Antoniuk D. Increasing of roadbulding machines work parts wear resistance

Abrasive wear process laws and increasing of road mills working body wear resistance are the research objects. Research of mechanism and features of materials wear process under operating conditions of road mill cutter, and also increase of its wear resistance by optimisation of its geometrical form and choice of rational operation modes, wearproof alloy parametres and technology of its drawing are the purpose of the work. Methods used in the work are statements of modern theories of tribotechnics, strength resistance of materials, welding and depositing processes, material engineering; experiments mathematical planning, analysis, special methods of materials wear resistance determination. For the first time at various speeds of relative moving the mechanism of cutter body wear process is defined, it occurs as a result of material surface destruction by the fixed abrasive domination as well as because of the separated from a monolithic abrasive particles influence. A regressive model of Fe-C-Ti-B system alloys chemical compound influence on materials tribotechnical and physicomechanical properties in the conditions of wear by the fixed abrasive is built. Picularities of abrasive relative moving speed, wearing out environment pressure and temperature influence on wear resistance under road mill working bodies operating conditions are defined. The results of work can be used at enterprises engaged in highways building and repair and in educational process.