Temperature control method for hydrostatic bearing friction pair of high-pressure heavy-load friction welding machine

The invention provides a temperature control method for a static pressure bearing friction pair of a high-pressure heavy-load friction welding machine to solve the problems that the machining precision of the friction welding machine is reduced and the service life of the friction welding machine is shortened due to changes of the shape and viscosity of a static pressure oil film caused by temperature changes of the static pressure bearing friction pair under high-pressure heavy-load working conditions. Starting from the two aspects of the environment temperature and the local temperature of the static pressure bearing friction pair, firstly, global oil liquid is heated or cooled through the oil temperature control box, the influence of the environment temperature on the static pressure bearing friction pair of the friction welding machine is reduced, and then the local temperature of the static pressure bearing friction pair is fed back through the temperature sensor on the oil pad; the variable frequency mo