ã€China Aluminum Industry Network】 aluminum alloy doors and windows have the characteristics of good performance, light weight, beautiful, good lighting, durable, easy to recycle and reuse of profiles, no environmental pollution and other characteristics of people's favorite. Enhancing its thermal insulation and energy-saving performance is a key technical problem to be solved in aluminum alloy doors and windows. To improve the structure and realize diversified system design, we must improve the performance and grade of existing doors and windows. In the past, only the low-level structure of labor saving, material saving, and low price was pursued, and the performance was improved mainly by sliding windows. Casement window is the main transition. Raw material use standard specification: 1. The total requirements for frame materials should be good strength, good heat insulation performance, easy to make into a variety of shapes, but also easy to recycle and conducive to environmental protection. Aluminum alloy window frame material should improve its heat insulation performance and should be made into broken bridge or compound type. 2. Glass should promote the use of hollow glass, and low-E (low-emission) hollow glass should be promoted in the north. In the south, solar-coated glass should be promoted in regions where solar radiant heat predominates. Foreign developed countries basically do not use single glass and white glass, because they are not conducive to energy saving and improving the living environment. 3. To promote the use of double-channel seals and hollow glass made of polysulfide hollow glass glue. The insulating glass spacers should adopt continuous angled structure. If four-corner plug-in type is used, butyl rubber must be used for sealing at the joints. deal with. Single-pass sealed hollow glass is not available. Insulating glass with secondary silicone sealant is also not advisable because their service life is relatively short. 4, aluminum alloy doors and windows must be processed to achieve quality; because only in this way, to make it have a good use of performance and good environmental beautification. The aluminum doors and windows industry must establish the awareness of counterfeits, and must stop a few people from producing products that resist inferior products. In order to improve the thermal insulation and sound insulation performance of products, it is necessary to promote the use of heat-insulating aluminum profiles, insulating glass and high-quality accessories in large quantities. At the same time, we must adopt a wide range of system designs to develop new products that are economical and practical and conform to China’s national conditions. Make it become the mainstream of the 21st century aluminum doors and windows industry in China. According to reports, the thermal conductivity of aluminum alloy doors and windows of thermal insulation bridges has a K value of 3W/m2.K or less, thermal conductivity is 40% to 70% lower than non-insulated aluminum alloy doors and windows, and heating costs are reduced by about 30%. Above 35 decibels, watertightness and airtightness are good, all reaching the national A1 class window standard. With good insulation and heat insulation properties, broken aluminum doors and windows are gradually being widely used in cold winter regions such as northeast, northwest, and north China.