Description:
The sponge ball rebound tester is suitable for the determination of soft polyurethane foam falling ball type can rebound resilience. This instrument through a given diameter and the quality of steel ball in the specified height on free falling on the foam sample, calculate the spring back of maximum height of steel ball and ball drop height ratio is the percentage of spring rate, expressed as a resilient rate of foam plastics can rebound resilience.This machine adopts microprocessor to control, LCD Chinese display, and can print test data.The machine is characterized by safety, reliability and high measuring accuracy.
Standard:
This tester is based on ASTM D3574 and iso08307:2007 (soft foam polymeric material - falling ball method test for resilience);GB/ t6670-2008 (determination of rebound energy of soft foam polymeric materials by falling ball method).
Technical parameters
| Ball drop distance | GB/T6670: 460+0.5%mm |
| ISO 8307 and ASTM D3574: 500±0.5%mm | |
| Controller | Touch Screen Control |
| Steel ball diameter | Φ 16±0.05 mm |
| Steel ball mass | 16.7g |
| Bounce rate accuracy | <0.5% |
| Sample size | 100 mm x 100 mm x 50mm |
| Power supply | AC220V/50HZ |
Test Theory:
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The steel ball with a given diameter and mass is free-falling on the foam plastic sample from the specified height. The time of the steel ball bouncing and falling is measured by the photoelectric sensor, and the recoil height of the steel ball is calculated by the microprocessor.
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According to the test method of GB/T6670, the spring back height of each sample was measured for 3 times. The maximum height was selected as the spring back height of this sample, and the average value of the maximum height of 3 times was taken as the spring back height of this material.
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According to the test methods of ISO8307 and ASTM D3574, the spring back height of each sample was measured for 3 times, and the three samples were measured. The average value of 9 spring back heights was taken as the spring back height value of this material.Compared with the falling height of the steel ball, the percentage of this ratio is the rebound rate of the foam plastic.The resilience rate represents the resilience energy of foam plastics.
1.Are your company a trading one or a factory ?
Factory + trade (integration),10 years focusing on test instruments field,3 years exporting experience.
OEM is also acceptable for us.
2.How to choose the most suitable products?
Our professional team will give you the best suggestion as long as you tell us what kind of test you
need to do and the required specification.
3.What’s the delivery term?
At most of time, we have stock in the factory. If there is no stock, normally, the delivery time is 15-20
working days after deposit receipt. If you are in urgent need, we can consider making special
arrangement for you.
4.Do you accept customization service?
Yes, of course, we can not only offer standard machines, but also customized machines according to
your request. Don’t hesitate to tell us your requirement, we will try our best to meet your needs.
5.Can we visit your factory before order?
Yes, we warmly welcome and sincerely invite you or your team to visit our factory, we will help to
arrange hotel and pick up you from airport.
6.Do you have customers of our country before?
Now our testing machines have been sold to more than 26 countries, like USA, Canada, Russia,UK,
Italy, Germany, European Union, India, Pakistan, Philippines, Singapore, Thailand and Vietnam,Iran,
Brazil and so on.
7.How about your warranty?
Generally, our warranty is one year. Within the warranty period, we can offer technique support and
part parts change, necessarily, our engineers may go to your place for better service.
8.How about the packing for machine, is it safely protected during transportation?
Our machine is packed by standard export wooden box, it won’t be damaged. We’ve delivered many
testing machines abroad by sea or by air without damage.
9.What is the order process?
Inquiry - quotation - communication - order confirming - deposit payment - production - testing and
debugging - balance payment - packing - delivery - customer receiving - after service.
10.How to install and use the product
The product is shipped with an operating instructions and video of English version.
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