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Preparation method of equal-atomic-ratio titanium-nickel alloy ingots

A titanium-nickel alloy, equal atomic ratio technology, applied in the field of titanium-nickel alloy smelting, can solve the problems of pores, poor alloy fluidity, etc.

Active Publication Date: 2013-08-14
西安赛特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the smelting equipment itself and the smelting process, small ingots below 20Kg are generally prepared, and due to the poor fluidity of the alloy and the limitation of pouring conditions, defects such as pores and cold shuts inevitably occur.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0021] Example 2 The Φ220-150Kg ingot smelting method of TiNi52 alloy: first, the raw material 0-grade sponge titanium and Ni9999 electrolytic nickel are smelted in a 25Kg intermediate frequency vacuum induction furnace according to the ratio of Ti-Ni52at% (Ti-Ni57.04wt%) 15Kg primary titanium-nickel alloy ingot. 10 primary ingots are selected for assembly and welding as consumable electrodes with a weight of 150Kg. A Φ220mm copper crucible is used for smelting in a vacuum consumable furnace to obtain a Φ220-150Kg ingot.

Embodiment 3

[0022] Example 3 TiNiV (Ti-Ni50.8-V0.5at%) alloy Φ160-120Kg ingot smelting method: first raw material 0 grade sponge titanium, Ni9999 electrolytic nickel according to TiNiV (Ti-Ni55.85-V0.47wt%) Proportioning, smelting Φ100-15Kg primary titanium-nickel alloy ingots in a 25Kg intermediate frequency vacuum induction furnace. 8 ingots are selected for group welding as consumable electrodes with a weight of 120Kg. A Φ160mm copper crucible is used for smelting in a vacuum consumable furnace to obtain a Φ160-120Kg ingot.

Embodiment 4

[0023] The Φ160-120Kg ingot smelting method of embodiment 4TiNi47Fe3 (Ti-Ni47-Fe3at%) alloy: first raw material 0 grade sponge titanium, Ni9999 electrolytic nickel according to TiNi47Fe3 (Ti-Ni51.86-Fe3.15wt%) proportioning, in The Φ100-15Kg primary titanium-nickel alloy ingot is melted in a 25Kg intermediate frequency vacuum induction furnace. 8 ingots are selected for group welding as consumable electrodes with a weight of 120Kg. A Φ160mm copper crucible is used for smelting in a vacuum consumable furnace to obtain a Φ160-120Kg ingot.

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PUM

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Abstract

The invention discloses a preparation method of equal-atomic-ratio titanium-nickel alloy ingots. The preparation method comprises the following steps of: firstly, melting and preparing primary titanium-nickel alloy ingots by utilizing a vacuum induction furnace; and secondly, carrying out group welding on the primary titanium-nickel alloy ingots to form consumable electrodes, and carrying out consumable electrode vacuum furnace melting on the consumable electrodes to form secondary titanium-nickel alloy ingots. According to the preparation method, titanium-nickel binary alloys with the nickel content of 49-52 at% or ternary or complex alloy ingots containing elements such as Fe, V, Al, Nb and Cr can be prepared; and the alloy components are uniform, the impurity content is low, and the requirements on the titanium-nickel alloys in the fields of electrons, machineries, space navigation, energy sources, medical treatment and public health, daily necessities and the like are met.

Description

Technical field: [0001] The invention relates to a method for smelting a titanium-nickel alloy, in particular to a method for smelting a large ingot of a titanium-nickel shape memory alloy with an equiatomic ratio. Background technique: [0002] Titanium-nickel-based shape memory alloy is a new type of metal functional material that emerged in the 1960s with three characteristics: shape memory, superelasticity and high damping. It also has excellent biocompatibility. It has been used in electronics, machinery , aerospace, energy, home appliances, medical care and daily necessities and other fields. [0003] The main technical properties of equiatomic ratio Ti-Ni alloy materials are superelasticity and shape memory effect, including parameters such as alloy phase transition point, recovery stress and recovery rate, and chemical composition is the most sensitive factor affecting the performance of the alloy. For Ti-Ni alloys with nearly equal atomic ratio, when the Ni content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C14/00C22C19/03
Inventor 毛江虹曹继敏杨华斌牛中杰雷亚军薛飒
Owner 西安赛特新材料科技股份有限公司
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