Influence of Laser Treatment Modes of Cast Iron on the Parameters of Hardening Zones and Their Tribotechnical Properties
The paper considers the results of metallographic and tribotechnical tests of cast iron in friction pairs with 40Kh steel. It is shown that the use of transverse oscillations of the laser beam significantly increases the processing performance, eliminates surface defects that occur when radiation is applied to the surface of cast iron samples with a defocused beam. It is established that laser thermal hardening significantly reduces the coefficients of friction and increases microhardness by 4–6 times and wear resistance of modified cast iron surfaces in 2.5–3.5 times compared to their initial state, depending on the processing modes.
Tags: cast iron coefficients of friction microhardness wear resistance износостойкость коэффициенты трения микротвердость термическое упрочнение чугун
Subscribe to the journal Photonics Russia to read the full article.