Processing method of small-curvature and small-angle bent pipe

A processing method and small-angle technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of long cycle, high cost, inability to process small-curvature and small-angle pipe bending, and achieve the effect of simple method

Active Publication Date: 2011-05-18
ANHUI FUHUANG STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing pipe bending machines can only process bends with a radius of curvature R≥1500mm, and cannot process bends with small curvatures and small angles; customization must be cast into steel castings with molten steel, but this method has a long cycle and high cost

Method used

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  • Processing method of small-curvature and small-angle bent pipe
  • Processing method of small-curvature and small-angle bent pipe
  • Processing method of small-curvature and small-angle bent pipe

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Embodiment Construction

[0020] The processing method of the small-curvature and small-angle elbow in the present embodiment is to carry out as follows:

[0021] 1. Replace the arc section with shrimp tubes in each straight section, and take materials from the bent pipe 1 section to be each straight section;

[0022] b. For each straight pipe section, cut off a 2mm length at the left end as an assembly gap, and form a flat end at the left end; cut and form a 35° peripheral groove at the right end of each straight section;

[0023] c. If figure 2 As shown, on the steel plate platform 2, the projected center line a, the outer contour line b1, the inner contour line b2 and the port line c of each straight pipe section for assembling the bent pipe are marked according to the workpiece to be processed; specifically, on the steel plate platform The mark on the line is, first draw the line according to the arc, and then mark each straight line segment according to the equal division point; figure 2 The r...

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Abstract

The invention discloses a processing method of a small-curvature and small-angle bent pipe, which is characterized by comprising the following steps of: firstly replacing each straight pipe-section shrimp pipe by a circular-arc section, and segmenting the processed bent pipe into straight-pipe sections; marking a projection center line a, an outer side contour line b1, an inner side contour line b2 and a port line c of each straight pipe-section shrimp pipe for assembling the bent pip by using the processed member on a steel plate platform; sequentially positioning each straight pipe-section shrimp pipe from middle to both sides by using an angle rule; finally welding the neighboring straight pipe-section shrimp pipes in the integrally positioned straight pipe-section shrimp pipes to accomplish the connection between the neighboring straight pipe-section shrimp pipes; and then polishing edges of welding lines into smooth transition. In the method, the plurality of straight pipe-section shrimp pipes replace the circular-arc sections, the assembly of the small-curvature and small-angle bent pipe is accomplished by cutting, scribing and positioning, therefore the method is simple and rapid, and the processed small-curvature and small-angle bent pipe is especially suitable for serving as a transition section at the crossed position of two small-angle steel pipes.

Description

technical field [0001] The invention relates to a processing method for a small-curvature and small-angle elbow. Background technique [0002] Such as figure 1 As shown, small-curvature and small-angle bends in steel members generally refer to pipe fittings that are made of Q345B and below, with a radius of curvature R≤500mm and an angle of ≤50°, which cannot be bent by existing pipe benders. [0003] Existing pipe bending machines can only process bends with a radius of curvature R≥1500mm, and cannot process bends with small curvatures and small angles; customization must be cast into steel castings with molten steel, but this method has a long period of time and high costs. Contents of the invention [0004] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a method for processing bends with small curvature and small angle, so that in specific occasions, the processing of bends with a radius of curvature R≤500mm and an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K31/02
Inventor 魏朝波曹玉林
Owner ANHUI FUHUANG STEEL STRUCTURE
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