If the temperature rises too high injection molding machine, usually have the following reasons:
  1.fuel tank volume is too small, not enough heat dissipation area, cooling capacity is too small.
  2.according to fast-forward speed selection of quantitative pump fuel injection system pump capacity, in the work will have most of the excess flow under high pressure relief valve overflow from the back and fever.
  3.the system unloading circuit failure or due to unloading loop is not set, stop working when the pump can not be unloaded, all flow pump under high pressure overflow, the overflow loss and heating, temperature rise.
  4.the pipeline system too long, bent over, local pressure loss and pressure loss along the way.
  5.the lack of precision components and assembly quality is poor, the mechanical friction loss relative motion between the large.
  6.clearance fitting is too small, or use wear gap is too large, resulting in leakage, large volume, resulting in loss of large, such as the decrease of the volumetric efficiency of the pump, quick temperature rise.
  7.the system working pressure of hydraulic adjustment is much higher than the actual needs. Sometimes it is the result of sealed tight, or because of the seal is damaged, leakage increases to high pressure to work.
  8.the climate and environment temperature is high, the oil temperature rise.
  9.select the oil viscosity is improper, the viscosity of viscous resistance, viscosity is too small, the leakage increases, two cases can cause temperature rise.