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- Title
MOLTEN METAL PHASE DURATION EFFECT ON THE STRUCTURE AND HARDNESS OF HIGH-CARBON FUSED COATING.
- Authors
Savulyak, V. I.; Shenfeld, V. Y.; Postupailo, O. V.; Yanchenko, A. B.
- Abstract
The duration of the molten metal phase in the process of crystallization is an important factor determining the structure of the fused high-carbon coating. The analysis has shown that the duration of the liquid metal phase in a welding bath is a function of the arc travel speed. As the arc travel speed increases, the heat input into the part in question becomes insufficient for a significant temperature rise within the phase transformation area. This results in a reduced molten metal crystallization time and fast generation of the deposited pad, thus creating an alloyed white iron-structured gradient coating. Based on the results achieved and on the curves of relationship of microhardness vs. depth of the deposited layer, we can see that the deposited layer has the maximum hardness at the distance of 1 mm to 1.5 mm from the surface.
- Subjects
LIQUID metals; CARBON; SURFACE coatings; CRYSTALLIZATION; WELDING; TEMPERATURE; METAL crystals
- Publication
TEHNOMUS, 2013, p29
- ISSN
1224-029X
- Publication type
Article