Electronic & Electrical

? ? ? ? Youde Prototype Co.,Ltd is a professional reaction injection molding company and we are also one of the best China reaction injection molding manufacturers and suppliers with one of the famous brands, our factory is able to produce newest and best reaction injection molding with high quality. Welcome to buy cheap or wholesale discount products from us.What is RIMRIM is a new process way for producing large size and huge quantity products rapidly . RIM process is monomer or pre-polymer (PU materials) in liquid state with a certain proportion which measured by the metering pump mixing in mixing head of a mold . After the mixture be injected into the mold under a low pressure/room temperature environment , it will rapid response and cross-linking curing . After ten more minutes , it will be solidified , and then release it from the mold , that part is RIM product . This process can be simplified as: storage, measurement, hybrid ,mold filling and curing , demould and post-processing.The process of Reaction Injection Molding1) StorageTwo raw liquid material used in the RIM process were stored in two reservoir at certain temperatures, reservoir is commonly pressure vessel. In molding , stoste usually in 0.2 ~ 0.3 MPa low pressure in the reservoir, and circulating constantly in the reservoir, heat exchangers and mixing head. As for polyurethane, the average temperature of stoste is 20~40 ℃, the temperature control accuracy is ±1 ℃.2)MeasurementMeasurement will be finished by the metering pump , and requirements for measuring accuracy is at least be ± 1.5%, and the best control should at ± 1%.3) HybridIn RIM process , product quality is largely depend on the quality of mixture in the mixing head , so does the production capacity . The normal pressure is about 10 Mpa in order to get the better effect .4) Mold fallingThe characteristic of RIM process is the material flow rate is very high .Then stoste’s viscosity can not be very high .Such as the viscosity of polyuret