Method for eliminating metal body surface reflection

A metal body and reflective technology, which is applied to devices and coatings that apply liquid to the surface, and can solve problems such as inconvenience in work, uncertainty and error in 3D measurement data, and inaccurate measurement data.

Inactive Publication Date: 2009-09-16
马建春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the surface of the metal body is relatively smooth, when it encounters light, the surface of the metal body will produce specular reflection. Therefore, when using optical instruments to measure the surface of the metal body in three dimensions, the measurement data is often inaccurate due to the reflection on the surface of the metal body. Or the problem that it cannot be measured makes the three-dimensional measurement data have uncertainty errors. As long as this error exists, the consistency and repeatability of the three-dimensional measurement data of the same metal body cannot be achieved, which brings a lot of inconvenience to the work in related fields. place

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The method for eliminating light reflection on the surface of a metal body of the present invention includes the following process steps:

[0027] (1) Corrosion: soak the metal body in a hydrochloric acid solution at 5°C for 10 minutes. The metal body is a broken copper wire with a diameter of 3 mm, and the weight percentage concentration of the hydrochloric acid solution is 10%;

[0028] (2) One water wash: wash the metal body soaked in step (1) with clear water for 2 minutes;

[0029] (3) Neutralization: Put the metal body washed with water in step (2) into a sodium carbonate solution for 3 minutes, and the weight percentage concentration of the sodium carbonate solution is 50%;

[0030] (4) Secondary water washing: Wash the neutralized metal body with flowing water for 8 minutes;

[0031] (5) Drying: the metal body after the second water washing is dried, and the drying treatment is heating and drying with the temperature controlled below 45°C (using a 1KW electric hair ...

Embodiment 2

[0034] The method for eliminating light reflection on the surface of a metal body of the present invention includes the following process steps:

[0035] (1) Corrosion: soak the metal body in a hydrochloric acid solution at 4°C for 15 minutes. The metal body is a broken copper wire with a diameter of 6 mm, and the weight percentage concentration of the hydrochloric acid solution is 20%;

[0036] (2) One water wash: wash the metal body soaked in step (1) with clear water for 4 minutes;

[0037] (3) Neutralization: The metal body washed with water in step (2) is soaked in sodium bicarbonate solution for 6 minutes, and the weight percentage concentration of sodium bicarbonate solution is 60%;

[0038] (4) Secondary water washing: Wash the neutralized metal body with flowing water for 15 minutes;

[0039] (5) Drying: The metal body after the second water washing is dried, and the drying treatment is to dry naturally at a normal temperature of 35°C;

[0040] (6) Anti-rust: Put the drie...

Embodiment 3

[0042] The method for eliminating light reflection on the surface of a metal body of the present invention includes the following process steps:

[0043] (1) Corrosion: The metal body is immersed in a hydrochloric acid solution at 3°C ​​for 20 minutes. The metal body is a broken copper wire with a diameter of 8 mm, and the weight percentage concentration of the hydrochloric acid solution is 30%;

[0044] (2) One water wash: wash the metal body soaked in step (1) with clear water for 5 minutes;

[0045] (3) Neutralization: the metal body washed with water in step (2) is soaked in sodium hydroxide solution for 9 minutes, and the weight percentage concentration of the sodium hydroxide solution is 30%;

[0046] (4) Secondary water washing: Wash the neutralized metal body with flowing water for 20 minutes;

[0047] (5) Drying: The metal body after the second water washing is dried, and the drying treatment is natural air drying at a normal temperature of 30°C;

[0048] (6) Rust prevent...

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Abstract

Method for eliminating metal body surface reflection includes steps of immersing the metal body in acid solution for 1-20 minutes at temperature of 3-6 DEG C; washing the immersed metal body with clean water for 1-5 minutes; immersing the washed metal body in alkali solution for 1-10 minutes; washing the neutralized metal body with flow water for 1-20 minutes; and drying the washed metal body. The acid solution is hydrochloric acid solution, and the alkali solution is any one of sodium carbonate solution, sodium bicarbonate solution, sodium hydroxide solution, potassium hydroxide solution and barium hydroxide solution. The drying treatment is any one of heating drying, natural airing at normal temperature or air drying. The method also includes a step of carrying out antirust treatment for the dried metal body by using oil or paint. The metal body treated by the method does not have reflection phenomenon when using optical instrument to carry out three dimensional measurement, and realizes uniformity and repeatability of three dimensional measurement data of same metal body.

Description

Technical field [0001] The invention relates to a method for eliminating light reflection on the surface of a metal body. Background technique [0002] At present, optical instruments such as grating projection measuring instruments and electron microscope measuring instruments are often used in criminal investigation and investigation to perform three-dimensional measurements on metal objects (such as bullets, locks, etc.) to collect three-dimensional information on the surface of the metal. The three-dimensional information on the surface of the body is processed by computer to obtain accurate data on the surface of the metal body. [0003] Because the surface of the metal body is relatively smooth, the surface of the metal body will have specular reflection when it is exposed to light. Therefore, when using optical instruments to measure the surface of the metal body in three dimensions, the measurement data is often inaccurate due to the reflection of the metal body surface O...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C23F1/16B05D7/14
Inventor马建春
Owner马建春