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Ball valve machining method

A processing method and ball valve technology, applied in the field of mechanical processing, can solve the problems of high production cost, low production efficiency, inability to meet the user's demand for mass product delivery, etc., to reduce production costs, efficient operation, and reduce inner hole finishing. effect of work

Inactive Publication Date: 2019-06-11
ZIGONG CEMENTED CARBIDE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production efficiency of conventional wire-cut electric machining cemented carbide products is very low, and the daily output of a single equipment is less than 3 pieces, which is far from meeting the delivery needs of users for batch products, and the production cost is extremely high

Method used

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  • Ball valve machining method
  • Ball valve machining method
  • Ball valve machining method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing:

[0022] This embodiment takes the machining of a cemented carbide ball valve as an example to give a detailed explanation of the method for machining the outer circle and inner hole of a cemented carbide ball valve provided by the present invention.

[0023] In this embodiment, the process dimensions of the cemented carbide ball valve with the inner hole and the outer circle are as follows: the outer circle size of the cemented carbide ball valve is required to be SΦ45+(0~0.02)mm, the roughness is Ra0.025, and the inner hole size is required to be Φ25+(0 ~0.2) mm.

[0024] The method for processing the above-mentioned cemented carbide ball valve provided in this embodiment includes the following steps:

[0025] (1), the production of carbide ball valve blanks with inner holes such as figure 2 , 3 As shown, there is a machining allowance in the design size of the inner ho...

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Abstract

The invention belongs to the field of machining, and relates to a ball valve machining method. In order to solve the technical problems of reserving of threading small holes through linear cutting inmachining of an existing cemented carbide ball valve and large-margin subsequent machining, and the provided quick and low-cost machining method of a cemented carbide ball valve comprises the following steps: a special plug head is manufactured, the plug head comprises a body, the body is matched with an inner hole of a ball valve blank in shape, the two ends of the body are arc surfaces, and thearc surfaces are matched with the outer surface of the ball valve blank in shape; the plug head is embedded into the inner hole of the ball valve blank, and the body of the plug head is in enhanced fixed connection with the ball valve inner hole through an adhesive; a complete spherical surface is formed on the outer surface of the ball valve; according to a conventional ball body grinding mode, the outer surface of the ball valve is ground to ensure the high-accuracy requirements for roundness; and the plug head in the ball valve is taken out, and according to the conventional grinding mode,the ball valve inner hole is ground to meet the process standard requirements. Through the machining method, the more efficient production mode and the lower production and manufacturing costs are achieved.

Description

technical field [0001] The invention belongs to the field of mechanical processing and relates to a processing method for a ball valve. Background technique [0002] Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis. With the rapid development of industry, higher requirements for high temperature resistance and wear resistance are also put forward for various ball valve products. Therefore, the current ball valve products are gradually turning to the promotion and application of solid carbide products from the alloy material sprayed on the surface of the steel ball. [0003] In order to meet the higher requirements of use, that is, to ensure ...

Claims

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Application Information

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IPC IPC(8): B24B11/02B24B41/00
Inventor 苏伟颜娟叶茂
Owner ZIGONG CEMENTED CARBIDE CORP
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