Customized Assembly Crystallizer for Continue Casting Machine

Composed of four composite wall panels and an outer frame with wide and narrow faces. Mainly used for slab continuous casting, large cross-section square billet continuous casting, and special shaped billet continuous casting. Each composite wall panel of the combined crystallizer is composed of an inner copper plate connected by bolts (with a cooling water channel milled on the outer surface) and an outer steel water tank. A cooling water gap is formed between the inner copper plate and the outer wall for water cooling. Use a clamping mechanism to compress the four composite walls. In order to achieve online width adjustment of the crystallizer and form the required inverted taper, four sets of adjustment devices are installed on the upper and lower parts of the narrow wall panel of the crystallizer. When the assembled crystallizer and outer frame are placed on the vibration table, all inlet and outlet pipes are automatically connected. In order to better protect the lower mouth of the crystallizer and prevent premature and rapid wear, foot rollers or protective grids are installed next to the lower mouth of the crystallizer. The foot roller or protective grating vibrates together with the crystallizer. The crystallizer is directly aligned with the first section of the secondary cooling system (straight or fan-shaped) through a vibrating frame, facilitating accurate positioning of the crystallizer and the first section of the secondary cooling system. The two form a whole and can be quickly lifted.

To ensure good thermal conductivity, sufficient wear resistance, mechanical strength, and hardness of the crystallizer to extend its service life, the inner wall material is mainly made of copper based alloys, commonly used including copper, copper silver alloys (with a silver content of 0.07% to 0.1%), phosphorus deoxidized copper and copper beryllium alloys, chromium zirconium copper alloys, etc. The main purpose of using copper based alloys is to increase their recrystallization temperature, improve their hardness and strength at high temperatures, and extend the service life of the inner wall. In order to further improve the wear resistance and smoothness of the inner wall and reduce the drawing resistance, some even add a coating on the surface of the copper wall. Usually chromium plating or nickel plating, tungsten plating, iron plating, and three-layer nickel plating, nickel phosphorus alloy plating, and chromium plating.