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Manufacturing method for ball valve with flange

A manufacturing method and technology of flanged ball valves, applied in valve devices, metal rolling, metal processing equipment, etc., can solve the problems of inability to forge out the middle cavity of the valve, inability to forge out the cavity, waste of materials, etc. The effect of high utilization rate, high production efficiency and short process flow

Inactive Publication Date: 2018-04-06
SICHUAN KAITZ VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In the production of valves, due to the traditional forging method, the middle cavity of the valve cannot be forged. In order to save costs, such valve body blanks are basically manufactured by casting.
Therefore, there will be many problems. One is that the cavity cannot be forged and needs to be completed by machining; the other is that the material waste is serious. The cavity formed by machining and the cut off flash are all waste. Extremely low, bringing great burden to the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The following specific examples further illustrate the present invention.

[0028] A method for forming a flanged ball valve body forging, comprising the following steps:

[0029] Body Manufacturing:

[0030] A1. Cutting: Use a bar shearing machine to cut the material according to the design size of the valve body, and put the cut bar into the heating furnace to heat to the initial forging temperature; the initial forging temperature is 950°C-1200°C.

[0031] A2. Billet making: put the rough billet obtained by heating in step A1 into the lower die 1 of the billet making mold, and the upper punch 6 moves downward to press the material into the shape of the billet, and then use the ejector rod to move upward Take out the prepared blank; the ejector rod moves upward, pushes the backing plate and drives the workpiece to move upward, pushes the workpiece out of the lower die, takes out the workpiece, and completes a working cycle.

[0032] A3. Dividing: put the prepared bl...

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Abstract

The invention discloses a manufacturing method for a ball valve with a flange. The manufacturing method comprises the following steps of valve body manufacturing and end cover manufacturing, a manufactured valve body and a manufactured end cover are welded, and cooling water is introduced into the valve body during welding to protect a sealing ring. According to manufacturing method, by changing the manufacturing process, the purposes of reducing waste and improving economic benefits are achieved by reducing the consumption of blanks.

Description

technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to a method for manufacturing a ball valve with a flange. Background technique [0002] In the prior art, the ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. The closing part is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. [0003] In valve manufacturing, due to the traditional forging method, the middle cavity of the valve cannot be forged. In order to save costs, such valve body blanks are basically manufactured by casting. Therefore, there will be many problems. One is that the cavity cannot be forged and needs to be completed by machining; the other is that the material waste is serious. The cavity formed by machining and the cut off flash are all waste. Very low, which brings a great burden to the enterprise. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J5/02B21J5/08B21H1/06B21K1/24B21K1/20
CPCB21J5/002B21H1/06B21J5/02B21J5/08B21K1/20B21K1/24
Inventor 吴雪邱晓峰袁伟
Owner SICHUAN KAITZ VALVE MFG
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