Rashmi Metaliks Interview Questions, Process, and Tips

Very good test, written examination

Q1. 1)What is DRI?Full form
Ans. 
DRI stands for Direct Reduced Iron, a type of iron produced from the reduction of iron ore.
• DRI is produced by removing oxygen from iron ore without melting it.

• It is used as a substitute for scrap in electric arc furnaces.

• DRI is also used as a feedstock in the production of steel.

• The process of producing DRI is known as the direct reduction process.

• DRI is also known as sponge iron.
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Q2. 2)what are the 3 main raw materials in the production of iron and steel?
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Q3. 3) what is blast furnace? BF gas reaction.
Ans. 
Blast furnace is a type of furnace used for smelting to produce industrial metals. BF gas reaction produces carbon monoxide.
• Blast furnace is used for smelting iron ore into pig iron.

• It is a tall cylindrical structure made of steel and lined with refractory bricks.

• The BF gas reaction produces carbon monoxide, which is used as a fuel in various industries.

• The process involves the reduction of iron ore with coke and limes...read more
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Q4. How many type of iron ore are there in india?
Ans. 
There are several types of iron ore found in India.
• Hematite is the most abundant and widely found iron ore in India.

• Magnetite is another important iron ore found in India.

• Limonite, Siderite, and Iron Pyrites are other types of iron ore found in India.

• India is one of the largest producers of iron ore in the world, with an estimated 2020 production of 206 million metric tons.
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Q5. What is steel? Composition of steel.
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Steel is an alloy of iron and carbon, with small amounts of other elements.
• Steel is a widely used material in construction, manufacturing, and transportation industries.

• The carbon content in steel can range from 0.2% to 2.1% by weight.

• Other elements such as manganese, chromium, and nickel are often added to improve the properties of steel.

• Different types of steel are produced by varying the composition and processing m...read more
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Q6. What is the melting point of iron and atomic number?
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The melting point of iron is 1538°C and its atomic number is 26.
• Iron has a high melting point of 1538°C.

• Its atomic number is 26, which means it has 26 protons in its nucleus.

• Iron is a transition metal and is commonly used in construction and manufacturing.
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Q7. Explain Heat treatment process.what are the 3 stages of heat treatment process?
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Heat treatment is a process of heating and cooling metals to alter their physical and mechanical properties.
• The three stages of heat treatment are heating, soaking, and cooling.

• Heating is done to a specific temperature depending on the metal and desired outcome.

• Soaking is the holding of the metal at the desired temperature for a specific amount of time.

• Cooling can be done rapidly or slowly depending on the desired outc...read more
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Q8. What is the highest temperature in blast furnace? Why is called bf?
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The highest temperature in blast furnace is around 2300°F. It is called bf because it is used to produce pig iron.
• The temperature in blast furnace can reach up to 2300°F

• It is called bf because it is used to produce pig iron

• The process involves heating iron ore, coke, and limestone in a furnace

• The coke burns to produce carbon monoxide, which reacts with the iron ore to produce molten iron

• The limestone reacts with impuri
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Q9. What is slag? What fuel is used in blast furnace?
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Slag is a byproduct of metal smelting process. Coke is used as fuel in blast furnace.
• Slag is a glass-like byproduct of metal smelting process

• It is formed when impurities in the metal ore combine with flux to form a molten mixture

• The mixture is then cooled and solidified to form slag

• Coke, a form of coal, is used as fuel in blast furnace to produce high temperatures needed for smelting

• Coke burns with a high intensity and...read more
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Q10. What is tempering, explain some purpose.
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Tempering is a heat treatment process used to improve the toughness and ductility of metals.
• Tempering involves heating a metal to a specific temperature and then cooling it down slowly.

• The purpose of tempering is to reduce the brittleness of the metal and increase its toughness and ductility.

• Tempering is often used after a metal has been hardened to make it more workable.

• Examples of metals that are commonly tempered in
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Q1. What is TTT DIAGRAM and its use
Ans. 
TTT diagram is a Time-Temperature-Transformation diagram used in materials science to understand the transformation of phases in a material.
• TTT diagram shows the relationship between temperature, time, and phases in a material during cooling or heating.

• It helps in predicting the microstructure and properties of a material based on its cooling rate.

