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Nickle-base corrosion-resisting electric-arc spraying powdered core-wire material

An arc spraying and powder core wire technology, which is applied in coating, melt spraying, metal material coating process and other directions, can solve the ion pitting corrosion of equipment and pipeline salt solution, nickel-based arc spraying powder core wire is not seen Issues such as patents and literature reports

Inactive Publication Date: 2006-05-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is: the developed nickel-based arc spraying powder core wire not only solves the surface protection problem of petrochemical equipment under high temperature erosion and high temperature corrosion conditions, but also solves the ion point corrosion of equipment and pipeline salt solution The problem
[0005] The nickel-based arc spraying powder core wire material developed by the present invention has not yet seen relevant patents and literature reports at home and abroad

Method used

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  • Nickle-base corrosion-resisting electric-arc spraying powdered core-wire material
  • Nickle-base corrosion-resisting electric-arc spraying powdered core-wire material
  • Nickle-base corrosion-resisting electric-arc spraying powdered core-wire material

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Embodiment Construction

[0017] All the sprayed wires of the embodiments are made by the "FCWM50 passive drawing type flux-cored welding wire machine" manufactured by Kunming Heavy Machinery Factory:

[0018] 1. Select 10×0.4 (width 10mm, thickness 0.4mm) nickel-chromium strip (Ni80+Cr20). Roll it into a U shape first. Get 0.025 kg of metallic nickel powder, 0.14 kg of metallic chromium powder, and 0.335 kg of chromium-boron powder. (The particle size of the powder taken is that it can pass through a 40-mesh sieve). Put the various powders taken into the powder mixer and mix them for 10 minutes, then add the mixed powders into the U-shaped nickel-chromium belt groove, and the filling rate is 25%. Close the U-shaped groove so that the powder is wrapped in it. Then make it pass through the drawing dies with diameters of: 3.0mm, 2.8mm, 2.6mm, 2.5mm, 2.4mm, 2.3mm, 2.2mm, 2.1mm, 2.0mm, 1.9mm, 1.8mm, 1.7mm, 1.6mm, Drawing and reducing the diameter step by step, and finally make the diameter reach 1.6mm....

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Abstract

The invention relates to surface protection of components used in petrochemical equipment. The feature of nickel base arc spraying powder core wire material that is made up from 56-74% metal nickel, 21-40% metal chrome, 5-9% molybdenum, 2-6% boron, and 2-4% aluminum. The invention solves the surface protection problem existing in petrochemical equipment under the condition of high temperature erosion, high temperature corrosion. Moreover, it solves the problem of salt solution ion drop corrosion on device and pipeline.

Description

technical field [0001] The invention relates to a corrosion-resistant and anti-corrosion arc-sprayed powder core wire material for the surface of metal materials, which belongs to the field of surface engineering in material processing engineering. The invention is mainly applied to the surface protection of petrochemical equipment and parts. Background technique [0002] The corrosion damage of petroleum and chemical equipment parts is becoming more and more serious. Various chemical equipment and pipelines are often in contact with acid, alkali, and salt solutions, and are subject to strong corrosion. It will perforate, and even cause serious accidents such as burning and explosion. How to prevent corrosion and reduce the occurrence of catastrophic accidents is a subject that countries all over the world are studying. Using thermal spraying technology, a layer of corrosion-resistant metal or cermet coating is applied on the surface of equipment and pipelines, which can ef...

Claims

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Application Information

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IPC IPC(8): C23C4/06C23C4/131C23C24/08
Inventor 贺定勇蒋建敏董娜栗卓新
Owner BEIJING UNIV OF TECH
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