Time:2024-01-04 15:19:05 Browse: 120
Inspection Procedures Before Installing the Cylinder on a 630-ton Hydraulic Press:
I. Check Installation Dimensions
According to the installation drawings provided by the technical personnel, verify whether the dimensions of the cylinder match those of the 630-ton hydraulic press. Any significant discrepancies can prevent the cylinder from being installed on the equipment. Manufacturers provide corresponding dimensions and connection sizes before cylinder production.
II. Check Inlet and Outlet Ports
The inlet and outlet ports are crucial. The position of the hydraulic pump station and the inlet and outlet ports should be in the same direction to ensure a direct connection. This avoids multiple bends in the hydraulic pipeline, affecting pressure and preventing hydraulic shocks. Before installation, remove the plugged pipes to avoid complications during removal from the 630-ton hydraulic press.
III. Check Mold Connection Dimensions
Examine whether the connection dimensions of the cylinder piston rod and the mold are compatible. Both the mold and the cylinder are relatively expensive components, and any mismatch in dimensions can directly impede equipment installation.
IV. Check Operating Conditions
If the above two points are normal, place the cylinder on the crossbeam of the four-column hydraulic press, connect to the pump station, and run several times under no load. Check for smooth operation and inspect the piston rod for scratches.
V. Check Cylinder Stroke
Measure the stroke of the lower cylinder when it descends. This is crucial to ensure that the stroke is neither too large nor too small after installation, impacting the equipment's operation.
VI. Check for Internal Leakage
Under the rated pressure, inspect the internal leakage of the cylinder piston (for cylinders with a stroke greater than 1m, also check the mid-position; for multi-stage cylinders, only measure the internal leakage of the small cylinder).
VII. Check for External Leakage
Under the rated load, the cylinder performs a full stroke reciprocating motion. Inspect the sealing of the piston rod for any leaks. After exhausting and running, there should be no abnormal phenomena such as external oil seepage.
VIII. Buffering Effect
With the buffer valve of the cylinder fully open, operate at high speed at 50% of the rated pressure. Check whether the buffering effect meets the design requirements.
IX. Low Speed Operation
Under rated load conditions, the tested cylinder should operate at the designed low speed for at least two complete reciprocations, and crawling is not allowed.
X. Low Starting Pressure
Under no load, slowly pressurize the system by adjusting the safety valve, and measure the low starting pressure.
