What is the low pressure casting machine common faults and solutions?(2-3)
In the use of low pressure casting machine, some failures occur, which affects the normal operation of the low pressure casting machine. We need to troubleshoot in time to restore the normal operation of the low pressure casting machine.
The common faults of low pressure casting machines are:
2. The pump pressure rises too high
If there is air inhalation on the suction side of the hydraulic pump, check the cause before repairing. It is found that the air filter is clogged and needs to be cleaned in time. If the damage is serious, the corresponding parts can be replaced. Sometimes the usage time is too long, which will cause the noise of the hydraulic pump to become larger. The reasons may be as follows:
a. The axial center of the hydraulic pump and the motor is misaligned;
b. The rotation speed of the hydraulic pump is not in accordance with regulations;
c. Actuating oil pollution;
d. Reduce the amount of operating oil;
e. The pump shaft seal of the hydraulic pump has air entrapment.
The pressure of the hydraulic pump pressure for the low-pressure casting machine is too high, and the method of repairing the hydraulic pump can be preferentially selected, and then it is confirmed whether the number of revolutions is normal.
3. The main cylinder does not work.
The main reasons for the failure of the main cylinder of the low-pressure casting machine are as follows:
a. The oil pressure valve of the low pressure casting machine does not work;
b. The action of the hydraulic solenoid valve of the low pressure casting machine is slow;
c. The circuit loop and the hydraulic unit have failed.
First of all, we can check the oil pressure valve, clarify the location and cause of the failure of the hydraulic valve of the low-pressure casting machine, and then confirm whether the wiring of the control panel of the low-pressure casting machine is disordered, dropped or broken. Then take the correct solution according to the corresponding situation.
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