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Preparation method of titanium alloy hot-rolled coil

A technology of titanium alloy and hot-rolled coils, which is applied in metal rolling and other directions, and can solve problems such as single form, high energy consumption, and complicated process

Active Publication Date: 2021-08-06
湖南湘投金天钛金属股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the plate produced by this method has excellent structure and performance, the rolling process required is complicated to ensure that the plate structure is uniform and has good rolling performance, and the energy consumption is relatively high; in addition, the form is relatively simple, the production capacity is small, Disadvantages such as poor batch stability

Method used

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  • Preparation method of titanium alloy hot-rolled coil
  • Preparation method of titanium alloy hot-rolled coil
  • Preparation method of titanium alloy hot-rolled coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In this embodiment, a titanium alloy hot-rolled coil is prepared, and the specific process is as follows:

[0073] S1. Take forged or cast slabs. For TC4 slabs with a thickness h of 250mm and a width of 1200mm, after cleaning with clean water and drying, apply the anti-oxidation coating to the surface and side of the slab with a brush, and after the coating is dry , turn over and brush the other side, and brush twice in total;

[0074] S2. After transporting the slab through the roller table, install it in the furnace, and put it into the walking furnace at room temperature; quickly pass through the preheating and heating sections, and the time in the two sections of the furnace should not exceed 1h; then stay in the soaking section for the slab Heat preservation, the heat preservation temperature is 940°C±10°C, the flame should be prevented from spraying directly on the slab during heating, and the heat preservation time is 5h;

[0075] S3. After the slab comes out of...

Embodiment 2

[0086] This embodiment prepared a titanium alloy hot-rolled coil, the difference between the specific process and embodiment 1 is:

[0087] (1) In step S4, the thickness h of the obtained slab is 60 mm, and the width a is 1500 mm;

[0088] (2) In step S7, the obtained slab thickness h is 35mm;

[0089] (3) The thickness h of the obtained product is 4.0 mm.

[0090] The surface metallographic image of the titanium alloy hot-rolled coil obtained in this embodiment is as follows image 3 Shown; cross-sectional metallographic diagram as shown Figure 4 shown.

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Abstract

The invention discloses a preparation method of a titanium alloy hot-rolled coil, and belongs to the technical field of titanium alloy processing. A preparation method of a titanium alloy hot-rolled coil comprises the following steps that S1, anti-oxidation treatment is conducted on a plate blank with the thickness ranging from 200 mm to 250 mm and the width larger than or equal to 1200 mm; S2, heating is carried out for the first time, wherein the heating temperature is less than or equal to the beta phase transformation point; S3, the plate blank obtained in the step S2 is pre-rolled in the width direction, the accumulated deformation is larger than or equal to 40%, and then is plate blank is pre-rolled to the middle thickness in the length direction; S4, anti-oxidation treatment and secondary heating below the beta phase transformation point are carried out again; and S5, the plate blank obtained in the step S4 is sequentially subjected to 1-3 times of rough rolling and multi-rack finish rolling, and then the titanium alloy hot-rolled coil with the thickness being 4-10 mm is obtained. According to the preparation method provided by the invention, a product meeting the standard can be obtained, and a fine and uniform grain structure is obtained after proper heat treatment.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy processing, and in particular relates to a method for preparing a titanium alloy hot-rolled coil. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys are widely used in various fields because of their high strength, good corrosion resistance, and high heat resistance. Many scholars have recognized the importance of titanium alloy materials, researched and developed them one after another, and obtained practical applications. Among them, TC4 alloy is the most widely used titanium alloy. Because of its good strength and toughness matching, it is widely used in aerospace, marine military and other fields. [0003] Whether the titanium alloy plate produced by traditional industry is directly used or used to prepare titanium alloy strip, in order to ensure the uniformity of the structure of the plate, it is necessary to carry out multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/18B21B1/22B21B3/00
CPCC22F1/183B21B1/22B21B3/00
Inventor 刘正乔涂爱东蒋孟玲孔玢陈彦辉余世伦
Owner 湖南湘投金天钛金属股份有限公司