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What is the glass ball made of

Update time:18-09-2020
Summary:

In the past, textile mills with relatively backward and […]

In the past, textile mills with relatively backward and underdeveloped production processes were unable to flatten the cloth after producing the cloth. They could only use this round glass ball to flatten the cloth by rolling, so the cost was relatively low, so Use glass balls to save costs. What is the glass ball made of?
In the past, textile mills with relatively backward and underdeveloped production processes were unable to flatten the cloth after producing the cloth. They could only use this round glass ball to flatten the cloth by rolling, so the cost was relatively low, so Use glass balls to save costs.

Toughened glass, glass is industrially produced. The raw materials are mainly quartz sand, feldspar, calcite, Glauber's salt, etc. These ores must be heated to more than 1,000 degrees to react to produce molten glass. The diameter of the glass marbles that children usually play is about 1 cm. Its production method can explain the problem: the raw materials for glass balls are mostly natural ores. Therefore, to make glass balls, all kinds of ores must be crushed and added into powder. Then, according to the composition of the glass, a batch is made and sent to a glass melting furnace for melting to form a molten glass.

Qualified molten glass flows through the feeding tank and flows out from the feeding port to form strands. The temperature of the material strands is generally 1150~1170℃ for medium-alkali glass balls and 1200~1220℃ for alkali-free glass. The material strands are cut into ball embryos nearly 200 times per minute.

The ball embryo passes through the chute, the ball divider, and is moved by the ball divider plate, rolls into different funnels, and then falls into the ball groove formed by three rollers with the same rotation direction. The ball embryo is on the roller. The rotation and its own surface tension will gradually form a smooth and round glass ball.