Provide Adequate Circulation System in The Table Mould

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    It is the responsibility of the mould designer to provide adequate circulation within the Table Mould(FURNITUREMOULD). Usually, the simplest system is a system that drills longitudinally through a template. However, this is not necessarily the most efficient method for a particular mould.


    However, when drilling is used for the circulation of the coolant, these should not be too close to the indentation (eg, less than 16 mm) as this may result in significant temperature changes on the indentation, resulting in moulding problems.


    The layout of the circuit is often complicated because the runners cannot be placed too close to any other hole in the same template. It can be recalled that the template has a large number of holes or grooves to accommodate the ram, the guide post, the guide sleeve, the sprue bushing, the insert, and the like. The degree of safety in positioning in the direction of flow adjacent to another orifice depends to a large extent on the depth of drilling of the desired flow pattern. When drilling deep runners, the drill tends to deviate from its prescribed route. The rule that is often applied is that for holes up to 150 mm deep, the flow should not be less than 3 mm of any hole. For deeper flow patterns, this margin is increased to 5mm.


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