A kind of preparation method of titanium alloy sheet

A technology for titanium alloys and plates, applied in the field of preparation of titanium alloy plates, can solve the problems of not yet realized industrial production application, unclear process parameters of ingot pretreatment, shaping and rolling, etc., achieving small grain size, reducing steps, reducing cost effect

Active Publication Date: 2022-07-29
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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  • A kind of preparation method of titanium alloy sheet
  • A kind of preparation method of titanium alloy sheet
  • A kind of preparation method of titanium alloy sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Preparation of titanium alloy sheet (1)

[0038] (1) Using grade 0 sponge titanium and high-quality master alloys of aluminum and vanadium, the alloy ratio is carried out according to TC4 (Ti-6Al-4V). Welded into electrodes. The consumable vacuum arc furnace (VAR furnace) is used for three 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) The ingot is heated to 850°C in a box-type resistance heating furnace, and kept for 100 minutes; then the temperature is increased to 1150°C, and the temperature is kept 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 oxide skin and debris on the surface of the blank, plan and mill on six sides on a gantry milling machine, smooth the surface, and mill out the uneve...

Embodiment 2

[0042] Example 2: Preparation of Titanium Alloy Plate (2)

[0043] (1) Using grade 0 sponge titanium and high-quality master alloys of 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) Alloy ratio of Sn-(0.1-0.5)Si), the alloy with good ratio is pressed into alloy blocks on a 3000-ton hydraulic press, and welded into electrodes in a vacuum welding box. The consumable vacuum arc furnace (VAR furnace) is used for three 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) The ingot is heated to 800°C in a box-type resistance heating furnace, and kept for 100 minutes; then the temperature is increased to 1000°C, and the temperature is kept 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 grinding and polishing machine to po...

Embodiment 3

[0047] Example 3: Detection of titanium alloy sheets prepared in Example 1 and Example 2

[0048] The microstructures and morphologies of the titanium alloy sheets prepared in Examples 1 and 2 are 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 and fine equiaxed structure is obtained; after annealing, the plate is completely recrystallized, and the grain distribution is uniform, which meets the supply demand of titanium alloy plate.

[0049] Table 1 is based on 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-base washing-cutting planing Milling-finished product) prepared TC4 and TC611 titanium alloy plates (wherein ingot smelting, acid-base washing and subsequent procedures are consistent with the present invent...

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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 includes the following steps: (1) mixing the components of the titanium alloy material and then pressing into an electrode block, vacuum welding the electrode block and smelting to obtain a homogeneous ingot; (2) heating the homogeneous ingot Carry out shaping on a press to obtain a billet, which is ground after air cooling; (3) the ground billet is heated and then hot rolled; (4) the rolled sheet obtained by hot rolling is straightened, heat treated, Acid-base washing and cutting and grinding to obtain finished titanium alloy plates. By using the method for preparing the titanium alloy plate of the present invention, the titanium alloy plate can be prepared in a short process, low cost and high quality.

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 and military industry, aerospace, petrochemical, and marine ships. Among the various processing materials such as pipes, 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, the petrochemical industry is currently the largest application field of the entire titanium and titanium alloy sheet and strip market, 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 tit...

Claims

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Application Information

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Patent Type & Authority Patents(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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