Do you keep your injection molding machine "warm" when cold air strikes?
When the weather
is getting very cold at certain countries and areas, there are something we
need to know and do to protect our injection molding machines.
1. Maintenance of
injection molding machine
The sudden drop in
temperature may affect the operation of the injection molding machine. In this
environment, we have to pay attention to the machines anti-freezing or
damp-proof protection, to avoid any damages caused.
force of the injection molding machine depends on hydraulic oil. Generally, the
injection molding machine can be used normally at room temperature of 10°C to
40°C. When the temperature is lower than this range, the viscosity of the oil
is too high, and the pressure cannot be reached, thereby impairing the operation.
For customers who use the machine in the northern cold zone, it is recommended
to install the oil temperature preheating function to ensure that the oil
temperature can be within a reasonable range. When the cooler is running, the
oil temperature is low. If the parameters such as the pressure and speed are
rated at this time, the oil temperature will gradually increase with the
extension of production time. When the oil temperature is high, the viscosity
will be lower than the oil pressure at low temperatures. Therefore, it often
happens that the size is too large at ejection, and becomes smaller after one
or two hours of normal production, resulting in obvious shrinkage. This is also
the reason why proofing products are good, but normal production is unstable. The oil
temperature should be controlled between 45°C and 55°C.
When the weather is cold, the oil temperature cooling
water should be turned off when starting up, and the cooling water should be
turned on after the oil temperature rises.
before and after machine operation
(1) The standard
process temperature is 5-10°C higher than that in spring and autumn. If the
temperature is too low, you need to check whether each joint is frozen.
(2) Check the hydraulic system seals to avoid leakage caused
by low-temperature deformation of seals such as O-rings.
(3) Check whether the electrical and hydraulic components
work normally; check whether has any abnormal noise and loose components to
ensure the normal operation of the equipment.
(4) If the lubrication pump oil cannot be turned on, add
hydraulic oil appropriately for an emergency response to meet the lubrication
(5) After shutdown, you should clean up the residual
circulating water in the cooling system to avoid freezing and cracking the oil
cooler and pipeline.
(6) Clean up the cooling water drain and the residual
circulating water in the mold.
(7) Keep the injection molding machine and fuselage clean.
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