JPH0247432B2 - - Google Patents
Info
- Publication number
- JPH0247432B2 JPH0247432B2 JP56088725A JP8872581A JPH0247432B2 JP H0247432 B2 JPH0247432 B2 JP H0247432B2 JP 56088725 A JP56088725 A JP 56088725A JP 8872581 A JP8872581 A JP 8872581A JP H0247432 B2 JPH0247432 B2 JP H0247432B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- cement
- glaze
- water
- molded body
- 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 - Lifetime
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- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【発明の詳細な説明】
本発明はホウロウ引きセメント成形体の製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an enameled cement molded body.
セメント製品は、吸水率が高く、セメント製瓦
等においては、耐吸水性付与のための処理が必要
である。而して、セメント製瓦の表面にホウロウ
を焼成することができれば、吸水性の問題を解消
できるばかりか、その外観も向上でき有利であ
る。 Cement products have a high water absorption rate, and cement tiles and the like require treatment to impart water absorption resistance. If enamel could be baked on the surface of cement tiles, it would be advantageous not only to solve the problem of water absorption but also to improve the appearance.
ところで、ホウロウを焼付けるためには、800
〜900℃の加熱が必要であり、かゝる高温下では
セメントの結晶水が飛散し、セメントの強度低下
が避けられない。しかし、かゝる強度低下は、上
記高温加熱後、セメント製品を直に水中浸漬すれ
ば、相当に回復し、その強度を上記高温加熱前の
60〜70％に確保できることを、本発明者等は既に
確認ずみである。 By the way, in order to burn enamel, it costs 800
Heating to ~900°C is required, and at such high temperatures, water of crystallization in the cement will scatter, unavoidably reducing the strength of the cement. However, if the cement product is directly immersed in water after the above-mentioned high-temperature heating, such strength loss can be recovered to a considerable extent, and the strength will be improved to the level before the above-mentioned high-temperature heating.
The present inventors have already confirmed that it is possible to maintain a ratio of 60 to 70%.
かゝる確認に基づき、本発明者等はセメント製
品のホウロウ引きに関し、種々の検討を行つてき
たが、セメント製品のホウロウ引き特有の問題の
一つとして、焼成時に釉とび、釉めくれが発生し
易いことを知つた。 Based on such confirmation, the present inventors have conducted various studies regarding enameling of cement products, and found that one of the problems peculiar to enameling of cement products is that glaze skipping and glaze peeling occur during firing. I learned that it is easy to do.
本発明に係るホウロウ引きセメント成形体の製
造方法は、上記釉とび、釉めくれを防止してホウ
ロウ釉薬を焼成することを可能とする方法であ
り、発泡骨材を３〜10重量％配合したセメント組
成物に15〜20重量％の水を添加した基材を成形
し、該成形体表面にホウロウ釉薬を施釉し、これ
を焼成し、而るのち、水中浸漬することを特徴と
する方法である。 The method for producing an enameled cement molded body according to the present invention is a method that makes it possible to fire an enameled glaze while preventing the glaze from skipping or turning over. This method is characterized by molding a base material with 15 to 20% by weight of water added to the composition, applying enamel glaze to the surface of the molded product, firing it, and then immersing it in water. .
本発明において発泡骨材を配合する理由は、成
形体の吸水率を高め、ホウロウ釉薬を成形体表面
によく吸い込ませ、釉薬と成形体との密着性を高
めるためである。この発泡骨材の配合量を３〜10
重量％とした理由は３重量％以下では、上記効果
を満足に達成できず、10重量％以上では焼成後の
製品強度が不足するからである。 The reason why foamed aggregate is blended in the present invention is to increase the water absorption rate of the molded body, to allow the enamel glaze to be well absorbed into the surface of the molded body, and to improve the adhesion between the glaze and the molded body. The blending amount of this foamed aggregate is 3 to 10.
The reason why it is set at 3% by weight is that if it is less than 3% by weight, the above effect cannot be achieved satisfactorily, and if it is more than 10% by weight, the strength of the product after firing will be insufficient.
本発明において、基材の含水量を15〜20重量％
に限定した理由は、20重量％以上では、成形性が
悪く、また成型後の製品の含水率も高いため、上
記釉薬の成形体表面への吸い込みが低下し、15重
量％以下では、基材が造粒し易く、成形性が低下
するからである。 In the present invention, the water content of the base material is 15 to 20% by weight.
The reason for limiting the glaze to 20% by weight or more is that moldability is poor and the moisture content of the product after molding is high, reducing the suction of the glaze to the surface of the molded product. This is because it is easy to granulate and the moldability is reduced.
本発明において使用する基材の固形分の配合
は、セメント：15〜50重量％、ベントナイト：１
〜10重量％、安山岩：30〜81重量％、発泡骨材：
３〜10重量％であり、発泡骨材には、通常パーラ
イト、シラスバルーン等を使用する。市販のパー
ライトには、東邦パーライト、三井パーライト加
工用１号、SK−ライト、スカーライト０号等が
ある。 The solid content of the base material used in the present invention is cement: 15 to 50% by weight, bentonite: 1
~10% by weight, Andesite: 30-81% by weight, Foamed aggregate:
It is 3 to 10% by weight, and perlite, shirasu balloons, etc. are usually used as the foamed aggregate. Commercially available pearlite includes Toho Pearlite, Mitsui Pearlite No. 1 for processing, SK-Lite, and Scarlite No. 0.
上記基材の一部として、ベントナイト、安山岩
等を使用する理由は、焼成後、水中浸漬による強
度回復率の向上に有効であるからである。 The reason why bentonite, andesite, etc. are used as part of the base material is that they are effective in improving the strength recovery rate by immersion in water after firing.
