Studies and researches concerning the determination of thermal treatment of the adamit type hypereutectoide steel, on cast samples

Josan, Ana and Pinca Bretotean, Camelia: Studies and researches concerning the determination of thermal treatment of the adamit type hypereutectoide steel, on cast samples. Review of faculty of engineering : analecta technica Szegedinensia 1-2. pp. 97-101. (2011)

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Abstract

In this paper are presented lab experiments done on the purpose of determination of the thermal treatment technology (with the purpose of obtaining some corresponding hardness and their use in the production practice) and mechanical characteristics of the hypereutectoid steel, Adamite type, intended for casting the mill rolls. Samples have been taken out of three charges, out of which four rolls have been cast at metallurgical company. The test assays to determine the characteristics of the material have been done at the Engineering Faculty of Hunedoara. Diagrams of thermal treatment applied to the mill rolls of Adamit type steel and cast sampled are presented, as well as the hardness values registered. The application of thermal treatments in the case of the mill rolls cast of hypereutectoid steel has a multiple character, respectively: eliminate the internal tensions which have very high values; decrease the hardness obtained at casting (370...400HB), till the values between the interval 280...300 HB, in view to increase the processing by splinting; correct the primary structure by destroying the cementite network, increase of the pearlite grains and its fineness in order to assure the imposed mechanical properties and especially the growth of the rolls face (not only in the superficial stratum but also in depth) at values of 380...420 HB.

Item Type: Article
Journal or Publication Title: Review of faculty of engineering : analecta technica Szegedinensia
Date: 2011
Number: 1-2
Page Range: pp. 97-101
ISSN: 1788-6392
Language: angol
Uncontrolled Keywords: Mérnöki tudományok
Additional Information: Bibliogr.: p. 100-101. ; összefoglalás angol nyelven
Date Deposited: 2016. Oct. 15. 12:24
Last Modified: 2019. Jan. 04. 12:31
URI: http://acta.bibl.u-szeged.hu/id/eprint/11882

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