a kind of preparation method of the ceramic cooking with high heat resistance shock resistant

The current invention is related to the ceramic sector, more especially, a form of ceramic cooking with high-heat resistance shock resistanceand preparation technique thereof. Although ceramic cooking has health, practical, and easy cleaning characteristics, it has some flaws including larger rapid heat cycle of temperature difference in use, which may cause cooking device cracking, and poor porcelain degree, and results of a “one in 450 DEG C of inputs, 20 DEG C of water” below.

The innovation offers a sort of preparation technique for ceramic cooking with high-heat resistance shock resistant in order to address these issues. Made ceramic cooking supports the general promotion of quality of products and boasts better thermal shock resistance, porcelain degree, and intensity. Several manufacturing phases—blank preparation, glaze preparation, mold-repared biscuit, biscuiting, glazing, and baking—are part of the preparation approach.

Blank preparation calls for weighing spodumene, kaolin, petalite, worthless porcelain, and bentonite. Clear water, magnetic separators, and then crushing into a clod mix the basic materials. The special importance of materials application in blank formulation is to contain a certain amount of lithia in spodumene, which can improve the thermal shock resistance of the cooking device product, lower sintering temperature, increase density and intensity of the product, and so improve the purity of spodumene. The moisture content of the blank is 21–23%.

Taking parts by weight of spodumene, calcium oxide, magnesia, and kaolin, glazing preparation is mixing them with clear water. Better density and thermal shock resistance arise from a glaze layer produced from the above-mentioned basic materials having a similar expansion coefficient to blank.

Using a standby blank, roll-forming it using roller head machines, biscuit preparation entails glazing it using a leaching glaze process, then baking it via the glazing base substrate. One finds the highest firing temperature between 1270 and 1280 DEG.

Ultimately, the development offers a fresh approach for ceramic cooking with high-heat resistance shock resistant, so enhancing the thermal shock resistance, porcelain degree, and product intensity. This creative technique intends to raise the quality of ceramic cooking appliances and support the domestic ceramics sector and heat-resistant ceramic cooking device manufacturing company technology research and public relations.

The invention focused on manufacturing high qualification rate, high-heat resistance shock resistant ceramic cooking goods. The glaze layer is closely woven and the finished looks consistently. The product exhibits non-split once thermal shock resistance reaching heat exchange in 600 DEG C of inputs, 20 DEG C of water.

The components have spodumene 45 parts by weight, kaolin 38 parts by weight, petalite 8, worthless parts by weight of porcelain 6, and bentonite 7. Combining spodumene with clean water, wet ball grinding, and magnetic separator de-ironing iron removal forms the raw material. Hammering and pugging has split the remaining porcelain. The blank’s moisture content comes at 22%.

Mixed spodumene 78 parts by weight, calcium oxide 5, magnesium 10, and kaolin 7 parts by weight makes the glaze. After that, the glaze is formed mended biscuit using roller head machines applying the delay rolling depression technique. The rolling time makes the original single product 31 seconds long.

Conventional mended biscuit process of home porcelain manufacturing shapes the basic substrate. Biscuiting is done at the regular ceramic kiln set at 820 DEG C. The foundation substrate is shaped for five hours; adsorbing the glaze liquid results in a thickness of 0.4mm.

After that, the product is burned for 17 hours till it reaches 1270 DEG C. The foundation substrate is burned till it forms the completed product ceramic pan during the sintering process.

Comparative studies reveal that petalite addition to the blank reduces sintering qualified rate and thermal shock resistance. Using Fujian Longyan kaolin in the blank reduces plasticity; the density of the result is low, insufficient strength, and easy damage is possible. Poor flatness and flaws in the output result from insufficiently tightly knit glazing layer.