Booster injection is over, in a very short period of time the final shot of the high pressure of about 2 times the pressure imposed. So how much does not mean more pressure on what device it refers to the pressure increase the effective pressure is higher than the high end, played booster effect. Pressure is the ultimate casting with or without supercharger, after injection pressure of about 0.3 seconds later. Generally effective pressure turbocharger to improve the ultimate purpose of casting molten metal forming part of the fill after the fast solidification of molten metal solidification shrinkage forced to squeeze into the part to prevent the so-called depression, and will not rule out forming part of the pores and clean off residue hole with high pressure to reduce pressure to become smaller.
To achieve these two aims, the higher the pressure the better the final, but eventually the higher the pressure to cast the smaller projected area. Hence the need for greater and more intense the casting machine mold, bringing economic problems, so 500-800kg/cm range is sufficient. To take full advantage of booster effect, high-speed filling up to the final pressure after the time that the rise time is very important booster. From the beginning to the solidification theory, the end of solidification must maintain a pressurized state. If the flash occurs too early splash, if solidified the gate too late to shape the metal parts can not be a liquid supply and pressurized. Real production of die casting machine will generally boost the rise time set at 10-30ms like the degree. Pressure device for die casting machine manufacturer to another. The number of final pressure to see the instruction manual to understand. Occasionally see in the casting each site has a flash injection spray, and this is because the casting area is too large. Flash when smoke is recognized immediately casting area, using the following formula to allow the pressure kg/cm2 = clamping force kgX0.9 / cm2 area of the computer is less than the machine casting instructions to calculate the final pressure adjustment to the machine to calculate the following final pressure. Turn computer on more than the instruction manual of the machine to calculate the final pressure, there are flash emitted. Mold is generally a problem, once again confirm that the mold situation.
(This article reproduced from http://www.dgybl.com)