CN101234429B - Exploding compaction method capable of eliminating side directional high speed airflow influence - Google Patents
Exploding compaction method capable of eliminating side directional high speed airflow influence Download PDFInfo
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- CN101234429B CN101234429B CN2008100105474A CN200810010547A CN101234429B CN 101234429 B CN101234429 B CN 101234429B CN 2008100105474 A CN2008100105474 A CN 2008100105474A CN 200810010547 A CN200810010547 A CN 200810010547A CN 101234429 B CN101234429 B CN 101234429B
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- powder
- metal cover
- speed airflow
- high speed
- explosive
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005056 compaction Methods 0.000 title claims description 12
- 239000000843 powder Substances 0.000 claims abstract description 58
- 239000002360 explosive Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000012805 post-processing Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 3
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 2
- 229910001573 adamantine Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Press Drives And Press Lines (AREA)
Abstract
The invention discloses an explosion compacting method which can eliminate the influence of the lateral high-speed airflow, including the following steps: the powder is put into a mold (1) to be made into a powder compact (2); the mold (1) with the powder compact (2) is positioned under a flyer (4) of an explosion device, and the lower part of the powder compact (2) is connected with a substrate (3) while the upper part of the powder compact (2) is covered by a metal cover plate (5) with a thickness of 0.4 to 8mm; an explosive cylinder in the explosion device is detonated; the powder ash is recovered and post processed; the surface of the powder compact is provided with the metal cover plate with the thickness of 0.4 to 8mm, and the flyer transmits temperature and pressure to the powder compact through the metal cover plate. Under the premise that the deepness of the impacting pressure into a powder layer is the same as the prior art, the explosion compacting method can eliminate the influence of the lateral high-speed airflow to the filling of powder, reduce the loss of powder, reduces production cost and improves product fractional conversion.
Description
Technical field:
The present invention relates to a kind of explosive compaction method, especially a kind of explosive compaction method of eliminating the side direction high speed airflow influence
Background technology:
Explosive sintering or blast are synthetic also to claim explosive compaction, is the technology general name of utilizing explosion energy to sinter dusty material into a block or synthesizing another kind of material, as explosive sintering tungsten powder, ceramic powder etc. or explosion synthesis of diamond, cubic boron nitride etc.
Existing explosive compaction method is to load onto powder in mould, through the forcing press precompressed, it is depressed into to have voidage be 10～25% periporate opisthosoma; Afterwards, the interior mould that body of powder is housed is placed on the film flying below that destructor was gone up and placed to base plate (momentum derivation plate), the film flying of mould and destructor maintains a certain distance (frame height); Ignite the detonator of destructor, make the explosive column blast in the destructor, promote film flying and directly clash into body of powder, at inner certain high temperature, the high pressure of producing of body of powder with certain flying speed, cause powder pressing or transient state phase transformation, carry out post processing and promptly obtain needed sintering or sintetics.
Those skilled in the art all thought because of there not being any barrier around the film flying in the past, so the air in film flying the place ahead will by the film flying of high-speed flight rapidly row to around, can not bring any negative effect to the target powder body, therefore the body of powder upper surface in the existing explosive compaction method exposes, and film flying directly is in contact with it, clashes into.Can be actually when the film flying of high-speed flight approaches to very little space with quilt strike body of powder surface; air therebetween is a very high pressure gas by adiabatic compression; not only can between the side slit, spray at a high speed and extrude; form extra-high voltage and hypervelocity air-flow; and can rush at the body of powder surface of surface exposure; to upset or destroy the powder packing situation of upper surface without any protection; cause the body of powder surface powder phenomenon away such as to be taken by high velocity air moment ... have a strong impact on explosive compaction and give the phase result; as adamantine blast synthetic in, the high yield of per kilogram explosive has only about 10 carats in such cases.
Summary of the invention:
The present invention is in order to solve existing in prior technology the problems referred to above, a kind of explosive compaction method of eliminating the side direction high speed airflow influence to be provided
Technical solution of the present invention is: a kind of explosive compaction method of eliminating the side direction high speed airflow influence is characterized in that following steps:
A. powder is placed mould 1 to make body of powder 2;
The mould 1 that body of powder 2 is housed in b. inciting somebody to action places the below of the film flying 4 of destructor, is connected to base plate 3 below body of powder 2, is covered with metal cover board 5 on body of powder 2, and the thickness of described metal cover board 5 is 0.4～8mm.
E. ignite the explosive column in the destructor;
F. post processing.
Described metal cover board 5 is iron plate, copper coin.
Described metal cover board 5 is fixedly connected with mould 1.
The present invention has overcome existing in prior technology technology prejudice, metal cover board after the body of powder upper surface is provided with 0.4～8mm, film flying then is passed to temperature and pressure on the body of powder by metal cover board, guaranteeing that surge enters under the degree of depth of the powder bed preceding topic same as the prior art, can eliminate of the influence of side direction high velocity air to the powder packing situation, reduce loss of powder etc., reduced production cost, improved conversion rate of products.
Description of drawings:
Fig. 1 is the structural representation of test examples 1 of the present invention.
Fig. 2 is the structural representation of test examples 2 of the present invention.
Fig. 3 is the result schematic diagram of test examples 2 of the present invention.
Fig. 4 is the schematic diagram of the embodiment of the invention.
The specific embodiment:
Test examples 1 is as shown in Figure 1:
A kind of body of powder 1 is fitted in the powder box 2 (mould), and it gives percent consolidation and reaches 71.22% of crystal density, explosive density 1.6g/cm
3, explosion velocity 7575m/s, flyer velocity V
p=3397m/s, the powder box 2 after quick-fried break into 4 and powder box edge suitable for reading and have presented the feature of being washed away.Analysis result shows that the gas major part under the film flying enters in the cavity of dress powder box, and because adiabatic compression makes the powder box spalling.
Test examples 2 is shown in Fig. 2,3:
In order further to confirm have lateral airflow to exist, the experimental provision of test examples 1 is done a repacking.Explosive column 6 and film flying 4 are contained in the central authorities of a Plastic Drum 7, the iron plate 8 that the thick 2mm of lastblock is glued in powder column outside at the bottom of the bucket, above iron plate 8, seal up simultaneously the thick pure water mud layer 9 of 60mm, treat that it is dry, on cement layer, also have water layer, on body of powder 1 upper surface, put the iron plate 5 of a thick 0.4mm, powder is covered fully, ignite powder column then and promote the film flying strike, see Fig. 2.After quick-fried as shown in Figure 3, serious air-flow occurs at powder box 2 upper surfaces and washed away phenomenon, and the pore of washing away out presents melting phenomenon, temperature is very high, this air-flow is to rush out the space between film flying 4 and iron plate 5, rush out back quilt and film flying 4 and fly synchronously below direction turns under the compression of reinforcement iron plate 8 of 2mm down, wash away the upper surface of powder box body and the airflow scouring phenomenon that forms.
More than two test examples explanations, there is air under the film flying of high-speed flight, after the film flying compression, can not be fully to discharging all around, when film flying approached to very little space with quilt strike surface, air was by adiabatic compression, and compressed very high pressure gas not only can spray at a high speed between the side slit be extruded, form the hypervelocity air-flow, and part can rush at the inside of body of powder.
Embodiment:
A. the same with prior art, starting powder such as will compacting maybe to synthesize and place mould 1 to make body of powder 2;
B. as shown in Figure 1: will in body of powder 2 is housed mould 1 place the below of destructor film flying 4 and place in advance on the base plate 3 with compactings such as copper powder or iron powder or cobalt powders, different is to be covered with metal cover board 5 on body of powder 2 upper surfaces with prior art, and the thickness of metal cover board 5 is 0.4～8mm; Metal cover board 5 is iron, copper or the density metallic plate suitable with it preferably, and metal cover board 5 can be the integrative-structure of just making when making mould 1 of fixedlying connected with mould, also can be the independent cover plate of removable cover on body of powder 2;
C. ignite the explosive column in the destructor;
C. post processing promptly obtains required product.
Use explosion synthesis of diamond of the present invention, under equal conditions, the output capacity of adamantine per kilogram explosive charge can improve about 240 carats.
