ASTMD3574 Sponge Rebound Tester/Foam Rebound Tester

Sponge/foam plastic ball drop rebound tester -7 inch touch screen

Product name: Sponge foam ball falling rebound tester

PRODUCT MODEL：PMLQ-500

Display mode:touch screen

Manufacturing standards: (GB/T6670-2008 ISO8307 ASTM D3574 ISO8307) Flexible foam polymeric materials Determination of resilience by ball falling method

GBT 10652-2001 Determination of Elasticity of Polymer Porous Elastic Materials

ASTM D3574 Soft Porous Materials - Test Methods for Plate, Adhesive, and Molded Polyurethane Foam

Scope and Function of Application:

Suitable for measuring the drop ball rebound performance of soft polyurethane foam plastics

The instrument automatically calculates the percentage (i.e. rebound rate) of the ratio of the maximum height of the steel ball rebound to the height of the steel ball drop by dropping the steel ball with the diameter and mass specified in the standard on the foam plastic sample at the specified height, and represents the rebound performance of the foam plastic with the rebound rate.

According to the standard testing requirements, each group consists of 3 samples, and each sample is tested three times. The maximum value is taken each time, and the average of the three maximum values is taken to calculate the rebound height and rebound rate. This instrument fully meets the standard requirements, automatically records data and determines the maximum value, calculates the average rebound height and average rebound rate, and can also set numbers and save data for different batches of samples for easy query and management. It can also print the current test data.

This instrument is controlled by Siemens PLC from Germany and operated in Chinese on a 7-inch touch screen. It has the characteristics of easy operation, reliable performance, and high measurement accuracy. It is a reliable sponge resilience testing instrument in China.

ASTMD3574 Sponge rebound instrument/foam rebound instrument

Technical parameters:

01. Steel ball drop height: 460mm (national standard)

500mm (American standard)

02. Steel ball diameter: ￠ 16mm

03. Height conduit: transparent organic glass, inner diameter: ￠ 50MM

04. Precision of ball rebound rate:<1%

05. Tested sample size: length * width * height=100 mm × 100 mm × 100 (50) mm

06. Sample quantity: 3 groups

07. Each group of samples intelligently determines the maximum value and saves it

08. Automatically display rebound height and calculate rebound rate

09. Supports two rebound height reading methods: automatic calculation and manual reading

10. Steel ball release method: automatic release, manual release

11. Host size: L/W/H -500 * 400 * 900mm Control box size: L/W/H-

12. Supply voltage: 220V/50HZ

13. Equipment weight:

14. Placement method: desktop, suitable for operation on the desktop

GBT 10652-2001 Ball Drop Method Rebound Performance Tester

Main configuration:

Model specifications:

PMLQ-500 Drop Ball Rebound Testing Machine

ASTMD3574 Sponge rebound instrument/foam rebound instrument

Automatic reading device:

An instrument that can display the rebound height of steel balls electronically, which has been proven to be the same as the result read manually. The height of rebound can be calculated by the speed of steel ball rebound or the time interval between the first and second contact of steel ball D with the foam surface. The installed electronic equipment should display an accuracy of ± 1% (5mm) of the height, and the pipes of this device do not need to be marked.

Verification steps and result representation:

1. Adjustment of preloading state: the open hole soft foam material shall be adjusted in the preloading state before the test. The method is to compress the sample to 75% to 80% of its original thickness at a speed of 0.4mm/s-6mm/s, pre press twice to adjust the pre stress state of the sample, and then allow a recovery period of 10 minutes ± 5 minutes for the sample.

Note: The pre-stressed state adjustment is not applicable to the closed cell soft foam material mentioned in 3.2.

Test Method A:

1. According to the conditions specified in Chapter 8, start the test immediately after adjusting the state.

2. Place the sample on the reference surface, adjust the height of the tube, and make the zero rebound 16mm ± 0.5mm above the surface of the sample. Fix the tube to ensure there is light contact between the tube and the sample, without causing any visible pressure.

3. Place the steel ball on the release device, then release the steel ball and record the integer value of the maximum rebound height. During the process of the ball falling or rebounding, if it touches the inner wall of the pipe, the test results will be invalid. The main reason for this situation is that the pipe is not vertical or the surface of the sample is uneven. In order to reduce visual errors, the tester's line of sight should be in a horizontal straight line with the rebound reading scale on the pipe. To demonstrate the accuracy of visual proficiency, a trial test is necessary.

