Sponge foam ball falling rebound tester

Product: HMLQ-500 sponge foam ball falling rebound tester

1、 Manufacturing standard of sponge foam ball falling rebound tester:
(GB/T6670-2008 ISO8307 ASTM D3574 ISO8307) Flexible foam polymeric materials Determination of resilience by ball falling method

2、 Scope of application and functions of sponge foam ball falling rebound tester:
It is suitable for measuring the springback property of soft polyurethane foam The springback tester of sponge foam plastic drops a steel ball with the diameter and mass specified in the standard on the foam plastic sample at the specified height, automatically calculates the percentage of the ratio of the zui height of the steel ball springback to the falling height of the steel ball (i.e. the springback rate), and shows the springback performance of the foam plastic with the springback rate. The falling ball springback tester for sponge foam plastic is controlled by a microprocessor, and the LCD screen displays Chinese operation. It has the characteristics of convenient operation, reliable performance, high measurement accuracy, and can print test data.

3、 Technical parameters:
1. Steel ball drop height: 460mm (national standard)
500mm (American standard)
2. Steel ball diameter: ￠ 16mm
3. Precision of ball rebound rate:<1%
4. Tested sample size: length * width * height=100 mm × 100 mm × 100 (50) mm
5. Automatically calculate the average rebound height
6. Automatically calculate the average rebound rate
7. It is suitable for measuring the falling ball resilience of soft polyurethane foam.
8. Meet the testing methods of Method A and Method B in the 08 standard. It mainly tests the resilience of plastic foam materials and sponge materials.
9. The measurement accuracy of the rebound of the falling ball is high, controlled by a microprocessor, displayed in Chinese, and the test data can be printed.
10. The springback of falling ball is to calculate the percentage of the ratio between the zui height of the steel ball springback and the falling height of the steel ball, namely the springback rate, by the steel ball with a given diameter and mass freely falling on the foam plastic sample at a specified height, and the springback rate is used to express the springback performance of the foam plastic.
11. Main configuration:
1. One experimental host
2. One intelligent LCD control operating system
3. Two sets of steel ball release mechanisms (1 set of manual release mechanism and 1 set of automatic release mechanism)
4. A set of steel ball capture mechanism
5. One set of height adjustment mechanism
6. A set of precision photoelectric sensors
7. 4 steel balls
8. One micro printer
9. A group of horizontal calibration institutions
12. Experimental steps:
Place the adjusted sample horizontally on the test position of the rebound instrument, and make the drop height of the steel ball bottom from the fixed position to the foam plastic surface 460mm through adjustment. Fix the steel ball on the release device, and then make the steel ball fall freely. Perform three rebounds on each sample and take the maximum value from the three rebounds. Each rebound of the steel ball should fall onto the same position on the surface of the specimen, and the time interval between two rebounds should be controlled within 20 seconds. If the steel ball touches or pops out of the measuring device during the rebound process, the obtained data is invalid and needs to be re made.