Crack source brittle bead surfacing welding wire for marine titanium alloy and preparation method thereof

A technology for surfacing welding wire and titanium alloy, which is applied in the field of marine titanium alloy toughness assessment test materials to achieve the effect of easier welding

Active Publication Date: 2019-10-11
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

[0005] The present invention aims to provide a crack source brittle bead surfacing welding wire of marine titanium alloy and its preparation method to solve the problem of introducing natural sharp cracks in the application process of marine titanium alloy toughness assessment such as drop weight test and explosion test , and further improve the marine titanium alloy drop weight test, explosion test methods, etc., to make the assessment and evaluation system of marine titanium alloy application research more complete

Method used

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  • Crack source brittle bead surfacing welding wire for marine titanium alloy and preparation method thereof
  • Crack source brittle bead surfacing welding wire for marine titanium alloy and preparation method thereof
  • Crack source brittle bead surfacing welding wire for marine titanium alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1: Preparation of crack source brittle bead surfacing welding wire of Ti-2Al-6Mo-5V-3Cr-2Sn marine titanium alloy:

[0022] 1) Weigh the raw materials according to the ingredients listed in Example 1 in Table 1, and mix 2wt.% aluminum element, 6wt.% molybdenum element, 5wt.% vanadium element, 3wt.% chromium element, 2wt.% The tin element and industrial grade 1 sponge titanium are mixed and pressed into electrodes;

[0023] 2) The electrode prepared in step 1) is prepared into an ingot by vacuum consumable arc melting. The vacuum degree of pre-melting should reach 1Pa. In order to ensure uniform alloy composition, the number of vacuum consumable arc melting should not be less than three times;

[0024] 3), the ingot prepared in step 2) is subjected to T β +150℃ blanking, α+β phase zone forging into forgings;

[0025] 4), rolling the forging prepared in step 3) into a wire rod;

[0026] 5) The wire rod prepared in step 4) is drawn into a round wire with a sp...

Embodiment 2

[0027] Example 2: Preparation of crack source brittle bead surfacing welding wire for Ti-7Al-3Mo-5V-2Cr-1Sn alloy marine titanium alloy:

[0028] 1) Weigh the raw materials according to the ingredients listed in Example 2 in Table 1, and mix 7wt.% aluminum element, 3wt.% molybdenum element, 5wt.% vanadium element, 2wt.% chromium element, 1wt.% The tin element and industrial grade 1 sponge titanium are mixed and pressed into electrodes;

[0029] 2) The electrode prepared in step 1) is prepared into an ingot by vacuum consumable arc melting. The vacuum degree of pre-melting should reach 1Pa. In order to ensure uniform alloy composition, the number of vacuum consumable arc melting should not be less than three times;

[0030] 3), the ingot prepared in step 2) is subjected to T β +150℃ blanking, α+β phase zone forging into forgings;

[0031] 4), rolling the forging prepared in step 3) into a wire rod;

[0032] 5) The wire rod prepared in step 4) is drawn into a round wire with ...

Embodiment 3

[0033] Example 3: Preparation of crack source brittle bead surfacing welding wire for Ti-5Al-4Mo-6V-2Cr-5Sn alloy marine titanium alloy:

[0034] 1) Weigh the raw materials according to the ingredients listed in Example 3 in Table 1, and mix 5wt.% aluminum element, 4wt.% molybdenum element, 6wt.% vanadium element, 2wt.% chromium element, 5wt.% The tin element and industrial grade 1 sponge titanium are mixed and pressed into electrodes;

[0035] 2) The electrode prepared in step 1) is prepared into an ingot by vacuum consumable arc melting. The vacuum degree of pre-melting should reach 1Pa. In order to ensure uniform alloy composition, the number of vacuum consumable arc melting should not be less than three times;

[0036] 3), the ingot prepared in step 2) is subjected to T β +150℃ blanking, α+β phase zone forging into forgings;

[0037] 4), rolling the forging prepared in step 3) into a wire rod;

[0038] 5) The wire rod prepared in step 4) is drawn into a round wire with ...

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Abstract

The invention relates to the field of boat titanium alloy toughness investigation test materials applied to a boat titanium alloy application research and evaluation system, and particularly relates to a brittle weld bead surfacing welding wire for a crack source of titanium alloy applied to a boat and a preparation method of the brittle weld bead surfacing welding wire. The welding wire is prepared from the following elements and components in percentage by mass: 2.0-1.0 percent of aluminum, 3.0-6.0 percent of molybdenum, 5.0-10.0 percent of vanadium, 2.0-5.0 percent of chromium, 1.0-5.0 percent of tin and the balance of titanium. The welding wire provided by the invention can solve the problem about natural sharp cracks generated in a boat titanium alloy toughness investigation application process of a drop-weight test, an explosion test and the like, and thus the drop-weight test and explosion test methods for the titanium alloy applied to the boat can be improved, and the boat titanium alloy application research and evaluation system is more complete.

Description

technical field [0001] The invention relates to the field of marine titanium alloy toughness assessment test materials in the marine titanium alloy application research and evaluation system, in particular to a marine titanium alloy crack source brittle bead surfacing welding wire and a preparation method thereof. Background technique [0002] The crack source brittle weld bead has been applied in many metal toughness performance assessment tests. In the application, the crack source brittle weld bead is first surfacing on the metal base material, and then the brittle weld bead is impacted by an external load and causes the brittle weld bead to crack to introduce a sharp natural crack on the brittle weld bead, which passes through the brittle weld bead. The natural cracks in the metal base material are extended to the metal base material to produce sharp natural cracks in the metal base material. Finally, the cracks on the metal base material are used to simulate the actual ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/32B23K35/40
Inventor 尹艳超张斌斌李士凯
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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