CN205147304U - Utilize powder pressurizing device of SHPB depression bar - Google Patents
Utilize powder pressurizing device of SHPB depression bar Download PDFInfo
- Publication number
- CN205147304U CN205147304U CN201520816415.6U CN201520816415U CN205147304U CN 205147304 U CN205147304 U CN 205147304U CN 201520816415 U CN201520816415 U CN 201520816415U CN 205147304 U CN205147304 U CN 205147304U
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- sleeve
- bar
- powder
- cushion block
- shpb
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Abstract
The utility model discloses an utilize powder pressurizing device of SHPB depression bar, characteristics are including incident bar, transmission bar, trip rod and are used for adorning the sleeve of powder, and be provided with first cushion and second cushion in the sleeve, the powder is adorned between first cushion and second cushion, and the incident bar stretches into in the sleeve and offsets with first cushion, and the transmission bar stretches into in the sleeve and offsets with the second cushion, and incident bar and transmission bar satisfy one -dimensional stress wave theory, the advantage be through the device can realize the SHPB depression bar to the suppression of powder, and simple structure, easy dismounting, and because when suppression, the second cushion is fixed with the sleeve, has not only made things convenient for the packing of powder greatly, the hourglass powder phenomenon of having slided and having resulted in because of the cushion when still effectively having avoided the suppression.
Description
Technical field
The utility model relates to the powder compaction apparatus of field of powder metallurgy, particularly relates to a kind of powder pressing device utilizing SHPB depression bar.
Background technology
Powder metallurgy is the main method producing the work materials such as high performance structures material, cermet, special type function material.In order to the sintered article obtained, must accomplish that compressing process Midst density is uniformly distributed, but common drawing method is difficult to the high-performance products obtaining high compacted density and even density, so the dynamic pressing of high-duty, Strong Impact Loading becomes one of focus of powder metallurgy research.
Split hopkinson press bar (being called for short SHPB) technology is a kind of Main Means of research material dynamic mechanical behavior and Mathematical Modeling-MATERIALS ' DYNAMIC constitutive relation thereof.Research and propose at present and SHPB depression bar is applied to powder compaction, to study dusty material at high strain-rate (10
3~ 10
4s
-1) under densification mechanism; But also there is no practicable equipment SHPB depression bar being applied to powder compaction at present.
Summary of the invention
Technical problem to be solved in the utility model is to provide and a kind ofly can be used for practical application and structure simply utilizes the powder pressing device of SHPB depression bar.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of powder pressing device utilizing SHPB depression bar, comprise incident bar, transmission bar, trip rod and the sleeve for filling powder, the first cushion block and the second cushion block is provided with in described sleeve, powder is contained between the first described cushion block and the second described cushion block, described incident bar to stretch in described sleeve and offsets with the first described cushion block, described transmission bar to stretch in described sleeve and offsets with the second described cushion block, described incident bar and described transmission bar meet one-dismensional stress wave theory.
Be bolted to connection between the second described cushion block and described sleeve, both fix radially across described sleeve and the second described cushion block by described bolt, the first described cushion block and described sleeve axial sliding fit.
Described incident bar and described transmission bar are pasted with the first foil gauge respectively, the first described foil gauge is electrically connected with signal picker, described signal picker is electrically connected with oscillograph, can to obtain in pressing process stress wave transmission to the impact of powder densification.
Described sleeve is pasted with the second foil gauge, the second described foil gauge is electrically connected with described signal picker, can to obtain in pressing process hoop strain to the impact of powder densification.
