility model adopts have high dimensional accuracy without deformation, and the problem pressing for solution in the field of finished products having particular form and made from metal powder is solved.
Description
The hot shaping sintering mold of the utility model belongs to by metal dust makes the finished product field, is especially made the workpiece or the used special equipment of goods of special shape by metal dust.
Make the workpiece of thin-walled, major diameter, high length, its sintered blank is shunk inhomogeneous when sintering, and sintering warpage promptly takes place, and is that metal dust is made a finished product field difficult problem anxious to be solved always.As: with a thin-walled, major diameter, the smart base of high length is placed vertically in the burning boat of sealing and is carried out vacuum or H
2During the gas sintering, promptly have corresponding amount of contraction and produce.Because workpiece bottom has frictional resistance with the burning boat, can not shrink by the power of himself shrinking naturally and put in place, and the thin-walled cracking often takes place, particularly, temperature enters the liquid phase region sintering during stage when being elevated to, because material softening, its gravity can make the cylinder Thin-Wall Piers thick, torsional deformation.Can not be and allow mould receive the power of disturbing with artificial method, from vacuum drying oven or H with workpiece
2Gas molybdenum wire furnace outside applies into.
The objective of the invention is to: at an above-mentioned difficult problem, the inventor designs, has made the utility model---hot shaping sintering mold.The smart base of sintering is contained in this mould.According to the inclined-plane motion principle, the weight of dependence workpiece self is used as power and realizes shrinking shaping, makes qualified workpiece.
The utility model " hot shaping sintering mold " is made up of die cap 1, die holder 2, shaping hoop 3, core rod 5 etc., the outer wall upper and lower of shaping hoop 3 matches with the conical surface of inboard wall of die cap 1 and die holder 2 respectively, core rod 5 along the same central axis device of die cap 1, shaping hoop 3, die holder 2 in die holder 2.
According to the workpiece demand of practical production, shaping hoop 3 is to be the annulus that an internal diameter equals the workpiece external diameter by being divided into equably that 6 or 12 or 18 trays coincide mutually, and there is a circle step 7 its lower end, to hold up workpiece; The conical surface is processed in the top and the bottom of its outer wall, and the conical surface of inboard wall with die cap 1 and die cap 2 matches respectively.
Be further described below in conjunction with the structure and the behaviour in service of accompanying drawing " hot shaping sintering mold ":
Fig. 1: be the outside drawing of the utility model " hot shaping sintering mold " at the pre-installed boat of sintering.
Fig. 2: be the profile of the utility model " hot shaping sintering mold " at the pre-installed boat of sintering.Fig. 1, Fig. 2 have described the overall structure and the confined state of " hot shaping sintering mold ".Have pore 8 on the die cap 1, shaping hoop 3 is to be the annulus that an internal diameter equals the workpiece external diameter by being divided into equably that 6 or 12 or 18 trays coincide mutually, there is a circle step 7 its inwall lower end, to hold up workpiece, the conical surface is processed in the upper and lower of its outer wall, matches with the conical surface of inboard wall of die cap 1 with die holder 2 respectively; Core rod 5 along the same central axis device of die cap 1, shaping hoop 3, die holder 2 in die holder 2.
Fig. 3 is the successfully mould behind the sintering and the profile of finished product of the utility model " hot shaping sintering mold ".It has been described sintering and has made 183 * 169 * 117mm, and weight reaches the example of 4kg/ workpiece:
Be 14～15g/cm with the isostatic cool pressing method with proportion earlier
3The WC-Co carbide alloy be pressed into a round blank, car becomes the smart base of sintering again; Afterwards, the outer wall that the tray of forming shaping hoop 3 is wrapped in one by one the smart base of sintering is placed, and step 7 holds up base bottom perimeter (gap between 12 trays of shaping hoop 3 as far as possible evenly); Be inserted in the core rod 5 on the die holder 2 then, die cap 1 is covered.During sintering, base one produces and shrinks, each tray of the shaping hoop of being close to 3 under the effect of base body and die cap 1 gravity to the center automatically hoop hold together, along with the contraction gradually of base puts in place, die cap 1 and die holder 2 close up gradually, promptly make qualified workpiece.
Adopt the workpiece of the utility model " hot shaping sintering mold " thermal sintering indeformable, the accuracy to size height has solved and has made the finished product field by metal dust and particularly make a special shape finished product institute urgency difficult problem to be solved.
Claims (1)
1. the hot shaping sintering mold of the utility model belongs to by metal dust manufacturing finished product field, form by die cap 1, die holder 2, shaping hoop 3, core rod 5 etc., it is characterized in that the top of shaping hoop 3 and the conical surface of inboard wall of die cap 1 match, the conical surface of inboard wall of its underpart and die holder 2 matches, core rod 5 along the same central axis device of die cap 1, shaping hoop 3, die holder 2 in die holder 2; Shaping hoop 3 is to be the annulus that an internal diameter equals the workpiece external diameter by being divided into equably that 6 or 12 or 18 trays coincide mutually, and there is a circle step 7 its inwall lower end, to hold up workpiece; The upper and lower part of its outer wall is processed as the conical surface, matches with the conical surface of inboard wall of die cap 1 with die cap 2 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242579 CN2269914Y (en) | 1996-12-09 | 1996-12-09 | Hot-shaping sintering mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242579 CN2269914Y (en) | 1996-12-09 | 1996-12-09 | Hot-shaping sintering mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2269914Y true CN2269914Y (en) | 1997-12-10 |
Family
ID=33916630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96242579 Expired - Fee Related CN2269914Y (en) | 1996-12-09 | 1996-12-09 | Hot-shaping sintering mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2269914Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961786A (en) * | 2010-09-21 | 2011-02-02 | 重庆文理学院 | Round sample high temperature vacuum protective atmosphere sintering mold and process |
| CN102029387A (en) * | 2010-09-21 | 2011-04-27 | 重庆文理学院 | Mold and process for sintering bar-shaped sample in high-temperature vacuum protective atmosphere |
| CN109226772A (en) * | 2018-11-20 | 2019-01-18 | 深圳艾利佳材料科技有限公司 | A kind of hot shaping methods of high-yield strength powder metallurgy product |
-
1996
- 1996-12-09 CN CN 96242579 patent/CN2269914Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961786A (en) * | 2010-09-21 | 2011-02-02 | 重庆文理学院 | Round sample high temperature vacuum protective atmosphere sintering mold and process |
| CN102029387A (en) * | 2010-09-21 | 2011-04-27 | 重庆文理学院 | Mold and process for sintering bar-shaped sample in high-temperature vacuum protective atmosphere |
| CN109226772A (en) * | 2018-11-20 | 2019-01-18 | 深圳艾利佳材料科技有限公司 | A kind of hot shaping methods of high-yield strength powder metallurgy product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |