Hydraulic press
Hydraulic press is a kind of machine which uses liquid as working medium and is made according to Pascal principle to transfer energy to realize various processes. Hydraulic press generally consists of three parts: the machine ( host ), power system and hydraulic control system. Hydraulic machines are classified as valve hydraulic machines, liquid hydraulic machines and engineering hydraulic machines. Hydraulic press is commonly used in pressing process and forming process, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet drawing, powder metallurgy, press fitting, etc. China 's first ten thousand tons of hydraulic press is free forging hydraulic press, ten thousand tons of hydraulic press is completed, for the state power, metallurgy, chemical, mechanical and national defense industry and other departments forged a large number of super large forgings; For more than 50 years, it is still functioning normally and has made great contributions to the socialist construction.