Equipment introduction: >
The equipment on the device is equipped with a steel ball bead head with a flat contact surface and a diameter of (6.35 ± 0.01) mm, which can apply a load (133 ± 1).
thick measuring instrument: >The diameter The quality of the measured head is (85 ± 3) g, and the score value is 0.01mm.
Sample: >Test three sizes with a test piece of 60mm*60mm.
Test steps: > At the test parts marking measurement point, use the specified thicknesses to measure the thickness of the point thickness instrument. T0.将试件耐磨层向上置于凹陷试验机的工作平台上，在标记测量点上均匀地加载（133±1）N的负荷，2S内开始计时，保持（540±2）S，然后去掉所以Load, measurement of the thickness of the measuring point T1, accurate to 0.01mm.
> Residual depression calculated according to the formula, using the residual depression of 3 test parts, the average arithmetic average Value representation.
D -residual depression, the unit is millimeter (mm); >
T0 —— The thickness of the test piece before load, the unit is millimeter (mm);
T1 —— Except the thickness of the test piece after the load, the unit is millimeter (mm).
Floor residual depression test machine > Also known as floor residual indentation test machine, the test machine is a method that determines the residual depression of the elastic floor. After load, it is produced on elastic or thin -piece floor coating. The difference between the initial thickness and the thickness measured after the loading, in the specified loading capacityThe distance between the two parallel boards is used with the lower shop material.The sample is subject to static static, and the thickness before the force is measured and the thickness after the recovery period.
Main technical parameters >