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A method for improving visibility and stability of titanium alloy in argon-filled smelting process

A titanium alloy and visibility technology is applied in the field of improving the visibility and stability of the argon-filled smelting process of titanium alloys.

Active Publication Date: 2022-08-02
西部超导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

At the same time, in order to avoid glow discharge during smelting, the pressure of argon filling is generally greater than 10000Pa, which inevitably leads to large voltage fluctuations, and at the same time, the molten pool becomes dark and the visibility decreases until it is invisible

Method used

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  • A method for improving visibility and stability of titanium alloy in argon-filled smelting process
  • A method for improving visibility and stability of titanium alloy in argon-filled smelting process
  • A method for improving visibility and stability of titanium alloy in argon-filled smelting process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, Prepare the electrodes:

[0038] Turn the consumable electrode ingot with a diameter of Φ360mm to remove the ingot crown;

[0039] Step 2, Electrode Welding:

[0040] Select a titanium alloy auxiliary electrode with a diameter of Φ240mm, and assemble it with the ingot of Φ360mm in step 1 in a crucible with a diameter of Φ440mm. Turn on the vacuum pump until the vacuum reaches 4.5Pa, and start the arc to weld the auxiliary electrode and the consumable electrode. . The welding current is 4kA, the welding voltage is 26V, the welding arc is 6A, and the welding time is 8min. Cool down for 30 minutes after welding, turn off the vacuum pump set until the vacuum reaches the atmospheric state, open the furnace chamber for welding inspection, clean the welding lumps and floating ash, and then close the furnace chamber again;

[0041] Step 3: Connect 8 bottles of argon with a purity of 99.99% in parallel and connect them to the argon filling valve; turn on the vacuum pu...

Embodiment 2

[0045] Step 1, Prepare the electrodes:

[0046] Turn the consumable electrode ingot with a diameter of Φ460mm to remove the ingot crown;

[0047] Step 2, Electrode Welding:

[0048] Select a titanium alloy auxiliary electrode with a diameter of Φ280mm, and assemble it with the ingot of Φ460mm in step 1 in a crucible with a diameter of Φ560mm, turn on the vacuum pump until the vacuum reaches 4.0Pa, and start the arc to weld the auxiliary electrode and the consumable electrode. . The welding current is 6kA, the welding voltage is 28V, the welding arc is 10A, and the welding time is 10min. Cool down for 40 minutes after welding, turn off the vacuum pump set until the vacuum reaches the atmospheric state, open the furnace chamber for welding inspection, clean the welding lumps and floating ash, and then close the furnace chamber again;

[0049] Step 3: Connect 10 bottles of argon with a purity of 99.97% in parallel and connect them to the argon filling valve; turn on the vacuum...

Embodiment 3

[0053] Step 1, Prepare the electrodes:

[0054] Turn the consumable electrode ingot with a diameter of Φ560mm to remove the ingot crown;

[0055] Step 2, Electrode Welding:

[0056] Select the titanium alloy auxiliary electrode with a diameter of 320mm, and assemble it with the ingot of 560mm in step 1 in a crucible with a diameter of 640mm. Turn on the vacuum pump until the vacuum reaches 5Pa, and start the arc to weld the auxiliary electrode and the consumable electrode. The welding current is 8kA, the welding voltage is 29V, the welding arc is 15A, and the welding time is 12min. Cool down for 60 minutes after welding, turn off the vacuum pump set until the vacuum reaches the atmospheric state, open the furnace chamber for welding inspection, clean the welding lumps and floating ash, and then close the furnace chamber again;

[0057] Step 3: Connect 12 bottles of argon with a purity of 99.98% in parallel and connect them to the argon filling valve; turn on the vacuum pump ...

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Abstract

The invention discloses a control method for improving the visibility and stability of the argon-filled smelting process of titanium alloys. After removing the floating ash on the surface, install the furnace again and evacuate it; prepare argon with high purity in parallel and connect it with the argon filling valve. After the vacuum degree reaches a certain requirement, open the argon filling valve to flush the pipeline, and set reasonable argon filling parameters and voltage control parameters. Arc smelting can improve voltage stability, and at the same time achieve the effect of visible molten pool in the whole smelting process.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a method for improving the visibility and stability of a titanium alloy in an argon-filled smelting process. Background technique [0002] Titanium alloys have excellent specific strength, specific stiffness and corrosion resistance, and are widely used in aerospace. At times, it is necessary to fill argon gas and increase the pressure in the furnace to inhibit the volatilization of Mn element. At the same time, in order to avoid glow discharge during smelting, the pressure of argon gas is generally greater than 10000Pa, which inevitably leads to large voltage fluctuations, and at the same time, the molten pool becomes dark and the visibility is reduced until it is invisible. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a method for improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C14/00
CPCC22C1/03C22C14/00
Inventor 吴明华正利梁敬凡刘鹏
Owner 西部超导材料科技股份有限公司