Reasons and solutions for the excessive temperature rise of hydraulic presses during long-term operation
Dec 01,2016
(1) The hydraulic oil tank has a too small volume, insufficient heat dissipation area, no cooling device installed, or the capacity of the cooling device is too small.
(2) The quantitative pump supply system with a fast advance speed selection for the oil pump capacity will have a large portion of excess flow returning through the overflow valve at high pressure, causing heating during operation.
(3) The system piping is too narrow and too long, with excessive bends, resulting in significant local pressure loss and along-the-way pressure loss.
(4) The precision of hydraulic machine components is insufficient and the assembly quality is poor, leading to excessive mechanical friction losses during relative motion.
(5) A fault occurs in the unloading circuit of the system, or the unloading circuit is not set up, causing the oil pump to fail to unload normally when work stops, resulting in all flow from the hydraulic pump overflowing at high pressure, causing heating and an increase in temperature.
(6) The fit clearance of the mating parts is too small, or excessive wear leads to too large a clearance, resulting in significant internal and external leakage, which causes a large loss of volume and reduced efficiency, leading to a rapid increase in temperature.
(7) The hydraulic system of the single-arm hydraulic press is adjusted to a working pressure much higher than actually needed. Sometimes, due to overly tight seals or damaged sealing components, leakage increases, necessitating high pressure for operation.
(8) High ambient and operational environment temperatures cause the oil temperature to rise.
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Tianjin Jinghai County Jia Xuyan Hydraulic Machinery Co., Ltd.
Address: Fengjia Village, Duliu Town, Jinghai District, Tianjin
Contact:18902087888,13802191288
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