Compared with prior art, the utility model has the advantages that and can realize the compacting of SHPB depression bar to powder by this device, and structure is simple, dismounting is simple and convenient; And during due to compacting, the second cushion block and sleeve are fixed, and not only greatly facilitate the filling of powder, the leakage powder phenomenon caused because cushion block slides when also effectively prevent compacting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in the figure, a kind of powder pressing device utilizing SHPB depression bar, comprise incident bar 1, transmission bar 2, trip rod (not shown) and the sleeve 4 for filling powder 3, the first cushion block 5 and the second cushion block 6 is provided with in sleeve 4, first cushion block 5 and sleeve 4 axial sliding fit, both fix radially across sleeve 4 and the second cushion block 6 by bolt 7, powder 3 is contained between the first cushion block 5 and the second cushion block 6, incident bar 1 to stretch in sleeve 4 and offsets with the first cushion block 5, transmission bar 2 to stretch in sleeve 4 and offsets with the second cushion block 6, incident bar 1 and transmission bar 2 meet one-dismensional stress wave theory, incident bar 1 and transmission bar 2 are pasted with the first foil gauge 8 respectively, first foil gauge 8 is electrically connected with signal picker (not shown), signal picker is electrically connected with oscillograph (not shown).
In above-described embodiment, also can paste the second foil gauge on sleeve 4, the second foil gauge is electrically connected with signal picker.
The assembling process of this powder pressing device is: before experiment starts, first sleeve 4 is placed perpendicular to horizontal plane, second cushion block 6 is loaded in sleeve 4, and with bolt 7, second cushion block 6 is fixed with sleeve 4, then powder 3 is slowly poured in sleeve 4, again the first cushion block 5 to be loaded in sleeve 4 and to be pressed on powder 3, and powder 3 is compressed gently, discharge the air in sleeve 4 as far as possible, then by sleeve 4 horizontal positioned, the left and right sides is respectively charged into incident bar 1 and transmission bar 2, and incident bar 1 and the first cushion block 5 are offseted, and transmission bar 2 and the second cushion block 6 offset.
Claims (4)
1. one kind utilizes the powder pressing device of SHPB depression bar, it is characterized in that comprising incident bar, transmission bar, trip rod and the sleeve for filling powder, the first cushion block and the second cushion block is provided with in described sleeve, powder is contained between the first described cushion block and the second described cushion block, described incident bar to stretch in described sleeve and offsets with the first described cushion block, described transmission bar to stretch in described sleeve and offsets with the second described cushion block, and described incident bar and described transmission bar meet one-dismensional stress wave theory.
2. a kind of powder pressing device utilizing SHPB depression bar as claimed in claim 1, it is characterized in that being bolted to connection between the second described cushion block and described sleeve, both fix radially across described sleeve and the second described cushion block by described bolt, the first described cushion block and described sleeve axial sliding fit.
3. a kind of powder pressing device utilizing SHPB depression bar as claimed in claim 1, it is characterized in that described incident bar and described transmission bar are pasted with the first foil gauge respectively, the first described foil gauge is electrically connected with signal picker, and described signal picker is electrically connected with oscillograph.
4. a kind of powder pressing device utilizing SHPB depression bar as claimed in claim 3, it is characterized in that described sleeve is pasted with the second foil gauge, the second described foil gauge is electrically connected with described signal picker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816415.6U CN205147304U (en) | 2015-10-21 | 2015-10-21 | Utilize powder pressurizing device of SHPB depression bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816415.6U CN205147304U (en) | 2015-10-21 | 2015-10-21 | Utilize powder pressurizing device of SHPB depression bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205147304U true CN205147304U (en) | 2016-04-13 |
Family
ID=55683043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520816415.6U Expired - Fee Related CN205147304U (en) | 2015-10-21 | 2015-10-21 | Utilize powder pressurizing device of SHPB depression bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205147304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187166A (en) * | 2018-09-04 | 2019-01-11 | 合肥姜水材性科技有限公司 | A kind of Hopkinson pressure bar rod end protective device |
| CN109883814A (en) * | 2019-03-11 | 2019-06-14 | 东南大学 | A kind of split hopkinson bar impact test apparatus |
-
2015
- 2015-10-21 CN CN201520816415.6U patent/CN205147304U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187166A (en) * | 2018-09-04 | 2019-01-11 | 合肥姜水材性科技有限公司 | A kind of Hopkinson pressure bar rod end protective device |
| CN109883814A (en) * | 2019-03-11 | 2019-06-14 | 东南大学 | A kind of split hopkinson bar impact test apparatus |
| CN109883814B (en) * | 2019-03-11 | 2021-06-01 | 东南大学 | Split Hopkinson bar impact test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160413 Termination date: 20181021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |