BR9901512A - Processo de extração por plasma de ligantes - Google Patents
Processo de extração por plasma de ligantesInfo
- Publication number
- BR9901512A BR9901512A BR9901512-9A BR9901512A BR9901512A BR 9901512 A BR9901512 A BR 9901512A BR 9901512 A BR9901512 A BR 9901512A BR 9901512 A BR9901512 A BR 9901512A
- Authority
- BR
- Brazil
- Prior art keywords
- hydrogen
- plasma
- parts
- reduction
- reactive species
- Prior art date
Links
- 238000000605 extraction Methods 0.000 title abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 4
- 239000007789 gas Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 239000011230 binding agent Substances 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000003446 ligand Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005381 potential energy Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/14—Surface shaping of articles, e.g. embossing; Apparatus therefor by plasma treatment
-
- 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
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
- B22F3/1025—Removal of binder or filler not by heating only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Plasma Technology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Powder Metallurgy (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
PROCESSO DE EXTRAçãO POR PLASMA DE LIGANTES EM PEçAS OBTIDAS POR MOLDAGEM DE PóS POR INJEçãO é um processo termoquímico realizado em um reator de plasma, que utiliza a descarga elétrica em atmosfera gasosa de baixa pressão, a qual contém hidrogênio ou outro gás atómico ou molecular capaz de produzir espécies reativas, as quais aumentam significativamente a cinética de remoção do ligante de peças injetadas. No caso de utilização de uma mistura contendo hidrogênio como gás principal, as espécies reativas são constituídas por hidrogênio atómico e pela molécula de hidrogênio em estado de elevada energia potencial, alem do íon molecular de hidrogênio. As peças (1) a serem processadas são colocadas no suporte (2) no interior do forno (3), onde o conjunto é envolvido pelo plasma (6). A mistura gasosa é admitida através de (4), sendo os resíduos removidos através da bomba de vácuo (5). No plasma (6) são formadas as espécies reativas descritas acima, as quais são responsáveis pela redução do tempo necessário para extrair o ligante, o qual é da ordem de 10 vezes menor do que o tempo necessário nos principais processos hoje existentes. Alem da redução do consumo de energia e do presente processo ser praticamente não poluente, há um aumento acentuado da produtividade e conseq³ente redução dos custos das peças produzidas através da tecnologia de injeção de pós.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9901512-9A BR9901512A (pt) | 1999-05-27 | 1999-05-27 | Processo de extração por plasma de ligantes |
| DE60005045T DE60005045T2 (de) | 1999-05-27 | 2000-05-23 | Plasmaextraktion von bindemittel in durch pulverspritzgiessen hergestellten formkörpern |
| PCT/BR2000/000057 WO2000073002A1 (en) | 1999-05-27 | 2000-05-23 | Process extraction by plasma of junction in obtained pieces by molding powders by injection |
| EP00936573A EP1230056B1 (en) | 1999-05-27 | 2000-05-23 | Plasma process for removing a binder from parts obtained by powder injection molding |
| US09/980,741 US6579493B1 (en) | 1999-05-27 | 2000-05-23 | Process for removal of binders from parts produced by powder injection molding |
| AT00936573T ATE248677T1 (de) | 1999-05-27 | 2000-05-23 | Plasmaextraktion von bindemittel in durch pulverspritzgiessen hergestellten formkörpern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9901512-9A BR9901512A (pt) | 1999-05-27 | 1999-05-27 | Processo de extração por plasma de ligantes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9901512A true BR9901512A (pt) | 2001-01-09 |
Family
ID=4072276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9901512-9A BR9901512A (pt) | 1999-05-27 | 1999-05-27 | Processo de extração por plasma de ligantes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6579493B1 (pt) |
| EP (1) | EP1230056B1 (pt) |
| AT (1) | ATE248677T1 (pt) |
| BR (1) | BR9901512A (pt) |
| DE (1) | DE60005045T2 (pt) |
| WO (1) | WO2000073002A1 (pt) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0403536B1 (pt) * | 2004-08-06 | 2011-08-23 | reator de plasma industrial para a extração de ligantes assistida por plasma, de peças produzidas por injeção de pós. | |
| BRPI0803774B1 (pt) * | 2008-06-11 | 2018-09-11 | Univ Federal De Santa Catarina Ufsc | processo e reator de plasma para tratamento de peças metálicas |
| EP3436251B1 (en) * | 2016-05-12 | 2023-09-20 | Hewlett-Packard Development Company, L.P. | Post-processing in 3d printing systems |
| CN109070477B (zh) | 2016-07-26 | 2021-04-02 | 惠普发展公司，有限责任合伙企业 | 冷却3d打印系统中的构建材料 |
| DE102019102557A1 (de) * | 2019-02-01 | 2020-08-06 | Volkswagen Aktiengesellschaft | Verfahren zum Herstellen einer Elektrode |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022872A (en) * | 1975-11-12 | 1977-05-10 | Ppg Industries, Inc. | Process for preparing finely-divided refractory powders |
| GB2106142B (en) * | 1981-08-10 | 1985-05-22 | Kennecott Corp | Sintering refractory articles using direct-heated gases |
| US4666775A (en) * | 1985-04-01 | 1987-05-19 | Kennecott Corporation | Process for sintering extruded powder shapes |
| US4619836A (en) * | 1985-12-31 | 1986-10-28 | Rca Corporation | Method of fabricating thick film electrical components |
| US6093761A (en) * | 1999-04-14 | 2000-07-25 | Stanton Advanced Materials, Inc. | Binder system and method for particulate material |
-
1999
- 1999-05-27 BR BR9901512-9A patent/BR9901512A/pt not_active IP Right Cessation
-
2000
- 2000-05-23 EP EP00936573A patent/EP1230056B1/en not_active Expired - Lifetime
- 2000-05-23 AT AT00936573T patent/ATE248677T1/de not_active IP Right Cessation
- 2000-05-23 US US09/980,741 patent/US6579493B1/en not_active Expired - Fee Related
- 2000-05-23 WO PCT/BR2000/000057 patent/WO2000073002A1/en active IP Right Grant
- 2000-05-23 DE DE60005045T patent/DE60005045T2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1230056A1 (en) | 2002-08-14 |
| DE60005045T2 (de) | 2004-06-03 |
| DE60005045D1 (de) | 2003-10-09 |
| WO2000073002A1 (en) | 2000-12-07 |
| EP1230056B1 (en) | 2003-09-03 |
| ATE248677T1 (de) | 2003-09-15 |
| US6579493B1 (en) | 2003-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
| B15K | Others concerning applications: alteration of classification | ||
| B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] | ||
| B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE A 15A ANUIDADE. |
|
| B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2257 DE 08-04-2014 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |