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Preparation method of titanium alloy plate

A titanium alloy and plate technology, applied in the field of titanium alloy plate preparation, can solve the problems of unrealized industrial production and application, ingot pretreatment shaping and rolling process parameters are not clear, etc., to achieve small grain size, reduce steps, microstructure good uniformity

Active Publication Date: 2021-12-03
BEIJING JINYU SHUNDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ingot direct rolling process can effectively reduce production costs, but it has not yet been applied in industrial production
In addition, the pretreatment shaping of the ingot and the subsequent rolling process parameters are not yet clear

Method used

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  • Preparation method of titanium alloy plate
  • Preparation method of titanium alloy plate
  • Preparation method of titanium alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: Preparation of titanium alloy plate (1)

[0038] (1) Using 0-grade sponge titanium and high-quality intermediate alloy aluminum and vanadium, carry out the alloy ratio according to TC4 (Ti-6Al-4V), press the alloy with a good ratio on a 3000-ton hydraulic press to form an alloy block, and put it in a vacuum welding box welded into electrodes. The consumable vacuum electric arc furnace (VAR furnace) is used for three times of smelting, and the obtained ingot is turned and peeled by a lathe, and the riser is sawed to obtain a finished alloy ingot.

[0039](2) Heat the ingot to 850°C in a box-type resistance heating furnace and keep it for 100 minutes; then increase the temperature to 1150°C and keep it for 500 minutes. The heated ingot is shaped on a 4500T press, and the cylindrical ingot is pressed into a rectangular billet with a thickness of 300mm. After air-cooling, use a grinding and polishing machine to polish off the scale and debris on the surface ...

Embodiment 2

[0042] Embodiment 2: the preparation of titanium alloy plate (two)

[0043] (1) Use 0-grade sponge titanium and high-quality master alloy aluminum, iron, chromium, tin and silicon, according to TC611 (Ti-(4-7)Al-(0.2-2.5)Fe-(0.1-2)Cr-(0.1 -2) Sn-(0.1-0.5)Si) is used for alloy proportioning, and the proportioned alloy is pressed into an alloy block on a 3,000-ton hydraulic press, and then welded into an electrode in a vacuum welding box. The consumable vacuum electric arc furnace (VAR furnace) is used for three times of smelting, and the obtained ingot is turned and peeled by a lathe, and the riser is sawed to obtain a finished alloy ingot.

[0044] (2) Heat the ingot to 800°C in a box-type resistance heating furnace and keep it warm for 100 minutes; then raise the temperature to 1000°C and keep it warm for 500 minutes. The heated ingot is shaped on a 4500T press, and the round ingot is pressed into a rectangular billet with a thickness of 200mm. After air-cooling, use a grin...

Embodiment 3

[0047] Embodiment 3: the detection of the titanium alloy sheet material that embodiment 1 and embodiment 2 make

[0048] The microstructure topography diagrams of the titanium alloy plates prepared in Examples 1 and 2 are respectively as follows: figure 1 , 2 shown. From figure 1 and figure 2 It can be seen that the distribution of each phase inside the finished plate is uniform, and an ideal, fine equiaxed structure is obtained; after annealing, the plate achieves complete recrystallization, and the grain distribution is uniform, which meets the supply demand of titanium alloy plates.

[0049] Table 1 is according to the traditional process (ingot smelting-heating-forging upsetting-returning upsetting-air cooling grinding-heating upsetting-repair-heating forging-planing milling-heating-rolling-heat treatment-acid and alkali cleaning-cutting planer Milling-finished product) prepared TC4 and TC611 titanium alloy plates (wherein the ingot smelting, acid-base cleaning and fo...

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Abstract

The invention belongs to the technical field of alloy material processing, and relates to a preparation method of a titanium alloy plate. The preparation method comprises the following steps that (1) after being uniformly mixed, all components of a titanium alloy material are pressed into an electrode block, the electrode block is subjected to vacuum welding, and after smelting, a homogeneous cast ingot is obtained; (2) after being heated, the homogeneous cast ingot is shaped on a press machine, a square billet is obtained, and the square billet is ground after air cooling; (3) after being heated, the ground square billet is subjected to hot continuous rolling; and (4) a rolled plate obtained through hot continuous rolling is subjected to straightening, heat treatment, acid and alkali washing, cutting and grinding, and the finished titanium alloy plate is obtained. By means of the preparation method of the titanium alloy plate, the titanium alloy plate can be prepared in a short-process, low-cost and high-quality manner.

Description

technical field [0001] The invention belongs to the technical field of alloy material processing, and relates to a preparation method of a titanium alloy plate. Background technique [0002] Due to its low density, high strength and excellent corrosion resistance, titanium alloys are widely used in the fields of national defense, aerospace, petrochemical, and marine ships. Among the various processing materials such as tubes, rods, wires, and plates in the downstream market of titanium alloys, plates are the most widely used, accounting for about 50% of the total consumption of titanium materials. According to the analysis of relevant statistical data, currently the largest field of application in the entire titanium and titanium alloy plate and strip market is the petrochemical field, accounting for about 60% of the total consumption, followed by the aerospace field, accounting for about 15% of the total consumption. In recent years, the output of titanium plate and strip ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22B9/20C22F1/18C21D8/02C22C14/00B21B37/74B21B37/46B21B37/58B21B3/00
CPCC22C1/03C22B9/20C22F1/183C21D8/0226C21D8/0247C22C14/00B21B37/74B21B37/46B21B37/58B21B3/00
Inventor 仇庆凡王艳玲薛倩芸景建元赵海云
Owner BEIJING JINYU SHUNDA TECH CO LTD
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