Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Powder cored wire for CrB-containing amorphous coating prepared by electric arc spraying

A technology of amorphous coating and powder core wire, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., to achieve the effect of uniform coating structure, good wear resistance and high hardness

Inactive Publication Date: 2008-10-22
BEIJING UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with plasma spraying and supersonic flame spraying, arc spraying has the characteristics of rapid heating, rapid cooling, in-situ large-area construction, good economy, and good coating performance. It is widely used in various industrial fields such as anti-corrosion and wear resistance. However, there is no patent report on the preparation of powder core wire for iron-based amorphous coatings by arc spraying at home and abroad.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Powder cored wire for CrB-containing amorphous coating prepared by electric arc spraying
  • Powder cored wire for CrB-containing amorphous coating prepared by electric arc spraying
  • Powder cored wire for CrB-containing amorphous coating prepared by electric arc spraying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A 304L stainless steel strip of 10×0.3mm (10mm in width and 0.3mm in thickness) is selected. Roll it into a U shape first. Get 600 grams of boron chromium powder, Cr 3 C 2 200 grams of powder, 100 grams of WC powder, and 100 grams of iron powder. The various powders taken were put into a powder mixer and mixed for 10 minutes, and then the mixed powder was added into a U-shaped 304L stainless steel belt groove, and the filling rate was 30%. Close the U-shaped groove so that the medicine powder is wrapped in it, and then gradually reduce the diameter through the wire drawing die to make the diameter reach 2.0mm. The arc spraying coating is prepared on the metal substrate roughened by sand blasting, the spraying current is 150-180A, the spraying voltage is 30-32V, the spraying air pressure is 0.55MP, and the spraying distance is 150mm. The hardness and relative wear resistance of the sprayed coating are shown in Table 1.

Embodiment 2

[0017] A 304L stainless steel strip of 10×0.3mm (10mm in width and 0.3mm in thickness) is selected. Roll it into a U shape first. Get boron chromium powder 650 grams, Cr 3 C 2 150 grams of powder, 100 grams of WC powder, and 100 grams of iron powder. The various powders taken were put into a powder mixer and mixed for 10 minutes, and then the mixed powder was added into a U-shaped 304L stainless steel belt groove, and the filling rate was 32%. Close the U-shaped groove so that the medicine powder is wrapped in it, and then gradually reduce the diameter through the wire drawing die to make the diameter reach 2.0mm. The arc spraying coating is prepared on the metal substrate roughened by sand blasting, the spraying current is 150-180A, the spraying voltage is 30-32V, the spraying air pressure is 0.6MP, and the spraying distance is 100mm. The hardness and relative wear resistance of the sprayed coating are shown in Table 1. The TEM photo of the coating and the selected area ...

Embodiment 3

[0019] A 304L stainless steel strip of 10×0.3mm (10mm in width and 0.3mm in thickness) is selected. Roll it into a U shape first. Get 700 grams of boron chromium powder, Cr 3 C 2 100 grams of powder, 50 grams of WC powder, and 150 grams of iron powder. The various powders taken were put into the powder mixer and mixed for 10 minutes, and then the mixed powder was added into the U-shaped 304L stainless steel belt groove, and the filling rate was 34%. Close the U-shaped groove so that the medicine powder is wrapped in it, and then gradually reduce the diameter through the wire drawing die to make the diameter reach 2.0mm. The arc spraying coating is prepared on the metal substrate roughened by sand blasting, the spraying current is 150-180A, the spraying voltage is 30-32V, the spraying air pressure is 0.55MP, and the spraying distance is 200mm. The hardness and relative wear resistance of the sprayed coating are shown in Table 1, and the X-ray diffraction pattern of the coat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electrical arc spraying method for preparing amorphous-coating dust core wire containing CrB belongs to hot spraying domain in material processing project and is mainly used in various industrial domains including anticorrosive domain and wearable domain. The amorphous alloy is association of high strength, hardness, tenacity, abradability and noncorrosibility, but there is no patent report about the electrical arc spraying method for preparing iron-base amorphous-coating dust core wire both at home and abroad. The invention is about an electrical arc spraying method for preparing amorphous-coating dust core wire containing CrB and is characterized in that the mass percentage content range of the said dust core components is as follows: 60-80 % boron- chromium, 5-20 % Cr3C2, 5-10 % WC and the residue is iron dust. The covering prepared with the invented dust core contains a good deal of amorphous carborundum, the coating formation is even and has high rigidity with HV0.1 of more than 1190, and has good abradability and the relative abradability is 15.8 times than the Q235 steel.

Description

technical field [0001] The invention relates to a powder core wire material for preparing CrB-containing amorphous coatings by arc spraying, belongs to the field of thermal spraying in material processing engineering, and is mainly used in various industrial fields such as anticorrosion and wear resistance. Background technique [0002] Failures caused by various wear and corrosion often occur on the surface of materials and their components. In order to prevent some parts working under conditions of high speed, high temperature, high pressure, heavy load, and corrosive media, the entire part will be scrapped due to local damage on the surface. , in order to improve the reliability of parts and prolong their service life, researchers have developed a large number of practical, advanced and efficient surface engineering technologies to repair or strengthen the surface of parts, and prepare a thin layer of surface function that is superior to the properties of the bulk material...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/04
Inventor 贺定勇蒋建敏傅斌友李晓延
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com