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Preparation method and application of heat-resistant titanium alloy wires

A technology of titanium alloy wire and titanium alloy, which is applied in the field of titanium-based alloys and can solve problems such as poor shaping

Active Publication Date: 2019-02-19
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium alloys used at 600°C for a long time have excellent high-temperature creep and durability, but their shape is poor at room temperature or at medium and low temperatures, and cannot be prepared by traditional processing techniques

Method used

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  • Preparation method and application of heat-resistant titanium alloy wires
  • Preparation method and application of heat-resistant titanium alloy wires
  • Preparation method and application of heat-resistant titanium alloy wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Smelting process: The raw material is 0-grade sponge titanium, and the alloy elements Sn, Mo, Si, Nb, and Ta are added in the form of master alloys; except for the part brought into the master alloy, the insufficient part of Al is added in the form of pure Al beans; Zr and C are respectively added in the form of Sponge Zr and toner forms added. The master alloy containing Sn is Ti-Sn, the master alloy containing Mo is Al-Mo, the master alloy containing Si is Al-Si, the master alloy containing Nb is Al-Nb, the master alloy containing Ta is Al-Ta-Ti, and the sponge titanium is average It is divided into four layers, and the master alloy after mixing is divided into three layers, which are evenly sandwiched between four layers of sponge titanium. After the master alloy and sponge titanium are batched and mixed, they are pressed into electrodes by a press. Several electrode groups are welded together and smelted three times in a vacuum consumable electric arc furnace to mak...

Embodiment 2

[0070] Smelting process: The raw material is 0-grade sponge titanium, and the alloy elements Sn, Mo, Si, Nb, and Ta are added in the form of master alloys; except for the part brought into the master alloy, the insufficient part of Al is added in the form of pure Al beans; Zr and C are respectively added in the form of Sponge Zr and toner forms added. The Sn-containing master alloy is Ti-Sn, the Mo-containing master alloy is Al-Mo, the Si-containing master alloy is Al-Si, the Nb-containing master alloy is Al-Nb, and the Ta-containing master alloy is Al-Ta-Ti. After the titanium sponge is batched and mixed, it is pressed into an electrode with a press. Several electrode groups are welded together and smelted three times in a vacuum consumable electric arc furnace to make an alloy ingot. After the cap is cut off and the surface defects are removed, the ingot enters the thermal processing process.

[0071] Free forging process: the φ365mm Ti60 titanium alloy ingot is held at 11...

Embodiment 3

[0081] Smelting process: The raw material is 0-grade sponge titanium, and the alloy elements Sn, Mo, Si, Nb, and Ta are added in the form of master alloys; except for the part brought into the master alloy, the insufficient part of Al is added in the form of pure Al beans; Zr and C are respectively added in the form of Sponge Zr and toner forms added. The master alloy containing Sn is Ti-Sn, the master alloy containing Mo is Al-Mo, the master alloy containing Si is Al-Si, the master alloy containing Nb is Al-Nb, the master alloy containing Ta is Al-Ta, the master alloy and sponge titanium After batching and mixing, the electrodes are pressed with a press. Several electrode groups are welded together and smelted three times in a vacuum consumable electric arc furnace to make an alloy ingot. After the cap is cut off and the surface defects are removed, the ingot enters the thermal processing process.

[0082] Free forging process: the φ365mm Ti60 titanium alloy ingot is held a...

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Abstract

The invention provides a machining and manufacturing method and application of heat-resistant titanium alloy Ti60 wires. The method comprises the steps that Ti60 titanium alloy ingot castings are smelted by adopting a vacuum consumable smelting technology; the smelted Ti60 titanium alloy ingot castings are forged into rods by adopting a free forging technology; the Ti60 titanium alloy rods are finish-forged into thick rod blanks by adopting a finish forging technology; the Ti60 titanium alloy thick rod blanks are rolled into straight strip wire blanks by adopting a hot rolling technology; surface treatment is conducted on Ti60 titanium alloy annealing wire blanks, and pre-oxidation oxidation film hanging treatment is conducted after defects on the surfaces of the wire blanks are removed; continuous high-temperature drawing deformation is conducted on the Ti60 titanium alloy wire blanks obtained after surface treatment by adopting a straight wire drawing machine; the drawn wires are straightened by adopting electric heating tension; and annealing heat treatment is conducted on the straightened wires, and finally centerless grinding is conducted. According to the machining and manufacturing method and application of the heat-resistant titanium alloy Ti60 wires, through combination of different heat machining and heat treating technologies, different matching combinations of the tensile strength, the plasticity and the shearing strength can be obtained, and the heat-resistant titanium alloy Ti60 wires can be used for manufacturing advanced aerospace fasteners such as rivets, bolts and nuts and are used in the temperature range of 600-650 DEG C.

Description

technical field [0001] The invention belongs to the field of titanium-based alloys, and in particular relates to a processing and manufacturing method and application of heat-resistant titanium alloy wires within 600°C to 650°C. Background technique [0002] Due to its high specific strength, wide operating temperature range, and excellent fatigue resistance, titanium alloys are very suitable for use as fasteners on high-speed aircraft. In addition, titanium alloy is more corrosion-resistant than alloy steel, and does not require protective coating in many environments, so it is also a fastener material used in some harsh environments such as corrosion or high temperature. The weight reduction effect produced by the use of titanium alloy fasteners will have a huge effect on improving the propulsion of the aircraft, increasing the range, and saving fuel. [0003] At present, aerospace titanium alloy fasteners are widely used, and common raw materials include TC4 and TC16 tit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/03C22F1/18B21C37/04
CPCB21C37/047C22C1/03C22C14/00C22F1/183
Inventor 朱绍祥王清江刘建荣陈志勇王磊赵子博李文渊
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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