Identify the incorrect statement with reference to L.D. steel making
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Metallurgical Engineering · all questionsSteel Making in Metallurgy
Steel Making in Metallurgy
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The oxidising power of a steel making slag is dependent on the concentration of
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Inclusion free steel are known as
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Determine the correctness or otherwise of the following Assertion(a) and Reason(r):
Assertion (a): Deoxidation and decarburisation of liquid steel are done by vacuum treatment process.
Reason (r): Decreased partial pressure of CO(g) promotes deoxidation and decarburisation.
Assertion (a): Deoxidation and decarburisation of liquid steel are done by vacuum treatment process.
Reason (r): Decreased partial pressure of CO(g) promotes deoxidation and decarburisation.
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What are the basic properties of Cr-Mn Grades stainless steels
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Match the following
| Group 1 | Group 2 |
| P. Aluminium addition | 1. Homogenization |
| Q. Argon stirring | 2. Deoxidation |
| R. Oxygen injection | 3. Decarbunsation |
| S. Calcium carbide injection | 4. Desulfurisation |
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18/8 stainless steel consists of
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If a steel has a to be deoxidised with silicon, manganese and aluminium in the ladle, the preferred sequence of addition is
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In continuous casting of liquid steel, the mould is made of
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What are the uses of medium carbon, low Cr-Mo steels
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What do you mean by basicity
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Necessary condition for removal of sulphur from liquid steel are
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In which year the open-hearth furnace is developed
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Thomas steel making is used when
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The steel which contains carbon percentage up to 0.35 - 0.65% is called
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Manganese recovery insteelmaking is aided by
P. Oxidising slag
Q. Reducing slag
R. High temperature
S. Low temperature
T. Acidic slag
P. Oxidising slag
Q. Reducing slag
R. High temperature
S. Low temperature
T. Acidic slag
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When quenched in water, the structured produced is austenitic provided manganese to carbon ratio in the given Hadfield steel is
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Stainless steel having a similar carbon content becomes least susceptible to intergranular corrosion if it is
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In AOD process of stainless steel making, a mixture of argon and oxygen gas in blown through the bottom because the argon gas
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475°C embrittlement phenomenon is observed when stainless steels are heated into the range of
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