Usage and feature:
I: Machine frame featureHRG series hydraulic press with four-column and frame two types. It has an independent electrical system, hydraulic power system and heating system. The hydraulic control part used advanced cartridge valve integrated control system, long life, simple and compact structure, reliable and sensitive action, convenient maintenance, high level of generalization; electrical control system is equipped with advanced OML-PLC industry computer control, has keep pressure time, automatic fill pressure and exhaust, slow open and close, product count and measuring pressure and temperature control etc, multi-item functions, and using button centralized control can be achieved adjusted and both hand cycle operation mode. Ejection cylinder equipped with stroke protection switch, effectively preventing broken mold, considering the security, our company specially added to a set of mould protection device.
II: Usage of machineThe machine is mainly applied to composite manhole cover, grass fiber products, BMC, DMC, SMC material products and other plastic products.
III: Raw material introductionSMC composite material is “Sheet molding compound”.The main material is glass fiber (GF)、unsaturated polyester resin (UP)、Low shrinkage additive，MD（filler）and various additives.
?BMC composite material consists of high-activity unsaturated polyester resin (UPR), adding low shrinkage resin, short glass fiber, inorganic filler and mold release, and pigment and so on. It called premixed bulk (dough) molding compounds. The United States called bulk molding compound (BMC), the UK and Europe called dough molding compound (DMC), Japan is called the premix compound (PMC)
IV: Production and cost analysisIf on the premise of large output, we recommend 24-hour production. As the reason of moulds heating-up time is long, needing about 2-4 hours (it decided by local climate). Many manufacturers are now arranged 24 hours in production, like this not only reduces power consumption and increase production efforts. The longer the heating time, the greater the power consumption and also show that the increased cost of product, so using 24-hour produce both can reduce energy consumption and can increase the output.
V: The life of mould Under normal operation of mould life should be a long time and not easy to wear, as far as I know, several manufacturers use the first mold until now.
VI: Product scrap situation Emphasize here: the product scrap rate is mainly decided by the operator
(Such as ingredients, feeding time control, heating temperature control, etc.). The proficiency of workers operating is directly affecting the scrap rate, so training the operator is a necessary ways to reduce the scrap rate.
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