JPH03215368A - Degreasing of injection molded article - Google Patents
Degreasing of injection molded articleInfo
- Publication number
- JPH03215368A JPH03215368A JP2011084A JP1108490A JPH03215368A JP H03215368 A JPH03215368 A JP H03215368A JP 2011084 A JP2011084 A JP 2011084A JP 1108490 A JP1108490 A JP 1108490A JP H03215368 A JPH03215368 A JP H03215368A
- Authority
- JP
- Japan
- Prior art keywords
- degreasing
- molded article
- injection molded
- ceramic
- jig
- 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.)
- Granted
Links
- 238000005238 degreasing Methods 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 9
- 238000007872 degassing Methods 0.000 abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、押出・射出成形体の脱脂方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for degreasing extrusion/injection molded articles.
本発明は、押出・射出成形体を加熱して脱脂する際に、
成形体の収納治具に多孔質セラミノクスを用い、均一な
脱ガス、温度分布、熱拡散を可能にする方法である．
〔従来の技術〕
従来、成形体の脱脂方法として、第２図の斜視図に示す
ようにアルミナ等の粉末３の中に成形体２を挿入し、脱
脂する方法（粉中脱脂）や、第３図の斜視図に示すよう
に緻密セラミックス治具５に成形体を収納し脱脂する方
法等がある。In the present invention, when heating and degreasing an extrusion/injection molded article,
This method uses porous ceramics as a storage jig for molded objects, and enables uniform degassing, temperature distribution, and heat diffusion. [Prior Art] Conventionally, methods for degreasing a molded body include a method in which the molded body 2 is inserted into a powder 3 such as alumina and degreased (degreasing in powder), as shown in the perspective view of FIG. As shown in the perspective view of FIG. 3, there is a method of storing the molded body in a dense ceramic jig 5 and degreasing it.
従来の粉中脱脂では確かに均一な脱ガス、温度分布は得
られるが、その程度は低くかつ取扱いが不便であった。Although conventional degreasing in powder certainly provides uniform degassing and temperature distribution, the degree of degassing and temperature distribution is low, and handling is inconvenient.
また緻密セラミックス治具を用いる場合、取扱い上、簡
便であるが、成形体と治具の接触面で脱ガス、熱拡散が
悪いため、脱脂後、不良品が多発した。Furthermore, when using a dense ceramic jig, although it is easy to handle, degassing and heat diffusion are poor at the contact surface between the compact and the jig, resulting in a large number of defective products after degreasing.
本発明は成形体の全体が均一な脱ガス、かつ、加熱され
る温度分布を平坦にし、さらに成形体の取扱いが簡便で
ある脱脂方法を提供することを目的とする。It is an object of the present invention to provide a degreasing method in which the entire molded body is degassed uniformly, the heating temperature distribution is flat, and the molded body is easy to handle.
本発明は、気孔率５〜２０％の多孔質セラミックスを成
形体の収納治具にし脱脂する．
〔作用〕
多孔質セラミンクス収納治具を用い脱脂することで、成
形体の脱ガス、熱拡散を均一にし、その効果は粉中脱脂
より大きく、又、取扱いも簡便になる。In the present invention, porous ceramics with a porosity of 5 to 20% is used as a storage jig for molded bodies for degreasing. [Function] By degreasing using a porous ceramic storage jig, degassing and thermal diffusion of the molded body are made uniform, the effect is greater than degreasing in powder, and handling is also easier.
第１図囚，Ｄは、本発明に用いたアルミナ多孔質収納治
具の斜視図である。同図囚に示す如く、成形体２を多孔
質収納治具ｌの溝１゛中に設置し、実際には同図Ｄの如
く、段々重ねにし脱脂炉に入れ脱脂する。FIG. 1D is a perspective view of the alumina porous storage jig used in the present invention. As shown in the figure, the molded bodies 2 are placed in the grooves 1 of the porous storage jig 1, and in reality, as shown in the figure D, they are layered in stages and placed in a degreasing furnace to be degreased.
成形体として、アルミナ円柱体を射出成形して、同一条
件で作製したものを用い、同一昇降温プログラムで脱脂
した。その結果、ヒビ、表面剥離等がない良好な脱脂体
を得る確率（１００個中）は、第１図の本発明では１０
０％、第２図の粉中脱脂では９３％、第３図は緻密アル
ミナ治具使用で５０％となった。An alumina cylindrical body was injection molded and produced under the same conditions as the molded body, and degreased using the same temperature increase/decrease program. As a result, the probability (out of 100) of obtaining a good degreased body without cracks, surface peeling, etc. is 10 for the present invention shown in FIG.
0%, 93% when degreasing in powder as shown in Figure 2, and 50% when using a dense alumina jig as shown in Figure 3.
以上説明したように、本発明によれば成形体と治具の接
触面に空気が直接触れる部分が多く、初期の脱ガスを多
孔質体が吸収するため、均一な脱ガス、温度分布、熱拡
散が行われる．又、取扱も簡単で従来に比して優れた脱
脂方法となる．As explained above, according to the present invention, there are many areas where air comes into direct contact with the contact surface between the compact and the jig, and the porous body absorbs the initial degassing, resulting in uniform degassing, temperature distribution, and Diffusion takes place. In addition, it is easy to handle and is a superior degreasing method compared to conventional methods.
第１図（４）．（［３は本発明の脱脂方法に用いる治具
を示す斜視図、第２図は従来の粉中脱脂を示す斜視図、
第３図は従来の緻密セラミックスを用いた治具を示す斜
視図である。
以上Figure 1 (4). ([3 is a perspective view showing the jig used in the degreasing method of the present invention, FIG. 2 is a perspective view showing the conventional degreasing in powder,
FIG. 3 is a perspective view showing a conventional jig using dense ceramics. that's all
Claims (1)
る際に、成形体を多孔質セラミックスよりなる治具に収
納したことを特徴とする射出成形体の脱脂方法。A method for degreasing an extrusion/injection molded article of metal or ceramics, characterized in that the molded article is housed in a jig made of porous ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011084A JPH0780712B2 (en) | 1990-01-19 | 1990-01-19 | Degreasing method for injection molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011084A JPH0780712B2 (en) | 1990-01-19 | 1990-01-19 | Degreasing method for injection molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03215368A true JPH03215368A (en) | 1991-09-20 |
| JPH0780712B2 JPH0780712B2 (en) | 1995-08-30 |
Family
ID=11768110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011084A Expired - Fee Related JPH0780712B2 (en) | 1990-01-19 | 1990-01-19 | Degreasing method for injection molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0780712B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464747A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Novel degreasing furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195062A (en) * | 1984-03-16 | 1985-10-03 | 日本碍子株式会社 | Method of dewaxing ceramic molded body |
| JPH0158633U (en) * | 1987-10-08 | 1989-04-12 |
-
1990
- 1990-01-19 JP JP2011084A patent/JPH0780712B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195062A (en) * | 1984-03-16 | 1985-10-03 | 日本碍子株式会社 | Method of dewaxing ceramic molded body |
| JPH0158633U (en) * | 1987-10-08 | 1989-04-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0780712B2 (en) | 1995-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |