Initial Drying Anti-Crack Tester 1. Scope of Application The Initial Drying Anti-Crack Tester is designed and manufactured according to the national standard GB9779-88. It is primarily used for testing the initial drying crack resistance of architectural paints and indoor and outdoor construction putties under specified wind speed conditions. 2. Working Principle and Structure of the Testing Machine 1. Working Principle: The tester operates within a wind tunnel where a test plate rack is positioned parallel to the direction of airflow. Once the axial flow fan is activated, the wind speed is adjusted to a range of 3 ± 0.3 m/s using an air volume control device. The coated test plate is then placed in the wind detection hole. The drying time is set according to the product standards. After the designated time has elapsed, the system automatically stops, and the surface of the test board is inspected for cracks. 2. Structure: The testing machine consists of several key components: an axial flow fan, a test wind tunnel, a test piece frame, an air volume control device, a timer, and an anemometer. These elements work together to ensure accurate and consistent testing results. The design ensures that the test environment remains stable, allowing for reliable evaluation of material performance under controlled conditions. This equipment is essential for quality control in paint and coating industries, helping manufacturers ensure their products meet required durability and performance standards before being released to the market.
7 M light tower
A 7 M light tower refers to a light tower that has a height of 7 meters. Light towers are tall structures equipped with lights that are used to provide illumination in various settings, such as construction sites, outdoor events, sports fields, and emergency situations.
A 7 M light tower is typically portable and can be easily transported and set up in different locations. It is designed to provide a wide coverage of light, ensuring visibility in dark or low-light conditions. The lights on the tower can be adjusted to different angles and heights, allowing for flexibility in directing the light where it is needed the most.
These light towers are often powered by generators or can be connected to an external power source. They may also have additional features such as adjustable height, telescopic masts, and remote control operation for convenience and ease of use.
Overall, a 7 M light tower is a versatile lighting solution that can be used in a wide range of applications to ensure safety and visibility in various environments.
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