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The technical difficulties of the three-silver LOW-E glass curtain wall for the exterior facade of the Guangzhou tempered glass factory.

Release time:

Dec 18,2024

The three-silver LOW-E technology for curtain wall glass has significantly improved performance compared to single-silver and double-silver LOW-E glass, but its production process and technical implementation also face some challenges. The following is a detailed analysis of the technical difficulties of three-silver LOW-E curtain wall glass technology:

1. Difficulties in Coating Technology

Multiple coating layers: Three-silver LOW-E glass has three layers of nano-scale silver film, which makes the coating process more complex. Each layer of silver film requires precise control of coating parameters, such as coating time, coating temperature, and coating rate, to ensure coating quality and performance.

High precision requirements for coating: To achieve excellent energy-saving effects and optical performance, the coating precision of three-silver LOW-E glass is extremely high. For example, the thickness deviation of each nano film needs to be less than 1%, with precision control within the range of 0.1nm. This requires the coating equipment to have high stability and precision, and strict monitoring and adjustment of the coating process.

2. Difficulties in Processing Technology

Machining process easily damages the film surface: Due to the susceptibility of the LOW-E glass film surface to oxidation and scratches, special care is needed during the machining process. This requires operators to have a high level of professional skills, as well as the use of high-quality cleaning water, soft cleaning brushes, and appropriate edge grinding tension to avoid damaging the film surface.

Difficulties in the tempering process: LOW-E glass is prone to issues such as long heating times, film surface overburning, and difficulty in controlling flatness during the tempering process. For three-silver LOW-E glass, due to the multiple coating layers and complex structure, these issues may be more pronounced. Therefore, it is necessary to optimize tempering process parameters, such as heating temperature, heating time, and cooling rate, to achieve good tempering effects and film surface quality.

Easily scratched film layer during the hollowing process: In the hollowing process of LOW-E glass, the film removal operation can easily scratch the film layer. To avoid this issue, advanced film removal technology and equipment need to be adopted, and strict monitoring and adjustment of the operation process are required.

3. Difficulties in Cost Control

High raw material costs: The production of three-silver LOW-E glass requires high-quality raw materials, such as high-purity silver and advanced coating materials. The cost of these raw materials is relatively high, increasing the production cost of the product.

Complex production process: The production process of three-silver LOW-E glass is relatively complex, requiring multiple steps and links. This increases energy consumption and labor costs during the production process, further raising the product's cost.

4. Difficulties in Market Application

Higher price: Due to the high production cost of three-silver LOW-E glass, its market price is also relatively high. This limits its application in some price-sensitive markets.

Low technology popularity: The three-silver LOW-E glass technology is relatively new, with low market penetration. Some customers may lack understanding of its performance and application effects, leading to certain limitations in market promotion and application.

In summary, the three-silver LOW-E technology for curtain wall glass faces challenges in coating technology, processing technology, cost control, and market application.

To overcome these challenges, continuous research and innovation in technology are needed to improve production efficiency and product quality, while strengthening market promotion and customer service to meet market demand and promote industry development.

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