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Sintered flux for efficient submerged arc welding and its production process

A technology of sintering flux and production process, which is applied in welding medium, manufacturing tools, welding equipment, etc., can solve the problems that the mechanical properties can only meet the requirements of 2Y level, the height requirement of the factory building is high, and the time wasted by turning over the plate, etc., to achieve slag removal Good, uniform weld width and height, and improved mechanical properties

Active Publication Date: 2016-08-24
锦州公略焊接技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: ① Due to the large area of ​​the plate, more lifting equipment is required when turning the plate, and the height of the factory building is high; ② Turning the plate is a waste of time and the welding efficiency is low
CN101537550 discloses "a submerged arc sintering flux and its production method". The sintering flux can be used for single-sided welding and double-sided welding, but it can only satisfy the impact absorption energy at 0°C ≥ 34KJ, and its mechanical properties can only meet 2Y level The problem is that it is not suitable for high-speed welding, and cannot well meet the production requirements of 3Y-level standards that require the impact absorption energy at -20°C to be ≥ 34KJ, which is required by the classification societies of various countries.

Method used

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  • Sintered flux for efficient submerged arc welding and its production process
  • Sintered flux for efficient submerged arc welding and its production process
  • Sintered flux for efficient submerged arc welding and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The front side flux consists of the following components by weight percentage:

[0042] al 2 o 3 : 5 kg, CaO: 8 kg, CaF 2 : 5 kg, MgO: 25 kg, SiO 2 : 15.2 kg, TiO 2 : 8 kg, B 2 o 3 : 0.8 kg, Fe powder: 30 kg, silicon-calcium alloy: 3 kg;

[0043] The reverse side flux consists of the following components by weight percentage:

[0044] al 2 o 3 :50kg, CaF 2 : 5 kg, MgO: 10 kg, MnO: 8.2 kg, SiO 2 : 10 kg, TiO 2 : 7 kg, Fe 2 o 3 : 4.8 kg, silicon-calcium alloy: 5 kg;

[0045] Flux production is carried out using the following processes:

[0046] Bauxite, wollastonite, fluorite, dead burnt magnesia, quartz, rutile titanium dioxide, borax, silicon-calcium alloy and iron powder are used as raw materials, and ingredients are prepared according to the composition of the positive flux, put into a mixer and stirred evenly to obtain a mixed material, adding a binder accounting for 18% of the total mass of the mixture, the binder is potassium silicate and sodium si...

Embodiment 2

[0049] The front side flux consists of the following components by weight percentage:

[0050] al 2 o 3 : 6.8 kg, CaO: 5 kg, CaF 2 : 7 kg, MgO: 21.2 kg, SiO 2 : 18.5 kg, TiO 2 : 3 kg, B 2 o 3 : 1.5 kg, Fe powder: 32 kg, silicon-calcium alloy: 5 kg;

[0051] The reverse side flux consists of the following components by weight percentage:

[0052] al 2 o 3 : 42 kg, CaF 2 : 10 kg, MgO: 6 kg, MnO: 5 kg, SiO 2 : 18 kg, TiO 2 : 9 kg, Fe 2 o 3 : 3 kg, silicon-calcium alloy: 7 kg;

[0053] Flux production is carried out using the following processes:

[0054] Bauxite, wollastonite, fluorite, dead burnt magnesia, quartz, rutile titanium dioxide, borax, silicon-calcium alloy and iron powder are used as raw materials, and ingredients are prepared according to the composition of the positive flux, put into a mixer and stirred evenly to obtain a mixed material, adding a binder accounting for 20% of the total mass of the mixture, the binder is potassium silicate and sodium ...

Embodiment 3

[0057] The front side flux consists of the following components by weight percentage:

[0058] al 2 o 3 : 3 kg, CaO: 10 kg, CaF 2 : 3 kg, MgO: 18 kg, SiO 2 : 20 kg, TiO 2 : 5 kg, B 2 o 3 : 2 kg, Fe powder: 38 kg, silicon-calcium alloy: 1 kg;

[0059] The reverse side flux consists of the following components by weight percentage:

[0060] al 2 o 3 :40kg, CaF 2 : 8 kg, MgO: 5 kg, MnO: 12 kg, SiO 2 : 12 kg, TiO 2 : 12 kg, Fe 2 o 3 : 1 kg, silicon-calcium alloy: 10 kg;

[0061] Flux production is carried out using the following processes:

[0062] Bauxite, wollastonite, fluorite, dead burnt magnesia, quartz, rutile titanium dioxide, borax, silicon-calcium alloy and iron powder are used as raw materials, and ingredients are prepared according to the composition of the positive flux, put into a mixer and stirred evenly to obtain a mixed material, adding a binder accounting for 19% of the total mass of the mixture, the binder is potassium silicate and sodium silicat...

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Abstract

The invention discloses sintered flux for efficient submerged arc welding and a production technology of the sintered flux. The sintered flux comprises front face flux and reverse face flux, the front face flux is composed of Al2O3, CaO, CaF2, MgO, SiO2, TiO2, B2O3, Fe powder and silicon calcium alloy, and the reverse face flux is composed of Al2O3, CaF2, MgO, MnO, SiO2, TiO2, Fe2O3 and silicon calcium alloy. The technology comprises the steps that batching is performed on raw materials according to ingredients of the sintered flux, the raw materials are put into a blender for even blending, a mixed material is obtained, bonding agents are added in the mixed material for granulation, low-temperature drying is performed at the temperature of 200 DEG C to 300 DEG C, after screening, sintering is performed, screening is performed again, and the product sintered flux is obtained. The sintered flux can meet the technological requirement of the good single face for being welded into double faces, the reverse face welding way is stably formed, and the sintered flux is suitable for high-speed welding, has the good mechanical performance and meets the 3Y standard required by classification societies of various countries.

Description

technical field [0001] The invention relates to a sintered flux for high-efficiency submerged arc welding and a production process thereof. Background technique [0002] Welding technology plays an important role in shipbuilding. The improvement of welding efficiency and quality can shorten the shipbuilding cycle and is conducive to the development of high-tonnage shipbuilding. In the panel welding of shipbuilding, the traditional submerged arc automatic welding technology is to weld from one side first, and then flip the plate to weld the other side. This technology has the following disadvantages: ① Due to the large area of ​​the plate, more lifting equipment is required when turning the steel plate, and the height of the factory building is high; ② Turning the plate wastes time and the welding efficiency is low. [0003] With the development of welding technology, single-side welding and double-side forming technology is widely used in shipbuilding, which realizes one-si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
CPCB23K35/362
Inventor 徐瑛琪常凤华徐险峰孙学君
Owner 锦州公略焊接技术有限公司
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