High-strength and fatigue-resistant titanium ring and preparing method thereof

A fatigue-resistant and high-strength technology, applied in the field of titanium ring materials, can solve the problems of low efficiency, inconsistent lines, time-consuming and labor-intensive, etc., and achieve the effect of high efficiency, clear grain boundaries, and ensuring consistency and stability.

Inactive Publication Date: 2017-08-04
郭和谦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ring prepared by this method needs to be determined by a knurling knife. It needs to be knurled several times. The efficiency is low, and it is easy to have inconsistent lines after knurling, which is time-consuming and labor-intensive. Moreover, titanium alloy rings are often subjected to external impact and repeated fatigue. Titanium alloys are required to have excellent dynamic load-carrying capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Using 0-grade sponge titanium, pure Al with a purity >99%, pure Cr with a purity >99%, Al-85Mo master alloy, Al-85V master alloy, and Ti-32Mo master alloy as ingredients, the purity is greater than 99%. The consumable electrode is smelted in a vacuum consumable electric arc furnace twice to make a Ti-Al-Mo-V-Cr alloy ingot, wherein the weight percentage of each component in the Ti-Al-Mo-V-Cr alloy ingot is Al: 3.5%, V: 6%, Cr: 6%, Mo: 5%, impurity content < 0.2%, and the rest is Ti alloy, the mass ratio of primary α phase in the Ti alloy is 8%, and the primary The ratio of the horizontal and vertical directions of the striped α phase is 1-2.5.

[0026] (2) The Ti-Al-Mo-V-Cr alloy ingot was billeted at 1050°C, with a deformation of 60%. After several times of cooling and reversing forging, the final forging temperature was 760-810°C, and the accumulated deformation was 80%. , and made into a 900×75×35mm square rod Ti ingot.

[0027] (3) Forge the Ti ingot into a bi...

Embodiment 2

[0030] (1) Using 0-grade sponge titanium, pure Al with a purity >99%, pure Cr with a purity >99%, Al-85V master alloy, and Ti-32Mo master alloy ingredients, the purity is greater than 99% and pressed into a consumable electrode. Secondary vacuum consumable electric arc furnace smelting to make Ti-Al-Mo-V-Cr alloy ingot, wherein the weight percentage of each component in the Ti-Al-Mo-V-Cr alloy ingot is Al: 4%, V: 5%, Cr: 6%, Mo: 5%, impurity content <0.2%, and the rest is Ti alloy, which contains primary α phase in a mass ratio of 15%, and the transverse The longitudinal ratio is 1-3.

[0031] (2) The Ti-Al-Mo-V-Cr alloy ingot was billeted at 1050°C, with a deformation of 60%. After several times of cooling and reversing forging, the final forging temperature was 760-780°C, and the accumulated deformation was 75%. , made of φ18mm rod Ti ingot.

[0032](3) Forge the Ti ingot into a billet of 170×60mm, roll it to a thickness of 5.6mm in one direction, level it after annealing ...

Embodiment 3

[0035] (1) Using 0-grade sponge titanium, pure Al with a purity >99%, pure Cr with a purity >99%, Al-85Mo master alloy, Al-85V master alloy, and Ti-32Mo master alloy as ingredients, the purity is greater than 99%. The consumable electrode is smelted in a vacuum consumable electric arc furnace twice to make a Ti-Al-Mo-V-Cr alloy ingot, wherein the weight percentage of each component in the Ti-Al-Mo-V-Cr alloy ingot is It is Al: 4.5%, V: 6%, Cr: 6%, Mo: 5%, impurity content <0.2%, and the rest is Ti alloy. The mass ratio of the primary α phase in the Ti alloy is 3.5%. The ratio of the horizontal and vertical directions of the striped α phase is 2-3.

[0036] (2) The Ti-Al-Mo-V-Cr alloy ingot was billeted at 1050°C, with a deformation of 60%. After several times of cooling and reversing forging, the final forging temperature was 760-790°C, and the accumulated deformation was 85%. , and made into a 30×30×1000mm plate Ti ingot.

[0037] (3) Forge the Ti ingot into a billet of 170...

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Abstract

The invention provides a high-strength and fatigue-resistant titanium ring and a preparing method thereof. The high-strength and fatigue-resistant titanium ring is Ti-Al-Mo-V-Cr series alloy, wherein Ti alloy comprises a primary alpha phase of which the transverse-to-longitudinal ratio is 1-3. The preparing method specifically comprises: adopting sponge titanium, pure Al, pure Cr, Al-Mo intermediate alloy, Al-V intermediate alloy and Ti-Mo intermediate alloy as raw materials, pressing the materials into a consumable electrode under the condition that the purity is larger than 99%, and making a Ti-Al-Mo-V-Cr alloy ingot through the two-times smelting of a vacuum consumable electro-arc furnace; then, through cogging, deforming and repeated upsetting and drawing which are carried out at temperature lowered to 750-820DEG C, making a Ti ingot bar or plate after the accommodated deformation quantity is larger than 70%; after forging, rolling, heat treatment, levelling and machining, making a titanium plate; washing the titanium plate to remove dirt on the surface; then, engraving the grid surface of the titanium plate by using laser, and rolling the engraved titanium plate into the titanium ring by using a rolling machine; and finally carrying out washing and drying to obtain the high-strength and fatigue-resistant titanium ring.

Description

technical field [0001] The invention belongs to the technical field of titanium ring materials, and in particular relates to a high-strength fatigue-resistant titanium ring and a preparation method thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s, because of its light weight, high strength, corrosion resistance, heat resistance, non-magnetic and other excellent properties, as well as shape memory, superconductivity, hydrogen storage, biophase Capacitive four unique features. According to the amount of β-stabilizing elements added to titanium and the structure after annealing, titanium and titanium alloys are divided into three categories: α-titanium alloys, β-titanium alloys, and α+β-titanium alloys, which have high specific strength and good corrosion resistance. Advantages, has been widely used in aviation, aerospace, vehicle engineering and biomedical engineering and other fields. High-strength and high-toughness ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/03C22F1/18C23G1/10C23F1/26B23K26/362B23P15/00
CPCC22C14/00B23K26/361B23P15/00C22C1/03C22F1/183C23F1/26C23G1/106
Inventor 郭和谦
Owner 郭和谦
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