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Nickel-based electrode enicrmo-3 with inverse proportional alkaline and low-hydrogen coating

A nickel-based electrode, low hydrogen technology, applied in welding equipment, welding medium, welding/cutting medium/material, etc. Complete and other problems, to achieve the effect of complete slag coverage, reasonable alloy ratio, and good high current resistance performance

Active Publication Date: 2019-04-05
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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  • Nickel-based electrode enicrmo-3 with inverse proportional alkaline and low-hydrogen coating
  • Nickel-based electrode enicrmo-3 with inverse proportional alkaline and low-hydrogen coating
  • Nickel-based electrode enicrmo-3 with inverse proportional alkaline and low-hydrogen coating

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 and 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 Parts, 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 metallic chromium, and the powder is mixed evenly;

[0068] (b) For every 100 parts by weight of the mixed powder of step (a), take 20 parts by weight of potassium sodium water glass and add it to the dry powder and mix evenly. Use a hydraulic press to apply pressure to the Φ4.0mm welding core. After drying and drying at high temperature, a nickel-based electrode ENiCrMo-3 with an inverse ratio of alkaline and low hydrogen coating is ...

Embodiment 2

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

[0071] (a) In parts by weight, take 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, 15 parts of feldspar Parts, 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 ferro-niobium, 2 parts of metallic chromium, and the powder is evenly mixed;

[0072] (b) For every 100 parts by weight of the mixed powder of step (a), take 25 parts by weight of potassium sodium water glass and add it to the dry powder and mix it evenly. Use a hydraulic press to apply pressure to the Φ2.5mm welding core. After drying and drying at high temperature, a nickel-based electrode ENiCrMo-3 with an inverse ratio of alkaline and low hydrogen coating is obtained. ...

Embodiment 3

[0074] Example 3: Preparation of a nickel-based electrode ENiCrMo-3 with an inversely proportional alkaline and 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, 10 parts of feldspar Parts, 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 ferro-niobium, 5 parts of metallic chromium, and the powder is evenly mixed;

[0076] (b) For every 100 parts by weight of the mixed powder of step (a), take 23 parts by weight of potassium sodium water glass and add it to the dry powder and mix evenly. Use a hydraulic press to apply pressure to the Φ3.2mm welding core. After drying and drying at high temperature, a nickel-based electrode ENiCrMo-3 with an inverse ratio of alkaline and low hydrogen coating is obtain...

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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 alkaline low-hydrogen coating. Background technique [0002] Nickel-based corrosion-resistant alloys are important corrosion-resistant metal materials. In industrial fields such as chemical industry, petrochemical industry, hydrometallurgy, power, nuclear fuel and nuclear energy, in many harsh corrosive environments, nickel-based corrosion-resistant alloys are often widely used as important structural materials. Since the early 1960s, my country has begun to research and use nickel-based corrosion-resistant alloys in engineering, and has made great progress. Among them, nickel-chromium alloys with more than 10% chromium show strong corrosion resistance and oxidation resistance. It is widely used. [0003] The standard of GB / T13814-92 "Nickel and Nickel Alloy Electrodes" is equivalent to the American ANSI / AW...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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