How many points did the hydraulic shearing machine finish before the task. Before conducting idle operation trial work, a wild disc drive should be used to cover the task distance and confirm the abnormality before operating the facility. Facilities with hydraulic installation and inspection of oil storage tanks should be in short supply. After starting the oil pump, check whether there is any leakage in the valves and pipelines, and the pressure should meet the requirements. Open the cylinder to release the atmosphere from the fragments.

　　The cutting edge of the blade should be kept sharp. If the cutting edge becomes dull or there is a cracking phenomenon, it should be replaced in a timely manner. When cutting, the pressing installation should firmly press the sheet metal, and stop cutting without being pressed tightly. Facilities with hydraulic installation, except for the throttle valve, the other hydraulic valves are not allowed to be adjusted privately. The thickness of the hydraulic swing shearing machine for cutting sheet metal should be determined based on the "Straight Line Diagram of the Relationship between Ultimate Strength and Sheet Thickness of Sheet Metal".