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- Title
INVESTIGATION OF THERMAL RESISTANCE OF DEPOSITED METAL DESIGNED FOR RESTORATION OF MILL ROLLS.
- Authors
BABINETS, A. A.; RYABTSEV, I. A.; KONDRATIEV, I. A.; RYABTSEV, I. I.; GORDAN, G. N.
- Abstract
The method of experimental evaluation of thermal resistance of deposited specimens was updated. The new method allows evaluating the nature of propagation of thermal fatigue cracks across the thickness of deposited layer, as well as the effect of deposition of intermediate layers of different composition on thermal resistance of specimens. Using the updated procedure, the investigations of effect of deposition of a plastic sublayer by wire Sv-08A on thermal resistance of specimens, deposited by flux-cored wires PP-Np- 35V9Kh3GSF and PP-Np-25Kh5FMS, which are most widely used for restoration and strengthening of hot mill steel rolls, were carried out. Hardfacing of the plastic sublayer allowed increasing the general thermal resistance of deposited specimens by 1.2-1.5 times. In addition, it was found that the plastic sublayer arrests the propagation of thermal fatigue cracks into the base metal, thus preventing, to a certain degree, the fracture of the deposited part.
- Subjects
THERMAL properties of metals; EFFECT of temperature on metals; MATERIAL fatigue; STRENGTH of materials; THERMAL resistance
- Publication
Paton Welding Journal, 2014, Issue 5, p16
- ISSN
0957-798X
- Publication type
Article
- DOI
10.15407/tpwj2014.05.03