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CN-122012934-A - Multielement encapsulation and electrode assembly welding smelting method based on titanium alloy reclaimed materials

CN122012934ACN 122012934 ACN122012934 ACN 122012934ACN-122012934-A

Abstract

The invention provides a multi-element packaging and electrode assembly welding smelting method based on titanium alloy reclaimed materials, which comprises the steps of taking the titanium alloy reclaimed materials as a matrix, designing alloy proportions according to the requirements of target titanium alloy components, adding linear or strip-shaped alloy elements in a zoned mode, wrapping the linear or strip-shaped alloy elements into a strip shape by adopting aluminum foil, packaging the strip-shaped alloy into a pure titanium welded pipe, sealing two ends of the pure titanium welded pipe to form an alloy bag, adding sponge titanium and the alloy bag in layers according to a proportion, pressing an electrode by adopting a horizontal or vertical press to form a composite electrode structure, drying the electrode in an oven, welding the electrode into a specified length by adopting argon shielded arc welding, smelting by adopting a vacuum consumable arc smelting furnace, setting cooling time according to the specification of the electrode, cooling and then deflating, and taking out a titanium ingot. The method solves the difficult problem of adding granular alloy by optimizing the batching mode, the electrode assembly welding structure and the smelting process, improves the uniformity of alloy components and the quality of titanium ingots, and is suitable for recycling and reutilizing various titanium alloys.

Inventors

  • SUN BING
  • MA YI
  • QIAO HAIBIN
  • SUN HONGZHE
  • LI WEIDONG
  • SUN YAHUI
  • WANG WEICHAO
  • LI BOBO
  • PEI TENG

Assignees

  • 洛阳双瑞精铸钛业有限公司

Dates

Publication Date
20260512
Application Date
20260416

Claims (10)

  1. 1. A multi-element packaging and electrode assembly welding smelting method based on titanium alloy reclaimed materials is characterized by comprising the following steps: (1) Alloy component design and batching, namely taking a titanium alloy reclaimed material as a matrix, designing alloy proportion according to the requirement of target titanium alloy components, and adding linear or strip alloy elements in a zonal or strip form, wrapping the granular alloy into a strip shape by adopting an aluminum foil, packaging in a pure titanium welded pipe, compacting, and sealing two ends to form an alloy package; (2) The preparation of the electrode comprises the steps of adding titanium sponge and an alloy bag in layers according to a proportion, and pressing the electrode by adopting a horizontal or vertical press to form a composite electrode structure; (3) Electrode assembly welding, namely drying the electrode in an oven, and welding the electrode into a specified length by adopting argon shielded welding; (4) Smelting by adopting a vacuum consumable arc smelting furnace; (5) And (3) cooling and ingot discharging, namely setting cooling time according to the specification of the electrode, cooling, discharging air, and taking out the titanium ingot.
  2. 2. The smelting method according to claim 1, wherein the linear or strip-shaped alloy elements are Al, fe, the Al element being added in aluminum strip-type zones, the Fe element being added in iron wire-type zones.
  3. 3. The smelting process according to claim 1, wherein the particulate alloy is at least one of AlCr, alMo, alB, alV.
  4. 4. The smelting method according to claim 1, wherein the pressure of the pressed electrode in the electrode preparation process is not less than 250MPa, and the electrode density is not less than 3.2g/cm3.
  5. 5. The smelting process according to claim 1, wherein both of the outer two layers of the composite electrode structure are recycled titanium alloy.
  6. 6. The smelting method according to claim 1, wherein the drying temperature in the electrode assembly welding is 180 ℃ to 200 ℃.
  7. 7. The smelting method according to claim 1, wherein the vacuum is applied to 0.1 to 100 Pa when the vacuum consumable electrode arc melting furnace is used for smelting.
  8. 8. Smelting process according to claim 1, characterized in that smelting parameters in the smelting process are set according to electrode size, equipment type.
  9. 9. The smelting process according to claim 1, wherein the cooling time is 60 to 180 minutes.
  10. 10. The smelting method according to claim 1, wherein the average deviation of each element in the titanium ingot from the target value is within-0.08%.

