A method of making fish-scale textures on the surface of aluminum-magnesium alloys with laser

Abstract

The invention provides a method of manufacturing scale-like grains on the surface of an aluminum-magnesium alloy with laser and belongs to the field of aluminum-magnesium alloy processing. The methodprovided by the invention comprises the following steps of adjusting a focal point: adjusting a conducting position to the focal point of a laser or a focal depth range of a field lens; drawing a vector diagram: drawing the vector diagram for the conducting position and copying and pasting the vector diagram to form a first diagram layer and a second diagram layer; laser bottom scanning: filling the first diagram layer of the vector diagram of a contour and scanning the same by the laser to form a compact alloy layer on the surface of the aluminum-magnesium alloy; and carrying out laser carving of the scale-like grains: filling the second diagram layer of the vector diagram of the contour, and generating the scale-like grains on a basic face of the original compact alloy layer by the laser. The method provided by the invention has the beneficial effects that the production efficiency is improved, a processed product is stable in performance, the conductivity is improved, and the product yield is improved; detection instruments such as a special multimeter and a magneto-ohmmeter are not used to detect, the step of quality detection is simplified, and detection can be performed directly through appearance, so that the production efficiency is improved greatly.

Description

technical field [0001] The invention relates to an aluminum-magnesium alloy processing technology, in particular to a method for making scale-like lines on the surface of an aluminum-magnesium alloy with a laser. Background technique [0002] Aluminum-magnesium alloy has many advantages such as low density, high strength, easy forming, easy mass production, and low manufacturing cost. It is more and more widely used in the production of skeletons, components, and accessories of 3C products. [0003] Taking die-casting aluminum alloy ADC12 as an example, aluminum accounts for about 85% of its chemical composition, and other components are shown in Table 1: [0004] element Silicon (Si) Iron (Fe) Copper (Cu) Manganese (Mn) Magnesium (Mg) result,% 10.63 0.90 1.79 0.23 0.19 element Nickel (Ni) Zinc (Zn) Titanium (Ti) Lead (Pb) Tin (Sn) result,% 0.05 0.96 0.04 0.05 0.02 [0005] Table 1 [0006] Among them, aluminum, magn...

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Problems solved by technology

[0020] A. The laser energy given by this method is relatively consistent, but the conductive performance will be inconsistent due to the uneven surface material, and the yield rate is generally only 75-85%;

[0021] B. This method belongs to direct oxygen breaking. The chemically stable oxides on the surface of the aluminum-magnesium workpiece will be removed by laser gasification, thereby exposing the internal aluminum and magnesium to the air. Chemically react with oxygen in the air within 2 weeks to gradually generate aluminum-magnesium oxide, and the electrical conductivity will gradually decrease over time;

[0022] C. The conductive potential produced by this method can only be measured by instruments, and cannot be detected by appearance

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