中空粘土レンガ製作の注意事項

夏に, with the change of climate, the moisture content in raw materials fluctuates, so pay close attention to the change of moisture content in production. When the moisture content is low, it is necessary to add water to the raw material in time to make it reach the moisture required for molding. When the moisture content in the raw material is too high, it is necessary to properly reduce the moisture content in the raw material. It can be reduced by adding some dry materials to the raw material, such as dry fly ash, 石炭ギャング, スラグ, tailings of other mines and other industrial waste slag. When adding these components into the raw material, it is necessary to select the right time and specify the adding position. It must be added at the crushing position of the raw material. この上, the added components can form a good mixture with the main components of the raw material to make the performance of the raw material uniform. If the adding time is too late, 原材料が壊れた後に追加します, いくつかの材料を完全に混合することができないため、原材料の性能は均一ではありません, 成形作業がスムーズに行えない. あれは, フォーミングを行うことができます, しかし、成形されたグリーンボディの品質も非常に不安定です. 原料に加水する場合, 水を加える時間にも注意が必要です. It is necessary to add 98%~100% of the water required for raw material molding when raw materials are broken and crushed, so that the water content of raw materials can meet the requirements of molding water. Don’t wait until the raw material enters the extruder to add water, which is too late to ensure that the added water is evenly dispersed in the raw material, and the water content on the surface and inside of the particles will also be greatly different, 原材料の性能の一貫性を助長しない, 成形品と素地の性能に一定の害を及ぼす可能性があります。.

機械口の潤滑水に関して, 加える水の量にも注意が必要です. 正常な成形を確保した状態で, 水はできるだけ少なくする必要があります. 水量を増やして成形することもできますが、, これにより、素地の表面が水分を吸収しすぎます。, which will have a certain impact on the drying process of the green body and the uniformity of the green body performance. It is inevitable to form delamination phenomenon in the forming body by using the screw extruder, which is generally called spiral striation. This texture (layering) is formed by the uneven extrusion of mud from the machine mouth section through the spiral blade. When raw materials are formed into mud strips, we hope to increase the density of the green body by the close combination of particles, 潤滑剤の効果ではなく. 原材料の最密充填の原則によると, 粗中の各成分の割合, 原材料の中・微粒子は、 “両端が大きく、真ん中が小さい”, グリーンボディの密度は最大です, あれは, 粒子は最も密なパッキングに達することができます. 1 つの粒子サイズのすべての粒子が良好な成形効果を達成することはできません, そして、各成分の割合がバランスを崩している場合, 良好な成形効果を達成できません, 成形時にデラミネーションが発生しやすい.