Influence of Blowing of Argon on the Cleanness of Steel
Journal Title: Archiwum Odlewnictwa - Year 2012, Vol 12, Issue 3
Abstract
The mechanical properties of steel components are controlled by the chemical composition and mechanical treatment to which the steel is submitted. Non-metallic inclusions have a very high influence on the steel quality but secondary metallurgy enables to reduce their content in the steel. Possibilities of secondary metallurgy are relatively extensive but financial situation in Slovak foundries does not enable to make investments in secondary metallurgy in the near future. Accessible means for influencing of steel quality is injection of an inert gas . Main goal of experiments described in the article was verify the influence of blowing of argon into the steel in an electric induction furnace on its cleanness. Duration and flow-rate of argon blowing have a very clearly influence on the final content of non-metallic inclusions. Minimum time of argon blowing necessary for reducing of content of non-metallic inclusions in one tonne electric induction furnace was more than 6 minutes and recommended argon flow rate was 10 litters per minute.
Authors and Affiliations
A. Pribulova
Keywords
Related Articles
- EP ID EP72790
- DOI 10.2478/v10266-012-0088-8
- Views 93
- Downloads 0
Replies to Challenges in the Field of Air Pollution Control in Foundry Plants
The solution of applications for air pollution control in foundries for iron and non-ferrous metals may not only be understood as the observance of requested emission limit values at the stack outlet. An effective enviro...
The influence of ceramic fibre on thermal expansion of moulding materials for investment casting technology
The results of dilatometric measurements presented in the paper are a supplement to the investigations concerning broadening the composition of ceramic slurry intended for investment casting technology with ceramic fibre...
Effect of alloying elements on branching of primary austenite dendrites in Ni-Mn-Cu cast iron
Within the research, determined were direction and intensity of influence of individual alloying elements on branching degree of primary austenite dendrites in austenitic cast iron Ni-Mn-Cu. 30 cast shafts dia. 20 mm wer...
Gas flow through a multilayer ceramic mould in lost wax foundry process
The paper deals with the issues of permeability testing of ceramic moulds used in lost wax foundry process. The main issue in the testing is to provide proper specimens of ceramic moulds (CM). The moulds have to be repea...
The Decreasing of Die Cracking for HDPC Technology by Changing Parameters of Heat Treatment
In earlier works were described trends in the production of tools for die casting (hot work). Almost the entire set of issues dealt with may seem insignificant when incompletely assembled acceptance of the material and t...