maintain

External overall inspection

Thoroughly clean the outside of the forging machine, check whether the fastening screws are loose, whether the parts are welded, cracked or deformed. The fuselage shall be marked with a length of no less than 30cm.

Inspection of test run

After the forging machine tool rotates, check whether there is air leakage and whether the machine has abnormal vibration. Conduct comprehensive lubrication as required. Carefully observe whether there is collision, friction and stagnation. Whether there is abnormal sound. Drive low-speed operation with power machinery, and observe the operation condition of each part.

Inspection of input device

The conveyor chain shall be inspected section by section. In case of severe wear, deformation and crack, it shall be replaced. The tension of the feeding chain should be the same on the left and right. It is appropriate that the middle of the chain length slightly contacts the bottom plate. The driving and driven shafts of the conveying chain should be parallel. If it is inclined, the cause should be found and eliminated.

Inspection of clutch device

The clutch shall be adjusted during operation and use, and the wear degree of wave shaped teeth shall be checked. If the tooth height is 1 / 3, it shall be replaced.

Inspection and adjustment of forging parts

Carry out the pressure test of the whole machine. The pressure used in the test is 1.25 times of the working pressure. Check that the piston extends to the working stroke of Z, and maintain the pressure for 15 minutes. The drop value of the pressure gauge reading shall not exceed 4% of the test pressure; The oil circuit shall be free of leakage; After the pressure is removed, the pointer of the pressure gauge shall return to the "0" position, the parts shall be damaged, the pull rod shall not be significantly deformed, and the moving parts shall not be stuck. Conduct reliability test on the valve, adjust the valve to the working pressure (upper left + 5, lower left + 1) MPa, and conduct continuous test for 5 times. The needle valve is sensitive to open and close, and the pressure gauge reading after each valve trip shall not be lower than the rated working pressure.