With the development of society, the high-intensity flashlight industry has increasingly higher requirements for the quality and performance of flashlights. The original plastic shells have gradually been replaced by aluminum alloy shells. Higher-end flashlight shells often use aviation-grade aluminum alloy T6061, just like Sunhighlite’s series of regular flashlights, which all adopt this material. In order to improve the wear resistance and durability of the flashlights, Sunhighlite also performs tertiary hard anodizing treatment on the surface of the flashlights. Next, let’s have a brief talk about the surface treatment process of high-intensity flashlights!
- 01 Why carry out tertiary hard anodizing treatment on the surface?
It is believed that friends who are familiar with Sunhighlite flashlights must know that Sunhighlite series flashlights will undergo tertiary hard anodizing treatment on their surfaces, so the treated flashlights will have stronger corrosion resistance.
In the case of ordinary anodizing treatment, the surface will turn white after multiple frictions; while after tertiary hard anodizing treatment, the flashlight has better corrosion resistance, wear resistance, insulation, etc., and a texture that ordinary anodizing is difficult to achieve.
- 02 Tertiary hard anodizing process
At present, aluminum alloy flashlights on the market will adopt the following two surface treatment methods: ordinary anodizing surface treatment and military-grade tertiary hard anodizing treatment.
Most manufacturers tend to choose ordinary anodizing, where the thickness of the anodic oxide film is generally 8-12 microns, and the cost is low. The wear resistance of the oxide film with a thickness of 12 microns is slightly higher, but it is easier to turn white after multiple frictions. However, high-quality high-intensity flashlights are more refined in workmanship and will choose military-grade tertiary hard anodizing treatment.
The scientific name of military-grade tertiary hard anodizing is “hard anodizing”. It is a thick-film anodizing method and a special anodizing surface treatment process for aluminum and aluminum alloys. The thickness of the anodic oxide film produced by this process can reach about 25 to 150 microns. After this treatment, the flashlight will have high corrosion resistance in air or most environments, high wear resistance, and it is also an ideal heat-insulating film layer. It also has good insulation and a series of advantages such as strong bonding with the base metal. Therefore, it has been widely used in the national defense industry and mechanical parts manufacturing industry, mainly in aluminum and aluminum alloy parts that require high wear resistance, heat resistance and good insulation performance.
Sunhighlite series flashlights adopt military-grade tertiary hard anodizing surface treatment, and are committed to creating high-quality flashlights to provide users with the best experience! If you have other flashlight processes you want to know about, you can tell us in the comment