Improvement in billets quality from billet caster by roller suspension of secondary cooling zone stiffening

Presently, continuous casting machines are widely used in metallurgical industry for production of high quality billets. And the maximum economic and resource-saving effect is achieved by the use of continuously casting small-section billets. Proceeding to the continuous casting has tightened the requirements for product quality and the main objective has become to determine the factors influencing the billet quality. It is necessary to design competently a zone of secondary cooling, for improvement of quality of production. Having changed her design and as a result the loadings operating on a zone of secondary cooling will decrease and the rigidity of a design will increase.

Effect of Continuous Casting Parameters on Quality of Billets Manufactured by UMMC Steel LLC

The analysis of the production records on casting 150õ150mm billets at UMMC Steel LLC has made it possible to define the basic factors worsening the billet quality and increasing the rejection of the rolled materials: steel casting in case the sulfur and phosphorus content exceeds 0.015 % and overheat is more than 30°Ñ. In order to minimize the formation of local nonuniformity in the billets manufactured from low carbon and medium carbon steel, open cast by CCM, it is necessary to maintain a maximum [Mn]:[S] ratio with [Mn]:[Si] ratio at the level less than 2-3, which ensures the formation of fusible deoxidation products and prevents the formation of solid conglomerates in steel. In order to reduce the formation of axial porosity it is advisable to retain the carbon content at the lower limit for the steel grade and avoid overheating of steel above the specified values. In order to minimize the consequences of the overheated steel casting it is necessary to adjust the billet casting rate in accordance with the operating procedures.

Research and Development of Mobile Termination for the Steel Quality Evaluation System Based on Android

According to the requirements of steel billet quality evaluation system application, this paper proposed a system design based on Android mobile terminal, and discussed the Android in the billet quality judging systems mobile terminals development and application combining to Android System features. The paper introduced the whole Android frame and the judging system framework, followed by the mobile terminal system requirements analysis, system design, function module analysis and application interface design. Finally the design used Java language to develop the system in Eclipse, achieved Android data acquisition applications and mobile information management applications.