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Wearable iron-based TiC-ceramic-containing powder cored wire for electric arc spraying

A kind of arc spraying, powder core wire technology, applied in the direction of coating, fusion spraying, metal material coating technology, etc. effect of the problem

Inactive Publication Date: 2008-10-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to develop an iron-based TiC-containing ceramic arc spray powder core wire material to solve the surface protection problems of electrical equipment and mechanical equipment under the conditions of wear and high temperature erosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A stainless steel strip (304) of 10×0.4 (10 mm in width and 0.4 mm in thickness) is selected. Roll it into a U shape first. Get 0.200 kilogram of ferroboron powder, 0.040 kilogram of metallic nickel powder, 0.045 kilogram of metallic chromium powder, 0.015 kilogram of metallic titanium powder, 0.100 kilogram of iron powder (the particle size of powder is to pass through 40 mesh sieves), 0.100 kilogram of titanium carbide ceramic powder, particle size is 60 mesh. The various powders taken are put into the powder mixer and mixed for 10 minutes, and then the mixed powder is added into a U-shaped stainless steel 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. Spray metal coa...

Embodiment 2

[0021] A stainless steel strip (304) of 10×0.3 (10 mm in width and 0.3 mm in thickness) is selected. Roll it into a U shape first. Get 0.175 kilogram of ferroboron powder, 0.010 kilogram of metallic nickel powder, 0.050 kilogram of metallic chromium powder, 0.010 kilogram of metallic titanium powder, 0.105 kilogram of iron powder (the particle size of powder is to pass through 40 mesh sieves), 0.150 kilogram of titanium carbide ceramic powder, particle size is 60 mesh. 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 stainless steel belt groove, and the filling rate was 32%. Close the U-shaped groove so that the powder is wrapped in it. Then make it pass through 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, and draw and reduce diameter, and finally make it 1.8mm in diameter. Spray metal coating on the surface of equipment and pip...

Embodiment 3

[0023] A stainless steel strip (304) of 14×0.3 (14 mm in width and 0.3 mm in thickness) is selected for use. Roll it into a U shape first. Get 0.150 kilogram of ferroboron powder, 0.050 kilogram of metallic nickel powder, 0.025 kilogram of metallic chromium powder, 0.015 kilogram of metallic titanium powder, 0.100 kilogram of iron powder (the particle size of powder is to pass through 40 mesh sieves), 0.160 kilogram of titanium carbide ceramic powder, particle size is 60 mesh. 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 stainless steel belt groove, and the filling rate was 35%. Close the U-shaped groove so that the powder is wrapped in it. Then make it pass through drawing dies with diameters of 3.0mm, 2.8mm, 2.6mm, 2.5mm, 2.4mm, 2.3mm, 2.2mm, 2.1mm, 2.0mm, draw and reduce the diameter one by one, and finally make the diameter up to 2.0mm. Spray metal coating on the surface of equipmen...

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Abstract

An iron-base wear electrical arc spraying dust core wire containing TiC ceramics belongs to surface project domain. The TiC ceramics have high fusing point and highest air rigidity, which is the most anti-abrasive material used at normal temperature, but there is no person to use TiC ceramics as hard phase to prepare arc spraying dust core wire. The invention is about an iron-base wear electrical arc spraying dust core wire containing TiC ceramics and is characterized in that the mass percentage content range of the said dust core components is as follows: 10-40 % boron - iron, 2-10 % metallic nickel, 20-35 % titanium carbide ceramics, 5-10 % chrome metal, 2-4% metallic titanium and the residue is metallic iron. The covering prepared with the invented dust core has high superficial Rockwell hardness and microhardness, and the antifriction particle abrasiveness is far better than Q235 low-carbon steel.

Description

technical field [0001] The invention discloses a wear-resistant electric arc spraying powder core wire material of iron-based TiC-containing ceramics, which belongs to the field of surface engineering in material processing engineering, and is mainly used in the surface protection of wear-resistant parts and parts in industries such as electric power, energy, and automobiles. Background technique [0002] Abrasion is the main form of material damage, and it has always been a subject of great concern in the industrial field. It has brought huge economic losses and social harm to human beings. Therefore, using modern science and technology to economically and safely prevent, control or reduce material damage wear, is of great significance. How to prevent wear 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 wear-resistant metal or cermet coating is applied to the wear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/131
Inventor 贺定勇蒋建敏张发云傅斌友李晓延栗卓新王智慧
Owner BEIJING UNIV OF TECH
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