DOI: 10.18503/1995-2732-2020-18-2-22-29
Abstract
Problem Statement (Relevance): The paper deals with features of casting pipeline valve body parts made of corrosion-resistant steel 12Kh18N9TL. It lists main disadvantages of mold steel and the defects often detected in body part castings. A high level of defects is stated to be attributed to stainless steel castings. Objectives: The objectives of the paper is to show main problems of body part castings made of 12Kh18N9TL steel and determine ways to improve their quality. Originality: The authors studied how a chemical composition and the steel production process parameters influenced the quality and the properties of pipeline valve body part castings. The chemical composition is stated to play an important role in forming the quality and the properties of steel castings. The paper describes the factors influencing the fluidity of steel. Findings: As a result, the authors plotted the graphical diagrams showing dependencies between the titanium recovery in a ladle and steel temperature, between ductile properties of steel and the concentration of titanium, aluminum and the ferrite phase, and between the quality of castings and steel overheat temperature. Practical Relevance: The obtained results may be recommended to the enterprises engaged in the production of shaped castings made of austenitic corrosion-resistant steel 12Kh18N9TL.
Keywords
Pipeline valves, corrosion-resistant steel, austenitic structure, fluidity, overheat temperature, casting.
For citation
Ramazanov A.K., Ganeev A.A. Features of Casting Pipeline Valve Body Parts Made of Corrosion-Resistant Steel 12KH18N9TL. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2020, vol. 18, no. 2, pp. 22–29. https://doi.org/10.18503/1995-2732-2020-18-2-22-29
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