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Method for manufacturing blank of shape memory alloy of cupper, zinc, and aluminum

A memory alloy and processing method technology, applied in the field of shape memory alloys, can solve the problems of poor thermal processing performance, varieties that cannot be crafted, and nickel-titanium shape memory alloys that cannot be welded, and achieves the effect of good superelasticity.

Inactive Publication Date: 2007-10-10
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. Nickel-titanium shape memory alloys cannot be welded, and the thermal processing performance is also poor. It needs to be formed and annealed multiple times, so it is impossible to make more varieties of craft patterns.

Method used

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  • Method for manufacturing blank of shape memory alloy of cupper, zinc, and aluminum
  • Method for manufacturing blank of shape memory alloy of cupper, zinc, and aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The copper-zinc-aluminum shape memory alloy blank is descaled and forged. The initial forging temperature is 800°C, the final forging temperature is 600°C, and the final forging size is 45mm×45mm×1000mm. The structure forged at this temperature is uniform and dense , no cracking, basically no peeling.

[0016] The starting temperature of rolling is 750°C, the final rolling temperature is 550°C, annealing is carried out during the rolling process, the optimum temperature of annealing is 600°C-720°C, the final size after rolling is Φ10mm, rolling at this temperature After processing and annealing, the mechanical properties are excellent, σ b =527.2MPa, σ 0.2 =292.1MPa, δ=6.21%.

[0017] The stretching process is as follows: Φ10mm-Φ8mm stretching temperature is 650°C-570°C, Φ8mm-Φ6mm stretching temperature is 570°C-540°C, Φ6mm-Φ4.5mm stretching temperature is 540°C-520°C, Φ4.5mm- The stretching temperature for Φ3.6mm is 520°C-500°C, the stretching temperature for Φ3.6mm...

Embodiment 2

[0019] The copper-zinc-aluminum shape memory alloy billet is descaled and forged. The initial forging temperature is 800°C, the final forging temperature is 640°C, and the final forging size is 45mm×45mm×1000mm. The structure forged at this temperature is uniform and dense. , no peeling, no cracking.

[0020] The starting rolling temperature is 720°C, the final rolling temperature is 580°C, the annealing temperature is 700°C-660°C during the rolling process, and the final size after rolling is Φ10mm. After rolling and annealing at this temperature , excellent mechanical properties, σ b =542.6MPa, σ 0.2 =302.4MPa, δ=7.04%.

[0021] The stretching process is as follows: Φ10mm-Φ8mm stretching temperature is 630°C-570°C, Φ8mm-Φ6mm stretching temperature is 570°C-540°C, Φ6mm-Φ4.5mm stretching temperature is 540°C-520°C, Φ4.5mm- The stretching temperature for Φ3.6mm is 520°C-500°C, the stretching temperature for Φ3.6mm-Φ2.8mm is 500°C-480°C, and the final dimension after stretchi...

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Abstract

This invention relates to a method for processing Cu-Zn-Al shape-memory alloy billet. The method comprises: removing the oxide layer from the Cu-Zn-Al shape-memory alloy billet, forging at 600-800 deg.C, rolling at 550-750 deg.C, annealing at 600-720 deg.C during rolling, stretching at 460-650 deg.C, and annealing at 600-690 deg.C. The final size after forging is 45 mmX45 mmX1000 mm. The obtained Cu-Zn-Al shape-memory alloy billet can be stretched into wires with different diameters according to different requirements, which can be used to produce spectacle frames with excellent elasticity.

Description

technical field [0001] The invention relates to the technical field of shape memory alloys, in particular to a processing method for copper-zinc-aluminum shape-memory alloy blanks, which is suitable for manufacturing copper-zinc-aluminum shape-memory alloy spectacle frames. Background technique [0002] In the glasses industry, the superelasticity of shape memory alloys is used to make glasses frames, so that the glasses frames do not deform and ensure the aesthetics of the glasses during use. This kind of glasses frames made of shape memory alloy wires are currently sold at home and abroad. is constantly evolving. [0003] At present, nickel-titanium shape memory alloy is used. Compared with the spectacle frame made of nickel-titanium shape memory alloy, the spectacle frame made of copper-zinc-aluminum shape memory alloy wire has the following advantages: [0004] 1. Low cost, the raw material cost of copper-zinc-aluminum shape memory alloy is only a quarter of that of nic...

Claims

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Application Information

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IPC IPC(8): C22F1/08
Inventor 司松海司乃潮
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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