Corundum crucible has the characteristics of high temperature resistance, quench resistance and chemical corrosion, but it can not resist acid and alkali. The drying above the ground is actually a cylinder, like a small bucket. Despite its many advantages, the aluminum contained in the corundum crucible can cause Alzheimer's disease. There are many forming methods of corundum crucible. The manufacturer of corundum crucible will introduce the forming method of corundum crucible.

1. Drying pressure method.

Due to the uniform stroke pressure difference of the hydraulic press, the height of the pressed parts is also different under the condition of different powder filling. The particle diameter is greater than 60 microns, which can move freely between 60-200 mesh and lose pressure. There are two types of press: hydraulic and mechanical, which can be divided into semi-active or full-active forming. The technology of iron oxide ceramic dry pressing silicon carbide furnace tube is limited to articles with good shape, inner wall thickness of more than 1mm and length to diameter ratio of no more than 4 to 1. Uniaxial or bidirectional forming.

The pressure of the tablet press is 200 MPa. Moreover, the forced pressurization pressure of the mechanical press is very fine, which changes due to powder filling, which is easy to prolong the size after firing and reflect the quality of goods. The accuracy of loading capacity has a great impact on the mastery of the dimensional density of the whole machine. What are the forming methods of corundum crucible? Therefore, the uniform dispersion of powder during dry pressing is very important for the filling of powder. The value of money reaches 15 to 50 pieces per second.

2、 Grouting method.

When the adsorbed slurry on the model wall meets the thin requirements, the hollow grouting also needs to pour out the remaining slurry. In order to increase the ductility of the blank, too deep shallow slurry should be used. Grouting method is an earlier forming method of iron oxide ceramics. Generally, water is used as the flux, then corundum mullite sagger degumming agent and adhesive are added, the exhaust hole is fully ground, and then poured into the cooked paste mold. Due to the use of plaster of paris mold, the profit is low, and it is easy to form large-size jade crucible dislocation elements. The key of this process is to prepare iron oxide slurry. Because the shell bowl paste capillary adsorbs water, the slurry solidifies in the mold.

The above two forming methods of corundum crucible are actually a grouting method with relatively low cost, but the important thing is the preparation of the material itself, so this should be paid special attention to.