Analysis of valve ball forming technology: (1) casting process (2) forging  (3) the spinning method..

The ball of the ball valve is floating, under the pressure of the medium, the ball can produce a certain displacement and pressed on the end of the sealing surface, to ensure that the end of the export seal.

in order to ensure the sphere machining accuracy and surface quality conform to the requirements of the drawings, valve to obtain excellent sealing performance and low operating torque, prolong the service life of the valve, this paper introduces the use of the center hole as a sphere turning and grinding the same positioning datum, by making a reasonable processing technology, ensure that all the form tolerance and position precision machined part drawings design requirements.

Forging of valve ball，The ball is a heavy part of the valve, as shown in Figure 1). Besides high corrosion resistance, it also requires high strength. Therefore, our factory adopts OCr17Ni12Mo2 austenitic stainless steel for die forging.

Ball valve, opening and closing part (valve ball) driven by the valve stem and rotating around the ball valve axis. Can also be used for fluid regulation and control, hard sealing V-type ball valve v-type ball core and hardfaced metal valve seat has a strong shear force, especially suitable for containing fiber, small solid particles and other media. The multi-pass ball valve in the pipeline can not only flexibly control the confluence of media, shunt, and flow direction switch, but also close any channel and make the other two channels connected. This class of valves should generally be installed horizontally in the pipeline. Ball valves are divided into pneumatic ball valves, electric ball valves and manual ball valves. Driving mode Manual, electric, pneumatic, hydraulic applications in the field of food, chemical, petroleum, electric, and other operating principles of the valve stem drive rotary movement around the ball valve

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