Laser cladding of low carbon steel with TiC

Nizkoogljična jekla so jekla s slabšimi mehanskimi lastnostmi. Njihova trdota je zelo nizka, saj je glavna sestava mikrostrukture ferit. Da bi izboljšali njihove obrabne in korozivne lastnosti ter povečali trdoto, uporabljamo razne keramične prevleke. Z uporabo teh prevlek lahko naredimo trden in obrabno odporen strojni del, po relativno nizki ceni. Delo zajema teoretične osnove, kjer so opisani postopki laserskih površinskih obdelav. V eksperimentalnem delu je predstavljeno oplaščanje nizkoogljičnega jekla C10 s TiC z Nd:YAG laserjem. Opisani so postopki merjenja mikrotrdote in zaostalih napetosti. Naloga zajema tudi analizo mikrostrukture in njen vpliv na mikrotrdoto ter v kakšni meri moč laserja vpliva na globino obdelane površine in njeno trdoto. Ugotovljeno je bilo, da je nizkoogljično jeklo primerno za oplaščanje s TiC.Low carbon steels are steels with weak mechanical properties. Their hardness is low, as the main microstructure composition is ferrite. To improve their wear and corrosion properties and to increase hardness, we use various ceramic coatings. Using these coatings, however, we can make a solid and wear-resistant machine part at a relatively low cost. The work covers theoretical basics of laser surface treatment procedures. The experimental work presents coating of low carbon steel C10 with TiC done by Nd:YAG laser. Procedures for measuring microhardness and residual stresses are described. Work also covers the analysis of the microstructure and its effect on the microhardness, and the extent to which the power of the laser affects the depth of the treated surface and its hardness. We have discovered that low carbon steel is suitable for TiC coating