1、 Main application scope and functions
This machine is designed and manufactured according to GB/T6670-2008, and conforms to ASTM American Standard D3574 and ISO8307 test standards. It is suitable for testing the falling ball resilience of soft polyurethane foam. The instrument calculates the percentage of the ratio of the maximum height of the steel ball rebound to the falling height of the steel ball, that is, the rebound rate, by which the rebound performance of the foam plastic is expressed. This machine has the characteristics of safe use, reliability, and high measurement accuracy.
2、 Host technical parameters
*Drop distance of steel ball: 460 ± 0.5% mm (national standard) 500 ± 0.5% mm (American standard)
*Steel ball diameter: ￠ 16 ± 0.05 mm
*Precision of ball rebound rate:<1.5%
*Tested sample size: 100 mm (length) x 100 mm (width) x 50mm (height)
*Floor area: 0.4m * 0.5m
*Ball drop method: automatic ball drop