No abstract

This paper analyses the stress distribution of deposited cams by means of finite element method. The modelling of the internal tension state was made as a comparison between two types of cam mechanism configurations: a cam and plane cam follower with metallic coating deposited on the contact surface and cam with metallic coating and plane cam follower. The model used in the simulation was made in Solidworks. The model includes the geometry of the cam and cam follower and their assembly with coatings and the definition of the materials properties. The material properties used are those of 18MnCr11 for the base material and 40Cr130 for the coating. The defined geometric model was imported to the Static Structural module from Ansys 13.

This paper studies the way how a sample with a 40Cr130 coating behaves to contact fatigue wear from the perspective of plastic deformations. The sample is made of an 18MnCr11 alloy steel. The coating was deposited in electric arc using the Smart Arc 350 installation from Sulzer Metco. The samples was subjected to fatigue wear on the AMSLER installation in limit and mixed lubrication conditions. The samples were subjected to wear for 30 hours, at a loading force of 177 N. The moving sample had a rotational speed of 375 rot/min. Different combinations of contact materials were used for the test samples: coating coating and coating base material. The results were highlighted using the QUANTA 200 3D DUAL BEAM electron microscope.