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Gorniy vestnik Uzbekistana

Abstract

In this article, white wear-resistant cast irons of the grades 280H29NL and 300H32N2M2TL are investigated, the chemical compositions and their structures are compared. It has a composition close to eutectic, but is prone to brittle chipping. At high magnifications in the metal base, the places of chipping are found, and where the chipping has not yet passed, gray sulphides are clearly visible. The carbide sizes of the cast irons under investigation vary widely from 8.6 μm to 31 μm.

First Page

99

Last Page

100

References

1. A.A. Zhukov et al. Wear-resistant castings from complex alloyed white cast irons. Moscow .: Engineering, 1984, C. 42-66. 2. Tsypin I.I. White wear-resistant cast irons. Structure and properties. M .: Metallurgy. - 1983 .-- 176 p. 3. Pokrovsky, A. I. Hot plastic deformation of cast iron: structure, properties, technological fundamentals / A. I. Pokrovsky. - Minsk: Belarusian Science, 2010. - 256 p. 4. Carbide Transformations Eutectic Cementite During The Hot Working of Chromium Vanadium Alloid White Irons / P. F. Nich- nicovskaya, T. M. Mironova, Ju .N. Taran et al. - Pittsburg: The Minerals & Metals Society, 1993. 51.

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