Dry pressing forming method of Nixing pottery
A technology of dry-press forming and Nixing pottery, applied in ceramic forming machines, manufacturing tools, etc., can solve the problem of uneven density distribution of forming blanks, and achieve the effects of reducing distortion and cracking, improving yield and increasing fluidity.
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Embodiment 1
[0015] 1) Take the east mud and the west mud in a weight ratio of 4:6, mix them, and grind them to 80 mesh to obtain pottery clay powder;
[0016] 2) Add 0.02% by weight of sodium tartrate and 0.01% emulsified silicone oil to the pottery clay powder, add water until the water content is 5%, and mix well to obtain a blank;
[0017] 3) Fill the blank into the metal mold cavity, press it for 10s under the frontal pressure of 15MPa, and obtain the green body of the small teapot (diameter is 25cm, height is 12cm).
Embodiment 2
[0019] 1) Take east mud and west mud in a weight ratio of 1:1, mix them, and grind them to 120 mesh to obtain pottery clay powder;
[0020] 2) Add 0.05% by weight of sodium tartrate and 0.02% emulsified silicone oil to the pottery clay powder, add water until the water content is 10%, and mix well to obtain a blank;
[0021] 3) Fill the blank into the metal mold cavity, and press it for 30s under the frontal pressure of 25MPa to obtain the blank of a medium-sized vase (30cm in diameter and 60cm in height).
Embodiment 3
[0023] 1) Take east mud and west mud and mix them in a weight ratio of 6:4, crush them to 100 mesh, and obtain pottery clay powder;
[0024] 2) Add 0.035% by weight of sodium tartrate and 0.015% emulsified silicone oil to the pottery clay powder, add water until the water content is 8%, and mix well to obtain a blank;
[0025] 3) Fill the blank into the metal mold cavity, and press it for 20s under the frontal pressure of 20MPa to obtain the green body of a large vase (55cm in diameter and 100cm in height).
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