Bright etching is an advanced surface treatment technology for aluminum alloys. It involves a significant transformation of the acid etching bath, incorporating a sand-surface polishing tank and a smooth-light polishing tank to perform bright processing on the etched material. This innovative approach not only retains the advantages of traditional acid etching—such as strong grain formation, rapid sand development, and low aluminum consumption—but also eliminates the darkening of the surface and contamination issues in coloring and electrophoresis tanks. This breakthrough has positioned the technology at the forefront of international standards and earned two national invention patents.
Bright etching effectively solves the long-standing issue of darkening in acid-etched sand surface materials. It represents an upgraded version of conventional pretreatment methods like alkali etching, acid etching, and low-temperature polishing. The technology can produce flat light materials, sandblasting materials, and even a new type of bright acid-etched matte finish. Its application has already been adopted by major aluminum processing companies such as Guangdong Xingfa Group, and its widespread use is expected to significantly enhance China's competitiveness in the global aluminum industry.
Since 2000, acid etching technology has gained popularity due to its efficiency, fast sand development, and low aluminum consumption. Within a short time, it replaced alkali etching as the mainstream pre-treatment process before oxidation. However, the darkening of the surface remained a persistent problem, affecting product quality. Most manufacturers attempted to address this by adding alkaline pitting and neutralization tanks, but the issue was never fully resolved. Additionally, acid etching ash proved difficult to remove, often leading to contamination in coloring and electrophoresis tanks. Bright etching addresses these challenges by completely removing acid ash and restoring the metal luster, while also improving brightness and reducing aluminum consumption.
The bright etching process consists of four key stages: degreasing, bright etching, sand-surface polishing, and smooth-light polishing. Each stage plays a crucial role in achieving the desired surface finish. The degreasing tank removes oils, wax, and natural oxide layers, while the bright etching tank enhances surface brightness and removes mechanical imperfections. The sand-surface polishing tank ensures fine sand texture and removes acid ash, and the smooth-light polishing tank increases gloss and precision. These steps work together to create high-quality, bright, and uniform aluminum surfaces.
This technology introduces several innovations. For the first time, it combines brightening with etching, resulting in a green, shiny background. A four-tank system allows full acidic treatment under low-temperature conditions, producing both matte and sandblasting finishes. The concept of flat-light polishing was introduced to reduce brightness loss during anodizing, and sand-surface polishing was developed to achieve complete acid ash removal. These advancements have led to improved performance, reduced waste, and higher efficiency in aluminum processing.
The bright etching process includes: degreasing and dewaxing, washing, bright etching, sand-surface polishing, additional washing, flat polishing, final rinsing, and oxidation. Each step is carefully controlled to ensure optimal results. The bright etching solution, which contains special additives, improves surface brightness and reduces the need for additional polishing tanks. It operates efficiently at temperatures between 35°C and 45°C, with working times ranging from 3 to 12 minutes.
In conclusion, bright etching represents a major technological advancement in the aluminum industry. It offers a more efficient, environmentally friendly, and high-quality alternative to traditional surface treatments. With its ability to enhance brightness, reduce defects, and eliminate contamination, this technology is set to revolutionize the way aluminum alloys are processed globally.
7 Bars Led Grow Light
7 bars led grow lights is a special lamp to provide light for plants. It usually consists of seven light bulbs, each with a different color and wavelength to simulate the spectrum of natural sunlight. This light fixture is widely used in indoor planting and gardening.
The use of the 7 bars full spectrum led grow lights mainly depends on the following aspects:
1. Light time: plants need light for photosynthesis, and different plants have different needs for light. In general, most plants need 10-12 hours of light per day, so 7 bars plant lights are usually set to work 10-12 hours per day.
2. Light intensity: Plants also have different needs for light intensity. Some plants require more light, while others require less light. 7 bars waterproof led grow lightss usually have an adjustable light intensity function that can be adjusted according to the needs of different plants.
3. Distance and Angle: The distance and Angle between the plant and the 7 bars indoor grow light will also affect the lighting effect. In general, the distance between the plant and the lamp should be kept within an appropriate range to ensure that the plant can fully receive the light.
4. Types of plants: Different plants have different needs for light. Some plants need stronger light to promote growth and flowering, while others have lower light requirements. Therefore, when using the 7 bars indoor grow lights veg, it needs to be adjusted according to the type and needs of the plant.
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Shenzhen Pvison Technology Co., Ltd. , https://www.pvisunggrowlight.com