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Method for manufacturing welding neck flange in high-pressure switch

A technology of high-neck flange and high-voltage switch, which is applied in the field of high-voltage switch high-neck flange manufacturing, can solve the problems of high production cost, short service life, low forming precision, etc., and achieve improved yield, reduced production cost, and improved The effect of processing efficiency

Active Publication Date: 2013-10-09
SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a simple, reasonable and high-efficiency manufacturing method for the high-neck flange of the high-voltage switch to overcome the existing forming process. Defects of low forming precision, poor consistency, short service life and high production cost

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  • Method for manufacturing welding neck flange in high-pressure switch
  • Method for manufacturing welding neck flange in high-pressure switch
  • Method for manufacturing welding neck flange in high-pressure switch

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] see Figure 2 to Figure 5 , the equipment used in the specific implementation of the present invention is a 1000T press and a CZ450 / 3CNC numerically controlled powerful spinning machine. The manufacturing method of the high-neck flange in this high-voltage switch adopts the flanging process in combination with the spinning forming process, and the flat ring blank is directly Forming into a high-voltage switch high-neck flange part, the forming process includes the following steps:

[0028] The machining process is used to finish the ring forging blank, and the blank is processed into a ring blank with an outer diameter of 480mm, an inner diameter of 320mm and a wall thickness of 30mm, and the circular arc radius of the chamfered end of the inner hole port of the processed ring blank is 2mm, and the arc radius of the chamfer at the other end is 10mm;

[0029] Unifor...

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Abstract

The invention discloses a method for manufacturing a welding neck flange in a high-pressure switch, comprising the step of directly forming a flat annular blank into a welding neck flange component of a high-pressure switch by combining a flanging technique with a spin forming technique. The method for manufacturing a welding neck flange in a high-pressure switch disclosed by the invention has the advantages of high yield, high processing efficiency, low production cost, long service life of product etc.

Description

technical field [0001] The invention relates to a method for manufacturing a high-neck flange, in particular to a method for manufacturing a high-neck flange in a high-voltage switch. Background technique [0002] At present, the commonly used high-voltage switch high-neck flange is a split type, that is, the flange and the cylinder are processed separately, and then the flange and the cylinder are welded into one body by welding process, specifically as follows figure 1 shown. The high neck flange produced by this manufacturing method has the following main defects: 1. The welding area between the flange and the cylinder is prone to stress concentration, which reduces the fatigue strength of the product and affects the service life of the product; 2. During the welding process Medium-sized products are prone to deformation, which directly affects the forming accuracy and consistency of the product; 3. After the welding is completed, the internal surface welds of the produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D35/00B21D19/12B21D22/16
Inventor 马飞邓强李志远胡莉巾
Owner SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD