JPS61124088A - Manufacture of hot plate - Google Patents
Manufacture of hot plateInfo
- Publication number
- JPS61124088A JPS61124088A JP24479284A JP24479284A JPS61124088A JP S61124088 A JPS61124088 A JP S61124088A JP 24479284 A JP24479284 A JP 24479284A JP 24479284 A JP24479284 A JP 24479284A JP S61124088 A JPS61124088 A JP S61124088A
- Authority
- JP
- Japan
- Prior art keywords
- sheathed heater
- casting
- mold
- heat
- metal plate
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はシーズヒータを金属板に装着してなる熱板の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a hot plate in which a sheathed heater is attached to a metal plate.
従来シーズヒータは金属板に装着又は鋳込まれて熱板が
構成される。Conventionally, a sheathed heater is attached to or cast into a metal plate to form a hot plate.
一般的に金属板は、タイキャスト鋳造、グラビテイ鋳造
あるいは低圧鋳造などの方法により得られる。Generally, metal plates are obtained by methods such as tie casting, gravity casting, and low pressure casting.
第２図に示すように、シーズヒータ（２）は金属板（１
）内に鋳込まれている。As shown in Figure 2, the sheathed heater (2) is a metal plate (1
) is cast inside.
しかしながら、熱板を作る鋳造工程では、まずシーズヒ
ータ（２）ヲ作り曲げ加工などを施しｔもの全鋳造する
ことから連続化して長期間の間隔が必要となる。However, in the casting process for making the hot plate, first the sheathed heater (2) is made and bent, and then the whole thing is cast, so long intervals are required.
ダイキャスト鋳造の場合は、鋳造時の融解金属の流れが
悪くなり鋳巣やふくれあるいは湯じわ等が生じる問題が
ある。In the case of die casting, there is a problem in that the flow of molten metal during casting is poor, resulting in cavities, blisters, and creases.
鋳造工程において、シーズヒータ（２）はそのシーズヒ
ータ（２）を鋳型にセットしなげねばならず、鋳造コス
トが高くなる問題がある。またシーズヒータ（２）が金
属板（１）の中に固定されているため、完成品に不良が
生じた場合の再生が困難である。In the casting process, the sheathed heater (2) must be set in a mold, which poses a problem of increasing casting cost. Furthermore, since the sheathed heater (2) is fixed within the metal plate (1), it is difficult to reproduce the finished product if it becomes defective.
そこで、第１図に示すように、シーズヒータ（４）は金
属板（３）を成形した後にその金属板（２）の凹溝（５
）に備える方法が用いられている。第１図を参照して、
ダイキャスト鋳造によれば、鋳肌が滑らかで良いが、′
７うヒテイ鋳造によれば、鋳肌が荒くシーズヒータ（４
）と金属板（３）の凹溝（５）との密着が悪くなりノー
ズヒータ（４）の寿命が問題となる。Therefore, as shown in FIG.
) is used. Referring to Figure 1,
According to die casting, the casting surface is smooth and good, but
7 According to Uhitei Casting, the casting surface is rough and the sheathed heater (4
) and the concave groove (5) of the metal plate (3) becomes poor, which poses a problem in the life of the nose heater (4).
したがって、シーズヒータ（１）の取付部分は機械加工
によって表面荒さをタイキャスト鋳造なみに保持してい
るが、そのために加工コストが高くなるとともに、生産
性も悪いため、高品化には多くの問題がある。Therefore, the mounting part of the sheathed heater (1) is machined to maintain the surface roughness equivalent to that of tie-cast casting, but this increases processing costs and lowers productivity, so many steps are required to achieve high quality. There's a problem.
それ故に、本考案の目的はシーズヒータを装着する金属
板の凹溝の機械加工を行なうことなくシーズヒータを後
付けする熱板の製造方法を提供することにある。Therefore, an object of the present invention is to provide a method of manufacturing a hot plate in which a sheathed heater can be retrofitted without machining the grooves of the metal plate to which the sheathed heater is attached.
