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Inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3

A nickel-based electrode, low-hydrogen type technology, applied in the field of electrode, nickel-based electrode ENiCrMo-3, can solve the problems of poor high-current resistance of the coating, high hydrogen content in the weld seam, and incomplete slag coverage, etc., to achieve Complete slag coverage, reasonable alloy ratio, and good high-current resistance

Active Publication Date: 2017-07-28
BEIJING JINWEI WELDING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrodes of this formula system generally have problems such as poor arc stability, incomplete slag coverage, sticky slag, poor weld formation, poor high-current resistance of the coating, and high content of diffusible hydrogen in the weld.

Method used

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  • Inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3
  • Inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3
  • Inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1: Preparation of a nickel-based electrode ENiCrMo-3 with an inversely proportional alkaline low-hydrogen coating

[0067] (a) In parts by weight, take 15 parts of marble, 30 parts of fluorite, 5 parts of cryolite, 10 parts of quartz, 1 part of titanium dioxide, 15 parts of rutile, 2 parts of mica, 6 parts of potassium titanate, and 5 parts of feldspar 0.5 parts of sodium alginate, 0.5 parts of soda ash, 2 parts of ferrosilicon, 1 part of ferro-titanium, 6 parts of electrolytic manganese; 8 parts of ferroniobium, 10 parts of metal chromium, and mix the powder evenly;

[0068] (b) For every 100 parts by weight of the mixed powder in step (a), take 20 parts by weight of potassium sodium water glass and add it to the dry powder and mix evenly, apply it on the Φ4.0mm welding core with a hydraulic press, and put the electrode through 12 hours of low temperature After drying in the air, it is dried at a high temperature to obtain a nickel-based electrode ENiCrMo-3 w...

Embodiment 2

[0070] Example 2: Preparation of a nickel-based electrode ENiCrMo-3 with an inversely proportional alkaline low-hydrogen coating

[0071] (a) In parts by weight, 30 parts of marble, 30 parts of fluorite, 20 parts of cryolite, 2 parts of quartz, 8 parts of titanium dioxide, 2 parts of rutile, 8 parts of mica, 2 parts of potassium titanate, and 15 parts of feldspar 3 parts of sodium alginate, 1.5 parts of soda ash, 6 parts of ferrosilicon, 5 parts of ferro-titanium, 18 parts of electrolytic manganese; 2 parts of ferroniobium, 2 parts of metal chromium, the powder is mixed evenly;

[0072] (b) For every 100 parts by weight of the mixed powder in step (a), take 25 parts by weight of potassium sodium water glass and add it to the dry powder and mix evenly, apply it on the Φ2.5mm welding core with a hydraulic press, and put the electrode through 12 hours of low temperature After drying in the air, it is dried at a high temperature to obtain a nickel-based electrode ENiCrMo-3 with ...

Embodiment 3

[0074] Example 3: Preparation of a nickel-based electrode ENiCrMo-3 with an inversely proportional alkaline low-hydrogen coating

[0075] (a) In parts by weight, take 15 parts of marble, 5 parts of fluorite, 20 parts of cryolite, 10 parts of quartz, 5 parts of titanium dioxide, 10 parts of rutile, 8 parts of mica, 6 parts of potassium titanate, and 10 parts of feldspar 2 parts of sodium alginate, 1 part of soda ash, 4 parts of ferrosilicon, 3 parts of ferro-titanium, 9 parts of electrolytic manganese; 5 parts of ferroniobium, 5 parts of metal chromium, the powder is mixed evenly;

[0076] (b) For every 100 parts by weight of the mixed powder in step (a), take 23 parts by weight of potassium sodium water glass and add it to the dry powder and mix evenly, apply it on the Φ3.2mm welding core with a hydraulic press, and put the electrode through 12 hours of low temperature After drying in the air, it is dried at a high temperature to obtain a nickel-based electrode ENiCrMo-3 wit...

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Abstract

The invention relates to an inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3 and a preparation method of the inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3. Specifically, the inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3 is prepared in the manner that powder materials of following ingredients are evenly mixed, potassium sodium water glass accounting for 20%-25% of the total weight of the mixed powder materials is then added, evenly stirring is conducted, a nickel-based alloy welding core is coated with the mixture in a pressing manner, and then the inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3 is obtained through drying; and the ingredients of the inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3 comprise 15-30 parts of marble, 5-30 parts of fluorite, 5-20 parts of cryolite, quartz, titanium dioxide, rutile, mica, potassium titanate, feldspar, sodium alginate, sodium carbonate, silicon iron, ferrotitanium, electrolytic manganese, ferroniobium and chromium metal. According to the provided nickel-based alloy welding core, the number of the parts, by weight, of fluorides is over one time that of the marble. During welding, the inversely-proportional alkaline low-hydrogen type coating nickel-based welding rod ENiCrMo-3 is flexible and stable in electric arc blow force, less in splashing and good in deslagging effect, complete molten slag coverage is achieved, a formed weld joint is smooth, and the large-current resistance of the coating is good.

Description

technical field [0001] The invention belongs to the field of welding materials, and relates to an electrode, in particular to a nickel-based electrode ENiCrMo-3 with an inverse proportion alkaline low-hydrogen coating. Background technique [0002] Nickel-based corrosion-resistant alloys are important corrosion-resistant metal materials. In many industrial fields such as chemical industry, petrochemical industry, hydrometallurgy, power, nuclear fuel and nuclear energy, nickel-based corrosion-resistant alloys are often widely used as important structural materials in many harsh corrosive environments. Since the early 1960s, my country has started a lot of research and used nickel-based corrosion-resistant alloys in engineering, and has made great progress. Among them, nickel-chromium alloys containing more than 10% chromium show strong corrosion resistance and oxidation resistance, so be widely used. [0003] The GB / T13814-92 "Nickel and Nickel Alloy Electrodes" standard is ...

Claims

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Application Information

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IPC IPC(8): B23K35/365B23K35/30
CPCB23K35/0261B23K35/3033B23K35/3602B23K35/3605B23K35/365
Inventor 王士山崔晓东王学东李伟陈波徐维英王立志陈亮张晗
Owner BEIJING JINWEI WELDING MATERIAL
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