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,

Method used

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  • Titanium alloy bar billet drawing-out forging method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0030] Example 1

Example Embodiment

[0031] The specific implementation of the square face-to-face drawing and forging with a square titanium alloy bar with a side length of 200mm as a blank with a deformation A of 40%:

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

[0033] 2. Starting with a length of 192mm at one end of the bar stock, first press down to 155mm along a pair of faces, then rotate 90° around the axis of the bar stock to the other opposite face, press down again to 155mm, and repeat the above operation until the cross-sectional shape becomes a side 155mm long square, complete the final drawing and forging of this part of the bar stock;

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

[0035] 4. Carry out rotary forging according to the forging method described in step 2 until the drawing and forging of the titanium alloy bar blank with a...

Example Embodiment

[0037] Example 2

[0038] The specific implementation of the square-edge variable-surface drawing and forging with a square titanium alloy bar with a side length of 400mm as a blank with a deformation A of 35%:

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

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

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

[0042] 4. Perform rotary forging according to the forging method described in step 2 until the drawing forgi...

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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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