TZM Hot Runner Gate Selection
- Details
- Category: Molybdenum knowledge
- Published on 07 April 2015
- Written by limei
- Hits: 368
Quality of injection molded products, mold design and manufacturing are closely related to the type of gate. TZM hot runner gate selection should be combined with a plastic type of plastic products, appearance requirements, the number of pockets, plastic properties, allow a variety of factors like the pressure loss. Especially in the hot runner design, gate determines the structure of hot runner system directly. TZM hot runner gate are divided into open gate and needle gate according to its function.
1.Open gate is open to pressurized molten plastic but when the injection end the cycle, the gate to freeze the plastic in each channel together preventing molten plastic into the cavity within. Open gates can be divided into round gate,edge gate and ring gate according to a circular shape into the gate.Ring gate.is the most widely used in TZM hot runner design and the application process.
2.Needle gate with good flow properties, such as very fine traces of the gate,is suitable for most plastics Plastic hot runner systems with needle gate is the most complicated structure. It has the same structure with ordinary plastic but has addition needle valve actuator tocontrol valve needle opening and closing movement.
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