Low-rigidity TiNi alloy spring manufacturing technology

A preparation process and low rigidity technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of high production costs, achieve the effects of light weight, increased wire diameter, and stable and reliable working performance

Inactive Publication Date: 2018-11-02
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation technology of low-rigidity TiNi alloy spring, the present invention is the low-rigidity TiNi alloy spring that the TiNi memory alloy wire material thermal winding, thermal hook process prepare, and procedure is simple, has overcome material consumption and Due to the problem of high production cost, the prepared TiNi alloy spring has good corrosion resistance and fatigue resistance, and the working performance is more stable and reliable. It can be used in many fields such as marine engineering, automobile manufacturing, and aerospace.

Method used

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  • Low-rigidity TiNi alloy spring manufacturing technology

Examples

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Embodiment 1

[0029] A kind of preparation technology of low rigidity TiNi spring, its step is:

[0030] (1) Calculated and weighed according to mass percentage, the alloy composition is Ti: 44.2, Ni: 55.8, and the TiNi alloy ingot is prepared by vacuum induction melting in a cermet crucible to ensure the uniformity of the ingot composition and the control of impurity content;

[0031] (2) Put the TiNi alloy ingot into a resistance furnace, keep it warm for 1 hour at 850ºC, and after free forging, forge into a Φ40mm TiNi alloy forging rod.

[0032] (3) Put the TiNi alloy forged rod into a resistance furnace, heat it at 850ºC for 1 hour, and hot-roll it into a Φ8mm TiNi alloy rod;

[0033] (4) Put the Φ8mm TiNi alloy rod on the disc wire drawing machine, and perform hot drawing at 700°C, and draw it into a TiNi alloy wire with a diameter of 1.2mm;

[0034] (5) Cold draw the TiNi alloy wire with a diameter of 1.2mm until the final size is 1.0mm, cut two pieces of wire, number A and B respect...

Embodiment 2

[0040] A kind of preparation technology of low rigidity TiNi spring, its step is:

[0041] (1) Calculation and weighing according to mass percentage, the alloy composition is Ti: 45.2, Ni is 54.8, the TiNi alloy ingot is prepared by vacuum induction melting in a cermet crucible to ensure the uniformity of ingot composition and the control of impurity content;

[0042] (2) Put the TiNi alloy ingot into a resistance furnace, keep it warm for 1 hour at 900ºC, and after free forging, forge into a Φ40mm TiNi alloy forging rod.

[0043] (3) Put the TiNi alloy forged rod into a resistance furnace, heat it at 850ºC for 1 hour, and hot-roll it into a Φ8mm TiNi alloy rod;

[0044] (4) Put the Φ8mm TiNi alloy rod on the disc wire drawing machine, and perform hot drawing at 700°C, and draw it into a TiNi alloy wire with a diameter of 1.2mm;

[0045] (5) Cold draw the TiNi alloy wire with a diameter of 1.2mm until the final size is 0.8mm. Cut off two pieces of wire, numbered C and D respe...

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Abstract

The invention discloses a low-rigidity TiNi alloy spring manufacturing technology, and relates to a spring manufacturing technology. According to the technology, dosing is carried out according to thetitanium alloy component, and then a TiNi alloy casting ingot is obtained through vacuum induction melting; an alloy rolling bar is obtained through free forging and hot rolling; the bar is subjectedto hot drawing to be then subjected to cold drawing; and a finished product wire material obtained after drawing is subjected to hot winding to manufacture a TiNi alloy spring. According to the low-rigidity TiNi alloy spring manufacturing technology, the TiNi memory alloy wire material is subjected to hot winding and hot hooking technologies to manufacture the low-rigidity TiNi alloy spring, theprocess is concise, the problems about large material consumption and high production cost are solved, the manufactured TiNi alloy spring has the good corrosion resistance and anti-fatigue performance, the working performance is more stable and reliable, and the technology can be applied to many fields such as oceanographic engineering, automobile making and aerospace.

Description

technical field [0001] The invention relates to a preparation process of a spring, in particular to a preparation process of a low-rigidity TiNi alloy spring. Background technique [0002] A spring is a mechanical part that uses elasticity. For industrial systems, springs are very important components and have been widely used in the fields of machinery manufacturing, automobiles, electronics, and aerospace. Therefore, the entire industrial system has a great influence on springs. demand. [0003] The steel springs commonly used in industry now have poor corrosion resistance, especially poor salt spray corrosion resistance. Steel springs working in marine environments are extremely easy to be corroded by seawater, with short service life and unstable working performance. Secondly, the steel spring has a high density, a small volumetric efficiency, and is heavy, which increases the weight of the machine. Thirdly, the shear modulus of the steel spring is relatively large. Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F3/04B23P15/00C22C19/03C22F1/10C21D9/02
CPCB21F3/04B23P15/00C21D9/02C22C19/03C22F1/10
Inventor 牛建平耿双奇
Owner SHENYANG UNIV
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