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Production process for titanium and nickel shape memory alloy material

A memory alloy and production process technology, applied in the field of memory alloy material production process, can solve the problems of pure titanium pipe only with corrosion resistance, no superelasticity and shape memory function, etc.

Inactive Publication Date: 2012-02-08
BAOJI SEABIRD METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pure titanium pipe has only corrosion resistance, no superelasticity and shape memory function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The production process of a memory alloy material provided by this embodiment is: a production process of a titanium-nickel shape memory alloy material, which is characterized in that 46% of sponge titanium and 54% of electrolytic nickel are loaded into vacuum induction In the smelting furnace, it is refined into alloy ingots;

[0024] The alloy ingot is forged into a bar with a diameter of 70 mm at a height. After the surface of the bar is descaled, the bar is drilled with a deep hole. The diameter of the drilled outer diameter is 65 mm, and the inner diameter is 35 mm. thick-walled pipes, made into extrusion billets;

[0025] The extruded billet is hot-extruded on the extruder, and the billet is hot-extruded into a tube blank with a diameter of 80 mm. The tube blank is processed by machining on its inner and outer surfaces to eliminate grooves and cracks on the inner and outer surfaces. , pit surface defects;

[0026] The pipes are rolled in LD30, LD15, and LD8 thre...

Embodiment 2

[0029] A kind of production technology method of memory alloy material provided by the present embodiment, described method is:

[0030] According to the weight ratio required by the alloy, take 0# titanium sponge 43% ~ 46% (weight ratio), 1# electrolytic nickel 54% ~ 57% (weight ratio) and put it into the vacuum induction melting furnace, and the vacuum degree is 0.1 ~ 0.5 Pa, after refining the alloy for 35-50 minutes, it is poured into an alloy ingot with a diameter of 90-120 mm in a mold.

[0031] It is forged at a temperature of 800-950 ℃ required by the process to form a bar with a diameter of 60-90 mm. After the surface is descaled, the bar is drilled with a deep hole, and the outer diameter is 55-85 mm, and the diameter is 20-50 mm. Thick-walled tubing of mm inner diameter, manufactured as extruded billets.

[0032] Hot extrusion is carried out on a 315-ton four-column extruder, heated to 800-950°C for extrusion, and the billet with a diameter of 55-85 mm is hot-extru...

Embodiment 3

[0036] A kind of production technology method of memory alloy material provided in this embodiment, described method is: according to the weight ratio required by the alloy, take 45% (weight ratio) of sponge titanium, 55% (weight ratio) of electrolytic nickel and put into vacuum induction melting In the furnace, vacuumize to 02Pa, refine the alloy for 36 minutes, and pour it into a 110mm diameter alloy ingot in the mold.

[0037] Forged at a temperature of 810°C required by the process to form a bar with a diameter of 65 mm. After the surface is descaled, the bar is drilled through a deep hole to form a thick-walled pipe with an outer diameter of 61 mm and an inner diameter of 28 mm. become extrusion billets.

[0038] Hot extrusion is carried out on a 315-ton four-column extruder, heated to 830°C for extrusion, and the billet with a diameter of 65 mm in outer diameter is hot-extruded into a tube billet with a diameter of 60 mm, and the inner and outer surfaces of the tube bill...

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Abstract

The present invention relates to a production process for a memory alloy material, and discloses a production process for a titanium and nickel shape memory alloy material. The production process comprises the following steps that: 43-46% of titanium sponge and 54-57% of electrolytic nickel are filled in a vacuum induction melting furnace to carry out refining to obtain an alloy ingot casting; pipes are respectively rolled through three pipe rolling devices comprising LD30, LD15 and LD8; a treatment of vacuum annealing is repeatedly performed to roll the pipes into the pipes with diameters of0.6-1.2 mm; the pipes with core rods are drawn through a drawing machine, such that the pipe material is subjected to a surface oxidation treatment to prepare the titanium and nickel shape memory alloy material. The process of the method provided by the present invention is simple, and the produced titanium and nickel shape memory alloy material has a shape memory function.

Description

technical field [0001] The invention relates to a production process of a memory alloy material. Background technique [0002] Chinese Invention Patent No.: 01138916.8 discloses a preparation process for combustion and synthesis of porous nickel-titanium shape memory alloys. The operation is as follows: first, using pure titanium powder and nickel powder as raw materials, the raw material powders are prepared in an almost equiatomic ratio, and mixed uniformly ; Then make a billet with an original porosity of 35% to 65%; place it in a heating furnace and preheat it under the protection of an inert gas atmosphere; when the billet reaches the minimum ignition temperature and is lower than 700°C, use an external heat source to ignite From one end of the billet, the combustion wave spontaneously spreads to the other end to synthesize a porous nickel-titanium shape memory alloy. [0003] Stainless steel pipe has certain elasticity, but it has no shape memory function, and its sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/00C22F1/10
Inventor 淡海亮
Owner BAOJI SEABIRD METAL MATERIAL
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