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A preparation method of titanium alloy large ingot consumable electrode

A technology for consumable electrodes and titanium alloys is applied in the field of preparation of large-scale titanium alloy ingot consumable electrodes to achieve the effects of reducing solder joints, reducing the risk of falling bullets, and improving work efficiency

Active Publication Date: 2018-11-13
西安赛特思迈钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a titanium alloy large-scale ingot consumable electrode, so as to reduce the solder joints of the subsequent consumable electrode and reduce the problem of bullet drop caused by poor welding during the smelting process

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  • A preparation method of titanium alloy large ingot consumable electrode
  • A preparation method of titanium alloy large ingot consumable electrode

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Embodiment 1

[0033] Example 1 The preparation method of the Φ380-100Kg self-consumable smelting electrode block of TC20 (Ti-6Al-7Nb) alloy: the raw material is selected from 0-grade sponge titanium, NbTi master alloy, and industrial pure aluminum beans, and the nominal proportion is according to Ti-6.2%Al -7.0% Nb (wt%). Pre-place a cross-shaped auxiliary bracket in the mold cavity of Φ380 to divide the cavity into four equal parts. Batching and weighing four times according to the weight of 25Kg respectively, and pour into four grid files. After loosening and taking out the bracket, press it into a TC20 titanium alloy electrode block of Φ380-100Kg at one time. The thickness of the pressed large single-weight electrode block is about 300mm. A total of 30 electrode blocks were prepared and welded into 4 consumable electrodes. Subsequent vacuum self-consumption smelting three times to obtain Φ620-3000Kg ingots.

[0034] In the prior art, if it is necessary to smelt Φ620-3000Kg ingots, it...

Embodiment 2

[0035] Embodiment 2 The pressing method of the Φ460-150Kg self-consumable smelting electrode block of the TC4 (Ti-6Al-4V) alloy: the raw materials are selected from grade 0 or grade 1 sponge titanium, AlV55 master alloy, and industrial pure aluminum beans, and the nominal ratio is according to Ti- 6.2% Al-4.2% V (wt%). In the mold cavity of Φ460, pre-place the middle circular and external launch-shaped auxiliary brackets to divide the cavity into six equal parts. Batching and weighing six times according to the weight of 25Kg respectively, and pour into six grid files. After loosening and taking out the bracket, press it into a Φ460-150Kg TC4 titanium alloy electrode block at one time. The thickness of the pressed large single-weight electrode block is about 280mm. A total of 20 electrode blocks were prepared and welded into 2 consumable electrodes. Subsequent vacuum self-consumption smelting twice to obtain Φ620-3000Kg ingots.

[0036] The auxiliary bracket 1 for pressing...

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Abstract

The invention discloses a preparation method of a titanium alloy large cast ingot consumable electrode. The method comprises the steps that a die cavity is used, an auxiliary support is placed in the die cavity, and the auxiliary support divides the inner space of the die cavity into N grids; titanium sponge, industrial pure aluminum and intermediate ally are used as raw materials, material preparation and weighing are carried out according to the ingredients of the to-be-prepared titanium alloy, and the obtained mixed raw material is poured into the N grids; the auxiliary support is taken out of the die cavity; short-stroke vertical pressing is adopted for pressing the mixed raw material in the die cavity to be a large-piece-weight electrode block at a time; and the steps 1-3 are repeatedly carried out, multiple large-piece-weight electrode blocks are obtained, and the obtained multiple large-piece-weight electrode blocks are assembled and welded to be the consumable electrode. The welding spots of the follow-up consumable electrode are reduced, and the problem that falling is caused by poor welding in the melting process is solved.

Description

【Technical field】 [0001] The invention belongs to the technical field of titanium alloy smelting, and in particular relates to a method for preparing a large titanium alloy ingot consumable electrode. 【Background technique】 [0002] Vacuum consumable melting is a commonly used melting method for titanium and titanium alloys. According to the characteristics of the vacuum consumable smelting process, the alloy raw material is used as a consumable electrode under the action of a strong current to melt into the crucible segment by segment, and the solution is continuously condensed into an ingot in the crystallizer (crucible) from bottom to top. When the liquid metal passes through the arc region to the crystallizer in the form of molten droplets, maintains and solidifies, a series of physical and chemical reactions occur to refine the metal and achieve the purpose of purifying the metal, improving the crystal structure and improving performance. Vacuum consumable smelting is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/02C22C1/04C22C14/00C22B9/21
CPCB22F3/02C22B9/20C22C1/0458C22C14/00
Inventor 毛江虹罗斌莉杨晓康魏芬绒刘煦
Owner 西安赛特思迈钛业有限公司