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Manufacturing method of steel welded oblique tee pipe fittings

A technology of an inclined three-way pipe and a manufacturing method, which is applied in the field of steel welded inclined three-way pipe fittings, and can solve the problems of unfavorable safe use and increased fluid resistance of the inclined three-way pipe fittings.

Active Publication Date: 2017-04-12
HEBEI FOCUS PIPING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These are not conducive to the safe use of oblique tee fittings, and also increase fluid resistance

Method used

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  • Manufacturing method of steel welded oblique tee pipe fittings
  • Manufacturing method of steel welded oblique tee pipe fittings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Such as figure 1 As shown, the branch pipe mold is designed and manufactured according to the drawing of the inclined three-way pipe. The lower section of the mold is the same as the outer diameter of the main pipe of the inclined three-way pipe fitting, and the upper section is the same as the inner diameter of the branch pipe of the inclined three-way pipe fitting. The transition between the upper and lower sections is smooth and smooth. axially at a certain angle.

[0008] Such as figure 1 As shown, fix the mold 2 on the lower platform 3 of the hydraulic press, clamp the branch pipe 4 with a designed length and angle cut on the upper platform 1 of the hydraulic press, place the intermediate frequency heating coil on the predetermined heating place at the inclined end of the branch pipe, and start the intermediate frequency machine Heat the pipe end to a predetermined temperature, remove the intermediate frequency heating coil, start the upper cylinder of the hydraul...

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Abstract

The invention relates to a novel manufacturing technology for a steel-made welded tilted three-way pipe, and the steel-made welded tilted three-way pipe is applied to pipelines, and the included angles of branch pipes and a main pipe are 30 DEG, 45 DEG and 60 DEG. The technological characteristics comprise firstly manufacturing a die according to layout design of the tilted three-way pipe; heating one end of a branch pipe, and when a preset temperature is reached, switching on a hydraulic machine to perform hot extrusion on one end of the branch pipe, so as to enable the end of the branch pipe to gradually turn outwards in the die, wherein the formed outward-turned edge face has a profile same to the profile of the main pipe, has a certain angle to the branch pipe and has smooth transition with the branch pipe; after molding is finished, cutting off superfluous parts at the outside of the outward-turned edge surface of the branch pipe, and lining and opening a mouth at a predetermined part of the main pipe; and then welding the branch pipe to the main pipe to form the steel-made welded tilted three-way pipe with smooth transition at the intersection line of the main pipe and the branch pipe.

Description

technical field [0001] The invention is a kind of manufacturing method of a new type of steel welded oblique tee pipe fitting formed by hot extrusion to form the flange of the branch pipe, and then welding the flange of the branch pipe and the main pipe at a certain angle. Steel welded oblique tee fittings with angles of 30°, 45°, and 60° to the main pipe. Background technique [0002] The current steel welded oblique tee fittings are generally on the main pipe, and the saddle is opened according to the intersection line of the branch pipe and the main pipe, and then the branch pipe is cut according to the intersection line of the branch pipe and the main pipe, and then the branch pipe and the main pipe are welded at the intersection line. , forming steel welded oblique tee fittings. The oblique tee pipe fittings manufactured by this method have stress concentration at the intersection line, especially the similar fillet weld formed by welding, which makes the fluid form im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/15B21C37/08
Inventor 赵伟星
Owner HEBEI FOCUS PIPING
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