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Process flow of bone china molding

by:Two Eight     2021-08-29
Process flow of ceramic tableware molding:    1. Modeling process: original tyre-reverse tyre-concave tyre-reverse tyre-working tyre-inverted mold-model 2. Chain production process (rolling forming): before machine-blanking-brushing —Inspection—inspection—green billet 3. Single-machine production process (rolling forming): before the machine—preparation—brushing—dipping—inspection—inspection—green billet 4. Manual grouting process (grouting): Manual grouting-demoulding-fur-brush inspection-inspection-green billet 5. Pressure grouting process (grouting forming): mechanical pressure grouting-demoulding-rough-brushing-inspection billet-inspection-green billet 6 、Hot pressure injection molding: direct mechanical molding-brushing-first kiln-inspection-second kiln-repair-third kiln-blank (bones)    (adding to the raw material of hot pressure injection molding 18% paraffin wax is added, which is conducive to product molding. The first time it enters the kiln is to use aluminum powder to remove the wax in the product; the second time is to remove the aluminum powder; the third time to enter the kiln is what we usually call biscuits )    Roll forming: one of the ways of product forming, manual operation with the machine [there are two kinds of single-machine forming and chain drying forming]. The objects of roll forming are circular regular products, such as round flat plates, bowls, soup plates, etc. The production efficiency per unit time of roll forming is higher than that of grouting.   Grouting: The second method of product molding, purely manual operation. The objects of grouting are products of the opposite sex, shape or irregularity, such as teapots, bottles, jars, etc. The production efficiency per unit time of grouting molding is lower than that of roll molding. The room temperature of grouting molding should generally be kept at about 30 degrees, which is conducive to molding. There are currently seven presses in the grouting workshop. The grouting model is used approximately 30 times.   Blank: After the model is formed by rolling or grouting, the product that is dried and separated from the model is referred to as the blank.  Brushing: It is to polish the blank after being separated from the model with a sponge soaked in water (or sandpaper), the purpose is to smooth the surface of the blank after demolding.  Inspection of blanks: Check the blanks one by one after brushing to find unqualified products such as dirty and cracked blanks. Qualified products are called green blanks. The molding of the product cannot be separated from the model. The main material of the model is gypsum. The production process is to make the original tire according to a certain proportion of the customer-supplied samples or drawings (the production cycle of the original tire is determined by the shape of the product. The flat part is one working day and the three-dimensional 3 working days), and then the original tyre is used to make the working tyre, and finally the working tyre is returned to the model. The production process of conventional products takes about 2 working days. After the model is made, it is damp, so the model needs to be dried before it can be used. It takes 2-3 working days to dry the model. If the order product is urgent, overtime can be used to shorten the model production cycle. When receiving the proofing order, the salesperson must consider the existing product proofing cycle of the development department before deciding the delivery date to the customer. The use times of the rolled model tires were 225 times for dry embryos and 120 times for wet embryos; the use times of grouting model tires were 225 times for dry embryos and 110 times for wet embryos. The moisture content of the model after drying is 5%. The production process of the model is: new product-make the original tire according to the scale-make the concave tire according to the original tire-make the working tire according to the concave tire-model.
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