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Sintered flux for LPG ship welding and preparation method and application thereof

A technology of sintered flux and form, applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of late start and achieve the effect of improving performance

Active Publication Date: 2018-09-28
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

For the welding materials used in LPG ship construction, domestic related research started relatively late, and some experience has been accumulated, but it still needs to be further improved and improved.

Method used

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  • Sintered flux for LPG ship welding and preparation method and application thereof
  • Sintered flux for LPG ship welding and preparation method and application thereof
  • Sintered flux for LPG ship welding and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0066] A sintered flux for LPG ship welding is a fluorine-alkaline sintered flux, and the main slag system is mainly composed of CaF 2 -MgO-Al 2 o 3 -CaO-SiO 2 System composition, comprising the following components by mass parts:

[0067]

[0068] The preparation method of described LPG ship welding sintered flux, comprises the steps:

[0069] (1) each component of the sintered flux used for LPG ship welding is carried out batching except potassium-sodium water glass and dry-mixed to obtain a mixture;

[0070] (2) wet mixing the mixture prepared by step (1) with potassium-sodium water glass to obtain a wet mixture;

[0071] (3) The wet mixture prepared in step (2) is granulated in a granulation tray, dried at 350°C, and sintered at a high temperature of 700°C to obtain sintered flux for LPG ship welding, wherein the particle size of the sintered flux for LPG ship welding is 12 to 40 mesh.

Embodiment 2

[0073] A sintered flux for LPG ship welding is a fluorine-alkaline sintered flux, and the main slag system is mainly composed of CaF 2 -MgO-Al 2 o 3 -CaO-SiO 2 System composition, comprising the following components by mass parts:

[0074]

[0075] The preparation method of described LPG ship welding sintered flux, comprises the steps:

[0076] (1) each component of the sintered flux used for LPG ship welding is carried out batching except potassium-sodium water glass and dry-mixed to obtain a mixture;

[0077] (2) wet mixing the mixture prepared by step (1) with potassium-sodium water glass to obtain a wet mixture;

[0078] (3) Granulate the wet mixture obtained in step (2) in a granulation tray, dry at 300°C, and sinter at a high temperature of 660°C to obtain sintered flux for LPG ship welding, wherein the particle size of the sintered flux for LPG ship welding is 12 to 40 mesh.

Embodiment 3

[0080] A sintered flux for LPG ship welding is a fluorine-alkaline sintered flux, and the main slag system is mainly composed of CaF 2 -MgO-Al 2 o 3 -CaO-SiO 2 System composition, comprising the following components by mass parts:

[0081]

[0082]

[0083] The preparation method of described LPG ship welding sintered flux, comprises the steps:

[0084] (1) each component of the sintered flux used for LPG ship welding is carried out batching except potassium-sodium water glass and dry-mixed to obtain a mixture;

[0085] (2) wet mixing the mixture prepared by step (1) with potassium-sodium water glass to obtain a wet mixture;

[0086] (3) The wet mixture obtained in step (2) is granulated in a granulation tray, dried at 400°C, and sintered at a high temperature of 750°C to obtain sintered flux for LPG ship welding, wherein the particle size of the sintered flux for LPG ship welding is 12 to 40 mesh.

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Abstract

The invention belongs to the technical field of welding materials, and in particular relates to sintered flux for LPG ship welding and a preparation method and application thereof. The sintered flux for LPG ship welding is fluorine alkaline sintered flux which is prepared from the following components in parts by mass: 12-18 parts of GaF2, 25-33 parts of MgO, 15-20 parts of Al2O3, 5-8 parts of CaO, 9-15 parts of SiO2, 5-9 parts of TiO2, 0.5-2.5 parts of MnO, 1-3 parts of rare earth ferrosilicon, 0.5-2 parts of ZrO2, 0.1-0.5 part of ferroboron, 1-3 parts of metal alloy and 15-20 parts of waterglass. The flux is matched with an EH14 welding wire for submerged-arc welding, is relatively good in manufacturability, excellent in low temperature toughness, suitable for high heat input welding ofLPG ship construction, high in low temperature toughness, good in crack sensitivity and relative low in cost, and has a relatively good market promotional prospect and a good economic benefit.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a sintered flux for LPG ship welding and its preparation method and application. Background technique [0002] With the rapid development of my country's economy, the shortage of oil resources and the strengthening of national environmental protection, the development of liquefied petroleum gas (LPG) has become a hot spot in my country's energy development and has been paid more and more attention. [0003] In recent years, LPG projects have been booming, and LPG shipbuilding projects have also gradually increased. The demand for welding consumables for LPG shipbuilding and welding has also gradually increased, especially submerged arc welding consumables. At present, they are mainly imported from South Korea, Japan and other countries. It is relatively high and the procurement cycle is long, which has certain limitations on the implementation of domestic LP...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K35/362B23K35/40
CPCB23K35/3602B23K35/362B23K35/40
Inventor 宋聚海王亚彬徐飞王志银
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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