本発明においてホウロウ釉薬には、顔料並びに
増量剤を融点400〜600℃のホウロウ粉末に添加し
た主剤：100重量部、水：50〜80重量部、増粘剤
（CMC）：0.1〜2.0重量部の組成のものを使用でき
る。 In the present invention, the enamel glaze includes: 100 parts by weight of the main ingredient, which is made by adding pigments and extenders to enamel powder with a melting point of 400 to 600°C, 50 to 80 parts by weight of water, and 0.1 to 2.0 parts by weight of thickener (CMC). can be used.
以下、本発明を実施例について説明する。 Hereinafter, the present invention will be described with reference to examples.
実施例、並びに比較例において使用したホウロ
ウ釉薬は、上記した主剤：100重量部、水：70重
量部、増粘剤：1.0重量部の組成である。 The enamel glaze used in Examples and Comparative Examples had a composition of 100 parts by weight of the above-mentioned main ingredient, 70 parts by weight of water, and 1.0 part by weight of thickener.
実施例 １
セメント：35重量％、ベントナイト：５重量
％、安山岩：57重量％、発泡骨材（スカーライト
０号）：３重量％からなる組成物を15重量％の水
で混練し、これを厚み10mmの板状に成形し、この
成形体を300℃で15分間前乾繰し、次いで、施釉
し、300℃で15分間乾燥したのち、850℃、20分で
焼成し、この焼成後直に、10分間水中浸漬した。Example 1 A composition consisting of cement: 35% by weight, bentonite: 5% by weight, andesite: 57% by weight, and foamed aggregate (Scarlite No. 0): 3% by weight was kneaded with 15% by weight of water, and this was mixed. The molded body was formed into a plate shape with a thickness of 10 mm, pre-dried at 300℃ for 15 minutes, then glazed and dried at 300℃ for 15 minutes, then fired at 850℃ for 20 minutes. It was immersed in water for 10 minutes.
実施例 ２
セメント：30重量％、ベントナイト：５重量
％、安山岩：59重量％、発泡骨材：６重量％から
なる組成物を使用した以外、実施例１と同様とし
た。Example 2 The same as Example 1 was used except that a composition consisting of cement: 30% by weight, bentonite: 5% by weight, andesite: 59% by weight, and foamed aggregate: 6% by weight was used.
実施例 ３
セメント：25重量％、ベントナイト：５重量
％、安山岩：60重量％、発泡骨材：10重量％から
なる組成物を使用した以外、実施例１と同様にし
た。Example 3 The same procedure as in Example 1 was carried out except that a composition consisting of 25% by weight of cement, 5% by weight of bentonite, 60% by weight of andesite, and 10% by weight of foamed aggregate was used.
比較例
セメント：30重量％、ベントナイト：５重量
％、安山岩：65重量％であつて、発泡骨材無添加
の組成物を使用した以外、実施例１と同様にし
た。Comparative Example The same procedure as Example 1 was carried out except that a composition containing 30% by weight of cement, 5% by weight of bentonite, and 65% by weight of andesite and no foamed aggregate was used.
上記実施例品、並びに比較例品について、ホウ
ロウ層の外観を観察したところ、比較例品におい
ては、釉とび、釉めくれが顕著であつたが実施例
２、実施例３のものにおいては、釉とび、釉めく
れは存在しなかつた。実施例１のものにおいて
は、やゝ釉とびが観られたが、比較例品に較べ、
その外観は極めて良好であつた。 When the appearance of the enamel layer was observed for the above-mentioned example products and comparative example products, it was found that glaze skipping and glaze peeling were noticeable in the comparative example products, but in the examples 2 and 3, the glaze There were no cracks or peeling of the glaze. In Example 1, some glaze skipping was observed, but compared to the comparative example,
Its appearance was extremely good.
上述した通り、本発明によれば、セメント製品
に釉とび、釉めくれのない外観良好なホウロウ引
きを施すことができ、しかもセメント製品の強度
も充分に確保できる（例えば、焼成なしのセメン
ト瓦の曲げ破壊荷重350〜360Kgに対し、本発明に
よりホウロウ引きしたものの曲げ破壊荷重は、
230〜250Kgである）。 As described above, according to the present invention, cement products can be enameled with a good appearance without glaze skipping or glaze peeling, and the strength of the cement products can also be ensured sufficiently (for example, cement products without firing can be enameled). Compared to the bending failure load of 350 to 360 kg, the bending failure load of the enameled product according to the present invention is
230-250Kg).
Claims (1)
成物に15〜20重量％の水を添加した基材を成形
し、該成形体表面にホウロウ釉薬を施釉し、これ
を焼成し、而るのち水中浸漬することを特徴とす
るホウロウ引きセメント成形体の製造方法。1 A base material made by adding 15 to 20 weight % of water to a cement composition containing 3 to 10 weight % of foamed aggregate is molded, an enamel glaze is applied to the surface of the molded body, and this is fired. A method for producing an enameled cement molded body, which is characterized by subsequent immersion in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8872581A JPS57205388A (en) | 1981-06-08 | 1981-06-08 | Manufacture of enameled cement moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8872581A JPS57205388A (en) | 1981-06-08 | 1981-06-08 | Manufacture of enameled cement moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57205388A JPS57205388A (en) | 1982-12-16 |
| JPH0247432B2 true JPH0247432B2 (en) | 1990-10-19 |
Family
ID=13950880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8872581A Granted JPS57205388A (en) | 1981-06-08 | 1981-06-08 | Manufacture of enameled cement moldings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57205388A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650182A (en) * | 1979-09-26 | 1981-05-07 | Kubota Ltd | Manufacture of enameled cementitious board |
-
1981
- 1981-06-08 JP JP8872581A patent/JPS57205388A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57205388A (en) | 1982-12-16 |
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