This paper describes the experimental study and modeling of the process of cross wedge rolling workpiece for the stamping of the crankshaft using a tool printed on a 3D printer. The study shows the design and printing features of the tool for cross wedge rolling. A comparison of the experiment and simulation in Qform program.
The paper describes the study of the friction factor influence on a workpiece shape-changing and the defects occurrence during the cross wedge rolling. The dependence between the slipping rate and the friction factor is found. Recommendations on the choice of friction scheme and friction factor values are provided.
This paper describes QForm computer simulation of a large-sized blade preform shaping, using cross-wedge rolling. Scenarios of friction consideration between the workpiece and the tool are examined.
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.
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