Steel ball According to the production and processing technology, steel ball is divided into grinding ball, forging ball, casting ball. According to the processing materials are divided into bearing steel ball, stainless steel ball, carbon steel ball, copper bearing steel ball, alloy ball, etc. The bearing steel ball are important basis parts for industry, alloy […]
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.
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