Silicon carbide extrusion molding production technology

• Main Authors: MA LI, YAN SHUAISHUAI, XU QINLONG, HAO WENHU, HAN YU, GONG ZHIGANG, ZHANG XIA, MA KUN, GONG YANG, BI JIANQIANG, GAO ZHIMIN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

The invention discloses a silicon carbide extrusion molding production technology, and belongs to the technical field of processing of silicon carbide. The silicon carbide extrusion molding productiontechnology comprises the following steps of (1) mixing silicon carbide micro powder A with a D50 value of 35-40 [mu]m and silicon carbide micro powder B with a D50 value of 5.5-6.0 [mu]m fully for 10minutes to obtain mixed silicon carbide micro powder; (2) aging slurry for 24 hours after conducting ball-milling on the mixed silicon carbide micro powder; (3) conducting extrusion molding on the slurry; (4) drying a pipe biscuit in the shade and molding the pipe biscuit; (5) drying the pipe biscuit; and (6) conducting high-temperature sintering on the pipe biscuit to obtain a silicon carbide pipe. According to the silicon carbide extrusion molding technology, the yield of products subjected to extrusion molding is high, the fracture rate of the products can be effectively reduced, the strength of sintered products i