4. Each of the three samples should obtain at least three valid rebound values within 1 minute.

ASTMD3574 Sponge rebound instrument/foam rebound instrument

Selection and Precautions of Ball Drop Rebound Tester

1. The difference between electrically releasing steel balls and manually releasing steel balls:

A: Manual release: The principle of manually releasing a steel ball is to use a magnet on the handle to attract the steel ball, and then separate the handle from the steel ball through artificial external force. This will inevitably cause the steel ball to deviate and rotate during the falling process, resulting in collision and deviation from the center when it comes into contact with the sample. Moreover, due to the different operating forces of each person or the same operator, it will also cause errors in the results and affect the success rate of the test.

B: Electric release: The principle of electric release of steel balls is to fix the steel ball perpendicular to the electromagnet and at the center of the organic glass tube. After the electromagnet loses its magnetism and falls freely after being powered off, it rebounds after coming into contact with the sample, greatly improving the efficiency of the test and the reliability of the data. At the same time, it also meets the requirement stipulated in the standard that the steel ball should not rotate and be in the center position when falling.

2. Advantages of both manual and automatic readings:

The accuracy of automatic measurement is relatively high, but if there are errors in the test results due to operational errors or uneven samples, manual readings can be used for comparison, effectively reducing the probability of errors and making the test data more rigorous.

3. Regarding the requirements for the value of the test results of the sample due to the rebound of the falling ball:

In the standard, there is an overview of the test results as follows:Test 3 samples per group, test 3 results for each sample, take the maximum value from the 3 results, and calculate the average of the 3 maximum values as the average rebound rate of the sampleHowever, some manufacturers in the market have failed to understand the requirements of the standard for test results, resulting in unreliable test data. At the same time, customers do not pay enough attention and importance to this issue. We hope to draw your attention to it.

GBT 10652-2001 Ball Drop Method Rebound Performance Tester

after-sale service

After sales service unit: Beijing Guance Jingdian Instrument Equipment Co., Ltd

After sales content:

1、 The product comes with a one-year free warranty and lifetime maintenance from the date of customer acceptance.

2、 Product system software M fee upgrade, experimental functions can be added according to users' special requirements!

Equipment installation and debugging:

The product comes with a one-year free warranty and lifetime maintenance from the date of customer acceptance.

Equipment acceptance criteria:

The user shall conduct acceptance according to the technical requirements of the order. And it meets the requirements of Chinese standards.

Equipment maintenance services:

Our company's products come with a one-year free warranty and lifetime maintenance after passing the on-site debugging and acceptance by the user. During the one-year free warranty period, if there are non-human quality problems with the product, our company provides free repairs for customers. If the product malfunctions outside the free warranty period, the repair service will only charge an appropriate material cost fee.

Technical Support: Ball Drop Rebound Tester

Provide professional technical solutions according to the requirements of users who require the necessary instruments. In addition to conventional instrument services, our company's technical department can also provide technical support for various unconventional equipment for users.

After sales response:

Respond within 2 hours after receiving the user's repair invitation and provide a solution. If the issue is not resolved, our company will assign engineers to promptly arrive at the user's site and resolve the problem until the equipment is used normally.

Paid services:

During the warranty period, paid repair services will be provided for the following situations:

(1) Damage caused by human or uncontrollable natural phenomena

(2) Malfunctions or damages caused by improper operation

(3) Damage caused by incorrect installation of the product and repair by others

The sponge ball rebound tester sold by the company has a strong competitive advantage in the testing machine industry. Through years of continuous research in the industry and adherence to the company's product quality, our company has won unanimous recognition from sponge foam manufacturers. Our company will be guided by the principle of "facing customers and adapting to the market", striving for prices that satisfy customers and product quality that is recognized by customers. GBT 10652-2001 Ball Drop Method Rebound Performance Tester

Adhering to market-oriented approach and committed to providing comprehensive after-sales service, we have established good business relationships with numerous partners. With excellent quality, reasonable prices, excellent service, and good reputation, we have won high praise from small and medium-sized enterprises. The high resilience sponge we provide to our customers has applications in sofas and mattresses

Falling ball rebound modulus tester

The drop ball rebound modulus tester is developed for engineering fields such as highways, railways, water conservancy, airports, bridges, and construction, and can be effectively used in various stages such as design and construction;

Falling ball rebound modulus tester Test object:

Various geotechnical materials such as clay, silt, sand, gravel, and cement stabilized soil

The drop ball rebound modulus tester can quickly test the deformation and rebound modulus of geotechnical materials; It can measure indicators such as rock and soil strength, foundation coefficient K30, CBR, deflection value, dry density, and compaction degree.

