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Double-submerged-arc-welding thermal curing gasket welding flux for marine thick steel plate and preparing method for double-submerged-arc-welding thermal curing gasket welding flux

A double-sided submerged arc and thermal curing technology, which is applied in arc welding equipment, welding equipment, welding equipment, etc., to achieve good welding quality, beautiful shape, and stable welding arc

Inactive Publication Date: 2017-11-03
SHANGHAI HULIN HEAVY IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no mature heat-curing flux technology for double-sided welding of thick steel plates for ships, so as to ensure that the back of the groove of the welded steel plate can obtain a stable shape and appearance, and a sound back weld bead

Method used

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  • Double-submerged-arc-welding thermal curing gasket welding flux for marine thick steel plate and preparing method for double-submerged-arc-welding thermal curing gasket welding flux

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preparation example Construction

[0032] The preparation method of the double-sided submerged arc welding heat-curing liner flux for marine thick steel plates comprises the following steps:

[0033] Step 1, first dry mix the powders of the components of the basic flux, dry mix evenly, add potassium sodium water glass for wet mixing, then granulate, bake at 200°C for 1 hour, and after screening, heat at 600-800°C Sinter for 2 hours, cool with the furnace, and pass through a 10-mesh to 50-mesh sieve to obtain the basic flux.

[0034] Step 2, use a curing agent accounting for 1-3% of the total weight of the basic flux to prepare an aqueous solution with a concentration of 44%, put it into a glass bottle and seal it for storage; put the resin accounting for 5-15% of the total weight of the basic flux into In a mortar, use a pestle to grind into a powder sample, and pack it into a bag and seal it.

[0035] Step 3, heat the basic flux obtained in step 1 at 180°C for 30 minutes, immediately spread the resin powder t...

Embodiment 1

[0039] A heat-cured backing flux for double-sided submerged arc welding of marine thick plates, the heat-cured backing flux is composed of basic flux, resin and curing agent, and the basic flux is composed of the following raw materials in weight percentage: magnesia: 28%; silicon Greystone: 22%; Alumina: 20%; Fluorite: 14%; Marble: 5%; Rutile: 5%; Ferrosilicon: 3%; Ferromanganese: 3%.

[0040] The preparation method of the heat-cured backing flux is to firstly dry mix the powders of all components of the basic flux, dry mix evenly, add water glass for wet mixing, then granulate, bake at 200°C for 1 hour, screen, and 600- Sinter at 800°C for 2 hours, cool with the furnace, and pass through a 10-mesh to 50-mesh sieve to obtain the basic flux. Then use 1-3% of curing agent accounting for the total weight of the basic flux to prepare an aqueous solution with a concentration of 44%, and put it into a glass bottle for sealed storage. Put the resin accounting for 5-15% of the total...

Embodiment 2

[0042] A heat-cured backing flux for double-sided submerged arc welding of marine thick plates, the flux is composed of basic flux, resin and curing agent, and the basic flux is composed of the following raw materials in weight percentage: magnesia: 30%; wollastonite: 20% %; Alumina: 22%; Fluorite: 12%; Marble: 4%; Rutile: 7%; Ferrosilicon: 3%; Ferromanganese: 2%.

[0043] The preparation method of the heat-cured backing flux is to firstly dry mix the powders of all components of the basic flux, dry mix evenly, add water glass for wet mixing, then granulate, bake at 200°C for 1 hour, screen, and 600- Sinter at 800°C for 2 hours, cool with the furnace, and pass through a 10-mesh to 50-mesh sieve to obtain the basic flux. Then use 1-3% of curing agent accounting for the total weight of the basic flux to prepare an aqueous solution with a concentration of 44%, and put it into a glass bottle for sealed storage. Put the resin accounting for 5-15% of the total weight of the basic f...

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Abstract

The invention provides double-submerged-arc-welding thermal curing gasket welding flux for a marine thick steel plate and a preparing method for the double-submerged-arc-welding thermal curing gasket welding flux. The thermal curing gasket welding flux is made from base welding flux, resin and a curing agent. The base welding flux comprises, by weight, 20%-32% of magnesite clinker, 15%-30% of wollastonite, 15%-25% of aluminum oxide, 5%-15% of fluorite, 1%-10% of marble, 1%-10% of rutile, 1%-5% of silicon iron, and 1%-5% of manganese iron, the sum of the weight percentage of all constituents is 100%. The content of resin is 5%-15% of total weight of the base welding flux, and the content of the curing agent is 1%-3% of total weight of the base welding flux. After the double-submerged-arc-welding thermal curing gasket welding flux for the marine thick steel plate and the preparing method for the double-submerged-arc-welding thermal curing gasket welding flux are used, the welded arc is stable, slag detachability after welded is excellent, molding of the backside of a welding seam is attractive, the effects of being high in production efficiency, good in welding quality and low in welding flux cost are achieved, and the double-submerged-arc-welding thermal curing gasket welding flux for the marine thick steel plate and the preparing method for the double-submerged-arc-welding thermal curing gasket welding flux are suitable for a double-submerged-arc-welding technology of the marine thick steel plate.

Description

technical field [0001] The invention relates to a welding material, in particular to a double-sided submerged arc welding thermosetting backing flux for marine thick steel plates and a preparation method thereof, belonging to the technical field of welding materials. Background technique [0002] With the rapid development of my country's heavy industry, the submerged arc automatic welding process is widely used in industrial production due to its advantages of convenient operation, simple use, and no arc light. The research and development of flux focuses on the development of different kinds of welding materials and sintered flux in special welding environment. Patent CN103252597A (Application No.: 201310220355.7, Publication Date: 2013.08.21) discloses a thermally cured backing flux and its preparation method. In addition, patent CN 101564807 (application number: 200910134768.7, publication date: 2009.10.28) discloses a backing flux for single-sided submerged arc welding ...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K101/18B23K103/04B23K9/18
CPCB23K35/3602B23K9/18B23K35/362B23K2101/185B23K2103/04
Inventor 周鸿翔吴兴祥冯师超过奇敏周方明
Owner SHANGHAI HULIN HEAVY IND
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