When calibrating a coating thickness gauge, you must pay attention to these four points
Correct calibration of coating thickness gauge is crucial for measurement. Regarding calibration, a sample similar to the object being measured later will be used, meaning that both the standard sample and the object being measured should have the same shape and geometry. Basically, if more standard samples of measurement objects are matched, the measurement effect will be better.
2. Determine the following properties of the calibration sample and the measured object that match: - curvature radius of the outer surface - substrate material (such as magnetic permeability, conductivity; ideally, the standard sample and the measured object should be of the same material) - substrate thickness - size of the measurement area
Before starting the calibration of the coating thickness gauge, ensure that the calibration point, sensor prompt, and calibration template are clean. If necessary, remove any deposits such as grease, metal shavings, etc. Any impurities can also affect calibration and make it unstable.
4. Ensure to always find their respective calibration points, especially for measuring small components and corners. It is recommended to use measuring brackets for small components.
The role of coating thickness in steel structures
1. Fire prevention. The materials used in the fireproof coating of steel structures have a very low ignition point and low thermal conductivity, making them highly effective in thermal insulation and fire prevention. In theory, fire-resistant coatings on steel structures are non ignitable and can form a barrier on the surface of steel components, not only absorbing heat but also maintaining the entire steel structure in a relatively low temperature environment.
2. Bending resistance. Steel structure fireproof coating is composed of basic resin materials, and compared with traditional fireproof coatings, it has stronger flexibility and ductility. In some buildings, the application can increase the overall load capacity of the building. Choosing a steel structure fireproof coating with appropriate thickness has extremely strong bending resistance.
3. Seismic resistance. Good seismic performance is one of the reasons why fire-resistant coatings are widely used in steel structures. Often, when steel is used as a building material, it will experience increased brittleness and decreased tensile performance due to the rise in external environmental temperature, making it easy to fracture. However, applying a layer of fireproof coating on the surface can effectively resist earthquakes and increase its practicality.
