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China, Chinese Determining Sprue Dimensions for Injection Mould1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Other MouldsMouldMold
Shenzhen Meibang Precision Technology Co., Ltd.
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Product Description General guidelinesThe dimensions of the sprue depend primarily on the dimensions of the molded part andespecially its wall thickness. Here are some general guidelines you should consider:The sprue must not freeze before any other cross section. This is necessary to permitsufficient transmission of holding pressure.The sprue must de-mold easily and reliably.ExampleFigure 1 below illustrates a sprue designed under these guidelines. Use the following formulas todesign the sprue. A radius r2 is suggested at the root of the sprue to avoid the sharp corner betweenthe sprue and molding and to facilitate the flow of material.FIGURE 1. Radius at sprue base improves processing
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