Development of a technique to evaluate the performance of cooling headers and its applications in POSCO plate mills
Thermo-Fluid and Process Research Group, POSCO Technical Research Lab., Pohang 790-300, Korea
a Corresponding author: email@example.com
Published online: 28 March 2016
Hundreds of thousands of liquid jet nozzles are widely used in controling cooling equipment to accelerate the cooling of hot plates. The holes of these nozzles become clogged or the hole size becomes smaller as foreign substances like grease, scrap, and mud containing cooling water are flushed through. In this case, cooling water sprays abnormally through the partially clogged or restricted nozzle. This causes inhomogeneous cooling of hot plates. The objective of this study is to develop an evaluation system of cooling headers including nozzles. This paper presents the method to evaluate the conditions of spraying nozzles. The sensor developed in this research measures the liquid column of spraying nozzles using differential pressure between the inside sensor block and ambient air. In addition, the results of a field test in a real, large factory are introduced in this paper.
© Owned by the authors, published by EDP Sciences, 2016
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