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Welding rod for welding 1Ni9 steel and preparation method thereof

A welding rod and core technology, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of high price and poor process performance, and achieve low cost, detailed and beautiful welding seam, and stable arc performance. good effect

Inactive Publication Date: 2013-12-11
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a welding rod for welding 1Ni9 steel, which solves the problem that the existing welding rod for welding 1Ni9 steel is expensive and has poor process performance when imported from abroad

Method used

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  • Welding rod for welding 1Ni9 steel and preparation method thereof
  • Welding rod for welding 1Ni9 steel and preparation method thereof
  • Welding rod for welding 1Ni9 steel and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0028] The misch is a mixture of 20% yttrium oxide, 20% cerium oxide and 60% lanthanum oxide. The preparation method of above-mentioned welding rod, comprises the following steps:

[0029] step 1,

[0030] Weigh the following components by mass percentage: 34%-48% carbonate (one or two of dolomite and marble), 17%-24% fluorite, 2%-6% zircon Sand, 1%-4% ferrosilicon, 5%-12% ferrotitanium, 3%-5% medium carbon ferromanganese, 2%-5% titanium dioxide, 2%-5% rutile, 2% -6% mica, 0.7%-1% alkali, 1%-3% mixed rare earth (a mixture of 20% yttrium oxide, 20% cerium oxide and 60% lanthanum oxide), 2%-6% Manganese metal, 1%-3% ferroniobium, the sum of the mass percentages of the above components is 100%;

[0031] The above-mentioned component materials weighed together with the potassium-sodium mixed water glass with a modulus of 2.8 were put into a mixer and mixed for 15 minutes, and then the mixed medicinal powder was put into a compactor and pressed into a cylindrical pill; The addi...

Embodiment 1

[0059] Weigh 440g (44%) of marble, 220g (22%) of fluorite, 40g (4%) of zircon sand, 20g (2%) of ferrosilicon, and 60g (6%) of ferrosilicon according to mass percentage , 40g (4%) of medium carbon ferromanganese, 40g (4%) of titanium dioxide, 50g (5%) of rutile, 30g (3%) of mica, 10g (1%) of alkali, 20g (2%) Mixed rare earth (20% yttrium oxide, 20% cerium oxide and 60% lanthanum oxide mixture), 20g (2%) of manganese metal, 10g (1%) of ferroniobium; the above powder material and the above The potassium-sodium mixed water glass of medicated powder material 310g (31%) is put into mixer together and mixed for 15 minutes, then the mixed medicated powder is put into a compactor and pressed into a cylindrical drug mass;

[0060] Add the cylindrical drug ball prepared in the previous stage into the electrode press coating machine, and press the drug ball on the ERNiCrMo-3 welding core, put the prepared electrode into the box furnace at a low temperature of 60 ° C × 10 h, and then High...

Embodiment 2

[0068] Weigh 150g (15%) of marble, 250g (25%) of dolomite, 180g (18%) of fluorite, 40g (4%) of zircon sand, and 20g (2%) of ferrosilicon according to mass percentage , 80g (8%) of titanium ferromanganese, 40g (4%) of medium carbon ferromanganese, 50g (5%) of titanium dioxide, 50g (5%) of rutile, 50g (5%) of mica, 10g (1% ), 30g (3%) of mixed rare earths (a mixture of 20% yttrium oxide, 20% cerium oxide and 60% lanthanum oxide), 30g (3%) of manganese metal, 20g (2%) of Ferroniobium; the above-mentioned medicinal powder material and the potassium-sodium mixed water glass of the above-mentioned medicinal powder material 300g (30%) are put into a mixer and mixed for 15 minutes, and then the mixed medicinal powder is put into a compactor and pressed into a cylindrical medicinal powder group;

[0069] Add the cylindrical drug ball prepared in the previous stage into the electrode press coating machine, and press the drug ball on the ERNiCrMo-3 welding core, put the prepared electro...

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Abstract

The invention discloses a welding rod for welding 1Ni9 steel. The welding rod comprises a coat and a core, wherein the coat is prepared from the following components in percentage by mass: 34-48 percent of carbonate, 17-24 percent of fluorite, 2-6 percent of zircon sand, 1-4 percent of ferrosilicon, 5-12 percent of ferrotitanium, 3-5 percent of mid-carbon ferromanganese, 2-5 percent of titanium pigment, 2-5 percent of rutile, 2-6 percent of mica, 0.7-1 percent of alkali, 1-3 percent of misch metal, 2-6 percent of manganese metal and 1-3 percent of ferroniobium, wherein the sum of the mass percentages of all the components is 100 percent. The preparation method comprises the following steps: placing each component material and an adhesive in a mixer to mix and briquetting into briquettes in a briquetting machine; coating the briquettes on the alloy ERNiCrMo-3 core in a welding rod extrusion press; placing in a box type furnace to gradually heat and dry to prepare the welding rod. According to the welding rod and the preparation method thereof, the problems of high price of imports from abroad and poorer technological performance of a conventional welding rod for welding the 1Ni9 steel are solved, the raw materials are easy to get, and the performance of weldjoints is good.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to an electrode used for welding 1Ni9 steel, and also relates to a preparation method of the electrode. Background technique [0002] With the rapid development of the fan industry, a large number of high-quality impellers are required to develop fans under low-temperature, high-temperature, and corrosive conditions. Now, fan impellers are usually connected to the disc and blades by welding. The welding quality of the impeller affects the service life of the fan. one of the key issues. Compared with excellent stainless steel and aluminum alloy for low temperature, 1Ni9 steel not only has the advantages of less alloy content, cheap price, large allowable stress, and small thermal expansion rate at -196°C, but also has excellent strength, toughness and weldability, and is widely used It is used in fan industry and other fields. In order to ensure the welding quality of t...

Claims

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Application Information

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IPC IPC(8): B23K35/365B23K35/40
Inventor 张敏张兴璇李继红
Owner XIAN UNIV OF TECH
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