First, liquid phase slurry molding, that is, the use of liquid phase slurry, the slurry in a specific shape mold for solidification, to obtain a specific shape of green body molding method. This method is most commonly used for ordinary pouring of gypsum molds; Secondly, high-pressure grouting using plastic resin molds for fully automatic processing; Third, a porous filter membrane prepared by coating a gel-sol on a porous surface and a gel injection mold using a plastic mold. Less common methods are electrophoretic deposition, liquid deposition molding, and selective gel molding and inkjet printing molding that do not require molds.
Second, semi-solid flow transformation type, that is, the use of solid or solid containing a certain amount of liquid, deformation at a certain pressure and temperature, and has the property of maintaining the ability to deform after pressure withdrawal, to obtain a specific shape. This molding method is an ancient ceramic molding process, which has been used since humans made the first synthetic material, ceramics. At present, the common semi-solid flow transformation method is to use an extruder to manufacture bricks and tiles or honeycomb porous ceramics; secondly, the use of wet pressing machines to manufacture tiles and rolling machines to manufacture porous plates and other multi-layer filters; Third, small, special-shaped porous devices are manufactured for heating using an extrusion injection machine.
Third, solid phase powder molding: the powder particles containing a certain amount of forming agent, sent into the mold, pressurized and pressed into a specific shape of green body. The body blanks prepared in this way are mostly regular shapes, and the common way is to press plate and tube ceramic bodies by ceramic automatic presses or isostatic presses. The uncommon method of solid phase powder molding is vibration molding, that is, the method of using a vibration molding machine to consolidate and form the porous ceramic green body obtained by consolidating the powder in the mold under heating conditions and vibration conditions. In addition, there is a special solid phase powder molding method that uses laser selection of a certain area of powder to directly heat and consolidate, this method does not require a mold, the so-called laser selection molding.
Fourth, vapor deposition molding: that is, the use of reaction gas on the substrate or substrate condensation and deposit porous ceramics, this method is mainly used to prepare porous ceramic membranes, for filter materials and various sensor manufacturing.
The above content comes from the Internet, if there is infringement, contact to delete.
