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Method for altering color of white coral by laser

A laser and coral technology, used in special decorative structures, decorative arts, clothing, etc., can solve the problems of easy falling off, time-consuming and laborious, and low gloss.

Inactive Publication Date: 2008-12-17
CHENGDU 3D CHANGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The color of the artificial colored coral changed by this method is easy to fall off, and the gloss is not high. With the growth of time, the color gradually fades or fades. It cannot be preserved for a long time, nor can it achieve the effect of beauty and the value of appreciation.
Moreover, the dyeing process is relatively cumbersome, and the requirements for the concentration ratio of the pigments are relatively high, which is time-consuming and laborious.

Method used

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  • Method for altering color of white coral by laser
  • Method for altering color of white coral by laser
  • Method for altering color of white coral by laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Cut the white coral into thin slices with a thickness of 1mm with a crystal cutter, and then clean the surface with an ultrasonic cleaner;

[0022] Put the white coral on the rotating platform, use the laser as the heat source for irradiation preheating, adopt the single-sided scanning irradiation method, the laser spot area covers the entire surface of the sample, the rotation speed of the rotating platform is 24rad / min, and the irradiation preheating time 60s, the power density of the laser is 9w / cm 2 ;

[0023] After preheating, increase the power density of the laser to 16w / cm 2 After continuing to irradiate for 120s, the laser light source was turned off, and the sample was cooled to room temperature in the air, and processed into a light brown-red coral sample.

[0024] It can be seen from Figure 1 that the characteristic peaks of the Raman spectrum of white coral before laser irradiation (figure b) almost completely correspond to the Raman spectrum of calcite m...

Embodiment 2

[0026] Cut the white coral into thin slices with a thickness of 1.5mm with a crystal cutter, and then clean the surface with an ultrasonic cleaner;

[0027] Put the white coral on the rotating platform, and use the laser as the heat source for irradiation preheating. The irradiation adopts a single-sided scanning irradiation method. The laser spot area covers the entire surface of the sample. The rotation speed of the rotating platform is 24rad / min. The heat time is 40s, and the power density of the laser is 10w / cm 2 ;

[0028] After preheating, increase the power density of the laser to 18w / cm 2 After continuing to irradiate for 60 seconds, the laser light source was turned off, and the sample was cooled to room temperature in the air, and processed into a light brown-red coral sample.

[0029] It can be seen from Figure 2 that the change of Raman spectrum reflects the structural change inside the coral, which leads to the change of diffraction. As shown in the X-ray diffr...

Embodiment 3

[0031] Cut the white coral into thin slices with a thickness of 2mm with a crystal cutter, and then clean the surface with an ultrasonic cleaner;

[0032] Put the white coral on the rotating platform, and use the laser as the heat source for irradiation preheating. The irradiation adopts a single-sided scanning irradiation method. The laser spot area covers the entire surface of the sample. The rotation speed of the rotating platform is 24rad / min. The heat time is 45s, and the power density of the laser is 8w / cm 2 ;

[0033] After preheating, increase the power density of the laser to 17w / cm 2 After continuing to irradiate for 60 s, turn off the laser light source, cool to room temperature in the air, and process a light brown-red coral sample.

[0034] It can be seen from Figure 3 that the surface morphology of white coral after laser irradiation shows that the surface quality is improved, there is no microstructural damage such as particle impurities, cracks, and the cryst...

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Abstract

The invention relates to a method for changing the color of a white coral by using a laser, which belongs to the modification field of an inorganic substance. The color of the coral is changed by the laser by means of the following method: the white coral is arranged on a turning platform and irradiated and preheated by the laser as a heat source; the irradiation adopts a single-sweep irradiation way; the area of a laser spot covers the surface of the entire sample; the rotation rate of the turning platform is 24 rad / min; irradiating and preheating time is 30 to 60s; the power density of the laser is 8 to 12 w / cm<2>; after the preheating, the power density of the laser is increased to 16 to 20 w / cm<2> to continuously irradiate the sample of the white coral; after the irradiating time reaches 40 to 120s, the laser light source is turned off; then the sample is cooled down to room temperature. The laser irradiation causes the defect of a color center so as to achieve the purpose of changing the color of the white coral into light read brown; after changing the color, the sample of the coral is free of damage; an outward appearance is smooth; the method for changing the color of the white coral by using the laser is capable of changing the color of the white coral fast, and has the advantages of simplified technology, low energy consumption, low time consumption, and large preparation cost saving.

Description

technical field [0001] The invention belongs to the field of modification of inorganic substances. Specifically, the present invention belongs to the laser heat treatment of inorganic substances, which changes the color of inorganic substances through treatment. Background technique [0002] Coral is an inorganic compound, and its main component is calcium, mostly calcium carbonate and a small amount of magnesium carbonate, magnesium sulfate, calcium sulfate, iron oxide, etc. [0003] Red corals and colored corals have considerable ornamental value and economic value, but because their survival and growth conditions are affected and limited by many factors in the natural environment, natural red corals and colored corals are extremely rare. [0004] At present, more and more artificial colored corals are used in the market, and most of them are concentrated on traditional raw material dyeing, and the dyeing of filled coral is the most representative. Filled coral dyeing is...

Claims

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Application Information

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IPC IPC(8): B44C5/00A44C27/00
Inventor 蒋毅坚高毅季凌飞
Owner CHENGDU 3D CHANGE TECH
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