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Injection mould pressure mean?
by：CSSSLD
2021-02-03
Injection mold is refers to the injection pressure on the screw head when the melt pressure.
When choosing injection pressure, first of all should take account of the injection pressure, injection molding machine is allowed only in the injection pressure is too keyed cause cavity pressure, melt not filled cavity smoothly;
On the other hand, the injection pressure is too big, not only can create products leak, also can cause deformation, and even system overloads.
plasticizing pressure is also called the back pressure, refers to the injection machine screw at the top of the melt during the screw rotation back pressure, is by adjusting the injection hydraulic cylinder oil resistance to control. Plasticizing pressure increase the internal pressure of the melt, strengthened the shear effect, due to plastic shear heating, thus raise the temperature of the melt. The increase in plasticizing pressure screw back at a slower pace, extended the plastic screw in the heating time, plasticizing quality can be improved. But too much of plasticizing also increase cylinder pressure measurement indoor melt flow and leakage flow, reduced the melt conveying capacity, reduced the amount of plasticizing, increases the power consumption, and high plasticizing too much pressure will make shear heating or shear stress, melt prone to degradation.
in the injection process of injection pressure and melt temperature are mutually restricted. Injection pressure required high temperature and material temperature under the combination of can obtain satisfactory results.
flows through cavity pressure refers to the injection pressure nozzle, congratulations gate after the pressure loss of the melt pressure produced in the mold cavity. Injection mould pressure is provided by the injection system of the hydraulic system. The pressure of the hydraulic cylinder by injection molding machine screw is passed on to the plastic melt, under the impetus of the plastic melt in the pressure, the injection molding machine nozzle into the mold of the vertical flow channel, mainstream channel, distributary channel, and the gate into the mold cavity, the process is the injection molding process, or filling process. Pressure exists to overcome resistance in the process of melt flow, or conversely, exist in the process of flow resistance need to offset the pressure of the injection molding machine, to ensure that the filling process smoothly.
in the process of injection molding, injection molding machine nozzle has the highest pressure, in order to overcome the melt flow resistance of the whole. Followed by pressure along the flow length to melt the front wave front place gradually reduce, if cavity internal exhaust is good, the melt front end pressure is atmospheric pressure. Related searches: injection mold
changshu injection mold
plasticizing pressure is also called the back pressure, refers to the injection machine screw at the top of the melt during the screw rotation back pressure, is by adjusting the injection hydraulic cylinder oil resistance to control. Plasticizing pressure increase the internal pressure of the melt, strengthened the shear effect, due to plastic shear heating, thus raise the temperature of the melt. The increase in plasticizing pressure screw back at a slower pace, extended the plastic screw in the heating time, plasticizing quality can be improved. But too much of plasticizing also increase cylinder pressure measurement indoor melt flow and leakage flow, reduced the melt conveying capacity, reduced the amount of plasticizing, increases the power consumption, and high plasticizing too much pressure will make shear heating or shear stress, melt prone to degradation.
in the injection process of injection pressure and melt temperature are mutually restricted. Injection pressure required high temperature and material temperature under the combination of can obtain satisfactory results.
flows through cavity pressure refers to the injection pressure nozzle, congratulations gate after the pressure loss of the melt pressure produced in the mold cavity. Injection mould pressure is provided by the injection system of the hydraulic system. The pressure of the hydraulic cylinder by injection molding machine screw is passed on to the plastic melt, under the impetus of the plastic melt in the pressure, the injection molding machine nozzle into the mold of the vertical flow channel, mainstream channel, distributary channel, and the gate into the mold cavity, the process is the injection molding process, or filling process. Pressure exists to overcome resistance in the process of melt flow, or conversely, exist in the process of flow resistance need to offset the pressure of the injection molding machine, to ensure that the filling process smoothly.
in the process of injection molding, injection molding machine nozzle has the highest pressure, in order to overcome the melt flow resistance of the whole. Followed by pressure along the flow length to melt the front wave front place gradually reduce, if cavity internal exhaust is good, the melt front end pressure is atmospheric pressure. Related searches: injection mold
changshu injection mold
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