Patent ID: 9718736
Date: 2017-08-01
CPC Classifications: B28B,C04B

Claim:
1. A sintering process for ceramic sheets, consists of the following steps in sequence: a) painting on a mould with a water reducing agent used for demoulding; b) injecting a slurry into the mould to a preset thickness, wherein the slurry is made of petuntze with a particle size smaller than 280 mesh and an adhesive compound with a weight percentage ranging from 1.0% to 4.0%, and a water percentage of the slurry is not more than 30%; c) naturally and completely drying the slurry to form a white body; d) putting the white body into a kiln for biscuit firing, wherein a temperature of the biscuit firing is 1000° C.; e) glazing the white body with a transport glaze to form a green body; f) wherein the step of putting the green body into the kiln, there exist a temperature control of the kiln which consists of the following steps in sequence: g) heating up when a temperature of the kiln ranges from 100 to 400° C., the temperature rise duration ranges from 1 to 2 hours; h) heating up when the temperature of the kiln ranges from 400 to 900° C., the temperature rise duration ranges from 2 to 3 hours; i) heating up when the temperature of the kiln ranges from 900 to 1100° C., the temperature rise duration is longer than 3 hours; j) when the temperature of the kiln ranges from 1100 to 1350° C., controlling the temperature rise duration ranges from 3 to 4 hours; k) when the temperature of the kiln reaches 1350° C., conducting a heat-preservation cooling; l) when the temperature of the kiln falls to 1230 to 1270° C., raising the temperature to 1290 to 1310° C.; m) opening the kiln and taking the product out of the kiln after re-cooling the kiln down to the range from 880 to 920° C.