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High-basicity and high-tenacity submerged-arc welding flux for oceaneering and preparation method of high-basicity and high-tenacity submerged-arc welding flux

A submerged arc flux and marine engineering technology, applied in welding equipment, metal processing equipment, welding medium, etc., can solve the problems of high drying temperature, poor impact toughness, etc., achieve lower drying temperature, low moisture absorption, Effect of improving slag removal performance

Active Publication Date: 2014-10-15
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a high-alkalinity, high-toughness submerged arc welding flux for marine engineering and a preparation method thereof, especially a special high-alkalinity and high-toughness submerged arc welding flux for welding special steel E-grade thick plates for marine engineering, It aims to solve the technical problems of high drying temperature before the use of the existing flux and poor low-temperature impact toughness of the weld

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  • High-basicity and high-tenacity submerged-arc welding flux for oceaneering and preparation method of high-basicity and high-tenacity submerged-arc welding flux

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preparation example Construction

[0039] The embodiment of the present invention also provides a preparation method of high-alkalinity and high-toughness submerged arc welding flux for marine engineering, such as figure 1 shown, including the following steps:

[0040] Step S101, selecting materials according to the raw material components of the submerged arc welding flux, re-inspecting the raw materials, performing coarse crushing, fine crushing, and powder processing, processing them into powder, and weighing and preparing materials according to the mass ratio of raw material components;

[0041] Step S102, adding the prepared raw materials into a dry blender for dry blending, then adding the uniformly stirred powder into a wet blender, adding water glass for wet blending, and stirring thoroughly;

[0042] Step S103, sending the uniformly stirred starting material into a granulator for granulation;

[0043]Step S104, drying the produced granular flux with hot air and then sending it to a drying furnace for ...

Embodiment 1

[0051] Flux composition and mass percentage:

[0052] MgO: 25 parts; CaF 2 : 20 copies; Al 2 o 3 : 15 parts; TiO 2 : 16 parts; SiO 2 : 8 parts; BaO: 11 parts; CaO: 3 parts; MnO: 1 part; 2 o 3 : 0.5 part, the balance is unavoidable impurities.

[0053] Alkalinity of flux: 2.5;

[0054] Preparation method: After re-inspecting the required raw materials, carry out the processes of coarse crushing, fine crushing, and powder grinding, and process them into powders with different standard particle sizes. After sieving, carry out proportioning and weighing according to the formula, then put it into a dry blender for dry blending, put the evenly stirred powder into a wet blender, add water glass with 20% of the powder mass for wet blending, and stir well , the stirred raw material is sent to the granulator for granulation, and the granulated flux produced is sent to the drying furnace after being dried by hot air, and is dried at a temperature of 150-200°C, and sieved after re...

Embodiment 2

[0057] Flux composition and mass percentage:

[0058] MgO: 26 parts; CaF 2 : 20 copies; Al 2 o 3 : 20 parts; TiO 2 : 15 parts; SiO 2 : 4 parts; BaO: 11 parts; CaO: 3.4 parts; MnO: 0; B 2 o 3 : 0.1 part, the balance is unavoidable impurities.

[0059] Alkalinity of flux: 2.8;

[0060] Preparation method: After re-inspecting the required raw materials, carry out the processes of coarse crushing, fine crushing, and powder grinding, and process them into powders with different standard particle sizes. After sieving, carry out proportioning and weighing according to the formula, then put it into a dry blender for dry blending, put the evenly stirred powder into a wet blender, add water glass with 20% of the powder mass for wet blending, and stir well , the stirred raw material is sent to the granulator for granulation, and the granulated flux produced is sent to the drying furnace after being dried by hot air, and is dried at a temperature of 150-200°C, and sieved after rem...

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Abstract

The invention provides high-basicity and high-tenacity submerged-arc welding flux applicable to the technical field of welding materials. The high-basicity and high-tenacity submerged-arc welding flux comprises, by weight, 23-26 parts of MgO, 13.5-21 parts of CaF2, 14-20 parts of Al2O3, 15-22 parts of TiO2, 4-8 parts of SiO2, 11-18 parts of BaO, 3-5 parts of CaO, 0-3 parts of MnO, 0.1-0.5 part of B2O3. The lower limit of drying temperature before use of the submerged-arc welding flux is 300 DEG C. By the high-basicity and high-tenacity submerged-arc welding flux, low-temperature impact tenacity of welding seams is improved, and the welding seams have excellent technical welding performance; via reasonable selection and proportional matching of raw materials, the prepared welding flux is low in moisture absorption rate, drying temperature before use of the welding flux is reduced, and energy consumption is reduced as well.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a high-alkalinity and high-toughness submerged arc welding flux for marine engineering and a preparation method thereof. Background technique [0002] With the gradual reduction of land resources, countries all over the world are actively developing resources in the ocean field. There are a large number of oil, gas and wind resources in my country's sea areas. They are marine energy necessary for the development of the national economy. Marine development has become an important part of the national development plan. During the "13th Five-Year Plan" period, my country invested 350 billion yuan to vigorously develop ocean transportation and High steel grade wide and thick steel plates for offshore oil industry, construction of drilling platforms and other offshore engineering. Structural steel for marine engineering (marine steel) has become a key research and development object f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28
CPCB23K35/3601B23K35/362B23K2101/185B23K2103/04
Inventor 卢伟吕奎清刘玉双刘东郑成概汪涛
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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