JP2002029868A - Surface working method for various sintered compacts by heat of high temperature - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively work various sintered compacts by marking these sintered compacts with various original characters, pictures, patterns, symbols, etc. by post working in such a manner that these characters, etc., area not easily annihilated even under various climatic conditions. SOLUTION: The characters, pictures, patterns, symbols, etc. are created in various sintered compacts by partially subjecting the sintered compacts to irradiation with the heat of a high temperature for a certain time to liquefy or sublimate these parts, changing the irradiation positions and similarly irradiating these parts, and continuously repeating such processes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0101]

[Industrial application field] It can be effectively used in all fields using various sintered bodies.

[0092]

2. Description of the Related Art Conventional products have been manufactured by putting them in a mold, applying a medicine, or applying paint or the like after formation before final formation.

[0093]

Various original characters, pictures, patterns and symbols are put into various sintered bodies by post-processing so that they do not easily disappear even under various weather conditions. I want to make the processing cheap.

[0093]

By irradiating various types of sintered bodies with high-temperature heat partially for a certain period of time, the parts are liquefied or elevated, and the irradiation position is changed and irradiation is similarly performed. The process is continuously repeated to create characters, pictures, patterns, symbols, and the like.

[0056]

According to the present invention, individual original products can be manufactured at low cost using various conventional sintered products.

[0086]

[Effects of the Invention] Post-processing can be simplified for products using various sintered bodies, and various processing can be performed according to individual needs.

007

[Brief description of the drawings]

Hereinafter, a processing method using a laser beam as a heat source will be described with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view when a laser beam is irradiated toward a sintered body through a lens. When a laser beam having a width of W1 is applied to the sintered body through the lens, the sintered body undergoes a chemical change in the range of the circle of the W2 diameter, and liquefies and vitrifies. At this time, W1 and distance H1
Is changed, W2 is also changed. Next, calorie Q1
When the irradiation times T1 and H1 are changed, the depth H2 also changes. At that time, when the value of the heat quantity Q2 of the surface contacting the sintered body exceeds a certain limit, the chemical change that occurs is changed to liquefaction, not liquefaction. The value of Q2 at this time varies depending on the type and characteristics of the sintered body. Further, when wind is applied to the irradiation surface by the force of the wind pressure P, the liquefied portion is blown off by the wind pressure to have a shape as if engraved.
At this time, the amount blown off also changes according to the change of P.

FIG. 2 is a plan view of the article after irradiation as viewed from above.

FIG. 3 is a plan view of the object viewed from above after the irradiation is temporarily stopped from the position of FIG. 2, the irradiation position is moved by L1 and irradiation is performed again; The stop time at this time is defined as T2.

FIG. 4 is a plan view of FIG. 3. L1 and T2 in FIG.
2 is a plan view of the object viewed from above after being moved to 2; FIG.

FIG. 5

FIG. 6 is a processed photograph in which the object is viewed from above after the irradiation position is moved as shown in FIG. 4 by changing the conditions as shown in FIG. is there.

FIG. 7 is a processed photograph in which the object to be processed is a brick, and the irradiation position, the irradiation time, the amount of heat, the height of the lens, and the like are controlled by an NC control machine, and the characters are actually represented as characters.

[Explanation of symbols]

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Claims (1)

[Claims] 1. A method for partially melting the surface of various sintered bodies with high-temperature heat and additionally processing characters, pictures, patterns, symbols, etc.