CH5-SMS-gpoe

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What is the primary purpose of controlling the flow of metal into the mould through the nozzle?

To prevent sticker formation

To prevent chocking of the nozzle

To ensure center pouring in the mould (correct)

To regulate teeming temperature

What is the consequence of low teeming temperature in ingot casting?

Chocking of the nozzle (correct)

Enhanced surface finish

Sticker formation

Improved yield

What is the primary advantage of continuous casting over ingot casting?

Enhanced yield (correct)

Improved surface finish

Increased production rate

Reduced energy consumption

What is the purpose of the slide gate system in ingot casting?

To control the flow of metal into the mould Signup and view all the answers

What is the primary reason for preparing the moulds again after stripping off the ingots?

To prepare the mould for the next heat Signup and view all the answers

What is the primary purpose of using lime in the converter?

As a flux Signup and view all the answers

What is the primary safety hazard associated with vacuum degassing systems?

Suction of body parts Signup and view all the answers

What is the purpose of argon purging in a ladle furnace?

To stir the metal Signup and view all the answers

What type of bricks are converter vessels usually lined with?

High alumina bricks Signup and view all the answers

What gas is used for slag splashing in the converter?

Nitrogen Signup and view all the answers

What is the primary reason for ensuring the converter is free from liquid slag before charging?

To prevent damage to the converter lining Signup and view all the answers

What is the purpose of slag arrestors in the BOF process?

To minimize slag carryover to the steel ladles during tapping Signup and view all the answers

What is a critical aspect of quality control in the BOF process?

Composition of the slag and its carryover to the steel ladles Signup and view all the answers

What is a potential hazard associated with water leakage in the lance or hood during the blowing process?

Explosion or fire risk Signup and view all the answers

Why is personal protective equipment (PPE) essential for workers in the steel melting shop?

To protect against metal splashes and heat radiation Signup and view all the answers

What is the primary purpose of the deslagging process after blow finish in the converter?

To remove impurities from the steel Signup and view all the answers

What is the primary use of the slag generated during the steel making operation?

As input feed for BF or Sinter Plant Signup and view all the answers

What is the primary purpose of the argon stirring process in Secondary Steel Making?

To achieve the required properties of steel Signup and view all the answers

What is the primary function of the ladle heating system in steel production?

To increase the temperature of the steel Signup and view all the answers

What is the primary purpose of the vacuum degassing system in steel production?

To remove impurities from the steel Signup and view all the answers

What is the primary purpose of the shroud fixed at the bottom of the ladle collector nozzle?

To prevent the liquid steel from coming into contact with the atmosphere Signup and view all the answers

What is the function of the chillers placed on the DUMMY BAR head?

To solidify the liquid steel quickly Signup and view all the answers

What is the significance of monitoring the difference between the MOULD COOLING WATER Outlet Temperature and Inlet Temperature?

To identify potential hazards during the casting process Signup and view all the answers

What is the purpose of spraying casting powder at a certain mould level?

To create a smooth surface finish Signup and view all the answers

What is the role of the turret arm in the casting process?

To hold the ladle in place Signup and view all the answers

What is the primary reason for solidification at SEN, which restricts the steel flow during casting?

Freezing due to low temperature Signup and view all the answers

Which of the following is NOT a type of defect that can occur during casting?

Ladle nozzle blockage Signup and view all the answers

What is the primary method of cutting the product into ordered lengths after straightening?

Mechanical shearing Signup and view all the answers

What is the primary consequence of Chocking during casting?

Restriction of steel flow Signup and view all the answers

What is the primary purpose of mould cooling temperature control during casting?

To maintain a consistent temperature difference Signup and view all the answers

What is the primary function of scrap in the BOF process?

To act as a coolant in the exothermic process Signup and view all the answers

What is the name of the vessel lined with basic refractory in which the reaction takes place?

BOF Converter Signup and view all the answers

What is the approximate tap-to-tap time in the BOF process?

45-50 minutes Signup and view all the answers

What is the primary function of oxygen in the BOF process?

To remove undesirable elements via oxidation processes Signup and view all the answers

Why is the BOF process called 'basic'?

Because of the type of refractory used Signup and view all the answers

What is the primary advantage of the BOF process over other steel purification processes?

Faster smelting time Signup and view all the answers

What is the primary function of the converter in the BOF process?

To achieve compositional adjustments Signup and view all the answers

What is the approximate percentage of carbon in the hot metal used in the BOF process?

4% carbon Signup and view all the answers

What is the primary function of the lance in the BOF process?

To blow oxygen into the converter Signup and view all the answers

What is the significance of the name 'LD' in the BOF process?

It stands for Linz and Donawitz, two cities in Austria Signup and view all the answers

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