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Pipe straightening control system and method and application of pipe straightening control method to titanium alloy pipe straightening

A control method and control system technology, applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problem that titanium alloy special-shaped pipes cannot be straightened, and achieve the elimination of work hardening and residual stress, excellent mechanical properties, and effects. good effect

Inactive Publication Date: 2020-07-10
西安圣泰金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the above analysis, the problems and defects of the existing technology are: the current pressure straightening, roller straightening and tension straightening can not achieve straightening for titanium alloy special-shaped pipes with large length-diameter ratio and severe torsion
[0005] The difficulty of solving the above problems and defects is: the straightening process must solve the problems of straightness and torsion at the same time

Method used

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  • Pipe straightening control system and method and application of pipe straightening control method to titanium alloy pipe straightening
  • Pipe straightening control system and method and application of pipe straightening control method to titanium alloy pipe straightening

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Effect test

Embodiment 1

[0047] TC4 titanium alloy 50 * 50mm provided by the invention, wall thickness 3.5mm, the seamless square tube of length 3000mm, straightening method comprises the following steps:

[0048] (1) Select a square fixture and fix the two ends of the 3000mm long titanium alloy square pipe on the straightening equipment.

[0049] (2) The left clamp is fixed, and the right clamp fixture starts to move along the axis direction to ensure that the two ends of the square tube are tightened.

[0050] (3) Turn on the power and start heating. When the infrared temperature measurement system feeds back that the temperature of the square tube body reaches 700°C, keep it warm for 5 minutes.

[0051] (4) While maintaining the tension, the left and right clamps start to rotate along the normal direction of the section, so that the sections at both ends of the square tube overlap as much as possible.

[0052] (5) Turn off the power, and air-cool the titanium alloy square tube to room temperature. ...

Embodiment 2

[0056] The TA18 titanium alloy oval pipe 40 * 60mm that the present invention provides, wall thickness 4mm, the seamless pipe material of length 2000mm, straightening method comprises the following steps:

[0057] (1) Select the oval clamp, and fix the two ends of the 2000mm long titanium alloy oval pipe on the straightening equipment.

[0058] (2) The left clamp is fixed, and the right clamp fixing device starts to move along the axis direction, and the two ends of the elliptical tube are taken and tightened.

[0059] (3) Turn on the power and start heating. When the infrared temperature measurement system feedbacks that the temperature of the oval tube reaches 650°C, keep it warm for 5 minutes.

[0060] (4) While maintaining the tension, the left and right clamps start to rotate along the normal direction of the section, so that the sections at both ends of the oval tube overlap as much as possible.

[0061] (5) Turn off the power, and air-cool the titanium alloy oval tube ...

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Abstract

The invention belongs to the technical field of titanium alloy pipe straightening, and discloses a pipe straightening control system and method and application of the pipe straightening control methodto titanium alloy pipe straightening. The two ends of a special-shaped pipe are clamped through a clamping device, the left end is fixed, the right end can be moved on a platform, and thus, the pipehas certain tension; and heating is conducted through an electric contact heating mode, residual stress of the titanium alloy special-shaped pipe is removed, meanwhile, under the tension condition, clamping heads at the two ends can be rotated, stress is thoroughly released, torsion of the pipe is eliminated, then, the tension and rotation angle are kept, the special-shaped pipe is cooled to the indoor temperature, fixtures at the two ends are dissembled, and straightening is completed. The torsion angle of the straightened titanium alloy special-shaped pipe is smaller than 1 degree; the straightening mode with drawing and rotating being conducted at the same time is adopted, and the problem that a high-torsion-degree titanium alloy special-shaped pipe is difficult to straighten is effectively solved; and by adopting electric heating straightening, work hardening and residual stress in the machining process of the titanium alloy special-shaped pipe are eliminated, and the problems of residual strain and resilience in the pressure straightening process are solved.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy pipe straightening, and in particular relates to a pipe straightening control system and method and an application in titanium alloy pipe straightening. Background technique [0002] Due to the advantages of high specific strength, excellent corrosion resistance, and non-magnetic properties of titanium alloys, the piping systems and pressure vessels prepared with it are widely used in aviation, aerospace, ships, nuclear industry, petroleum, chemical and other fields. application. Titanium alloy special-shaped pipe is a near-net-shape semi-finished product with less machining allowance, high structural benefit, excellent comprehensive performance, and great market potential. [0003] At present, the production methods of titanium alloy special-shaped pipes mainly adopt extrusion forming, drawing forming and rolling forming, and the forming process is affected by factors such as deformation ...

Claims

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Application Information

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IPC IPC(8): B21D3/00B21D37/16B21D43/00B21C51/00
CPCB21C51/00B21D3/00B21D37/16B21D43/003
Inventor 贺峰曹继敏樊亚军王戈石金虎
Owner 西安圣泰金属材料有限公司
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