Description

Multielement encapsulation and electrode assembly welding smelting method based on titanium alloy reclaimed materials Technical Field The invention relates to the technical field of metal material preparation and resource recycling, in particular to a multielement encapsulation and electrode assembly welding smelting method based on a titanium alloy reclaimed material, which is used for integrally preparing a target titanium alloy and is suitable for the high-end manufacturing fields of aerospace, medical equipment, new energy, 3C consumption and the like. Background In the current titanium alloy preparation process, the titanium alloy waste material recycling rate is low, the granular alloy is difficult to add, the component segregation is serious, and the low-cost and high-efficiency preparation and the resource recycling of the titanium alloy are limited. In the prior art, granular alloy (such as AlCr, alV, alMo and the like) is easy to drop, easy to pollute and difficult to package, so that the components of the electrode assembly are uneven after welding, and the problems of inclusion, air holes and the like appear in smelting, thereby seriously affecting the quality of titanium ingots. While the addition mode of the linear alloy (such as Al strips and Fe wires) is stable, the operation is complex, the cost is high, and the diversified requirements of various titanium alloys are difficult to meet. Therefore, there is a need for an electrode assembly welding and smelting method that can be adapted to a variety of titanium alloys, a variety of reclaimed materials, and a variety of intermediate alloys to achieve high quality, low cost, and efficient production of titanium alloys. Disclosure of Invention In view of the above, the invention aims to provide a multielement packaging and electrode assembly welding smelting method based on a titanium alloy reclaimed material, so as to solve the problems of low recycling rate of titanium alloy waste, inconvenience in adding granular alloy and strip alloy, uneven components after electrode assembly welding and the like in the prior art. In order to achieve the above purpose, the technical scheme of the invention is realized as follows: A multielement packaging and electrode assembly welding smelting method based on titanium alloy reclaimed materials comprises the following steps: (1) Alloy component design and batching, namely taking a titanium alloy reclaimed material as a matrix, designing alloy proportion according to the requirement of target titanium alloy components, and adding linear or strip alloy elements in a zonal or strip form, wrapping the granular alloy into a strip shape by adopting an aluminum foil, packaging in a pure titanium welded pipe, compacting, and sealing two ends to form an alloy package; (2) The preparation of the electrode comprises the steps of adding titanium sponge and an alloy bag in layers according to a proportion, adopting a horizontal or vertical press to press the electrode, and forming a composite electrode structure by pressing; (3) Electrode assembly welding, namely drying the electrode in an oven, and welding the electrode into a specified length by adopting argon shielded welding; (4) Smelting by adopting a vacuum consumable arc smelting furnace; (5) And (3) cooling and ingot discharging, namely setting cooling time according to the specification of the electrode, cooling, discharging air, and taking out the titanium ingot. The linear or strip-shaped alloy elements can be Al and Fe, the Al elements are added in aluminum strip-shaped areas, and the Fe elements are added in iron wire areas. In some embodiments, the particulate alloy is at least one of AlCr, alMo, alB, alV. In some embodiments, the pressure of the pressed electrode in the electrode preparation process is not less than 250MPa, and the density of the pressed electrode is not less than 3.2g/cm < 3 >. In some embodiments, both outer layers of the composite electrode structure are recycled titanium alloy. In some embodiments, the drying temperature in the electrode assembly welding is 180-200 ℃. In some embodiments, when a vacuum consumable arc melting furnace is used for melting, vacuum is pumped to 0.1-100 Pa. In some embodiments, the smelting parameters in the smelting process are set according to electrode size, equipment type. In some embodiments, the cooling time is 60 to 180 minutes. In some embodiments, the average deviation of each element in the titanium ingot from the target value is within-0.08%. Compared with the prior art, the multielement packaging and electrode assembly welding smelting method based on the titanium alloy reclaimed material has the following advantages: The aluminum foil and pure titanium welded tube are adopted for encapsulation, so that the granular alloy is prevented from falling in the assembly welding process, the addition stability is improved, the alloy package is welded on an electrode partition welding structure in a recla