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Manufacturing method of small aperture metal bend for pipe

A manufacturing method and small-caliber technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve problems such as large impact, unfavorable, vibration, etc.

Inactive Publication Date: 2006-01-11
SHANGHAI NO 1 IRON & STEEL CO LTD BAOGANG GRP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The minimum value of the radius of the metal elbow manufactured by these equipment is limited by the material, diameter and wall thickness of the pipe, and cannot be made small enough to meet the requirements of the small-diameter corner of the pipe in the fluid delivery system in special occasions. Use right-angle joints instead of small-bore elbows
However, the fluid has a certain impact on the corner of the right-angle elbow, especially the high-pressure, high-speed flowing fluid, which has a considerable impact on the corner of the right-angle elbow, and sometimes produces a lot of vibration, which is harmful to the fluid delivery system and for it. Unfavorable, and the volume of the right-angle elbow is larger than that of the curved elbow

Method used

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  • Manufacturing method of small aperture metal bend for pipe
  • Manufacturing method of small aperture metal bend for pipe
  • Manufacturing method of small aperture metal bend for pipe

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Experimental program
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Embodiment Construction

[0020] see Figure 1 to Figure 9 , The manufacturing method of the small-diameter metal elbow of the present invention: its main process is: taking material, forging, finishing, splitting, pairing, welding, grinding, taking the elbow of the required angle, and cutting the weld.

[0021] The details are as follows: Take the production of 180-degree elbow as an example, such as figure 1 , figure 2 As shown, first select a suitable material, and forge it into a blank 100 for metal cutting; press image 3 Turning is required for the size of the elbow 200 to be manufactured, where r1 is the radius of the inner arc of the elbow, r2 is the radius of the outer arc of the elbow, r3 is the radius of the inner arc of the inner hole of the elbow, and r4 is the outer arc of the inner hole of the elbow Radius, D is the outer diameter of the elbow, and d is the inner diameter of the elbow; the blank 100 is turned into a semicircular annular body, such as Figure 4 As shown, the radius of...

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Abstract

A method for manufacturing small-diameter metallic elbow pipe includes such steps as providing proper raw material, forging, turning to become semi-circular annular body, symmetrically and radial splitting to obtain to semi-circular bodies, closing both together, welding and trimming welded seams.

Description

technical field [0001] The invention relates to a method for manufacturing a metal elbow, in particular to the manufacture of a small-diameter metal elbow. Background technique [0002] Bends are indispensable in pipelines conveying media such as liquids, gases or colloids to change the direction of the pipeline. In special occasions, the radius of the elbow is required to be small enough. Traditional metal elbows are generally manufactured by specialized bending equipment or stamping equipment. The minimum value of the radius of the metal elbow manufactured by these equipment is limited by the material, diameter and wall thickness of the pipe, and cannot be made small enough to meet the requirements of the small-diameter corner of the pipe in the fluid delivery system in special occasions. Use right-angle joints instead of small-bore elbows. However, the fluid has a certain impact on the corner of the right-angle elbow, especially the high-pressure, high-speed flowing fl...

Claims

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Application Information

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IPC IPC(8): B23P13/00B23P23/04
Inventor 顾国铭
Owner SHANGHAI NO 1 IRON & STEEL CO LTD BAOGANG GRP
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