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The high temperature of the injection molding machine during use is one of the common problems for customers in use. The following is the reason analysis and treatment methods for the high temperature rise of the injection molding machine.
1. What are the reasons for the high temperature rise of the injection molding machine?
(1) The fixed pump oil supply system with the capacity of the oil pump selected according to the fast forward speed will cause most of the excess flow to overflow from the overflow valve under high pressure and generate heat during operation.
(2) The unloading circuit in the system fails or because the unloading circuit is not set, the oil pump cannot unload when it stops working. The entire flow of the pump overflows under high pressure, resulting in overflow loss and heat generation, resulting in temperature rise.
(3) The system piping is too thin, too long, excessively bent, local pressure loss and pressure loss along the way are large.
(4) The fuel tank volume is too small, the heat dissipation area is not enough, and the cooling device has too small capacity.
(5) Insufficient precision of components and poor assembly quality, and large mechanical friction loss between relative movements.
(6) The fitting clearance of the matching parts is too small, or the clearance is too large after use and wear, and the internal and external leakage is large, resulting in a large volume loss. For example, the volumetric efficiency of the pump decreases and the temperature rises quickly.
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