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It is importance cooling for the injection mold

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China Injection Mold Cooling  System

Designed for cooling
 
Cooling designed to make the uniform cooling and is within a short time fix molding, waterways arranged a direct impact on the quality and cost of the molding cycle of the product
 
For Quality: When water is used to control the molding mold temperature, mold temperature and its fluctuations on product shrinkage deformation, dimensional stability, mechanical strength, stress cracking and surface quality are all affected. Main features: surface finish, residual stress, crystallinity, thermal bowing

In order to control the injection mold temperature, 100 degrees below, usually adopts water as cooling
medium.Cooling water temperature by circulating water pump of the thermostat, circulating in the
cooling channel is arranged on the mold manufacturing internal, to stabilize the mold by heat conduction
and radiation temperature.

Cycle usually from the injection mold external cannot observe the cooling water (if the mould is transparent
enough to observe the into into into). In fact, the cooling water flow mode from fluid mechanics is the existence
of "laminar" and "turbulent" two modes.

In order to efficiently plastic mold temperature control, cooling water state is best "turbulent" state.

"Turbulence" state can be tailored by the fluid dynamic viscosity coefficient, hole diameter, velocity of such
decisions "Reynolds number" of this indicator for approximately predict.

Only water speaking words, in order to make the cooling water into turbulence, by using the above a certain
flow speed so that to achieve the water flow in the manner.

That is to say, if you have identified a cooling hole die diameter, in order to achieve turbulent, only the circulation pump supply rate was maintained at a certain value above can supply.

In this case, because of the dynamic viscosity coefficient will change due to water temperature, so it needs to flow through the change of water temperature.

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