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Titanium alloy bar billet drawing-out forging method

A titanium alloy and billet technology, which is applied in metal processing equipment and other directions, can solve problems such as insufficient guarantee of deformation, difficulty in maintaining consistent deformation, and insufficient process stability, etc., to achieve fine control, ensure consistency, and improve billet quality effect

Active Publication Date: 2018-07-10
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the controllability of the deformation is poor, the deformation of the end and the middle of the billet is difficult to keep consistent, the deformation of the billet at the junction of two feeds cannot be fully guaranteed, the degree of freedom is large, and the process stability is insufficient

Method used

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  • Titanium alloy bar billet drawing-out forging method

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Effect test

specific Embodiment approach

[0032] 1. The coincidence degree coefficient K is selected as 0.2, the width of the upper and lower flat anvils is W=400mm, the determined feed rate is L=192mm, and the side length of the square bar blank after drawing is 155mm;

[0033] 2. Starting from the length of 192mm at one end of the billet, first press down along one side to 155mm, then rotate 90° around the axis of the billet to the other opposite side, and press down again to 155mm, and repeat the above operations until the cross-sectional shape becomes side The square with a length of 155mm completes the final elongation forging of this part of the billet;

[0034] 3. Feed the titanium alloy billet to a length of 192mm;

[0035] 4. Carry out rotary forging according to the forging method described in step 2, until the elongation forging of the titanium alloy bar blank with a length of 192 mm is completed;

[0036] 5. Repeat steps 3 to 4 until the entire titanium alloy billet becomes a square billet with a side len...

Embodiment 2

[0038] The specific implementation method of forging a square edge with a deformation amount A of 35% by using a square titanium alloy bar blank with a side length of 400mm as a blank:

[0039] 1. The coincidence coefficient K is selected as 0.15, the width of the upper and lower flat anvils is W=400mm, the determined feed rate is L=221mm, and the side length of the square bar blank after drawing is 322mm;

[0040] 2. Starting from the length of 221mm at one end of the billet, first press down to 322mm along the diagonal line, then rotate 90° around the billet axis to the other diagonal line, press down again to 322mm, and repeat the above operations until the section The shape becomes a square with a side length of 322mm, and the final elongation forging of this part of the billet is completed;

[0041] 3. Feed the titanium alloy billet to a length of 221mm;

[0042] 4. Carry out rotary forging according to the forging method described in step 2, until the elongation forging...

Embodiment 3

[0045] The specific implementation method of hexagonal elongated forging with a deformation amount A of 45% using a titanium alloy billet with a diameter of 300 mm as a blank:

[0046] 1. The coincidence coefficient K is selected as 0.2, the width of the upper and lower flat anvils is W = 300mm, the determined feed rate is L = 132mm, and the distance between the opposite sides of the hexagonal billet after drawing is 212mm;

[0047] 2. Starting from the length of 132mm at one end of the billet, press down to 212mm, then rotate 60° around the billet axis, press down again to 212mm, and repeat the above operations until the cross-sectional shape becomes a regular hexagonal with a distance of 212mm across, and the completion Final elongation forging of this part of the billet;

[0048] 3. Feed the titanium alloy billet to a length of 132mm;

[0049] 4. Carry out rotary forging according to the forging method described in step 2, until the elongation forging of the titanium alloy...

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Abstract

The invention belongs to the field of titanium alloy forging processing, and relates to a titanium alloy bar billet drawing-out forging method. The drawing-out forging method comprises the following steps of determining a feeding size L for drawing-out each time; carrying out drawing-out forging for the first time; feeding a titanium alloy bar billet; rotating and forging according to the forgingmethod mentioned in the step (1.2) until the titanium alloy bar billet with the length L is deformed to reach to A; and repeating the step (1.3) to the step (1.4) until the whole titanium alloy bar billet is deformed to reach to A. The invention provides the titanium alloy bar billet drawing-out forging method. The deformation controllability is improved, the consistency of the end part deformation and the middle part deformation of the bar billet is ensured, and the process stability is improved.

Description

technical field [0001] The invention belongs to the field of titanium alloy forging processing, and relates to a method for elongating and forging a titanium alloy billet. Background technique [0002] Due to its excellent strength, toughness and corrosion resistance, titanium alloy has become an important material in the fields of aviation, aerospace and navigation. Its consumption is increasing with the improvement of weapons and equipment level, and has a broad market prospect. The development and production of various high-quality equipment parts is inseparable from high-quality and high-stability blanks, including rods, plates, wires, pipes, etc. Among the titanium alloys, the bar has the strongest versatility and the largest consumption. At this stage, the most commonly used technical method for the preparation of titanium alloy bars at home and abroad is to perform multiple times of repeated upsetting and drawing deformation of the ingot by means of free forging wit...

Claims

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Application Information

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IPC IPC(8): B21J5/00
CPCB21J5/00
Inventor 周毅曹京霞黄旭王旭
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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