• by admin
• 2022-10-19

Rock wool color steel sandwich panel quality inspection

When choosing rock wool color steel sandwich panel, do you often feel that you have no way to start? Rock wool, as the core material, is closely related to the overall quality of the product. Color steel plate manufacturers summarized some methods from the perspective of how to identify the quality of rock wool.

Methods for identifying rock wool quality:

1. Distinguish from color and evenness

High quality rock wool is generally yellowish brown, and the color distribution is relatively uniform. The color of inferior rock wool is not pure, and the distribution is uneven.

2. Distinguish from slag content

The slag content of high-quality rock wool is small and delicate, which can not be touched by hand. Its raw materials are basalt and diabase. The slag content of low-quality rock wool is increased, and it is mainly made of blast furnace slag and other metallurgical slag.

3. Test hydrophobicity

A certain amount of water can be sprinkled on the rock wool board to see its water permeability. Generally, high-quality rock wool has good hydrophobicity. The larger the surface area without permeability, the better the hydrophobicity. It is high-quality rock wool. Poor rock wool has good water permeability and poor hydrophobicity.

4. Test fire resistance

Rock wool has fire prevention, heat insulation and other properties. Take a small amount of rock wool and burn it with fire to observe the combustion. The non combustible rock wool is of high quality, and the combustible rock wool is of low quality.