JIS K6400-1-2004 Flexible Porous Polymer Materials Measurement of physical properties Part D General Provisions

QB/T 2080-2010 High Resilience Flexible Polyurethane Foam Plastic

QB/T 2819-2006 Determination of Long term Fatigue Properties of Soft foam Materials

At the same time, the instrument supports the database system CI-DBS and can be integrated with the BQIM system to achieve visualization of detection results.

Product Highlights: Ball Drop Rebound Tester

Powerful features: One machine with multiple functions and rich testing content; Meet various current construction design standards;

Reliable performance: a comprehensive theoretical system; High precision and good repeatability; Standardized operation, fully automated parsing, and no human interference; Statistical processing, more scientific and intuitive;

Easy to operate: no system training required; No need for heavy machinery;

Quick and convenient: No need to level the ground before testing; 5-6 measurement points per minute; Compared to traditional methods, the efficiency is improved by hundreds of times;

Widely applicable and not restricted by construction sites;

Easy to operate: dual selection of touch screen and remote control operation, can also be tested by one person, high efficiency

The sponge foam falling ball rebound tester automatically calculates the percentage of the Z-height of the steel ball rebound to the ratio of the steel ball drop height (i.e. rebound rate) by allowing steel balls of standard diameter and mass to fall freely onto the sponge foam plastic sample at a specified height. The rebound rate is used to indicate the rebound performance of the foam plastic.

Manufacturing standard: (GB/T6670-2008 ISO8307 ASTM D3574 ISO8307) Determination of rebound performance of soft foam polymer material by falling ball method

ASTMD3574 Sponge rebound instrument/foam rebound instrument

In the case of conducting experiments 16 hours after production, the state adjustment time may include some or all of the post production placement time.

When conducting quality control testing, the sample can be placed for a short period of time (up to a minimum of 12 hours) after production, and tested according to any of the above environmental regulations using a shorter state adjustment time (up to a minimum of 6 hours).

GB/T 6669-2008 Flexible foam Polymeric Materials Determination of Compressive Y Long Deformation

GB/T 6670-2008 Determination of rebound performance of soft foam polymer materials by falling ball method

GB/T 8810-2005 Determination of Water Absorption of Rigid Cellular Plastics

GB/T 8811-2008 Test Method for Dimensional Stability of Rigid Foam Plastics

Scope of application and functions of sponge foam ball falling rebound tester:

It is suitable for measuring the springback property of soft polyurethane foam

A steel ball with a certain quality and diameter is dropped from a fixed height onto the surface of the specimen, and the height of the steel ball's bounce is measured to calculate the percentage of the ratio of the bounce height to the drop height.

The machine is controlled by a microprocessor, with a Chinese LCD display and the ability to print test data. This machine has the characteristics of safe use, reliability, and high measurement accuracy.

Sponge foam ball falling rebound tester according to ASTM D3574 and

Sampling direction: The rebound direction of the falling ball should be consistent with the actual direction of use.

Designed and manufactured according to GB/T6670-2008, in compliance with ASTM American standard D3574 and ISO 8307 testing standards. It is suitable for measuring the springback property of soft polyurethane foam The instrument calculates the percentage of the ratio between the zui height of the steel ball rebound and the falling height of the steel ball, namely the rebound rate, by which the rebound performance of the foam plastic is expressed. The machine is controlled by a microprocessor, with a touch screen displaying in Chinese and the ability to print test data. This machine has the characteristics of safe use, reliability, and high measurement accuracy.

GBT 10652-2001 Ball Drop Method Rebound Performance Tester

Automatic reading device:

An instrument that can display the rebound height of steel balls electronically, which has been proven to be the same as the result read manually. The rebound height can be calculated by the rebound speed of the steel ball or the time interval between the steel ball D's first contact and the second contact with the foam surface. The installed electronic equipment should show an accuracy of ± 1% (5mm) of the height. The pipes of this device do not need to be marked.

GB/T 10007-2008- Test method for shear strength of rigid foam plastics

GB/T 10652-2001 Determination of Elasticity of Polymer Porous Elastic Materials

GB/T 10808-2006 Determination of Tear Strength of Polymer Porous Elastic Materials

Falling ball rebound tester

Method B, Testing Instruments and Main Parameters:

The same equipment as method A is the foam ball falling resilience tester, which has both manual and automatic value reading equipment. The digital display ball rebound instrument has an accuracy of relative error less than 1.5%. The main parameters are the same as method A, and the steel ball diameter is 16.3g (0.5g lighter than the steel ball in 5.1). The important difference parameter is that the drop height of the steel ball is 460mm ± 0.5mm, which makes it impossible to directly convert the rebound values measured by method A and method B.

