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A preparation process of ta3 titanium rod with low iron and high anticorrosion performance

A preparation process and technology for titanium rods, which are applied in the processing field of pure titanium rods, can solve the problems of difficulty in optimizing the anticorrosion properties of pure titanium, decline in mechanical properties of pure titanium, and reduction in the plasticity of pure titanium, and achieve low Fe content and grain size. Small, evenly textured effect

Active Publication Date: 2021-07-06
BAOJI YIXIN METALS PROD WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reducing the content of Fe can greatly improve the anti-corrosion performance of pure titanium, but the mechanical properties of pure titanium will decrease, so it is necessary to increase the content of O to prevent the decline of mechanical properties, and too high O content will reduce the plasticity of pure titanium , during forging, it is very easy to produce cracks, and it is difficult to optimize the anti-corrosion performance of pure titanium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation process of TA3 titanium rod with low iron and high anticorrosion performance, comprising the following steps:

[0025] Step 1: Vacuum Melting

[0026] The titanium sponge with Fe content of 0.04% was selected as the raw material for vacuum smelting, and the Fe content was 0.042%, the O content was 0.254%, and the specification was of titanium ingots;

[0027] Step 2: The first pier pull out deformation

[0028] The specifications after vacuum melting are Titanium ingots are heated to 1050°C in a natural furnace, then kept for 360min, and then shaped into Specifications, and then through the 3500T hydraulic press to carry out 3 times of reversing pier pulling, the pier pulling method is any direction pier pulling:

[0029] will be shaped to The titanium ingot of the specification is pierced to a height of about 500mm and the irregular shape of the titanium ingot, and then elongated to the size before the pier on any surface, and continues through t...

Embodiment 2

[0041] A preparation process of TA3 titanium rod with low iron and high anticorrosion performance, comprising the following steps:

[0042] Step 1: Vacuum Melting

[0043] The titanium sponge with Fe content of 0.04% was selected as the raw material for vacuum smelting, and the Fe content was 0.042%, the O content was 0.254%, and the specification was of titanium ingots;

[0044] Step 2: The first pier pull out deformation

[0045] The specifications after vacuum melting are Titanium ingots are heated to 1050°C in a natural furnace, then kept for 360min, and then shaped into Specifications, and then through the 3500T hydraulic press to pull the reversing pier 3 times, the pier pulling method is the same direction pier pulling:

[0046] will be shaped to The titanium ingot of the specification is lowered from one side to a titanium ingot with a height of about 500mm and an irregular shape, and then drawn from the lower pier to the size before the lower pier, and then r...

Embodiment 3

[0058] A preparation process of TA3 titanium rod with low iron and high anticorrosion performance, comprising the following steps:

[0059] Step 1: Vacuum Melting

[0060] Select sponge titanium with Fe content of 0.045% as raw material for vacuum smelting, and obtain Fe content of 0.053%, O content of 0.273% and the specification of of titanium ingots;

[0061] Step 2: The first pier pull out deformation

[0062] The specifications after vacuum melting are Titanium ingots were heated to 1080°C in a natural furnace, kept for 360min, and then shaped into Specifications, and then through the 3500T hydraulic press to carry out 3 times of reversing pier pulling, the pier pulling method is any direction pier pulling:

[0063] will be shaped to The titanium ingot of the specification is pierced to a height of about 500mm and the irregular shape of the titanium ingot, and then elongated to the size before the pier on any surface, and continues through two cycles of lowering ...

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Abstract

The invention discloses a preparation process of TA3 titanium rods with low iron and high anticorrosion performance, which belongs to the technical field of processing methods of pure titanium rods. Sponge titanium with a Fe content of 0.05% is selected as a raw material through S1 vacuum smelting and S2 for the first time. The mechanical properties of pure titanium rods are improved by the processing steps of piercing deformation, S3 first piercing deformation, S4 elongation, S5 rolling and S6 annealing. In the case of low Fe content, through the subsequent forging process, the balance of mechanical properties is maintained at the same time; at the same time, a large amount of deformation is used in forging, so that the grains of the bar are finer and the structure is more uniform, thereby obtaining a low Fe content. , high corrosion resistance, but also has high mechanical properties.

Description

technical field [0001] The invention relates to the technical field of processing methods for pure titanium rods, in particular to a preparation process of a TA3 titanium rod with low iron and high corrosion resistance. Background technique [0002] In order to improve the mechanical properties of pure titanium, Fe and O elements are generally added in the processing process, and pure titanium has different mechanical properties according to the amount of Fe and O added. The industry standard for finished TA3 titanium rods is GB / T2965 -2007, the minimum value of its main mechanical properties are as follows: tensile strength is 500MPa, plastic elongation strength is 380MPa, expansion rate after fracture is 18%, end face shrinkage rate is 30%; chemical composition standard meets GB / T2965-2007 implementation GB / T3620 .1, in which the maximum content of the main components Fe and O is 0.30% and 0.35%, respectively. Reducing the content of Fe can greatly improve the anti-corros...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C22B9/04C22B34/12
CPCC22B9/04C22B34/1295C22F1/183
Inventor 孙子城孙敏段晓辉
Owner BAOJI YIXIN METALS PROD WORKS
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