Generally, this method is used to process molds in two parts. One is the cavity, which provides a concave shape. The second is the core, which makes part of the internal shape. The cost depends on the part obtained by the geometry.
As a complex part, the complexity of the mold increases and becomes more expensive. In the metal injection molding process, the melt of the injection molding machine is injected into the mold's thermoplasticity under high pressure. The molten plastic is cooled and solidified in the shape of a mold. The formed part is discharged from the mold. The need for the ejection system pushes a part of the mold because the part shrinks to the core when it cools. This is a mold that is generally located at the core with ejection pins. Metal injection molding mold type:
1. Extrusion is suitable for the manufacture of pipes, rod lengths and other cross-sections. The thermoplastic particles are placed in the hopper feed extrusion barrel, which includes a rotating screw. The particles melted by the barrel heater and friction generate heat from the screw to maintain the particles in a molten state. The melt is then forced to pass through the part formed by an ideal geometry die hole. Unlike injection molding, in the process of slowing down the mold cooling and replenishing new materials, extrusion is a continuous process, and the material flows into the barrel for extrusion. Therefore, extrusion manufacturing is very effective.
2. Compression molding. Compression metal injection molding technology is used to form thermoset materials. The mold is installed on steam heating and electricity. The raw material is often referred to as an electric charge, which softens in the mold cavity. Then the mold closure material is the mold that is forced to use. The mold remains closed until partial pressure.
