Production process of novel wax removing powder

Abstract

The invention provides a production process of novel wax removing powder. The production process takes industrial aluminum hydroxide as a raw material and comprises the following steps of treating through the steps of washing and calcining, screening, removing iron and the like, finely selecting and removing impurities to obtain a wax removing powder product. The production process has a simple flow and is convenient to use; materials are easily available and superfine aluminum oxide particles which influence a wax removing effect and impurities which influence the quality of a product can be effectively removed through finely selecting and removing the impurities, so that the product has a very good wax removing effect; and the production cost is low and the product can be circularly utilized for a plurality of times.

Description

technical field [0001] The invention belongs to the technical field of ceramic processing, in particular to a production process of wax-removing powder. Background technique [0002] At present, most of the ceramic production processes in my country are hot die-casting and high-temperature sintering into porcelain. Both of these two production processes use wax as the binder for green body molding. In the processing and production of industrial ceramics and special ceramics, hot die-casting is mostly used. . The hot die-casting molding method is a method of manufacturing industrial ceramics in which an appropriate amount of industrial paraffin is added to the calcined ceramic powder, and then heated and stirred to form a fluid slurry, which is then injected into a steel mold and condensed into a workpiece blank. Products produced by hot die-casting molding are especially suitable for manufacturing industrial ceramics with complex shapes, except that their surface smoothness ...

AI Technical Summary

Problems solved by technology

At present, the wax removal powder used by most manufacturers is ordinary industrial alumina powder. This kind of wax removal powder has the effect of wax removal to a certain extent, but its powder particles are irregular, too fine or uneven. When in use, the particles are easy to gather and bite each other to form arch gaps, and the overall fluidity is poor, resulting in uneven wax removal in the wax-lost state when the workpiece is discharged, and parts without wax removal powder support are prone to bubbles, cracks, deformation, etc. At the same time, when too fine particles gather, the gap is too small, which makes the overall air permeability and heat transfer poor, which is not conducive to the volatilization of wax, and it is easy to cause the body to flow wax

In addition, too fine particles will also cause the problem that the powder blowing process on the surface of the workpiece is too difficult, which requires a lot of manpower and material resources to complete, and the dust pollution is serious