Process Flow For Casting Technology Of Fused Cast Bricks

This process is short but complicated, and each step is related to the quality of the final product. There are several kinds of casting methods to produce casting blocks, and different casting method leads to different performance of fused cast blocks,refractory company below are several casting methods which are commonly used in China.

The specific production flow of casting is as below:

1. Proportion the raw material
Pre-treat the raw material of oxidized aluminum powder, zircon sand and zirconium and other raw materials, proportion them with computer according to different type of fused cast bricks.

2. Melting in electronic furnace
According to the requirements of production plan, put the proportioned raw materials into a special electric arc furnace and melt under optimum conditions and moderate temperature, as low temperature is easy to lead to uneven fused cast bricks, forming a porous body and cracks, and increasing shrinkage accordingly.

3. Casting in the mold
Pouring the molten materials into the product mold which is specially designed. When using properly superheated melt casting, shrinkage hole of fused cast bricks are concentrated, thickness of the dense region increases and density of the whole product increases. However, if the degree of overheating is too high, although the melting density has increased, but it is easy to make fused cast Clay, High Alumina Insulating Bricks forming cracks and big shrinkage hole.

4. Cooling
Slowly cool down the casted fused cast Mullite Insulating Firebrick, make the crystal of fused cast bricks growing and forming the best structure. Generally, insulation box filled with diatomite is used to anneal the blocks with mold or resistance furnace which can adjust temperature is used to anneal. The initial temperature and heat insulation have obvious effect on annealing effect.

5. Surface machining
Examine the defects on surface, brick size, accuracy of every fused cast bricks then make high precision grinding according to customer’s requirement to ensure the accuracy of its size. Mechanical machining is the means to improve the quality of fused cast Magnesia Carbon Brick and prolong its service life.

Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory brick,refractory castable, refractory nozzle, ceramic fiber, slide gate, etc;