The raw materials for the glass ball are mostly natural […]
The raw materials for the glass ball are mostly natural ore. Therefore, in order to manufacture the glass ball, various ores are first pulverized, processed into a powder, and then a batch is prepared according to the glass component, and sent to a glass melting furnace for melting to form a glass liquid. Qualified glass flows through the feed tank and exits the feed port to form a strand. The temperature of the stock, the medium alkali glass is generally 1150 to 1170 ° C, and the alkali-free glass is 1200 to 1220 ° C. The strands are sheared into billets by nearly '200 shots per minute. The billet passes through the chute,
The ball splitter is plucked by the ball dividing plate, rolled into different funnels, and then dropped into a ball-forming groove formed by three rolls of the same direction of rotation. The billet rotates on the roller and its surface tension acts to gradually form a smooth round glass ball. The size of the diameter is determined by the thickness of the glass stream, the flow rate, and the speed of the scissors.
When the glass ball is off the roller, the temperature is still high. In order to prevent the ball from sticking, it needs to be cooled by a cold ball or a serpentine track. In order to reduce the residual stress generated by the temperature difference between the inside and outside of the glass ball, it needs to be annealed to slowly cool it. It is then stored in the ball compartment for quality inspection.