23 ℃± 2 ℃, (50 ± 5)% relative humidity;

27 ℃± 2 ℃, (65 ± 5)% want to adjust humidity;

Experimental steps and results indicate:

1. Adjustment of preloading state: the open hole soft foam material shall be adjusted in the preloading state before the test. The method is to compress the sample to 75% to 80% of its original thickness at a speed of 0.4mm/s-6mm/s, pre press twice to adjust the pre stress state of the sample, and then allow a recovery period of 10 minutes ± 5 minutes for the sample.

Note: The pre-stressed state adjustment is not applicable to the closed cell soft foam material mentioned in 3.2.

In the standard, the test results are summarized as follows: each group tests 3 samples, each sample tests 3 results, the maximum value is taken from the 3 results, and the average of the 3 maximum values is calculated as the average rebound rate of the sample. However, some manufacturers in the market have failed to understand the requirements of the standard for test results, resulting in unreliable test data. At the same time, customers do not pay enough attention and importance to this issue. We hope to draw your attention to it.

GB/T 10807-2006 Determination of hardness of flexible foam polymer materials (indentation method)

GB/T 10808-2006 Determination of Tear Strength of Polymer Porous Elastic Materials

GB/T 12825-2003 Polymer porous elastic materials Determination of hardness by indentation method

2、 The following terms and definitions apply to this standard.

2.1 Open cell soft foam material: soft foam material with closed cell volume less than 25%.

2.2 Closed cell flexible foam plastic: A flexible foam material with a closed cell volume greater than 25%.

Principle: A steel ball with a certain mass and diameter is dropped from a fixed height onto the surface of the sample. The height of the steel ball's bounce is measured, and the percentage of the ratio of the bounce height to the drop height is calculated.

GBT 10652-2001 Ball Drop Method Rebound Performance Tester

Method A, Testing Instruments and Main Parameters:

Sponge ball rebound performance tester, including a transparent tube with an inner diameter of 30mm~60mm, a steel ball with a diameter of 16mm ± 0.5mm, a mass of 16.8g ± 1.5g, released by a magnet or other device. During the descent, there was no rotation and it remained in the center position. The falling height is 500mm ± 0.5mm. The distance between the top of the ball and the surface of the specimen should be 516mm. Therefore, the origin of zero rebound is the diameter distance of the steel ball above the surface of the specimen.

If the pipe is not vertical, it may cause measurement errors, and the steel ball will contact the inner wall of the pipe during the falling or rebounding process, rendering the measurement results invalid. Use a spirit level or similar device to calibrate the hard reference surface to ensure levelness, and place the transparent tube and frame vertically.

3、 Manual reading device:

Draw scale lines on the back of the pipe in an orderly manner according to the percentage, with a large scale every 5% (25mm) and a small scale every 1% (5mm), at an angle of 120 ° arc. This complete circular marking is an indispensable and important part of the instrument, which can eliminate parallax errors.

ISO8307:2007 (Determination of rebound performance by falling ball method for flexible foam polymer materials), GB/T6670-2008 (Determination of rebound performance by falling ball method for flexible foam polymer materials) Sponge foam plastic falling ball rebound tester automatically calculates the percentage of the ratio of the maximum height of the steel ball rebound to the height of the steel ball drop on the sponge foam plastic sample at a specified height, using the rebound rate to represent the rebound performance of the foam plastic.

The sponge foam ball rebound tester is controlled by a microprocessor and displayed in Chinese on a LCD screen. It has the characteristics of easy operation, reliable performance, high measurement accuracy, and can print test data.

Technical specifications of sponge foam ball falling rebound tester:

Drop distance of steel ball: 460 ± 0.5% mm (national standard) 500 ± 0.5% mm (American standard)

Steel ball diameter: ￠ 16 ± 0.05 mm drop

Ball rebound rate accuracy:<1.5% Automatic calculation of average rebound debugging Automatic calculation of average rebound rate

Features of sponge foam ball falling rebound tester:

1. It can be used as both a national standard 460 sample and an American standard 500 sample.

2. LCD screen and Chinese display increase the service life while being easy to understand, allowing technicians to quickly master the operation methods.

3. Equipped with printing function, micro printing all-in-one machine.

Test steps of sponge foam ball falling rebound tester: place the adjusted sample horizontally on the test position of the rebound tester, 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.

ASTMD3574 Sponge Rebound Tester/Foam Rebound Tester