Basic inspection: Firstly, the sundries on the foundation should be removed, and a temporary and reliable fence should be erected on the edge; level gauges for measuring elevation, Ф0.5mm steel wire, wire hammer, XKW26 SERIES GANTRY MACHINING CENTERink fountain and adjustable brackets for pulling steel wire ropes should be prepared; foundation center given by civil engineering line position, check whether the vertical and horizontal centerlines are vertical.Research on Properties of H13 After Vacuum Nitriding After the center line meets the requirements, use a hammer to cast the center position on the foundation embedded part or the foundation edge angle iron frame, and mark it; Heat treatment process of gear vacuum carburizing and quenching according to the foundation center line, check the actual position and center deviation of the anchor bolts and each positioning embedded part No more than 2mm, record the inspection results in the installation record; XKW23 SERIES GANTRY MACHINING CENTER clean the anchor bolts, measure the verticality deviation of the bolt holes should be <L/450; and the elevation of the settlement observation point, and make a record; check the shape and size of the foundation and the shape and size of the hole, which should meet the design requirements; check that the surface of the foundation should be free of defects such as pockmarks, honeycombs, cracks, holes, and exposed ribs.