本考案によれば鋳型に耐熱塗料を塗布し、さらにその塗
布された鋳型面のシーズヒータ装着用部分の耐熱塗料を
他の鋳型面の塗布部分より滑らかに研摩した後に金属全
加熱融解して液状にし定融解金属を流し込み、冷却後に
作られた金属板のシーズヒータ装着部分全機械加工等の
後加工せずにシーズヒータを装着してなる熱板の製造方
法が得られる。According to the present invention, a heat-resistant paint is applied to the mold, and the heat-resistant paint on the part of the mold surface where the sheathed heater is attached is polished smoother than the other parts of the mold surface, and then the metal is fully heated and melted to form a liquid. A method for manufacturing a hot plate is obtained in which a sheathed heater is attached to the metal plate without any post-processing such as machining of the sheathed heater attachment part of the metal plate produced after pouring constant molten metal.
第１図の従来例で示した熱板を用いて以下に本発明を説
明する。The present invention will be explained below using the hot plate shown in the conventional example of FIG.
金属板（３）は鋳型の空間部に金属を加熱融解して液状
にした融解金属全流し込み冷却して固まってから、それ
を取り出して作られる。この際、クラビテイ鋳造の場合
、鋳肌の荒さば鋳型に塗布される耐熱塗料面の荒さによ
って決まる。そこで鋳型面を滑らかに研摩し、粒子を細
かくして、その後にその鋳型に耐熱塗料を塗布する。シ
ーズヒータ（４）を装着するための金属板（３）の凹溝
（５＋は、その凹溝（５）の内部の塗膜をサンドペーパ
ーなどの研摩冶具音用いて滑らかに仕上げらねる。その
後に鋳造が行なわれると滑らかな鋳肌が得られる。これ
によればダイキャスト鋳造と同等の金属板（３）が得ら
れ、シーズヒータ（４）を金属板（３１の凹溝（５）に
装着が行なわれる。The metal plate (3) is made by pouring all of the molten metal that has been heated and melted into a liquid state into the space of a mold, cooling and solidifying it, and then taking it out. In the case of Clavitai casting, the roughness of the casting surface is determined by the roughness of the heat-resistant paint surface applied to the mold. Therefore, the mold surface is ground smooth to make the particles finer, and then a heat-resistant paint is applied to the mold. The concave groove (5+) of the metal plate (3) for mounting the sheathed heater (4) is finished by smoothing the coating film inside the concave groove (5) using a polishing tool such as sandpaper. A smooth casting surface is obtained when casting is carried out. According to this method, a metal plate (3) equivalent to die-casting is obtained, and the sheathed heater (4) is placed in the groove (5) of the metal plate (31). Installation is performed.
鋳型面に塗布された耐熱塗料は融解金属の流動性を良く
する役割りを持ち、鋳型面に接しｔ融解金属が急冷開化
することなく末端まで流れ込み、いわゆるン丑−トモー
ルドや鋳巣の不良発生を防ぐ重要な役割りを負っている
。The heat-resistant paint applied to the mold surface has the role of improving the fluidity of the molten metal, and when it comes into contact with the mold surface, the molten metal flows to the end without rapidly cooling and opening, which prevents the occurrence of so-called dead molds and mold defects. We have an important role to play in preventing this.
第１図に示すようにシーズヒータ（４）全加締め等の後
付けを行なうための凹溝（５）とその両側の凸状のリブ
によって、他の部分よシ偏肉する之め、鋳造１時の融解
金属の固化が遅れ、その周囲が先に固化するため、この
シーズヒータ（４）装着部付近にヒケや鋳巣が発生して
鋳造不良となるような事が防げる。As shown in Figure 1, the thickness of the sheathed heater (4) is uneven due to the concave groove (5) for retrofitting the sheathed heater (4) and the convex ribs on both sides. Since the solidification of the molten metal is delayed and the surrounding area solidifies first, it is possible to prevent sink marks and cavities from occurring in the vicinity of the sheathed heater (4) mounting portion, which would result in poor casting.
