Terracotta Wall Louver, as a building decoration material, not only has the advantages of compact structure, good freeze-thaw resistance, acid and alkali resistance, abrasion resistance and smooth and clean appearance, but also has the decorative effect of rich colors and beautiful appearance. Terracotta Wall Louver is generally sintered into products in a tunnel kiln or roller kiln. The firing temperature is generally as high as 1200℃. Obviously Terracotta Wall Louver belongs to the category of porcelain vitrified tiles, so it is very smooth and clean, without deformation and micro cracks. Other defects, due to compact structure, high physical and mechanical strength and low water absorption. Therefore, although the external structure and working principle are basically similar, the internal structure is still quite different.
According to the extrusion orientation of Terracotta Wall Louver blanks, screw extrusion forming machines can be generally divided into vertical screw extrusion forming machines and horizontal screw extrusion forming machines. However, due to the cutting and conveying of the formed blanks, it is currently widely used Almost all the screw extrusion machines used are horizontal screw extrusion machines. Horizontal screw extrusion molding machines can be generally divided into single-axis screw extrusion molding machines, dual-axis screw extrusion molding machines and three-axis screw extrusion molding machines according to the reamer shaft.
When the three-axis screw extrusion forming machine is working, the upper two mud mixing shafts respectively drive the left-handed reamer and the right-handed reamer to rotate in reverse, which can fully crush, stir, knead and mix the added ceramic mud. It is beneficial to obtain Terracotta Wall Louver body with material distribution tending to be uniform and isotropic, reduce its extrusion forming defects and subsequent drying and sintering deformation cracking of Terracotta Wall Louver body, and obtain Terracotta Wall Louver products. At present, in the production process of Terracotta Wall Louver at home and abroad, the widely used screw extrusion machines are almost all three-axis screw extrusion machines.
