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The breakage of the syringe mould Due to improper tempe […]
Due to improper temperature control, the forging Syringe Mould material itself has cracked. In this case, the only way to change the template is to change the template. Cracks and even broken templates in production are often caused by the selected materials with high heat treatment hardness and excessive stress. Cracking occurs easily during welding. The template stress is too large, and the impact cracks are mostly at the sharp corners of the cavity. If it can still be used, it can be perforated and cut in an I-shaped mosaic, or it can be hug around the template.
In particular, thermosetting plastic moulds and aluminum alloy injection moulds are severely worn. Insufficient hardness of the movable parts in the injection mould, sharp corners, improper material selection, etc. are also causes of wear. For highly corrosive products and plastics with considerable hardness and fillers, the surface of the materials we choose should be corrosion resistant and have high surface hardness.
The heat dissipation of the long core mould is very important, and the selection of appropriate materials has a big gap between the appearance of the product and the output of the product. For example, beryllium copper and other materials containing beryllium and cobalt are selected, after heat treatment, they have higher strength, hardness, fatigue resistance, wear resistance and good heat transfer.
Material requirements for syringe moulds With the development of the plastics industry, the complexity and precision of plastic products are becoming more and more demanding, and higher requirements are placed on syringe mould materials. For the production of complex, precise and corrosion-resistant plastic moulds, pre-hardened steel, corrosion-resistant steel and low-carbon maraging steel can be used, all of which have better cutting, heat treatment and polishing performance and higher strength. The point gate structure of the injection mould that is convenient to be pulled off from the root of the point gate during injection moulding includes: a point sprue sleeve set in the mould, and the point gate in the point sprue sleeve communicates with the cavity of the mould. The gate is a full taper taper hole. The point gate of this product is a full taper taper hole with consistent taper from beginning to end. During injection moulding, the point gate is easy to pull off from the root, which greatly improves the product accuracy; in addition, this tapered hole can be used It is processed by piercing first and then wire cutting. As we all know, wire cutting can greatly improve the smoothness and precision of the point gate, shorten the processing time, and improve the processing efficiency. Take the mould for processing the plastic magnetic rotor of the indoor and outdoor unit of the inverter air conditioner as an example. Medical Mould only takes about an hour.