Cored wire for preparing iron-based coating as well as preparation method and application thereof

A powder core wire material and coating technology, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., to achieve the effects of prolonging service life, good economy, improving hardness and relative wear resistance

Inactive Publication Date: 2013-05-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After retrieval, there is currently no preparation of SiO containing ceramic phase by arc spraying. 2 Patent reports on related technologies of iron-based amorphous / nanocrystalline coatings

Method used

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  • Cored wire for preparing iron-based coating as well as preparation method and application thereof
  • Cored wire for preparing iron-based coating as well as preparation method and application thereof
  • Cored wire for preparing iron-based coating as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0033]According to the atomic percentage of powder core wire material drug core composition: Cr: 15at.%; B: 5at.%; Si: 5at.%; C: 2.5at.%; Fe: balance. Filling rate: 33%, rolled powder core wire. Spraying parameters used for coating preparation: voltage 28-30V; current 160-180A; spraying distance 190mm; compressed air pressure 0.4-0.5MPa.

Embodiment 2

[0035] According to the atomic percentage of powder core wire material drug core composition: Cr: 15at.%; B: 5at.%; Si: 5at.%; C: 2.5at.%; Fe: balance. Filling rate: 33%, rolled powder core wire. Spraying parameters used for coating preparation: voltage 30-32V; current 180-200A; spraying distance 210mm; compressed air pressure 0.4-0.5MPa.

Embodiment 3

[0037] According to the atomic percentage of powder core wire material drug core composition: Cr: 15at.%; B: 5at.%; Si: 5at.%; C: 2.5at.%; Fe: balance. Filling rate: 33%, rolled powder core wire. Spraying parameters used for coating preparation: voltage 32-34V; current 200-220A; spraying distance 200mm; compressed air pressure 0.4-0.5MPa.

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Abstract

The invention provides a cored wire for preparing an iron-based coating as well as a preparation method and application thereof and belongs to the field of thermal spraying in material processing engineering. The flux composition comprises 15-35 at.% of Cr, 5-25 at.% of B, 5-25 at.% of Si, 2.5 to 5.5 at.% of C and the balance of Fe; a strip material for a sheath of the cored wire is a stainless steel band; and the filling rate of the cored wire is 33%. When electric-arc spraying is used for preparing an iron-based amorphous / nanocrystal coating containing ceramic phase SiO2, firstly a matrix is pretreated, and according to a spraying technology, the voltage is 28-34V, the electric current is 160-220A, the spraying distance is 190-210mm, and the compressed air pressure is 0.4-0.6Mpa. The coating can be widely applied to repair and protection of equipment parts in industries such as metallurgy, electricity and petroleum. The coating with the advantages of corrosion resistance, high hardness and high wearing resistance is obtained according to the preparation method.

Description

technical field [0001] The invention belongs to the field of thermal spraying in material processing engineering, relates to a preparation method and application of a powder core wire material and a coating, in particular to a method for preparing ceramic-containing SiO by an arc spraying method 2 The powder core wire material of the iron-based amorphous / nanocrystalline coating, the preparation method and application of the coating, the invention is mainly used in industrial fields such as corrosion resistance and wear resistance. Background technique [0002] Corrosion and wear are the main forms of material failure and mostly occur on the surface of materials. In more and more actual working conditions, they often coexist and interact with each other, causing huge losses to the national economy. Surface engineering technology is an effective way to improve the surface properties of materials and prolong the service life of materials, and thermal spraying technology is one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/12C23C4/131
Inventor 蒋建敏周正王佳音贺定勇王智慧崔丽李晓延
Owner BEIJING UNIV OF TECH
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