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Method for plasma spraying and melting iron-based or cobalt-based wear-resistant alloy layer on titanium alloy surface

A surface plasma and wear-resistant alloy technology, which is applied in the field of titanium alloy surface modification, ion spray melting iron-based or cobalt-based wear-resistant alloy layer, can solve the problems of low bonding strength, shallow penetration layer, etc. The effect of simple process and wide application prospects

Active Publication Date: 2018-10-09
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to invent a method for plasma spraying and melting iron-based or cobalt-based wear-resistant alloy layers on the surface of titanium alloys in view of the problems of low bonding strength and shallow permeation layer in the existing titanium alloy surface modification layer

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  • Method for plasma spraying and melting iron-based or cobalt-based wear-resistant alloy layer on titanium alloy surface
  • Method for plasma spraying and melting iron-based or cobalt-based wear-resistant alloy layer on titanium alloy surface
  • Method for plasma spraying and melting iron-based or cobalt-based wear-resistant alloy layer on titanium alloy surface

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Embodiment 1

[0029] A method for plasma spraying and melting an iron-based wear-resistant alloy layer on the surface of a titanium alloy, which includes the following steps:

[0030] 1) Cut the Ti6Al4V alloy into Φ30mmx3mm by wire, and clean the surface oil stains with absolute ethanol.

[0031] 2) Polish the cleaned Ti6Al4V alloy surface with metallographic sandpaper 120#, 280#, 500# accordingly.

[0032] 3) Clean the polished Ti6Al4V alloy with acetone in an ultrasonic cleaner for 5 minutes.

[0033] 4) Load stellite Fe 253H iron-based alloy powder (with a particle size of 45-160μm) into the powder feeding machine, and fix the polished and cleaned Ti6Al4V alloy on the turntable, and prepare the wear-resistant layer by plasma spray melting process. The specific parameters are Welding current 40A, initial current 5A, turntable speed 4.5r / min, powder feeding rate 20g / min, ion gas flow rate 1.5L / min, powder feeding gas flow rate 2.3L / min, shielding gas flow rate 8L / min, arc decay time 2.5s.

[0034]...

Embodiment 2

[0036] A method for plasma spraying and melting a cobalt-based wear-resistant alloy layer on the surface of a titanium alloy, which includes the following steps:

[0037] 1) Cut the Ti6Al4V alloy into Φ30mmx3mm by wire, and clean the surface oil stains with absolute ethanol.

[0038] 2) Polish the cleaned Ti6Al4V alloy surface with metallographic sandpaper 120#, 280#, 500# accordingly.

[0039] 3) Clean the polished Ti6Al4V alloy with acetone in an ultrasonic cleaner for 5 minutes.

[0040] 4) Load the stellite 6H cobalt-based alloy powder (with a particle size of 40-150μm) into the powder feeding machine, and fix the polished and cleaned Ti6Al4V alloy on the turntable, and prepare the wear-resistant layer through the plasma spraying process. The specific parameters are welding Current 40A, initial current 5A, turntable speed 4.5r / min, powder feeding rate 20g / min, ion gas flow rate 1.5L / min, powder feeding gas flow rate 2.3L / min, shielding gas flow rate 8L / min, arc decay time 2.5 s. ...

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Abstract

A method for spraying and fusing an iron-based or cobalt-based wearable alloy layer on a titanium alloy surface through plasma is characterized by comprising the following steps: 1) cutting a material to be processed into size as requirement in a linear cutting manner, and cleaning and deoiling through an organic solution; 2) rubbing the surface of the cleaned material through pieces of metallographic abrasive paper 120#, 280# and 500# in sequence; 3) ultrasonically cleaning the rubbed material through an organic cleaning agent; and 4) feeding spraying and fusing material powder into a powder feeder, fixing the rubbed material on a rotary table, and preparing the wearable layer through a plasma spraying and fusing technique. The method is simple, low in cost, and high in efficiency; the prepared spraying and fusing layer is high in wearable performance and high in combining performance; the actual problems in engineering production is solved.

Description

Technical field [0001] The invention relates to a material modification technology, in particular a titanium alloy surface modification technology, in particular to a method for plasma spraying an iron-based or cobalt-based wear-resistant alloy layer on the surface of the titanium alloy. Background technique [0002] As we all know, titanium and titanium alloys have the advantages of high specific strength, good corrosion resistance, low elastic modulus, and good biocompatibility. They are gradually being used in the main fields of the national economy, especially in ship and navigation, vehicle engineering, and biology. Fields such as medicine have broad prospects. But it also has shortcomings such as low hardness and poor wear resistance, which severely limits its further development. Therefore, the surface modification of titanium and its alloys has attracted more and more attention. [0003] There are many surface modification technologies for titanium and titanium alloys. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/06
CPCC23C4/06
Inventor 许晓静杨松韩天贾明权张洁何星华刘庆辉黄晶何志盛
Owner JIANGSU UNIV