Sintered flux for nickel base wire submerged arc welding

A technology of sintering flux and submerged arc welding, which is applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., and can solve the problems of unsatisfactory corrosion resistance of weld metal, pressure vessel design requirements, and uneven flux quality, etc. problems, to achieve good thermal slag removal performance, small welding spatter, and good flatness of lap joints

Active Publication Date: 2020-05-26
BEIJING JINWEI WELDING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of domestic supporting flux is uneven, and the welding process, weld quality, especially the corrosion resistance of the weld metal are far from meeting the design requirements of pressure vessels, so domestic applications mainly rely on imported materials, and imported welding materials have production costs High, long delivery cycle and other disadvantages

Method used

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  • Sintered flux for nickel base wire submerged arc welding
  • Sintered flux for nickel base wire submerged arc welding

Examples

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Embodiment 1

[0061] According to the components in the sintered flux designed by the present invention, 5 kinds of fluxes are prepared, numbered N1-N5. The weight percentages of each component of the 5 kinds of sintered fluxes are shown in Table 1, and the flux preparation method is as follows:

[0062] Proportionally weigh the required sintered flux group according to the formula, recheck the total weight, put it into a dry mixer for 20 minutes, dry mix it evenly, pour it into a wet mixer, add potassium and sodium silicate for wet mixing, and wet mix After uniformity, the wet powder is sent to the granulation tray through the conveyor belt for granulation. After the granulation is completed, it is sent to the low-temperature drying furnace through the conveyor belt and dried at 180-330°C for 35-60min (in a specific example, it is dried at 250°C for 45min. ), and then lifted and sieved by the elevator, put the semi-finished flux within the standard particle size range after sieving into a h...

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Abstract

The invention relates to sintered flux for nickel-based filament submerged-arc welding. Particularly, the sintered flux for nickel-based filament submerged-arc welding is prepared from dry powder withmultiple components and binder water glass. The components of the dry powder include, by weight parts, 48-68 parts of fluorite, for example, 48-60 parts; 18-38 parts of white corundum, for example, 18-25 parts or 18-21 parts; 15-25 parts of magnesia, for example, 15-21 parts; 5-10 parts of wollastonite, for example, 5-8 parts; and other components. The invention further relates to a preparation method for the sintered flux for nickel-based filament submerged-arc welding. The sintered flux for nickel-based filament submerged-arc welding has excellent performance, such as good corrosion resistance, good welding electroslag pool stability, good weld pass forming performance, good slag detachability, good tensile strength, good yield strength and good ductility.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a sintered flux for nickel-based filament submerged arc welding. The sintered flux is combined with nickel-based welding wire and is widely used in the welding of nickel-based alloys. Background technique [0002] With the development of modern industry, the requirements for materials are getting higher and higher. In order to meet various harsh conditions of use, the research and development of various new materials have received great attention, and the corresponding welding materials have also received corresponding attention. The product structure and varieties of welding materials have undergone great changes due to the development of the country, and new high-efficiency welding materials have made great progress and have been widely used. Among them, the most widely used new special welding materials are stainless steel welding materials and nickel-based alloys....

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B23K35/22B23K35/362
CPCB23K35/22B23K35/362
Inventor王学东崔晓东李伟王士山王磊朱海滨陈亮
OwnerBEIJING JINWEI WELDING MATERIAL