The term is used for character of steel, which become brittle at hot working temperature ie above 0.6 Tm (recrystallization temperature, where strain hardening is removed ) hot short hinders in hot working operation, often caused by the presence of sulphur in metal.
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∙ 14y agoHot shortness in steel, also known as hot short, is a condition where the material becomes brittle and fractures easily at elevated temperatures due to the presence of impurities such as sulfur and phosphorus. These impurities form low-melting point eutectics that weaken the steel's structure, leading to poor mechanical properties. To prevent hot shortness, steel is often refined to reduce the impurity content or alloyed with elements that can counteract the negative effects of these impurities.
The element that causes cold shortness in steel is sulfur. When steel with high sulfur content is cooled rapidly, it becomes brittle and prone to fracturing, a phenomenon known as cold shortness. This makes the steel less suitable for applications that require toughness at low temperatures.
Bad slag in steel metallurgy refers to undesirable impurities or non-metallic inclusions present in the steel. These impurities can negatively affect the mechanical properties of the steel, such as reducing its strength, toughness, or ductility. Managing slag content is crucial in steel production to ensure high-quality end products.
Secondary metallurgy is a process in steelmaking where additional refining treatments are performed on the steel after initial refining in the primary steelmaking process. This step helps to further improve the quality of the steel by adjusting its composition, temperature, and removing impurities. Secondary metallurgy includes techniques like vacuum degassing, ladle refining, and alloying.
Metallurgy is the science and technology of processing metals. Iron and steel production involve metallurgical processes such as smelting, refining, and alloying to create these materials with specific properties for various applications in industries like construction, automotive, and manufacturing.
Metallurgy branches into extractive metallurgy, physical metallurgy, and mechanical metallurgy. Extractive metallurgy involves extracting metals from ores, physical metallurgy focuses on the structure and properties of metals, and mechanical metallurgy deals with processes like shaping, alloying, and heat treatment to improve mechanical properties.
is the steel which breaks as it's heated to red hot
The main reason of hot sortness is sulphur in steel. Therefore, answer of control of hot sortness is to control the sulphur in liquid steel before casting
No, the knowledge of steel metallurgy predates the Hittites. The Hittites were skilled metalworkers and played a role in advancing metallurgy, but the origins of steel production can be traced back to ancient civilizations such as the Mesopotamians and Egyptians.
Louis Emmanuel Gruner has written: 'Etudes sur l'acier' -- subject(s): Metallurgy, Steel 'De l'acier et de sa fabrication' -- subject(s): Metallurgy, Steel 'The manufacture of steel' -- subject(s): Steel, Metallurgy, Bessemer process
Harold E. McGannon has written: 'Metallography' -- subject(s): Metallography 'Metallurgy of steel' -- subject(s): Metallurgy, Steel 'The making, shaping and treating of steel'
Sulfur in steel is considered injurious except when added to enhance machinability. Sulfur readilly combines with iron to form a low melting iron sulphide. Sulfur causes hot shortness in steel unless sufficient manganese is added. Sulfur has a greater affinity for manganese than iron and forms manganese sulphide which has a meltin point above the hot rolling temperature of steel, which eliminates hot shortness. By hot shortness we mean that the steel will literally break apart during hot rolling resulting in a scrapped product
Ernest John Teichert has written: 'Ferrous physical metallurgy' -- subject(s): Metallurgy, Steel, Physical metallurgy, Iron
The element that causes cold shortness in steel is sulfur. When steel with high sulfur content is cooled rapidly, it becomes brittle and prone to fracturing, a phenomenon known as cold shortness. This makes the steel less suitable for applications that require toughness at low temperatures.
Anil Kumar Sinha has written: 'Physical metallurgy handbook' -- subject(s): Handbooks, manuals, Physical metallurgy 'Ferrous physical metallurgy' -- subject(s): Iron, Metallurgy, Steel
Henry Marion Howe has written: 'Metallurgical laboratory notes' -- subject(s): Metallurgy, Laboratory manuals 'Stresses caused by cold-rolling' -- subject(s): Strains and stresses 'The metallurgy of steel' -- subject(s): Steel, Metallurgy
William C. Leslie has written: 'The physical metallurgy of steels' -- subject(s): Steel, Metallurgy
In its steel industry sulfur emissions and CO2 Exhalant of metallurgy are polluting.