Abstract
The bimetallic mill roller has been produced by the method of vertical axis centrifugal casting. The processes, accompanying the formation of the structure of the external (working) layer from high chromium material of the bimetallic roller have been investigated. A mathematical model for the geometry of the working layer was created. By using the MAGMA Soft software package, simulations of the processes of casting and crystallization have been made. A metallographic assessment of the microstructure has been made.
Highlights
The development of construction worldwide requires the introduction of new characteristics for the materials used in the construction of buildings
In the manufacture of rollers for machines for the ceramic industry through stationary casting, the currently optimal option has been found by using cast iron with a high chromium content and a hardness exceeding 700 HV, and as a result the rollers made of such material has a significantly higher wear resistance than the rollers made of the widespread chilled, chilled spheroidalgraphite and bainitic cast irons, while maintaining the same peripheral speed of 20 m/sec [1,2,3]
In the production of "CENTROMET" JSC, a successfully working prototype of a bimetallic mill roller with a vertical axis of and an external working layer of cast iron with a high content of chromium, was produced
Summary
The development of construction worldwide requires the introduction of new characteristics for the materials used in the construction of buildings. Peter Ivanov, et al Structural Investigation of a High-Chromium Material sed as an External, Working Layer of a Bimetallic Mill Roller processing, an additional requirement is set - the external surface to be in shape and dimensions as close as possible to those of the finished roller. This type of two-layer casting can be accomplished by applying the method of vertical axis centrifugal casting by successive pouring of the melt
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