Manufacturing process of ball valve ball

Abstract

The invention discloses a manufacturing process of a ball valve ball, and belongs to the technical field of ball valve ball manufacturing. The manufacturing process of the ball valve ball comprises the following steps of casting forming, mold opening for taking out, slotting, polishing, cleaning and surface spraying. A die mechanism comprises a lower die and an upper die, a hemispherical lower diecavity is formed in the outer wall of the top of the lower die, a cylindrical lower column core is fixedly connected to the middle of the lower die cavity, an upper die cavity matched with the lowerdie cavity is formed in the outer wall of the bottom of the upper die, and an upper column core matched with the lower column core is fixedly connected to the middle of the upper die cavity. Through the arrangement of the die mechanism special for casting forming of the ball valve ball and an extraction mechanism used in cooperation, after casting forming is carried out, a blank ball body is convenient to take out, production losses are reduced, and the production efficiency is improved; and in the casting forming process, a middle through hole is integrally formed, the subsequent punching procedure is reduced, and the working efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of ball valve ball manufacturing, and more specifically, relates to a ball valve ball manufacturing process. Background technique [0002] Valves are widely used in modern society. Especially in the technical field of plumbing pipe fittings, there are many kinds of valves in the prior art, mainly ball valves, angle valves, globe valves, etc., wherein the structure of the ball valve is relatively simple, mainly because the ball of the ball valve is relatively simple. The sphere of the ball valve has a symmetrical spherical structure as a whole, and there is a cylindrical through hole in the middle. At the center of the outer spherical surface of the sphere, there is a stem groove connected to the valve stem. When working, turn the valve stem Align the cylindrical through hole of the sphere with the inlet and outlet of the ball valve, and when it stops working, reversely turn the valve stem so that the spheri...

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Problems solved by technology

[0003] Casting method is the traditional and most common ball valve ball manufacturing process. Casting molding is a relatively important process in the casting method. It is related to the quality of the ball body and the difficulty of subsequent processing. In the prior art, casting In the process of ball valve sphere, it is difficult to take out the rough sphere after casting, and the process of taking out the rough sphere is easy to cause damage to the sphere, large loss and low production efficiency

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