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A Hole Opening Method for Rare Metal Thin-walled Tubes

A technology for rare metal and thin-walled tubes, which is applied in the field of opening metal tubes and rare metal thin-walled tubes. It can solve the problems of large residual stress, large diameter and thick openings, and difficulty in large-area openings. Effects of reducing deformation, avoiding oxidation, and reducing residual processing stress

Active Publication Date: 2019-05-28
XIAN UNITED PRESSURE VESSEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a method for opening holes of rare metal thin-walled pipes, which can solve the problems of easy deformation of rare metal thin-walled pipes during the hole opening process and difficulty in large-area opening. , The problem of excessive residual stress after opening, especially suitable for rare metal pipes with large diameter and thickness and a large number of openings

Method used

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  • A Hole Opening Method for Rare Metal Thin-walled Tubes
  • A Hole Opening Method for Rare Metal Thin-walled Tubes
  • A Hole Opening Method for Rare Metal Thin-walled Tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Titanium tube opening:

[0033] Step 1. Rare metal tube 1 (material: titanium, specification: length 150mm);

[0034] Step 2, cutting the steel pipe 2 (the material is: steel, the specification is: length 200mm), the inner diameter of the car steel pipe 2 to Both ends of the car are flush;

[0035] Step 3: Use an oxyacetylene flame to uniformly heat the rare metal tube 1 to 180° C. to 200° C. During the heating process, do not stay in one place for too long to avoid local oxidation. The heated rare metal pipe 1 is completely inserted into the outside of the unheated steel pipe 2, and the distance between the two ends of the rare metal pipe 1 and the two ends of the steel pipe 2 is 25mm. Such as figure 1 As shown, according to the drawing processing requirements of the rare metal tube 1, on the rare metal tube 1, use the vertical machining center to carry out 240 Hole processing, during the processing, it is necessary to ensure that each hole on the rare meta...

Embodiment 2

[0039] Slotted zirconium tube opening:

[0040] Step 1. Cut the lower plate material (material: zirconium, specification: 490×300×3mm), and form it into a rare metal tube 1 (specification: length 300mm);

[0041] Step 2: Cut the lower plate material (material: steel, specification: 462×350×12mm), and form it into a steel pipe 2 (specification: length 200mm), the inner diameter of the car steel pipe 2 to Both ends of the car are flush;

[0042] Step 3: Use an oxyacetylene flame to uniformly heat the rare metal tube 1 to 180° C. to 200° C. During the heating process, do not stay in one place for too long to avoid local oxidation. The heated rare metal pipe 1 is completely inserted into the outside of the unheated steel pipe 2, and the distance between the two ends of the rare metal pipe 1 and the two ends of the steel pipe 2 is 25 mm. Such as figure 1 As shown, according to the drawing processing requirements of the rare metal tube 1, on the rare metal tube 1, use a ...

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Abstract

The invention provides a hole opening method for a thin-walled rare metal pipe. The hole opening method comprises the steps as follows: a steel pipe is nested in a rare metal pipe after the rare metal pipe is heated, then the rare metal pipe nested with the steel pipe is subjected to hole opening processing, after hole opening, the whole rare metal pipe nested with the steel pipe is subjected to annealing, the rare metal pipe and the steel pipe are separated after annealing, and the hole-opened rare metal pipe is obtained. According to the method, the problems that the thin-walled rare metal pipe is prone to deformation in a clamping process during hole opening, large-scale hole opening is difficult and residual stress after hole opening is overlarge are effectively solved, and the method is particularly applicable to rare metal pipes with the higher radius-thickness ratio and the larger opening number.

Description

technical field [0001] The invention belongs to the technical field of metal tube processing, and relates to a method for opening holes in metal tubes, in particular to a method for opening holes in rare metal thin-walled tubes. Background technique [0002] In the prior art, the method of drilling holes for metal pipes is usually to firstly mark the hole positions, and then clamp and drill the holes on an ordinary drilling machine. However, for thin-walled pipes, if the processing method of the prior art is used, the thin-walled pipe will be clamped and flattened during the clamping process. During the drilling process, due to the thinner pipe wall, the edge of the hole is prone to tearing. After drilling, Due to springback, the size of the hole will change and cannot meet the size required by the drawing. If the thin-walled tube requires a large number of openings, the processing is more difficult, and it is even more difficult to process qualified products. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 袁敏哲郗大来叶建林王娅辉纪腾飞王宁李宁孙万仓石养鑫
Owner XIAN UNITED PRESSURE VESSEL CO LTD
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