Equipment and method for carrying out of accelerated comparative tests for wear resistance of steels operating in soil medium

The development of manufacturing, restoration and hardening technologies for parts operating in the soil medium, and above all for structural elements of tillage machines requires preliminary tests of materials in use for abrasive wear resistance. The above-mentioned extends to heat-treated steels. However, the existing methods and devices for carrying out such studies do not allow to cover the whole complex of problems. So, there are no methodologies allowing to carry out accelerated comparative tests of several heat-treated samples simultaneously with different parameters of mode, while maintaining the identity of tests at any time. As a result of considering a number of constructive schemes, a device with five experimental samples mounted on its cylindrical form framework is proposed. The tests are carried out by means of its vertical axis rotation in abrasive medium. The article presents the proposed device as an actual product. A method of experimentation has been worked out for the medium, which is a sandy loam soil with gravel inclusions. The developed method and equipment allow to carry out the wear tests for studying of abrasion resistance of at least five samples of different hardness, for conducting of the research under same conditions for all test materials at any time, for providing the accuracy and comparability of the results.

abrasive wear, thermohardening, comparative tests, accelerated tests, steels, unattached abrasive, wear resistance