Experimental research steel grade «Steel 45» to abrasion wear, depending on the exit angle macrostructure fibers on the contact surface

Abstract

Abstract. This paper describes the experimental research of the influence of the angle of exit of microstructure fibers to the contact surface wear abrasion steel grade «steel 45». The experimental dependence of abrasion wear depending on output angle of macrostructure fibers to the contact surface was obtained (сonsidered angles: 0⁰, 15⁰, 30⁰, 45⁰, 60⁰, 75⁰, 90⁰). A method for obtaining samples with a specified directional fiber structure was development. Two experiments were carried out: on a friction machine of translational type and on a friction rotational type machine. The article shows the difference in wear with different types of friction: rotation motion simulates wear in bearings, translational motion simulates the movement of the piston in the cylinder or the operation of the guides.The effect of the exit angle of the macrostructure fibers on wear is determined. An analysis of the experimental data was carried out and the angles of the yield of fibers on the contact surface were found at which maximum and minimum wear was attained.

The Use of Additive Technologies in the Study of the Process of Cross Wedge Rolling Workpiece for the Stamping of the Crankshaft

“…Cross-wedge rolling (CWR)-is a process of a workpiece forming with the subsequent stamping or a stepped shafts' production of various with diameter drop of 5 or more times with a directed fibrous structure of the macrostructure [1,2]. Fig.…”

Evaluation of the Friction Factor Influence on the Results of Cross-Wedge Rolling Simulation in Qform Software

“…As a result of CWR, material fibers softly pass around protrusions and cavities in the part. Such macrostructure allows to increase performance characteristics of the parts, especially abrasion resistance [1,2] and fatigue durability [3,4].…”