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Sintered flux for filament swinging submerged arc surfacing of continuous casting roller and preparation method for sintered flux

A technology of sintered flux and submerged arc surfacing, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of poor weld bead formation, difficulty in slag removal, and the inability of sintered flux to meet process requirements, and achieve easy and efficient slag removal. Excellent welding manufacturability and the effect of ensuring process stability

Active Publication Date: 2012-04-18
中机焊业科技(福建)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sintering flux used in common continuous casting roll surfacing cannot meet the process requirements, and there are problems such as poor weld bead formation and difficult slag removal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In terms of mass percentage, the following ingredients are first sieved through a 20-mesh sieve; according to 15% MgO, 28% AI 2 o 3 , 30% CaF 2 +CaO, 5% SiO 2 , 5% ZrO 2 , 3% Na 3 AIF 6 , 3% Cr 2 o 3 , 4% TiFe (the mass percent content of Ti is 20-23%, the balance is Fe), 4% CaCO 3 and 3% of 45 # Add the proportion of SiFe into the powder mixing tank and mix for 50 minutes to get the mixed powder; slowly add neutral potassium water glass to the prepared mixed powder to adjust the humidity evenly. Carry out granulation and baking; then carry out high-temperature sintering at 900°C, and after cooling to room temperature, obtain sintered flux for continuous casting roller filament swing submerged arc surfacing, wherein the sintered flux contains the neutral potassium water Glass is 15 wt%.

Embodiment 2

[0022] In terms of mass percentage, the following ingredients are first sieved through a 20-mesh sieve; according to 25% MgO, 30% AI 2 o 3 , 25% CaF 2 +CaO, 7% SiO 2 , 5% ZrO 2 , 2% Na 3 AIF 6 , 2% metal Mn, 2% Cr 2 o 3 and 2% of 45 # Add the proportion of SiFe into the powder mixing tank and mix for 50 minutes to get the mixed powder; slowly add neutral potassium water glass to the prepared mixed powder to adjust the humidity evenly. Carry out granulation and baking; then carry out high-temperature sintering at 850°C, and after cooling to room temperature, obtain sintered flux for continuous casting roller filament swing submerged arc surfacing, wherein the sintered flux contains the neutral potassium water Glass is 18 wt%.

Embodiment 3

[0024] In terms of mass percentage, the following ingredients are first sieved through a 20-mesh sieve; according to 18% MgO, 20% AI 2 o 3 , 35% CaF 2 +CaO, 10% SiO 2 , 5% ZrO 2 , 5% Na 3 AIF 6 , 3% metal Mn, 2% TiFe (the mass percent content of Ti is 20-23%, the balance is Fe) and 2% CaCO 3 Add the ratio of the mixed powder into the powder mixing tank and mix for 50 minutes to obtain the mixed powder; slowly add neutral potassium water glass to the prepared mixed powder to adjust the humidity evenly, and use a straight cylinder granulator at a low temperature of 200°C. Granulating and baking; then sintering at a high temperature of 950°C, and cooling to room temperature to obtain sintered flux for continuous casting roller wire swing submerged arc surfacing, wherein the sintered flux contains the neutral potassium water glass is 20wt%.

[0025] The obtained sintering flux for the oscillating submerged arc surfacing of the continuous casting roll wire can be used with n...

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Abstract

The invention relates to a sintered flux for filament swinging submerged arc surfacing of a continuous casting roller and a preparation method for the sintered flux. The preparation method comprises the following steps of: screening each ingredient by using a screen of 20 meshes; adding 15 to 25 percent of MgO, 20 to 30 percent of Al2O3, 25 to 35 percent of CaF2+CaO, 5 to 10 percent of SiO2, 5 percent of ZrO2, 2 to 5 percent of Na3AlF6, 0 to 3 percent of metallic Mn, 0 to 3 percent of Cr2O3, 0 to 4 percent of TiFe, 0 to 4 percent of CaCO3 and 0 to 3 percent of No. 45 SiFe into a powder mixing powder, and mixing; slowly adding neutral potash water glass into the prepared mixed powder, humidifying uniformly, granulating and roasting; and sintering at the temperature of between 800 and 950 DEG C, cooling, and thus obtaining the sintered flux. The sintered flux used for filament swinging submerged arc surfacing by matching a nitrogen alloyed 0Cr13Ni4MoN(414N) flux-cored wire can realize surfacing repair of the continuous casting roller.

Description

technical field [0001] The invention belongs to the field of welding material processing, and in particular relates to a sintered flux applicable to continuous casting roll filament swing submerged arc surfacing and a preparation method thereof. Background technique [0002] The continuous casting and surfacing technology has been developed for more than ten years in my country. According to the situation of general steel mills, the entire continuous casting roll is composed of three parts: support guide roll, fan section and horizontal section. The support and guide rollers are composed of close-packed rollers, so that the casting slab transitions to a circular arc through multi-point bending. After the billet is pulled out from the crystallizer, although a certain section is formed, the center is still in a liquid state. The thickness of the billet shell is generally 12-20mm, and the surface temperature of the billet is as high as 1200°C. Due to the effect of high temper...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K35/40
Inventor 杜荣臻张伟华
Owner 中机焊业科技(福建)有限公司
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