Preparation method of special-shaped section wire titanium alloy spring

A technology of titanium alloy springs and special-shaped cross-sections, which is applied in the manufacture of springs from wires, wire processing, and applications. It can solve the problems of low stiffness coefficients of titanium alloy springs, increase the cross-sectional area of ​​wire materials, stabilize performance, and make springs difficult to control. Effect

Active Publication Date: 2016-03-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the shear modulus of titanium alloy is only half of that of steel. Under the condition of the same structural size, the stiffness coefficient of titanium alloy spring is smaller

Method used

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  • Preparation method of special-shaped section wire titanium alloy spring
  • Preparation method of special-shaped section wire titanium alloy spring
  • Preparation method of special-shaped section wire titanium alloy spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, the titanium alloy ingot is forged into a φ70 mm forged rod, and the forged rod is rolled into a square wire with a section of 12.5 mm×12.5 mm by special-shaped rolling equipment.

[0029] (1) Forging: At 1170°C, heat preservation for 3 hours, using forging process, forging titanium alloy ingots into φ70mm rods;

[0030] (2) Hot rolling: heat preservation at 900° C. for 1 hour, and use hot rolling process to roll the titanium alloy forged rod into a square wire with a section of 12.5 mm×12.5 mm through rolling equipment.

[0031] (3) Solution treatment: solution treatment was carried out on the rolled bar at 830°C for 10 minutes, and the tensile properties of the solid solution wire were measured. See Table 1 for the specific results.

[0032] Table 1 Tensile properties of wire after solid solution treatment

[0033]

[0034] It can be seen from Table 1 that the plasticity of the wire after solution treatment is good, especially the reduction of ...

Embodiment 2

[0040]In this embodiment, the titanium alloy ingot is forged into a forged rod with a diameter of 60 mm, and the forged rod is rolled into a hexagonal wire with a side length of 7.5 mm by special-shaped rolling equipment.

[0041] (1) Forging: At 1140°C, heat preservation for 4 hours, using forging process, forging titanium alloy ingots into φ60mm rods;

[0042] (2) Hot rolling: heat preservation at 880°C for 2 hours, using a hot rolling process, rolling the titanium alloy forged rod through rolling equipment into a hexagonal wire with a side length of 7.5 mm;

[0043] (3) Solution treatment: heat preservation at 820° C. for 15 minutes, carry out solution treatment on the wire, and measure the tensile properties of the wire in solution state. The specific results are shown in Table 3.

[0044] Table 3 Tensile properties of wire after solid solution treatment

[0045]

[0046] It can be seen from Table 3 that the plasticity of the wire after solution treatment is good, espe...

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Abstract

The invention relates to a preparation method of a titanium alloy spring made of a wire with a specially-shaped section and belongs to the technical field of springs. The spring is formed by winding of the titanium alloy wire with the specially-shaped section; the titanium alloy wire comprises the components in percentage by mass as follows: 2-4 of Al, 6-10 of V, 4-8 of Cr, 2-6 of Mo, 2-6 of Zr, 0.1-0.3 of Fe, 0.03-0.15 of Si and the balance of Ti. The section of the titanium alloy spring wire can be rectangular, square, orthohexagonal or oval. The titanium alloy wire wound into the spring is prepared with forging, pressing and hot rolling technologies, the wire is subjected to solution treatment before being wound into the spring, and a finished product of the spring is subjected to aging and strengthening treatment. A titanium alloy which is used for preparing the spring can play a weight reduction role, and meanwhile, the titanium alloy has the good corrosion resistance and the long fatigue life in an ocean environment. With the adoption of the wire with the specially-shaped section, the section area can be increased under the condition that specifications of wires are similar, so that the rigidity of the spring is improved, and the usage requirement of the titanium alloy spring under the high workload can be met.

Description

technical field [0001] The invention belongs to the technical field of springs, in particular to a method for preparing a titanium alloy spring made of wire material with a special-shaped section. Background technique [0002] Due to its deformation recovery characteristics, the spring has been widely used in many fields. Utilizing the characteristic of restoring force after the deformation of the spring element, it can be used for shock absorption, clamping, energy storage and measurement. According to different purposes, there are mainly compression springs, tension springs and torsion springs. The materials used are mainly metal materials, and steel springs are the most widely used springs made of metal materials, including carbon steel, alloy steel and stainless steel, and have been widely used in aerospace, machinery manufacturing, automobiles, ships and other fields. [0003] At present, with the development and continuous improvement of equipment manufacturing techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21F35/00C22C14/00
Inventor 王健景绿路金伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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