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Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same

A technology of sintered flux and strip surfacing, which is applied in welding equipment, welding/welding/cutting items, welding media, etc., can solve problems such as incomplete penetration, unstable welding electroslag process, and poor forming, and achieve surfacing The effect of increased efficiency, good welding process performance and mechanical properties

Inactive Publication Date: 2017-03-22
ATLANTIC CHINA WELDING CONSUMABLES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The maximum surfacing speed allowed by different fluxes is different. The general electroslag surfacing speed is 15-22cm / min. If it exceeds this speed, a sufficient amount of slag cannot be produced, and the surfacing pool will fall on the Advance to the back of the welding strip, and the welding electroslag process is unstable, the welding pool will lose its due protection, and it is easy to produce many welding defects such as undercut, incomplete penetration, and poor forming

Method used

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  • Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same
  • Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same
  • Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] SiO 2 8.5kg, MgO 0.5kg, Al 2 o 3 16kg, CaF 2 68kg, CaO 2kg and MnO 2kg powder are placed in a mixer and stirred evenly, then 18kg of sodium water glass is added to mix and granulate, and then baked at a low temperature of 150°C, sintered at a high temperature of 750°C, and sieved to obtain sintered Flux products.

Embodiment 2

[0043] SiO 2 7kg, MgO 1kg, Al 2 o 3 17kg, CaF 2 69kg, CaO 2kg and MnO 1kg of industrial pure powder are placed in a mixer and stirred evenly, then 16kg of sodium water glass is added to mix and granulate, then baked at a low temperature of 150°C, sintered at a high temperature of 750°C, and sieved. A sintered flux product is obtained.

Embodiment 3

[0045] SiO 2 6kg, MgO 0.5kg, Al 2 o 3 18kg, CaF 2 70kg, CaO 2kg and MnO 0.5kg of industrial pure powder are placed in a mixer and stirred evenly, then 17kg of sodium water glass is added to mix and granulate, and then baked at a low temperature of 150°C, sintered at a high temperature of 750°C, and sieved That is, a sintered flux product is obtained.

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Abstract

The invention discloses a sintering flux used for stainless steel high-speed electro-slag strip surfacing and a preparation method for the same. The sintering flux is made of 6-10 parts by weight of SiO2, 0.5-1 part by weight of MgO, 16-20 parts by weight of Al2O3, 65-85 parts by weight of CaF2, 2-4 parts by weight of CaO and 0.5-2 parts by weight of MnO. The preparation method comprises the steps that all the constituent power materials of the sintering flux are mixed according to proportion ratios, so a first mixed materials is obtained; a binder which occupies 15-20% of the weight of the first mixed material is added, and the mixture is mixed, stirred and pelleted, so that a second mixed material is obtained; and the second mixed material is successively processed by low-temperature baking of 100-200 DEG C and high-temperature sintering of 600-800 DEG C, so the sintering flux can be obtained after screening. The sintering flux disclosed by the invention has the advantages that surfacing efficiency is twice the surfacing efficiency of common electro-slag strip surfacing during the same period, and the sintering flux has god welding technological performance and mechanical properties.

Description

technical field [0001] The invention belongs to the field of welding technology, and more specifically relates to a sintered flux for stainless steel high-speed strip electrode electroslag surfacing welding that can be widely used in petrochemical, coal chemical, boiler, nuclear power and other equipment surfaces for corrosion-resistant surfacing welding and its preparation method. Background technique [0002] As the country intensifies the development of petrochemical and nuclear power, stainless steel strip electroslag surfacing is more and more widely used in the manufacture of petrochemical, coal chemical, boiler, nuclear power and other equipment in my country. Compared with other methods, strip surfacing has the advantages of high deposition efficiency, shallow molten pool, stable chemical composition and metallographic structure of deposited metal, and wide and flat weld bead. [0003] After more than ten years of rapid development in the domestic equipment manufact...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K25/00B23K101/16
CPCB23K35/362B23K25/005B23K35/3605B23K2101/16
Inventor 彭祺珉杨飞张晓柏蒋勇罗永飞银润邦
Owner ATLANTIC CHINA WELDING CONSUMABLES
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