The purpose of injection of calcium in to liquid steel is to
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Metallurgical Engineering · all questionsSteel Making in Metallurgy
Steel Making in Metallurgy
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Permanent lining in L.D. converters is . . . . . . . . bricks
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Identify the condition that is not beneficial for dephosphorisation of hot metal in an L-Dconverter.
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In L-D steel making, the final slag can be best described as
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Which type of condition is required to remove phosphorus during steel making process?
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Ferritic stainless steels are straight chromium steels containing . . . . . . . . percent chromium.
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In a basic oxygen furnace, under appropriate conditions, which of the following statements is not correct?
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Molten steel is kept in a ladle. Due in natural convection. mixing occurs inside the melt. A 1cm diameter sphere is held in the centre of the melt where the steel flows upward. so as to measure the force exerted by the melt on the sphere. The force. F exerted by the melt on the sphere is given by
Data: Density of liquid steels
= 7100 kg. m-3
Viscosity of liquid steel
= 6.5 × 10-3 kg. m-1. s-1
Reynolds number (Re) of the melt
= 5 × 103
Friction factor (f) = 0.3
The velocity of melt (m.s-1) in the central portion of the ladle would be
Data: Density of liquid steels
= 7100 kg. m-3
Viscosity of liquid steel
= 6.5 × 10-3 kg. m-1. s-1
Reynolds number (Re) of the melt
= 5 × 103
Friction factor (f) = 0.3
The velocity of melt (m.s-1) in the central portion of the ladle would be
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Pick out correct statement/statements
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High quality springs are made from . . . . . . . .
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What are the applications of 436L ferritic stainless steel?
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In a steel pouring ladle, the distance between the top of the ladle and the surface of the contents of the ladle is called
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The purpose of injection of calcium into liquid steel is to
P. replace Al2O3 inclusions by CaO inclusions
Q. modify Al2O3 inclusions into calcium aluminate inclusions
R. reduce sulfur content of steel
S. reduce nitrogen content of steel
P. replace Al2O3 inclusions by CaO inclusions
Q. modify Al2O3 inclusions into calcium aluminate inclusions
R. reduce sulfur content of steel
S. reduce nitrogen content of steel
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What are the casting defects?
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How much time is required for refining steel in acid Bessemer process?
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In continuous casting of steel, the mould is subjected to vertical oscillations in order to
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Reducing condition is carried out in electric arc furnace, with slag
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Identify the correct statement about man-ganese in steels from the following:
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Purpose of alloying of steels are
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VOD process is preferred over AOD process for making extra low carbon stainless steel, because
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