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A compound processing method for titanium alloy thin-walled precision profiles

A composite processing, titanium alloy technology, applied in the field of aviation manufacturing, to achieve the effect of filling the gap of varieties

Active Publication Date: 2020-12-18
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In China, there is still no processing method for titanium alloy thin-walled profiles that can meet the requirements of technical conditions, control economic costs, and easily realize small batch production.

Method used

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  • A compound processing method for titanium alloy thin-walled precision profiles
  • A compound processing method for titanium alloy thin-walled precision profiles

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Embodiment 1

[0026] Embodiment one, according to the composite processing method of titanium alloy thin-walled precision profiles of the present invention, it can be seen that figure 1 , this embodiment is to process TA15 titanium alloy thin-walled profiles, the profile section see figure 2 , the detailed method steps are as follows:

[0027] Step 1. Preparation of extruded billet: the extruded billet is opened and forged in the single-phase area, and the finished product is forged in the two-phase area, and processed into a φ160mm billet, so that the extrusion ratio of the profile is about 110, and the surface roughness of the billet is ≤6.4μm , the ellipticity of outer diameter≤0.5mm;

[0028] Step 2. Extrusion of the parison: Design the L profile mold with an acute angle of 82°, the wall thickness allowance is 0.2mm on each side, the preheating temperature of the extrusion mold is 200°C-450°C, the extruded billet is coated with an anti-oxidation coating, and the heating temperature is...

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Abstract

The invention belongs to the technology of aviation manufacture, especially relating to a composite processing method for thin-walled precision profiles of titanium alloy. The composite processing method for thin-walled precision profiles of titanium alloy comprises the following concrete steps: preparation of extruding rod blank, extrusion of profile blank, rolling of profiles, heat treatment ofprofiles and finishing of profiles. The method is suitable for development of low-strength and medium-strength titanium alloy thin-walled profiles and can be publicized and applied to high-strength titanium alloy thin-walled profiles. Serialization of semi-finished titanium alloy thin-walled profiles is formed and fills the gap of variety of national titanium alloy.

Description

technical field [0001] The invention belongs to the aviation manufacturing technology, and in particular relates to a composite processing method for thin-walled precision profiles made of titanium alloy. Background technique [0002] It is very difficult to produce thin-walled precision profiles of titanium alloys, and the preparation technology of thin-walled precision profiles of titanium alloys has not been fully mastered in China. In China, the extrusion method is used for the development of titanium alloy thin-walled profiles. The mechanical properties of the profiles can meet the technical requirements, but the profiles have problems such as difficult to control deformation, large surface roughness, and poor dimensional accuracy; rolling methods are used for titanium alloy thin-walled profiles. The development of wall profiles has improved the mechanical properties, surface roughness and dimensional accuracy of the profiles, but the rolling process is complicated, req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 贺飞杨旭陈冬梅李海涛徐哲柏春光
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA