Structural ceramics
Powder molding has relatively high hardness. The molds are divided into upper molds, lower molds, and concave molds. Some products with holes require mandrels. In order to improve the service life and product consistency, tungsten steel should be used as much as possible for the working parts of the concave mold and the core rod. The upper and lower molds are simple in shape and can also be used for products with large output. If the shape is too complicated, especially on the end of the mold Complex, try to choose mold steel for easy processing.
Electronic ceramics
Powder molding, according to different products, the compaction density will be different, most of the small products are solid small discs, and most of the 20-station rotary presses are used. The mold structure is: upper mold, lower mold, and concave mold; Pay attention to the fit clearance when making, if the clearance is not suitable, it will cause delamination and missing corners.
Large ring-shaped electronic ceramics will be pressed by a nine-station rotary press. The mold structure is: upper mold, lower mold, core rod, and concave mold. When making, pay attention to the contour and matching gap of the mold.
Purposeedit
Ceramic molds are made of plaster, which can be divided into high-strength plaster and ordinary plaster.
High-strength gypsum is mainly used in machine press production. Because the machine press has a certain pressure, the plaster mold must be able to withstand a certain impact.
Ordinary gypsum is mainly used for grouting and printing blank production, and grouting and printing blanks do not require very high gypsum.
Advantages and disadvantages of ceramic molds
advantage
High strength, high hardness, moisture resistance, wear resistance, stain resistance, corrosion resistance, high temperature resistance, easy cleaning, small deformation, good insulation, and a certain degree of resistance to rapid cold and heat.
Disadvantage
High brittleness, poor plasticity, poor toughness, and poor thermal conductivity.
What are the ceramic molds?
2020 08/17