ASTM D5963, EN ISO 20344, ISO 4649, DIN 53516, SATRA METHOD 174
GenDin is designed to conform to the ASTM, EN, IS0 and DIN standards. This top quality and highly popular abrasion tester will allow you to measure the abrasion resistance of rubbers (vulcanized thermo set rubbers and thermoplastic elastomers) that are subject to abrasive/frictional wear on their actual service. Since wear is always a result of abrasion, different test methods have been developed for the simulation of long-term wear.
DIN Abrasion Testing Operation
DIN Method according to ISO 4649 Method 1 (without specimen rotation)
The method conforming to ASTM D5963 / ISO 4649 has proven to be the best way of simulating long term wear. This method enables comparative tests for the control of the uniformity of a specific material. The achieved test results provide important parameters with respect to the wear of elastomers in practical use. The abrasion resistance is measured by moving a test piece across the surface of an abrasive sheet mounted to a revolving drum, and is expressed as volume loss in cubic millimeters or abrasion resistance index in a percentage. Learn more about the significance of DIN Abrasion Testing.
|Load||2.5±0.1N; 5±0.1N; 10.0±0.2N|
|Specimen Size||Diameter 16mm, thickness 6-16mm|
|Rotating Drum Diameter||150mm|
|Rotating Drum Speed||40 ±1RPM|
|Emery Cloth Specification||60 #, 425 ±473 ±1.5 (mm)|
|Testing Length||40M (about 84 rotations)|
|Horizontal Displacement||4.2mm / rotation|
|Test-Arm Weight||250 ± 5 (g)|
|Shift Screw||6 teeth / inch|
|Limit Rotation||85 rotations|
|Set Rotation||84 Rotations (about 40M)|
|Return Form||Automatic Electric Reset|
|Power||110V/60Hz or 220V/50Hz|
|Machine Dimensions (W x D x H)||70 x 30 x 30 (cm)
27.55 x 11.80 x 11.80 – inches
|Machine Weight||61 kg / 134 lbs|
GenDIN can be purchased with a full scope of DIN Abrasion consumables for your current and long-term needs. The consumables include abrasive paper, circular cutting device, standard rubber slabs, additional 10N loading weights and more. You purchase your DIN consumables with or after the order of the main instrument. Additionally, NextGen often offers special consumables bonus incentives. Ask us for our best consumables offer by request quotation today.
A wide variety of industries use DIN abrasion methods for testing their products. These include the following industries and sectors: leather, textile, clothing, automotive, rubber, aerospace, rubber rollers, bearings and seals, R & D facilities, and rubber and plastic manufacturers, among many others.
Typically, these industries break into sub-industries that range from small, medium, to large-sized companies. Many of them use the DIN abrasion testing methods on a consistent basis as part of their quality control measures.
Depending on the application, the results of DIN abrasion testing are quite useful. In particular these are beneficial to manufacturers and designers of rubber products. Rubber abrasion tests are good indicators of the performance and quality of the material.
For designers, the data culled from the results can provide much help in their research efforts. Likewise, they can use the information for checking for the efficiency of the product. On the other hand, manufacturers can make use of the results to help develop better and higher quality products. finally, end-users get the assurance that the products they will use are made from superior and high quality materials.
Three test pieces are cut from various positions of the material with a diameter of about 16 mm with a + or - 0.2 mm allowance and thickness of about 6.0 - 10 mm using a tubular drill.
The piece of test specimen must be parallel to the bottom and top. The round of flank must be vertical to either side, which is in the column's shape.
Note: if the test piece thickness is less than 6.0 mm, another rubber test piece with a hardness of 65 HA must be taken in a similar way, and sticks to the test piece using universal glue. This is to guarantee the thickness of a minimum of 6 mm.
The number of test pieces must be at least 3 pieces taken from each type of material. Instrumental correction: After testing for 10 times, the instrument must be corrected using a standard rubber. It should be done in accordance to the following:
First, a standard rubber must be tested for three times. Its mean is indicated as S. The results are correct when the standard rubber wear mean is around 200 + or - 20 mg. If the results read more than 220 mg, it means that the sandpaper is too sharp and it needs to be readjusted.
Put the iron of the same size as the test specimen, then rub the rubber until it becomes less than 220 mg in size. If it achieves a size of under 180 mg after wearing, the sandpaper needs to be replaced because apparently, it is a bit too blunt.
Note: if the wears in the test piece have a variance of over 15 mg, then the specimen must be abandoned, and retesting must be done.
In general, these two methods of abrasion testing require similar specifications for the DIN abrader. However, the most obvious difference between the two is that ISO 4649 cites two methods for abrasion test - rotating or non-rotating. On the other hand, DIN 53516 doesn't have any clear requirements for the same. But, the two standards are capable of determining abrasion resistance in rubber.
Based on industry standards, the ideal sandpaper for use on the rotary drum is around 60#. The abrasive is rather coarse, and will result to a high volumetric loss.
When looking at the results of abrasion tests, it is very important to remember one thing: the higher figures are indications of a greater surface rubber loss. The higher the figure, the bigger the loss. This means that resistance to abrasion is lower. On the other hand, a lower figure is an indication of better resistance to wear.
A single belt that has good abrasion resistance can usually perform much longer and more efficiently than say, 2 or even 3 "economy" belts of lower grade or quality.
Following is the detailed procedure for DIN abrader testing.
The following formula is used:
Abrasion = mass loss x abrasiveness x 200 specific weight
Rubber is a very elastic and versatile material. It is the material of choice in production verticals because of the different properties it has. The material is used to manufacture industrial products, domestic products, toys, and accessories, among others.
Rubber comes from the rubber plant. However, the rubber material taken from plants is quite soft by nature, and is not suitable for use in industrial applications. It cannot be molded into different shapes and sizes. The rubber material is hardened through the vulcanization process.
This is where abrasion testing comes in. The produced rubber material is tested to make sure it is durable enough for use as a material for manufacturing various products.
Abrasion testing is performed on materials that abrade or wear off over time. Some examples of these materials are belts, tires, shoe soles, and conveyor belts, among others.
In a DIN abrasion test, the specimen is secured into a sample holder (quick clamp), and then guided in a precise manner, with or without rotation, over a predetermined distance of either 20 m or 40 m. There is also a given load on a piece of abrasive paper that is mounted to a 150 mm diameter stainless steel rotary drum. The drum turns at a speed of around 40 rpm. Ultimately, the frictional loss is computed by comparing the weight of the test specimen before and after the test.
The rotary drum-type DIN abrasion tester performs test in compliance with DIN ISO 4649, D53516, ASTM D 5963, and AS1683.21.
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