Claims (2)
1. the explosive compaction method that can eliminate the side direction high speed airflow influence, carry out as follows successively:
A. powder is placed mould (1) to make body of powder (2);
The mould (1) that body of powder (2) are housed in b. inciting somebody to action places the below of the explosive column and the film flying (4) of destructor, below body of powder (2), be connected to base plate (3), on body of powder (2), be covered with metal cover board (5), the thickness of described metal cover board (5) is 0.4～8mm, and described metal cover board (5) is fixedly connected with mould (1);
C. ignite the explosive column in the destructor;
D. post processing.
2. the explosive compaction method of eliminating the side direction high speed airflow influence according to claim 1 is characterized in that: described metal cover board (5) is iron plate, copper coin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100105474A CN101234429B (en) | 2008-03-06 | 2008-03-06 | Exploding compaction method capable of eliminating side directional high speed airflow influence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100105474A CN101234429B (en) | 2008-03-06 | 2008-03-06 | Exploding compaction method capable of eliminating side directional high speed airflow influence |
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| Publication Number | Publication Date |
|---|---|
| CN101234429A CN101234429A (en) | 2008-08-06 |
| CN101234429B true CN101234429B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100105474A Active CN101234429B (en) | 2008-03-06 | 2008-03-06 | Exploding compaction method capable of eliminating side directional high speed airflow influence |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012412B (en) * | 2017-04-07 | 2018-06-01 | 华北理工大学 | A kind of preparation method of the active composite material of embedded screen net structure |
| CN108247047B (en) * | 2018-04-11 | 2024-03-29 | 中国科学技术大学 | Full-constraint weak sparse metal powder explosion compaction and powder plate explosion compounding method |
| CN113770359A (en) * | 2021-09-08 | 2021-12-10 | 厦门理工学院 | Die and method for tabletting and forming of powder material |
| CN115971487B (en) * | 2023-03-21 | 2023-06-09 | 东北大学 | Neodymium iron boron magnet explosion pressing forming die and forming method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2154141Y (en) * | 1993-07-26 | 1994-01-26 | 张登霞 | Plane device for explosive compaction powder material |
| JP2005340290A (en) * | 2004-05-24 | 2005-12-08 | Daido Steel Co Ltd | Hard magnetic solid material and its manufacturing method |
-
2008
- 2008-03-06 CN CN2008100105474A patent/CN101234429B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2154141Y (en) * | 1993-07-26 | 1994-01-26 | 张登霞 | Plane device for explosive compaction powder material |
| JP2005340290A (en) * | 2004-05-24 | 2005-12-08 | Daido Steel Co Ltd | Hard magnetic solid material and its manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN101234429A (en) | 2008-08-06 |
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Owner name: DALIAN KAIFENG SUPERHARD MATERIAL CO., LTD. Free format text: FORMER OWNER: ZHANG LUQING Effective date: 20131120 Free format text: FORMER OWNER: ZHANG KAI Effective date: 20131120 |
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Free format text: CORRECT: ADDRESS; FROM: 116022 DALIAN, LIAONING PROVINCE TO: 116000 DALIAN, LIAONING PROVINCE |
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Effective date of registration: 20131120 Address after: 116000 A, block 1, Torch Road, hi tech Zone, Liaoning, Dalian, 302 Patentee after: DALIAN KAIFENG SUPERHARD MATERIAL Co.,Ltd. Address before: 116022 No. 180, Ling River Road, Ganjingzi District, Liaoning, Dalian 3-101 Patentee before: Zhang Luqing Patentee before: Zhang Kai |
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Effective date of registration: 20220610 Address after: 116000 19-11, No. 1, Chongshan street, Xigang District, Dalian City, Liaoning Province Patentee after: Zhang Luqing Address before: 302, block a, No. 1, Huoju Road, hi tech park, Dalian Patentee before: DALIAN KAIFENG SUPERHARD MATERIAL Co.,Ltd. |
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Effective date of registration: 20220713 Address after: 116000 Industrial Park, shagangzi village, Yingchengzi street, Ganjingzi District, Dalian City, Liaoning Province Patentee after: Dalian Xinkai polycrystalline diamond Technology Co.,Ltd. Address before: 116000 19-11, No. 1, Chongshan street, Xigang District, Dalian City, Liaoning Province Patentee before: Zhang Luqing |
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