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High-alkalinity band electrode electroslag surfacing flux

A high-basicity, band-polarized technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of high price and general application effect, and achieve high production efficiency and small machining allowance after welding. , the effect of low comprehensive cost

Active Publication Date: 2015-02-18
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the foreign technology is relatively mature, but the price is expensive. Some domestic manufacturers have launched this product, but the application effect is average.

Method used

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  • High-alkalinity band electrode electroslag surfacing flux
  • High-alkalinity band electrode electroslag surfacing flux
  • High-alkalinity band electrode electroslag surfacing flux

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) A high-alkalinity strip electroslag surfacing flux, the formula of the flux is 76% of fluorite, 3% of coarse magnesia, 1% of fine magnesia, 2% of fused magnesia, 2% of silica mud, Bauxite 4%, calcined α-alumina 1%, wollastonite 8%, barium fluoride 2%, metal chromium 1%. CaF in fluorite 2 Content ≥ 92%, MgO in coarse magnesia ≥ 88%, MgO in fine magnesia ≥ 88%, MgO in fused magnesia ≥ 97%, SiO in silica mud 2 ≥97%, Al in bauxite 2 o 3 ≥75%, CaO≥38% and SiO in wollastonite 2 ≥42%.

[0032] (2) Chemical composition of stainless steel welding strip:

[0033]

[0034] (3) Chemical composition of transition layer welding strip JQ.EQ309L:

[0035]

[0036] (4) Regulations on the use of welding strips when inspecting the chemical composition of various types of surfacing metals:

[0037] Corrosion Hardfacing Metal Models

Transition layer surfacing welding strip model

Corrosion-resistant surfacing welding strip model

F×308L-E

JQ.EQ309L...

Embodiment 2

[0050] (1) A high-alkalinity strip electroslag surfacing flux, the formula of the flux is 77% of fluorite, 2% of coarse magnesia, 2% of fine magnesia, 1% of fused magnesia, 3% of silica mud, Bauxite 1%, calcined α-alumina 3%, wollastonite 8%, barium fluoride 2%, metal chromium 1%. CaF in fluorite 2 Content ≥ 92%, MgO in coarse magnesia ≥ 88%, MgO in fine magnesia ≥ 88%, MgO in fused magnesia ≥ 97%, SiO in silica mud 2 ≥97%, Al in bauxite 2 o 3 ≥75%, CaO≥38% and SiO in wollastonite 2 ≥42%.

[0051] (2) Chemical composition of stainless steel welding strip:

[0052]

[0053](3) Chemical composition of transition layer welding strip JQ.EQ309L:

[0054]

[0055] (4) Regulations on the use of welding strips when inspecting the chemical composition of various types of surfacing metals:

[0056] Corrosion Hardfacing Metal Models

[0057] (5) Chemical composition of surfacing metal:

[0058]

[0059] (6) Percentage of surfacing metal ferrite:

[0060]

...

Embodiment 3

[0070] (1) A high-alkalinity strip electroslag surfacing flux, the formula of the flux is 76.5% of fluorite, 2.5% of coarse magnesia, 1.5% of fine magnesia, 1% of fused magnesia, 2% of silica mud, Bauxite 2%, calcined α-alumina 2%, wollastonite 9%, barium fluoride 2%, metal chromium 1.5%. CaF in fluorite 2 Content ≥ 92%, MgO in coarse magnesia ≥ 88%, MgO in fine magnesia ≥ 88%, MgO in fused magnesia ≥ 97%, SiO in silica mud 2 ≥97%, Al in bauxite 2 o 3 ≥75%, CaO≥38% and SiO in wollastonite 2 ≥42%.

[0071] (2) Chemical composition of stainless steel welding strip:

[0072]

[0073] (3) Chemical composition of transition layer welding strip JQ.EQ309L:

[0074]

[0075] (4) Regulations on the use of welding strips when inspecting the chemical composition of various types of surfacing metals:

[0076] Corrosion Hardfacing Metal Models

Transition layer surfacing welding strip model

Corrosion-resistant surfacing welding strip model

F×308L-E

J...

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Abstract

The invention discloses a high-alkalinity band electrode electroslag surfacing flux which is characterized by comprising the following compositions, by weight, of 76-78% of fluorite, 2-5% of coarse magnesia, 1-3% of fine magnesia, 1-2% of fused magnesia, 2-4% of silicon mud, 1-4% of bauxite, 1-3% of burning alpha-type aluminum oxide, 8-14% of wollastonite, 2-6% of barium fluoride and 1-4% of chromium metal. A sum of the percentage by weight of the compositions is 100%. The flux has the advantages of being prone to remove slag, smooth and attractive in welding path and small in working allowance after welding, guaranteeing welding quality, being high in alkalinity and capable of reducing burning loss of alloying elements in a welding process, improving the alkalinity of the flux, being capable of reducing burning loss of alloying elements and guaranteeing high-temperature resistance and corrosion resistance of the welding path.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a high-alkalinity strip electroslag surfacing flux. Background technique [0002] As an important surfacing technology, electroslag surfacing technology is applied to surfacing welding on the inner surface of high temperature resistant and corrosion resistant containers, and plays a pivotal role in modern industrial production. Flux is the main consumable material in the surfacing process, and its welding process performance and chemical metallurgical performance are the main factors that determine the welding quality. Overlay welding technology has been widely used in the industrial field, especially in pressure equipment, and it is more and more widely used in hydrogenation reactors, nuclear island reactors, raw flow synthesis towers, coal liquefaction reactors, and urea synthesis equipment. Strip surfacing has the advantages of high welding efficiency, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
Inventor 陈洋田国锋
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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