即ち、このようにシーズヒータ（４）装着部付近の固化
遅れをなくし、他の部分との固化、スピードバランスを
保つためには、鋳型表面に塗布する耐熱塗料の断熱性を
弱める。つまシ塗料厚さを薄くして調整することによっ
て鋳型への熱伝導が、良くなり、冷却効果が増すために
固化順が均一化しバランスが保たれるようになり、鋳造
不良が防げる。That is, in order to eliminate the solidification delay in the vicinity of the sheathed heater (4) attachment part and to maintain solidification and speed balance with other parts, the heat-insulating properties of the heat-resistant paint applied to the mold surface are weakened. By thinning and adjusting the thickness of the brush paint, heat conduction to the mold is improved, and the cooling effect is increased, so the solidification order becomes uniform and balanced, and casting defects are prevented.
以上本発明によれば、シーズヒータ装着部の耐熱塗料を
他の部分より滑らかＶＣ研摩する工程は、塗膜厚を調整
する事になシ、不良発生の堕止効果と、機械加工が不要
になるためコストダウン？兼ね、且つシーズヒータの曲
げ形状にとられハ、ることなく金属板に装着でき、温度
分布の大巾な向上が計れる。As described above, according to the present invention, the process of VC polishing the heat-resistant paint on the sheathed heater mounting part to make it smoother than other parts does not require adjusting the paint film thickness, has the effect of reducing the occurrence of defects, and eliminates the need for machining. Cost reduction? In addition, it can be attached to a metal plate without being affected by the bent shape of the sheathed heater, and the temperature distribution can be greatly improved.
第１図は従来のと本発明を共に示した熱板を示す斜視断
面図、第２図は、従来の熱板を示す断面図である。
（１１・・・金属板 （２）・・・シーズヒータ （
３）・・金属板（４）・・・シーズヒータ （５）
・・・凹溝。
実用新案登録出願人
日本電熱株式会社FIG. 1 is a perspective sectional view showing a conventional heating plate and a heating plate according to the present invention, and FIG. 2 is a sectional view showing a conventional heating plate. (11...Metal plate (2)...Sheathed heater (
3)...Metal plate (4)...Sheathed heater (5)
...concave groove. Utility model registration applicant Nippon Dentsu Co., Ltd.
Claims (1)
型面のシーズヒータ装着用部分の耐熱塗料を他の鋳型面
より滑らかに研摩した後に、金属を加熱融解して液状に
した融解金属を流し込み、冷却後に作られた金属板のシ
ーズヒータ装着用部分を機械加工等の後加工させずにシ
ーズヒータを装着してなる熱板の製造方法。1) Apply a heat-resistant paint to the mold, and then polish the applied heat-resistant paint on the part of the mold surface where the sheathed heater is attached to make it smoother than on other mold surfaces, and then heat and melt the metal to make it liquid. A method for manufacturing a hot plate in which a sheathed heater is attached to a sheathed heater attachment part of a metal plate made after pouring and cooling without performing post-processing such as machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24479284A JPS61124088A (en) | 1984-11-20 | 1984-11-20 | Manufacture of hot plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24479284A JPS61124088A (en) | 1984-11-20 | 1984-11-20 | Manufacture of hot plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124088A true JPS61124088A (en) | 1986-06-11 |
| JPH0426198B2 JPH0426198B2 (en) | 1992-05-06 |
Family
ID=17123996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24479284A Granted JPS61124088A (en) | 1984-11-20 | 1984-11-20 | Manufacture of hot plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61124088A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021890A (en) * | 1997-07-31 | 2000-01-21 | Toshiba Ceramics Co Ltd | Carbon heater |
| JP2002151237A (en) * | 1997-07-31 | 2002-05-24 | Toshiba Ceramics Co Ltd | Carbon heater |
| JP2008243820A (en) * | 1997-07-31 | 2008-10-09 | Covalent Materials Corp | Carbon heater |
-
1984
- 1984-11-20 JP JP24479284A patent/JPS61124088A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021890A (en) * | 1997-07-31 | 2000-01-21 | Toshiba Ceramics Co Ltd | Carbon heater |
| JP2002151237A (en) * | 1997-07-31 | 2002-05-24 | Toshiba Ceramics Co Ltd | Carbon heater |
| JP2008243820A (en) * | 1997-07-31 | 2008-10-09 | Covalent Materials Corp | Carbon heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426198B2 (en) | 1992-05-06 |
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