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| I. Kiss, T. Heput, V. Alexa |
| SOME APPROACHES REGARDING THE QUALITY ASSURANCE IN THE CAST-IRON ROLLS MANUFACTURING |
Abstract
The technical conditions, which are imposed to the cast-iron rolls in the exploitation period, are very different and often contradictory. The obtaining of various physical and mechanical properties in the different points of the same foundry product meets difficult technological problems in the industrial condition. One of the parameters, which determine the structure of the irons destined for rolls casting, is the chemical composition. If we not respect this composition, which guaranties the exploitation properties of the each roll in the stand of rolling mill, it will lead to rejection. Alloying elements have in principle the same influence on structure and properties. It is presented, in graphical form, the influence of the main alloying elements upon the hardness, and measured on the necks and the core of the rolls, respectively on the working surface (body) of these very important rolling mill components The realization of an optimal chemical composition can constitute a technical efficient mode to assure the exploitation properties, the material from which the rolling mills rolls are manufactured having an important role in this sense.
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| Keywords: cast-iron|rolls|alloying|hardness|casting|technology|BSI Quality Assurance |
| No 1 (2010), p. 42-49 |
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