학술논문

Selection of the optimal hard facing (HF) technology of damaged forging dies based on cooling time t8/5
Document Type
article
Source
Metalurgija, Vol 55, Iss 1, Pp 103-106 (2016)
Subject
Forging dies
hard facing
cooling time t8/5
hardness
microstructure
Mining engineering. Metallurgy
TN1-997
Language
English
ISSN
0543-5846
1334-2576
Abstract
In exploitation, the forging dies are exposed to heating up to very high temperatures, variable loads: compressive, impact and shear. In this paper, the reparatory hard facing of the damaged forging dies is considered. The objective was to establish the optimal reparatory technology based on cooling time t8/5 . The verification of the adopted technology was done by investigation of the hard faced layers microstructure and measurements of hardness within the welded layers’ characteristic zones. Cooling time was determined theoretically, numerically and experimentally.