NDLI: Calculation of Fusion Zone Size in the Submerged-Arc Hardfacing of Rolling-Mill Rolls

Content Provider	Springer Nature Link
Author	Matvienko, V. N. Leshchinskii, L. K. Mazur, V. A.
Copyright Year	2016
Abstract	Results are presented from calculation of the dimensions of the fusion zone in the hardfacing of rollingmill rolls by a composite strip electrode. The calculation is performed on the basis of the solution of a differential equation of heat conduction that accounts for the temperature dependence of the thermophysical properties of the material comprising the rolls. Heat propagation in a semi-infinite body undergoing hardfacing is modeled by the finite-element method. The values calculated for the depth of fusion agree well with the experimental data. The calculated results are used to determine the effect of the parameters of the composite electrode on the formation of the weld pool and the conditions necessary to obtain a macroscopically heterogeneous composition with a prescribed hardness distribution across the hardfaced bead (weld). The uneven wear being exhibited by such a heterogeneous hardfaced layer formed on the work roll of a roughing scale-breaker in a wide-strip hot-rolling mill is making it easier to remove scale from the surface of the rolled product.
Starting Page	87
Ending Page	92
Page Count	6
File Format	PDF
ISSN	00260894
Journal	Metallurgist
Volume Number	60
Issue Number	1-2
e-ISSN	15738892
Language	English
Publisher	Springer US
Publisher Date	2016-05-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	rolling-mill roll submerged-arc hardfacing composite strip electrode central and lateral strips angle of rotation of lateral strips gap between strips fusion zone method of calculating the depth and area of fusion weld pool single-pass bead macroscopic heterogeneity hardness profile uneven wear Metallic Materials Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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