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Welding wire of Ti62A alloy suitable for manned submersible and preparing method of welding wire

A technology of manned submersibles and alloys, applied in welding equipment, metal processing equipment, welding media, etc., can solve problems such as lack of

Active Publication Date: 2020-10-13
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of lack of welding wire for Ti62A alloy used in manned submersibles in the prior art, the invention provides a welding wire suitable for Ti62A alloy used in manned submersibles and its preparation method

Method used

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  • Welding wire of Ti62A alloy suitable for manned submersible and preparing method of welding wire

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preparation example Construction

[0024] Above-mentioned a kind of welding wire preparation method applicable to manned submersible Ti62A alloy comprises the following steps:

[0025] Step 1: Select grade 0 sponge titanium, aluminum-vanadium master alloy, aluminum-chromium master alloy, aluminum-zirconium master alloy, aluminum-molybdenum master alloy and aluminum-tin master alloy as raw materials for mixing treatment, and then press and assemble welding, using vacuum electron Beam welding to obtain consumable electrodes.

[0026] Step 2: The consumable electrode obtained in Step 1 is smelted twice successively to obtain a secondary ingot.

[0027] Step 3: peeling off the secondary ingot obtained in step 2, cutting off the riser, and then forging the billet to obtain a billet.

[0028] Step 4: Perform free forging on the blank obtained in step 3. The free forging temperature is 950~1100°C, the forging ratio is not greater than 2:1, the forging times are not less than 20 times, and the holding time is 30~60 mi...

Embodiment 1

[0031] The welding wire is made of 0-grade sponge titanium, aluminum-vanadium master alloy, aluminum-chromium master alloy, aluminum-zirconium master alloy, aluminum-molybdenum master alloy and aluminum-tin master alloy. The components include Al: 6% and V: 1% by weight , Cr: 0.5%, Zr: 2%, Mo: 2%, Sn: 1%, O: 0.08%, and the balance is Ti and unavoidable impurities.

[0032] Grade 0 sponge titanium, aluminum-vanadium master alloy, aluminum-chromium master alloy, aluminum-zirconium master alloy, aluminum-molybdenum master alloy and aluminum-tin master alloy are respectively pressed into electrodes according to the above mass percentages, and the electrodes are welded by vacuum electron beam welding. Electric arc furnace consumption.

[0033] The ingot is prepared by vacuum consumable arc melting technology, and the pre-melting vacuum degree should reach 10 -2 Pa, in order to ensure the uniform composition of the alloy, the number of smelting times is ≥ 2 times, after the cast in...

Embodiment 2

[0043] The welding wire is made of 0-grade sponge titanium, aluminum-vanadium master alloy, aluminum-chromium master alloy, aluminum-zirconium master alloy, aluminum-molybdenum master alloy and aluminum-tin master alloy. The components include Al: 5% and V: 1% by weight , Cr: 1%, Zr: 2%, Mo: 2.5%, Sn: 1.5%, O: 0.08%, and the balance is Ti and unavoidable impurities.

[0044] Grade 0 sponge titanium, aluminum-vanadium master alloy, aluminum-chromium master alloy, aluminum-zirconium master alloy, aluminum-molybdenum master alloy and aluminum-tin master alloy are respectively pressed into electrodes according to the above mass percentages, and the electrodes are welded by vacuum electron beam welding. Electric arc furnace consumption.

[0045] The ingot is prepared by vacuum consumable arc melting technology, and the pre-melting vacuum degree should reach 10 -2 Pa, in order to ensure the uniform composition of the alloy, the number of smelting times is ≥ 2 times, after the cast ...

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Abstract

The invention discloses a welding wire of Ti62A alloy suitable for a manned submersible and a preparing method of the welding wire. The welding wire is prepared from grade-zero sponge titanium, aluminum-vanadium intermediate alloy, aluminum-chromium intermediate alloy, aluminum-zirconium intermediate alloy, aluminum-molybdenum intermediate alloy and aluminum-stannum intermediate alloy. The components include, by weight percentage, 4.5-6.75% of Al, 0.5-1.5% of V, 0.3-1.75% of Cr, 1.5-2.5% of Zr, 1.5-3.0% of Mo, 0.5-2.0% of Sn and the balance Ti and inevitable impurities. Through pressing, assembly-welding, two times of smelting, cogging forging, free forging, rolling, wiredrawing, straightening, polishing, and vacuum annealing, the welding wire of the Ti62A alloy suitable for the manned submersible is obtained, wherein the performance of the welding wire meets the conditions that impact absorbing energy KV2 is larger than or equal to 20 J, the tensile strength Rm is larger than or equalto 1010 MPa, the welding wire is suitable for Ti62A alloy TIG welding, MIG welding, etc., and the requirements for matched welding wires special for the Ti62A alloy of domestic manned submersibles are met.

Description

technical field [0001] The invention relates to the welding field of Ti62A alloys for manned submersibles, in particular to a welding wire suitable for Ti62A alloys for manned submersibles and a preparation method thereof. Background technique [0002] Titanium and titanium alloys have excellent properties such as high specific strength, corrosion resistance, and non-magnetism, especially in seawater and acidic hydrocarbons. They have good corrosion resistance and are the preferred materials for ships and ocean engineering. Therefore, titanium alloys are known as for "Ocean Metal". Marine titanium alloy is an important research and development direction of my country's titanium industry, and it is an extremely important application field in the future. [0003] With the substantial increase in the diving depth of my country's manned submersibles, its service environment has become harsher, and the spherical shell of the manned cabin has higher and higher requirements for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/32B23K35/40
CPCB23K35/325B23K35/40
Inventor 吕逸帆雷家峰刘希林安飞鹏
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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