JPH0119037Y2 - - Google Patents
Info
- Publication number
- JPH0119037Y2 JPH0119037Y2 JP2349085U JP2349085U JPH0119037Y2 JP H0119037 Y2 JPH0119037 Y2 JP H0119037Y2 JP 2349085 U JP2349085 U JP 2349085U JP 2349085 U JP2349085 U JP 2349085U JP H0119037 Y2 JPH0119037 Y2 JP H0119037Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure vessel
- furnace
- degreasing
- liquid wax
- present
- 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
Links
- 238000005238 degreasing Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 15
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Landscapes
- Furnace Details (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はセラミツクス粉末と有機バインダーを
加熱混練後、射出成形して得たセラミツクス成形
体を収容する圧力容器が設置された脱脂炉に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a degreasing furnace equipped with a pressure vessel for housing a ceramic molded body obtained by injection molding after heating and kneading ceramic powder and an organic binder.
従来、射出成形されたセラミツクス成形体の脱
脂工程において、圧力容器が設置された脱脂炉の
下部排気構造は第３図のようなものが一般的であ
つた。該構造による脱脂炉で脱脂処理を行つた場
合、熱分解された有機バインダーが水冷ジヤケツ
ト７近傍で凝縮して液状ワックスとなって、水冷
ジャケットと隣接した圧力容器下部に溜まり、蓋
を開けたとき、該液状ワツクスが流れ落ちる。上
述のため、炉の作業性、環境及びメンテナンス等
で大きな問題となつていた。
Conventionally, in the degreasing process of injection-molded ceramic bodies, the lower exhaust structure of a degreasing furnace equipped with a pressure vessel has generally been as shown in FIG. When degreasing is performed in a degreasing furnace with this structure, the thermally decomposed organic binder condenses near the water cooling jacket 7 and becomes liquid wax, which accumulates at the bottom of the pressure vessel adjacent to the water cooling jacket, and when the lid is opened. , the liquid wax flows down. Because of the above, there have been major problems in terms of workability, environment, maintenance, etc. of the furnace.
本考案は、前記の問題点を解決した、即ち液状
ワツクスの溜まりを抑え、炉蓋から流れ落ちるの
を防いだセラミツクス成形体用脱脂炉を提供する
ものである。
The present invention solves the above problems, that is, provides a degreasing furnace for ceramic molded bodies that suppresses the accumulation of liquid wax and prevents it from flowing down from the furnace lid.
即ち、本考案はセラミツクス粉末と有機バイン
ダーを加熱混練後、射出成形して得たセラミツク
ス成形体を収容する圧力容器が設置された脱脂炉
において、該圧力容器と炉蓋の接続部にパツキン
グ保護用水冷ジヤケツトを設け、上記水冷ジヤケ
ツトと隣接した圧力容器の炉蓋近傍から、該圧力
容器内下部にある排気口近傍までテーパーガイド
を設けたことを特徴とする。
That is, the present invention provides a degreasing furnace equipped with a pressure vessel for accommodating a ceramic molded body obtained by heating, kneading, and injection molding ceramic powder and an organic binder, and attaching a packing protector to the joint between the pressure vessel and the furnace lid. The present invention is characterized in that a water-cooled jacket is provided, and a taper guide is provided from the vicinity of the furnace cover of the pressure vessel adjacent to the water-cooled jacket to the vicinity of the exhaust port located in the lower part of the pressure vessel.
脱脂工程に生ずる排気ガス中に、有機バインダ
ーの揮発物が多量に含まれているが、ほとんどの
ものは排気口より炉外に放出される。ところが、
炉蓋近傍の熱分解された有機バインダーが冷却さ
れ凝縮し液状ワツクスとなる。本発明によれば、
上述のテーパーガイドにより上記の液状ワツクス
が炉蓋近傍に溜まることなく、排気口に誘導され
炉外へ放出される。 The exhaust gas generated during the degreasing process contains a large amount of organic binder volatile matter, but most of it is released outside the furnace through the exhaust port. However,
The pyrolyzed organic binder near the furnace lid is cooled and condensed to form liquid wax. According to the invention,
Due to the above-mentioned taper guide, the above-mentioned liquid wax is guided to the exhaust port and discharged out of the furnace without accumulating near the furnace lid.
次に本考案を図面により説明する。第１図は本
考案に係るセラミツクス成形体用脱脂炉の一実施
例を示す断面図である。第２図は、本考案の圧力
容器下部の拡大断面図で、第３図は、従来の圧力
容器下部の拡大断面図である。 Next, the present invention will be explained with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a degreasing furnace for ceramic molded bodies according to the present invention. FIG. 2 is an enlarged sectional view of the lower part of the pressure vessel of the present invention, and FIG. 3 is an enlarged sectional view of the lower part of the conventional pressure vessel.
即ち、圧力容器１内において、熱分解された有
機バインダーは水冷ジヤケツト７により冷却され
凝縮して液状ワツクス１１が水冷ジヤケツト７近
傍に付着する。上記液状ワツクスの量が増加する
とテーパーガイド５に沿つて排気口４に向つて流
れ、圧力容器１内に液状ワツクス１１が溜まるの
を防ぐ構造となつている。 That is, in the pressure vessel 1, the thermally decomposed organic binder is cooled and condensed by the water-cooled jacket 7, and the liquid wax 11 is deposited near the water-cooled jacket 7. When the amount of the liquid wax increases, it flows toward the exhaust port 4 along the tapered guide 5, thereby preventing the liquid wax 11 from accumulating in the pressure vessel 1.
