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Hot-setting backing welding flux and preparation method thereof

A technology of backing welding and thermal curing, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of low efficiency, difficult processing and high cost of submerged arc welding, and achieve less defects, good welding seam formation, and welding seam. high quality effects

Active Publication Date: 2013-08-21
江苏金虞自动化工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low submerged arc welding efficiency, high cost and difficult processing in the splicing and manufacturing of flat steel plates in the prior art, the present invention provides a heat-curing pad flux and a preparation method thereof

Method used

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  • Hot-setting backing welding flux and preparation method thereof

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Embodiment 1

[0030] Using the method of the present invention, 5 kg of heat-cured flux was prepared in this embodiment. The components of the flux and the mass percentages of each component are: alumina (industrial grade α-type alumina calcined at 1450°C, particle size: 80- 100 mesh) 18%, magnesia (Mg content is 90%, after electric melting treatment, the mass percentage of sulfur and phosphorus content is less than 0.04%, particle size is 80-90 mesh) 22%, natural wollastonite (SiO 2 : 42%, CaO: 47%, the mass percentage of sulfur and phosphorus content is less than 0.04%, particle size: 80-90 mesh) 5%, fluorite (CaF 2 : 96%, the mass percentage of sulfur and phosphorus content is less than 0.03%, particle size: 80-90 mesh) 9%, silica mud (SiO 2 : 98%, the mass percentage of sulfur and phosphorus content is less than 0.03%, particle size: 200-230 mesh) 2%, zircon sand (ZrO 2 : 60%, SiO 2 : 32%, the mass percentage of sulfur is less than 0.03%, the mass percentage of phosphorus content is l...

Embodiment 2

[0046] Using the method of the present invention, 5 kg of heat-cured flux was prepared in this embodiment. The components of the flux and the mass percentages of each component are: alumina (industrial grade α-type alumina calcined at 1450°C, particle size: 80- 100 mesh) 18%, magnesia (Mg content is 95%, after electric melting treatment, the mass percentage of sulfur and phosphorus content is less than 0.04%, particle size is 90-100 mesh) 22%, natural wollastonite (SiO 2 : 45%, CaO: 50%, the mass percentage of sulfur and phosphorus content is less than 0.04%, particle size: 90-100 mesh) 5%, fluorite (CaF2: 98%, the mass percentage of sulfur and phosphorus content is less than 0.03% , particle size: 90-100 mesh) 9%, silica mud (SiO 2 : 90%, the mass percentage of sulfur and phosphorus content is less than 0.03%, particle size: 200-230 mesh) 2%, zircon sand (ZrO 2 : 70%, SiO 2 : ≤25%, the mass percentage of sulfur is less than 0.03%, the mass percentage of phosphorus content i...

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Abstract

The invention discloses a hot-setting backing welding flux and a preparation method thereof, and belongs to the field of welding materials for union melt welding. The flux comprises the following components by mass percentage: 18% of aluminum oxide, 22% of magnesite, 5% of natural wollastonite, 9% of fluorite, 2% of silicon mud, 3% of zircon sand, 30% of reduced iron powder, 2% rutile, 3% of ferromanganese, 3% of silicon iron and 3% of ferro-aluminium. The welding flux is spread on the surface of a copper plate uniformly before welding; when the front is welded, the back of a root molten pool and the welding flux conduct partial metallurgical reaction, and the welding flux is heated and solidified to become a backing to assist in back welded joint forming simultaneously; the welding flux takes MgO, CaO, SiO2, TiO2, CaF2 and Al2O3 as basic slagging substances; and the welded joint quality is good. According to the preparation method, a hot-setting agent is added by a special fabrication mode, so that the welding flux forms solid blocks at 200-300 DEG C, no air hole is formed in the welded joint, and the welded joint quality is high.

Description

technical field [0001] The invention belongs to the field of welding materials for submerged arc automatic welding, in particular, it relates to a flux, and more specifically, it relates to a back bead thermosetting liner used in the double-sided forming process of submerged arc automatic single-sided welding Auxiliary shaping sintering flux and preparation method thereof. Background technique [0002] Submerged arc automatic welding is an efficient welding method, which is widely used in the splicing and manufacturing of flat steel plates. The traditional welding process uses the front side welding first, then turns the steel plate over and uses carbon arc gouging to clean the root of the weld seam, and then carries out the reverse side forming welding process, but this welding process has the defects of low efficiency and consuming a lot of man-hours. With the enlargement of the processed steel plate, its turning is more and more restricted by the workshop space, which ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 李晓泉闫业良
Owner 江苏金虞自动化工程有限公司
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