T. Babul, A. Nakonieczny, E. Kasprzycka, Institute of Precision Mechanics, Warsaw, Poland; N. G. Kucharieva, National Technical University, Minsk, Belarus; J. Senatorski, Institute of Precision Mechanics, Warszawa, Poland
The paper presents the results of wear tests of cold and hot work tool steels grades: ASTM A681, Ch12M and Ch12FS per GOST, AMS 6437E i BS X46Cr13, all surface hardened by the Carbo process (carburizing) and by the NiCar process (nitrocarburizing). The thermo-chemical treatment was conducted in powder pack for a duration of 6 h (carburizing) and for 4 h in the case of nitrocarburizing.. Wear tests were conducted by the three cylinder-cone method. Wear velocity was 0.58 m/s, unit load was 50 MPa and 400MPa, wear path was 3470 m. Oil SAE30 was applied at the rate of 30 drops per minute. Factors investigated were: morphology, depth and microhardness of the cases obtained, their microstructure, as well as phase composition. Results of industrial exploitations stamps and molds with obtained wear resistance surface layers are presented as well.
The paper presents the results of wear tests of cold and hot work tool steels, all surface hardened by the Carbo and by the NiCar process. The thermo-chemical treatment was conducted in powder pack. Wear tests were conducted by the three cylinder-cone method. Factors investigated were: morphology, depth and microhardness of the cases, microstructure, phase composition. Results of industrial exploitations stamps and molds with obtained wear resistance surface layers are presented as well