本考案による液状ワツクス流出防止用テーパー
ガイドを設けることにより、圧力容器内に液状ワ
ツクスの溜まりがなくなり、炉の作業性、環境及
びメンテナンスの向上化の面で、極めて有効であ
る。
By providing the tapered guide for preventing liquid wax from flowing out according to the present invention, there is no accumulation of liquid wax in the pressure vessel, which is extremely effective in improving the workability, environment, and maintenance of the furnace.
本考案を実施例により説明する。第１図に示す
脱脂炉において、電気容量10kw、圧力容器内寸
法が直径φ400mm、奥行き600mmの構造をもつ炉
に、ポリマーとワツクスが30重量％含まれるアル
ミナ質成形体、12Kg挿入した。上記脱脂炉を大気
雰囲気中、５Kg／cm2の圧力を該容器に加えなが
ら、昇温速度10℃／Hr保持温度600℃保持時間１
時間、冷却速度10℃／Hrの条件にて操炉した。
操炉後、従来のテーパーガイドがない場合、蓋を
開けたとき液状ワツクスが流出落下しその量は、
約2.5Kgにも達していたのに対し、本考案に係る
テーパーガイドを設けたものは、操炉中逐次液状
ワツクスが排気口から排気され、操炉後では、圧
力容器下部表面に少量付着していたのみで、液状
ワツクスの流出が全くなかつた。
The present invention will be explained by way of examples. In the degreasing furnace shown in Figure 1, 12 kg of an alumina molded body containing 30% by weight of polymer and wax was inserted into the furnace, which had an electrical capacity of 10 kW and a pressure vessel with internal dimensions of φ400 mm in diameter and 600 mm in depth. The above degreasing furnace was placed in an air atmosphere while applying a pressure of 5 kg/cm 2 to the container, at a temperature increase rate of 10°C/Hr, a holding temperature of 600°C, and a holding time of 1.
The furnace was operated at a cooling rate of 10°C/Hr.
After operating the furnace, if there is no conventional taper guide, when the lid is opened, liquid wax will flow out and fall, and the amount will be
On the other hand, with the tapered guide according to the present invention, liquid wax was gradually exhausted from the exhaust port during furnace operation, and after operation, a small amount of wax adhered to the lower surface of the pressure vessel. There was no leakage of liquid wax.
上述のように、本考案によれば圧力容器内に液
状ワツクスが溜まることなく、操炉中遂次炉内に
放出されるため、脱脂炉の作業性、周囲環境及び
メンテナンスの面で極めて大きな効果がみられ
た。本考案は今後のフアインセラミツクス産業が
伸びる中で、産業上の期待は大きい。
As mentioned above, according to the present invention, liquid wax does not accumulate in the pressure vessel and is released into the furnace during operation, resulting in extremely large effects in terms of workability, surrounding environment, and maintenance of the degreasing furnace. was seen. This invention has great industrial expectations as the fine ceramics industry continues to grow.
第１図は、本考案に係るセラミツクス成形体用
脱脂炉の一実施例を示す断面図である。第２図
は、本考案の圧力容器下部の拡大断面図で、第３
図は、従来の圧力容器下部の拡大断面図である。
１……圧力容器、２……断熱材、３……ガス導
入口、４……排気口、５……テーパーガイド、６
……パツキング、７……水冷ジヤケツト、８……
ヒーター、９……蓋、１０……圧力容器フラン
ジ、１１……液状ワツクス。
FIG. 1 is a sectional view showing an embodiment of a degreasing furnace for ceramic molded bodies according to the present invention. Figure 2 is an enlarged sectional view of the lower part of the pressure vessel of the present invention;
The figure is an enlarged sectional view of the lower part of a conventional pressure vessel. 1...Pressure vessel, 2...Insulating material, 3...Gas inlet, 4...Exhaust port, 5...Taper guide, 6
...Packing, 7...Water cooling jacket, 8...
Heater, 9...lid, 10...pressure vessel flange, 11...liquid wax.
Claims (1)
後、射出成形して得たセラミツクス成形体を収容
する圧力容器が設置された脱脂炉において、該圧
力容器と炉蓋の接続部にパツキング保護用水冷ジ
ヤケツトを設け、上記水冷ジヤケツトと隣接した
圧力容器の炉蓋近傍から、該圧力容器内下部にあ
る排気口近傍までテーパーガイドを設けたことを
特徴とするセラミツクス成形体用脱脂炉。 In a degreasing furnace equipped with a pressure vessel for accommodating a ceramic molded body obtained by heating and kneading ceramic powder and an organic binder and then injection molding, a water-cooled jacket for packing protection is provided at the connection between the pressure vessel and the furnace lid, A degreasing furnace for ceramic molded bodies, characterized in that a tapered guide is provided from the vicinity of the furnace lid of the pressure vessel adjacent to the water-cooled jacket to the vicinity of the exhaust port in the lower part of the pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2349085U JPH0119037Y2 (en) | 1985-02-22 | 1985-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2349085U JPH0119037Y2 (en) | 1985-02-22 | 1985-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61141696U JPS61141696U (en) | 1986-09-02 |
| JPH0119037Y2 true JPH0119037Y2 (en) | 1989-06-02 |
Family
ID=30516774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2349085U Expired JPH0119037Y2 (en) | 1985-02-22 | 1985-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0119037Y2 (en) |
-
1985
- 1985-02-22 JP JP2349085U patent/JPH0119037Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61141696U (en) | 1986-09-02 |
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