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Nickel-titanium spring having high output force value ratio under high and low temperatures

A high-low temperature, output force technology, applied in the direction of springs, springs/shock absorbers, coil springs, etc., can solve problems such as changes, spring support balance and stability cannot be guaranteed, and achieve the effect of increasing the ratio of high and low temperature output force values

Inactive Publication Date: 2016-05-11
江阴佩尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many mechanical structures need to use springs as supporting structures. The output force of ordinary springs will change with the change of ambient temperature, and the balance and stability of spring support cannot be guaranteed.

Method used

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  • Nickel-titanium spring having high output force value ratio under high and low temperatures
  • Nickel-titanium spring having high output force value ratio under high and low temperatures

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] like figure 1 Shown, the nickel-titanium spring in the present embodiment is to take the nickel-titanium wire of diameter 8mm as raw material, and the nickel atom percentage content of nickel-titanium wire is 50.0%, is drawn into the wire material of 3mm, and the wire material is wound The mandrel is molded into a spiral shape, and the outer peripheral surface of the mandrel is formed into a continuous spiral groove. After the mandrel is withdrawn from the mold, the pre-shaped spring is divided and cut, and then the spring is subjected to high and low temperature training, as follows:

[0013] Place the spring in a low-temperature environment of minus 20°C to minus 50°C, which can be liquid nitrogen or low-temperature alcohol to make the spring weak, specifically satisfying that there is no recovery deformation after compressing the spr...

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Abstract

The invention relates to a nickel-titanium spring having high output force value ratio under high and low temperatures. A manufacturing technology includes the steps that a nickel-titanium wire serves as a raw material and is subjected to drawing to form a wire with the diameter of 0.5-2 mm; the wire is wound on a core rod to form a spiral shape; after die release of the wire is conducted from the core rod, split shearing is conducted, and a spring in a preset shape is obtained; the spring is subjected to high-and-low-temperature training during which the spring is put into a low-temperature environment with the temperature ranging from minus 50 DEG C to minus 20 DEG C, the spring is fatigued and weakened, and specifically the shape of the compressed spring cannot recover; and the compressed spring is put into a high-temperature environment with the temperature ranging from 100 DEG C to 400 DEG C, heat insulation is conducted for 0.5-1 min, and the shape of the spring recovers naturally; the operation is repeated 50-100 times so that high-and-low-temperature training of the spring can be completed; and the nickel-titanium spring having the high output force value ratio is obtained. According to the nickel-titanium spring having the high output force value ratio under high and low temperatures, the output force value ratio of the nickel-titanium spring under the high and low temperatures is increased.

Description

technical field [0001] The invention relates to a nickel-titanium shaped product, in particular to a nickel-titanium spring with a relatively high output force value ratio at high and low temperatures. Background technique [0002] Nickel-titanium alloy is a shape memory alloy, which is a special alloy that can automatically restore its own plastic deformation to its original shape at a certain temperature. Its stretch rate is above 20%, fatigue life reaches 1*10 to the 7th power, damping characteristics are 10 times higher than ordinary springs, and its corrosion resistance is better than the best medical stainless steel at present. In addition to its unique shape, memory alloy In addition to the memory function, it also has excellent characteristics such as wear resistance, corrosion resistance, high damping and super elasticity. Therefore, it can meet the application requirements of various engineering and medicine, and is a very excellent functional material. [0003] ...

Claims

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Application Information

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IPC IPC(8): F16F1/06B21F3/04
CPCF16F1/021B21F3/04F16F1/06
Inventor 黄陈兵曾红金
Owner 江阴佩尔科技有限公司
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