What Are the Causes of the Abnormal Corrosion of the Doors and Windows-Aluminum Profiles SUPPLIER

Today, with the rise of industries around the world, the harm of industrial atmosphere to doors and windows and hardware has become quite common. The choice of hardware materials and appropriate surface protection have always attracted the attention of the industry. However, in recent years, due to the did not take corresponding protection measures on doors and windows and windows and windows. After the use of some aluminum alloy doors and window profiles for a period of time, it has abnormal corrosion, causing disputes between users, construction units and aluminum alloy door window profile manufacturers. In response to some abnormal corrosion of some aluminum alloy doors and window profiles, doors and window aluminum manufacturers investigated the causes of abnormal corrosion, and made a brief analysis, summarizing some feasible prevention measures to share with you.

Through on -site surveys and analysis of abnormal corrosion of various places, the abnormal corrosion phenomenon of aluminum alloy doors and window types can be roughly divided into the following three types:

1: The windows of the aluminum alloy doors are declining upwards. The corner of the wall is irregular and abnormal corrosion of different sizes. Some corrosion points flow out of light yellow mucus, and small white particles corrosion products on the edges. During the wall construction process, it is related to chloride mortar exceeding the excess of sea sand mortar. The aluminum alloy profile and the wall contact surface are applied as asphalt anticorrosive treatment. Winding protection does not require a protective film. After installation, the wall is affected by the water seepage and humidity for a long time, and the water seepage with chloride ions for a long time will be corroded. At the same time, fixed nails were entered during the installation of aluminum alloy doors and windows. Because the screw did not insulating with aluminum alloy profiles, a microcarmark circuit was formed, which accelerated the corrosion of the aluminum alloy profile.

2: The window type of the aluminum alloy door is declining upwards, and the corner of the edge of the wall is irregular and abnormal corrosion of different sizes. Some corrosion points flow out of light yellow mucus, and small white particles corrosion products on the edges. The construction unit (or user) considers to strengthen the support strength of this type of square pipe profile, put slot steel in the square tube -type material, and pour glue cement into the cavity of the type of material. (Due to the limitations of the coating process, the inner cavity surface of the aluminum alloy profile is usually non -coating), so that the aluminum aluminum body in the tube directly contacted the exudation of strong alkaline cement, which generates alkaline corrosion. As a result, due to the high temperature during the corrosion process As a result, the outer coating falls off, and over time, the corrosion will form perforation on the outer surface.

3: The windows of the aluminum alloy doors are declining upwards, and the corner of the wall is irregular and abnormal corrosion of different sizes. Some corrosion points flow out of light yellow mucus, and small white particles corrosion products on the edges. During the construction and installation of aluminum alloy doors and windows, the aluminum -based material and strong alkaline water seepage are used for long -term contact due to the lack of use of a protective film for wrapping protection. Essence