• TTT diagrams are commonly used in heat treatment processes for metals li...read more
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Q2. What is difference between ceramic and steel
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Ceramic is a non-metallic material made from clay, while steel is a metallic material primarily made from iron and carbon.
• Ceramic is non-metallic, while steel is metallic

• Ceramic is made from clay, while steel is primarily made from iron and carbon

• Ceramic is typically more brittle than steel

• Steel is stronger and more durable than ceramic

• Ceramic is often used for decorative purposes or in high-temperature applications, w...read more
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Q3. What is fatigue and what is creep in materials
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Fatigue is the weakening of a material due to repeated loading, while creep is the gradual deformation of a material under constant stress.
• Fatigue is the process of progressive and localized structural damage that occurs when a material is subjected to cyclic loading.

• Creep is the time-dependent deformation of a material under constant load or stress.

• Fatigue failure is often characterized by crack initiation and propaga...read more
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Q4. What are the different types of Steel making
Ans. 
Different types of steel making include basic oxygen furnace, electric arc furnace, and open hearth furnace.
• Basic Oxygen Furnace (BOF) - uses oxygen to reduce the carbon content in the steel

• Electric Arc Furnace (EAF) - uses electricity to melt scrap steel and produce new steel

• Open Hearth Furnace - uses a fuel-air mixture to heat the steel and remove impurities

• Other methods include Bessemer process, direct reduced iron,
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Q5. Why do we use alloying elements during Steel making and what are their applications
Ans. 
Alloying elements are used in steel making to improve properties like strength, hardness, corrosion resistance, and machinability.
• Alloying elements are added to steel to enhance specific properties such as strength, hardness, toughness, and corrosion resistance.

• Common alloying elements include chromium, nickel, manganese, molybdenum, and vanadium.

• Chromium is added to improve corrosion resistance, nickel for toughness, ...read more
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Q6. What is SN curve ?
Ans. 
SN curve is a graphical representation of the relationship between stress and fatigue life of a material.
• SN curve shows the number of cycles to failure (N) against the applied stress (S).

• It helps in determining the fatigue life of a material under different stress levels.

• Materials with higher fatigue strength have a steeper slope on the SN curve.

• SN curves are commonly used in engineering to predict the durability of ma
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Q7. What is the composition of pigiron
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Pig iron is an intermediate product of the iron industry, made by smelting iron ore in a blast furnace.
• Pig iron is typically around 92-94% iron, with varying amounts of carbon, silicon, manganese, sulfur, and phosphorus.

• It is brittle and not suitable for use in its raw form, but can be further processed into wrought iron or steel.

• The carbon content of pig iron gives it a high carbon equivalent, making it ideal for cast...read more
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Q8. What is lever rule?
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Lever rule is a principle used in material science to determine the relative amounts of two phases in a two-phase system.
• Lever rule is used to calculate the fraction of each phase in a two-phase system based on the weight or volume percentages of the phases.

• It is commonly used in metallurgy, ceramics, and other material science fields.

• The lever rule equation is: L = (C - A) / (B - A), where L is the fraction of one pha...read more
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Q1. Coal starvation?
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Q2. Hood temperature rise reason?
Ans. 
Hood temperature rise can be due to factors such as increased heat production, poor ventilation, or malfunctioning equipment.
• Increased heat production from cooking appliances or other sources

• Poor ventilation causing heat to accumulate in the hood area

• Malfunctioning equipment such as a faulty exhaust fan or blocked vents

• High ambient temperature in the kitchen area
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Q1. What is your salary?
Ans. 
I am currently earning a competitive salary based on my experience and qualifications.
• My salary is based on my experience and qualifications

• I am currently earning a competitive salary

• I am open to discussing salary expectations during the interview process
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Q2. How much salary expectation?
Ans. 
Salary expectation is negotiable based on the responsibilities and benefits offered.
• Salary expectation is based on the responsibilities of the position.

• Consider the benefits package offered by the company.

• Research industry standards for Deputy Manager salaries.

• Be prepared to discuss your salary range during the interview.

• Negotiate based on your experience and qualifications.
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Q1. What is thermocouple
Ans. 
A thermocouple is a temperature sensor that consists of two different metals joined together to create a voltage proportional to the temperature difference.
• Consists of two different metals joined together

• Generates a voltage proportional to temperature difference

• Commonly used in industrial temperature measurement applications
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Q2. What is rtd
Ans. 
RTD stands for Resistance Temperature Detector, a sensor used to measure temperature by correlating the resistance of the RTD element with temperature.
• RTD is a type of temperature sensor that operates on the principle that the electrical resistance of a metal changes predictably with temperature.

• Platinum RTDs are commonly used due to their high accuracy and stability.

• RTDs are used in various industries including automo...read more
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