How is the manufacturing process of Alumina Bubble Brick carried out?

1. Raw material preparation
Everything starts with the careful selection and scientific proportioning of raw materials. Alumina Bubble Brick are the core raw materials. Their quality directly determines the performance of the final product. These tiny balls are made of high-purity alumina powder through a special process, with uniform pore size and good high temperature resistance. In addition to alumina hollow balls, an appropriate amount of alumina powder and other binders need to be added to adjust the density, strength and sintering properties of the material. During the raw material preparation stage, workers will mix them strictly according to the formula ratio to ensure that each batch of raw materials can reach the best state.

2. Molding process
Molding is one of the key steps in the manufacture of Alumina Bubble Brick. At this stage, the evenly mixed raw materials are fed into the molding machine and formed into a blank with a certain shape and size through the pressing action of the mold. During the molding process, the size and distribution of the pressure need to be precisely controlled to ensure the density and uniformity of the blank structure. The design of the mold is also crucial, which determines the shape and dimensional accuracy of the final product. After the careful creation of the molding machine, a piece of regular and solid green body is born.

3. Drying treatment
The green body after molding contains a certain amount of moisture. If this moisture is not removed in time, it will affect the subsequent sintering quality. Drying treatment has become an indispensable link. The green body is sent to the drying kiln and slowly dried under suitable temperature and humidity conditions. In this process, the moisture gradually evaporates and the green body structure gradually stabilizes. The length of the drying time depends on the thickness, humidity and performance of the green body. After sufficient drying treatment, the green body becomes harder and more durable.

4. High temperature sintering
High temperature sintering is the most critical link in the manufacturing process of Alumina Bubble Brick. At this stage, the dried green body is sent to a high temperature kiln for sintering. The temperature in the kiln gradually rises to above 1750 degrees Celsius, causing the alumina hollow balls and alumina powder in the green body to undergo chemical reactions and physical changes to form a dense sintered body. At high temperatures, the bonding force between alumina particles is enhanced, the porosity is reduced, and the strength and high temperature resistance of the material are significantly improved. High temperature also promotes the volatilization and removal of impurities in the material, further improving the purity of the product. After several hours of sintering, hard and high temperature resistant Alumina Bubble Bricks are born.

5. Finished product inspection and packaging
The last step is the inspection and packaging of the finished product. Each Alumina Bubble Brick needs to undergo strict quality inspection, including appearance inspection, size measurement, strength testing, etc. Only products that meet the standards can be allowed to be sold. In order to facilitate transportation and use, the finished product must also be properly packaged. The packaging material should have good shockproof and moisture-proof properties to ensure that the product is not damaged during transportation.