THE INVESTIGATION OF CHOSEN PROPERTIES OF HIGH DISPERSION PADDING WELDS PRODUCED THE LASER TECHNIQUE OF DESIGNED ON UNITS MACHINE ENGINES ABOUT RAISED RESISTANCE ON WASTE IN THE CONDITIONS OF THE FRICTION
Journal Title: Tribologia - Year 2010, Vol 233, Issue 5
Abstract
The chosen results of laboratory investigations were introduced in the work in the range productions of high disprsion pad welds from nanowires pulveraceous Castolin EnDOtec DO390 N on acid-resistant steel 0 H18 N9 with utilization of the laser technique. The topographies of the surface of grain napoin for the chosen parameters of the laser processing were introduced. Acid-resistant and the material pad weld lies because of specific chemical type- matter, and also large what thermal shock came into being in the process of filling with of the laser the numerous macro was affirmed- and microhardness pad weld. High dispersion pad weld showed the audits of microstructure- and nanostucture in which particles of phaze of carbides (MC) about large volume, the carbides of the forest M23(BC) and borides M2B are disposed in the fine-grained warp irons. Laser layers pad weld because of kilkukrotne melting were affirmed the large differentiation of the chemical composition in microzones and the large inhomogeneity of microstructure. 68-72 HRC carried out the hardness of the surface pad weld. The measurements of microhardness in the transverse section showed very high values carrying out even 990 – 1100 HV0,1. Got results zadawalające are not because of numerous microbroken, that is why you should lead farther laboratory audits over the study of the technology laser micro pad welding ia with the use of pulveraceous nanowires about small diameters (0,6 – 0,8 mm).<br/><br/>
Authors and Affiliations
Wojciech Napadłek, Agnieszka Laber
Keywords
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