How to choose a Wear testing machine

Over the past 100 years, hundreds of wear testing instruments have been developed. Fortunately, it makes sense to work on standardized test procedures and the use of many industry-specific priority Testers. If you're not sure where to start, start reaching out to research industry associations to determine if you want to accept the wear test procedure. Other sources of information include organizations developing testing standards such as ASTM and ISO.

If a method doesn't exist or you decide not to follow industry standards, you need to choose a test model that you want to study wear systems. In a satisfactory case, the test will accurately replicate a wear condition in the intended application, such as a field test. However, due to the complexity of wear, accurate simulations are generally neither realistic nor possible and will have to accept some differences. This is because wearing involves two or more corpses, one or more materials, and relies on a wide range of effects. As a result, experimental development is subject to trial and error and relies on the ability of developers.

The main elements involved in simulating wear systems include equipment design, specimen preparation, test protocols, and measurements. The following describes important characteristics that should be considered:

• motionThis means:Type of wear

• device–The test setup should be a robust design that provides reproducible and reproducible results. Loads, speed parameters, equipment construction, positioning stiffness, and supply of abrasives require adequate control to ensure stable wear conditions.

• Materials involved– Worn architectures include specimens and antibodies (usually some kind of abrasive). Note that different materials can be worn in different situations and can also be affected by the wear and tear of other contacts.

• Abrasive(Anti-abrasive) – Popular types of abrasives include textiles, sandpaper, abrasive, and engineering. While abrasive particles may not be the main cause of actual wear, they are often used to speed up experiments. Abrasive particles, whether they are embedded in the adhesive material or loosen the effect on the wear rate.

1. Angular or "lumpy" shapes can produce up to ten times the wear rate compared to the shape of round particles – particles.
2. The size of the particles is self-evident in its importance, and the smaller particles are less proportional than the larger ones, causing wear.
3. Type – Popular abrasive particles include silicon carbide and alumina. Create a thin scraping pattern with sandpaper, silicon carbide and usually reduce faster due to clearer particles than alumina. Both types can be used as an open or closed coat coat sandpaper. (Open coat to help prevent clogging of the voids and open spaces between the sand particles.) Closed coating abrasive materials such as metallic finishes but easy to clog better. ）
4. Brittleness – how easily the grinding is damaged, the fragments are locally under heat and pressure, creating new sharp edges.

• Contact geometry– Include the shape of the grinding head or abrasive, and contact between it and the specimen. Some systems may require specimen and abrasive "wear" to establish a uniform, stable contact geometry. While point contact eliminates many of the alignment problems associated with geometries of other contacts, stress levels can be used as a development variation for wear, requiring more sophisticated data analysis and comparison techniques.

• Contact pressure(Loading) – With accelerated testing, the load may exceed what is actually seen in the field. This parameter typically includes the force, when the abrasive material is pushed against the specimen in a frictional motion.

• Sliding speed(Sliding velocity) – how quickly the abrasive movement in the specimen is. While the acceleration is desirable in the test, if the speed is too fast for the material (abrasive), the accuracy of the test can be compromised by introducing different phenomena.

• Lubrication condition– Lubrication affects the frictional properties of the material. Formulations that usually involve metals and plastics also include lubricants.

• Preparation of specimens– Specimen preparation and test control with different details of testing and materials. For example, surface roughness, specimen microstructure, geometry, uniformity, and hardness need to be controlled for testing involving metals. Similar control is also necessary for the reverse and abrasion of the resulting medium.

• environment– Many materials are sensitive to changes in temperature and humidity, and changing the test environment can affect the results.

Accurate simulation engineers of wear systems who are concerned about reliability and product life requirements are not uncommon. In contrast, developers looking for material grades for the abrasion resistance of materials can be accepted for a convenient test of not exactly replicated uses. In any case, a well-thought-out wear test can provide an effective incomplete copy of the test data in the application.