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Method for preparing large-area high-performance color stainless steel by laser oxidation coloring

A stainless steel, large-area technology, applied in coating, metal material coating process, solid-state diffusion coating, etc., to achieve the effect of suitable for mass production, good reproducibility, and strong bonding

Inactive Publication Date: 2010-07-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the preparation of large-area high-performance colored stainless steel by coloring stainless steel with continuous laser oxidation at home and abroad.

Method used

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  • Method for preparing large-area high-performance color stainless steel by laser oxidation coloring
  • Method for preparing large-area high-performance color stainless steel by laser oxidation coloring
  • Method for preparing large-area high-performance color stainless steel by laser oxidation coloring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Steps

[0026] 1) Grind the wire-cut stainless steel on a pre-grinder to a roughness of Ra3.0μm with No. 280-1000 sandpaper, and then use metallographic sandpaper to finely grind the stainless steel after the above treatment to a roughness of Ra1.5μm, and then use alcohol Wash in ultrasonic wave at 20°C for 10 minutes, and dry quickly in hot air after taking it out;

[0027] 2) Place the stainless steel treated in step 1) on the X-Y computer-controlled workbench, and carry out laser oxidation and coloring treatment in an environment with an oxygen flow rate of 1L / min: the X-Y computer-controlled workbench moving speed is 2mm / s, The continuous laser power is 50W, the laser rectangular spot size is 0.5mm×1mm, the laser action time is 1s, the defocusing distance is 0.01mm, and the spot overlap rate is 10%, and a blue-black oxide film on the stainless steel surface is obtained;

[0028] 3) Wash the colored stainless steel treated in step 2) with alcohol in an ultrasonic...

Embodiment 2

[0035] 1. Steps

[0036]1) Grind the wire-cut stainless steel on a pre-grinding machine to a roughness of Ra2.0μm with 280-1200 sandpaper, and then use metallographic sandpaper to finely grind the stainless steel after the above treatment to a roughness of Ra1.0μm, and then use alcohol Wash in ultrasonic at 30°C for 15 minutes, and dry quickly in hot air after taking it out;

[0037] 2) Place the stainless steel treated in step 1) on the X-Y computer-controlled workbench, and carry out laser oxidation and coloring treatment in an environment with an oxygen flow rate of 2L / min: the X-Y computer-controlled workbench moving speed is 5mm / s , the continuous laser power is 150W, the laser rectangular spot size is 1mm×1mm, the laser action time is 2s, the defocusing distance is 5mm, and the spot overlap rate is 20%, and a golden oxide film on the surface of stainless steel is obtained;

[0038] 3) Wash the colored stainless steel treated in step 2) with alcohol for 15 minutes in an ...

Embodiment 3

[0044] 1. Steps

[0045] 1) Grind the wire-cut stainless steel on a pre-grinding machine to a roughness of Ra1.5μm with sandpaper No. Wash in ultrasonic wave at 40°C for 20 minutes, and dry quickly in hot air after taking it out;

[0046] 2) Place the stainless steel treated in step 1) on the X-Y computer-controlled workbench, and carry out laser oxidation and coloring treatment in an environment with an oxygen flow rate of 3L / min: the X-Y computer-controlled workbench moving speed is 10mm / s, The continuous laser power is 300W, the laser rectangular spot size is 1.5mm×2mm, the laser action time is 3s, the defocusing distance is 5mm, and the spot overlap rate is 30%, and a bright purple red stainless steel surface oxide film is obtained;

[0047] 3) Wash the colored stainless steel treated in step 2) with alcohol for 20 minutes in an ultrasonic wave at 40°C, take it out, and quickly dry it in hot air to obtain a clean, stable, and high-performance colored stainless steel.

[...

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Abstract

The invention discloses a method for preparing large-area high-performance color stainless steel by laser oxidation coloring, relating to the field of material surface modification. The steps are as follows: 1) treating the stainless steel to be a certain size; 2) carrying out pre-treatment on the treated stainless steel; 3) carrying out large-area color treatment of laser oxidation after pre-treatment; and 4) preparing the large-area high-performance color stainless steel by simple after treatment to the stainless steel with oxidation coloring. The method uses optical-heat-chemical effect oflaser to generate oxide films with difference types and thicknesses, colors the surface of the stainless steel together by self color of the oxide films and interference effect of the films, and adopts a specially-made rotating laser head to prepare large-area curved or flat color stainless steel. The large-area color stainless steel prepared by the invention has more stable color film layer, rich color, good reproducibility, high hardness and good wear resistance, also has simple technique, easy operation and no pollution and is suitable for batch production on large scale.

Description

technical field [0001] The invention relates to the field of material surface modification, in particular to a method for preparing large-area high-performance colored stainless steel by laser oxidation and coloring. Background technique [0002] Stainless steel is an important application material in modern industry. Because of its excellent characteristics such as high strength, corrosion resistance, easy processing and glossy surface, it is widely used in aerospace, petrochemical, automobile, machinery, instrumentation, medicine, It has been widely used in energy and architectural decoration. With the progress of society, the rapid development of economy in all walks of life and the improvement of people's living standards, the single color of stainless steel can no longer meet the demand, and the color diversity of stainless steel has become inevitable. For this reason, people are actively researching coloring treatment technology, and strive to obtain stainless steel w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/14
Inventor 崔承云张永康崔熙贵张朝阳鲁金忠管海兵钱晓明
Owner JIANGSU UNIV
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