POSCO MAHARASHTRA STEEL Mechanical Operator Interview Questions and Answers

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Q1. Different between Forgings and casting
Ans. 
Forging involves shaping metal through compression, while casting involves pouring molten metal into a mold.
• Forging involves shaping metal through compressive forces, while casting involves pouring molten metal into a mold to solidify.

• Forging typically results in stronger and more durable parts compared to casting.

• Forging is a more precise process that allows for tighter tolerances, while casting is more suitable for c...read more
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Q2. What is the forgings
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Forgings are metal components that are shaped by compressive forces, typically through hammering or pressing.
• Forgings are typically stronger and more reliable than castings or machined parts.

• Common forging processes include open-die forging, closed-die forging, and ring rolling.

• Examples of forged components include crankshafts, connecting rods, and gears.

• Forgings are often used in industries such as automotive, aerospa
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Q3. What is the casting
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Q4. Process in casting
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Process in casting involves pouring molten metal into a mold to create a desired shape.
• Mold preparation is crucial for successful casting

• Molten metal is poured into the mold cavity

• Cooling and solidification of the metal takes place inside the mold

• The casting is removed from the mold and finished as needed
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Q5. Process in forging
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Forging is a manufacturing process where metal is shaped by applying compressive forces using a hammer or press.
• Metal is heated to a high temperature to make it more malleable

• The metal is then placed on a die and struck with a hammer or pressed to shape it

• Forging can be done using different techniques like open-die forging, closed-die forging, and impression-die forging
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Q1. Previous job related questions
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Q1. Milling operation related questions
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Q1. Asked questions regarding family details,
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Q2. How many family members are there in your family?
Ans. 
There are four members in our family
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Q3. Are you a bachelor or married ?
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Q4. What is your wife occupation?
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Q5. How many kids do you have?
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I have two children Girl and a boy.
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Asked questions regarding job profile, job role and equipments and spares we maintain.

Q1. Heat transfer and heat treatment.
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Q2. Gear and gearbox, bearing, nozzles
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Q3. Metal forming process like casting, rolling.
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Q4. About you previous work and responsibilities.
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Q5. If possible then try to gain knowledge about steel and its composition.
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Q1. About previous work and salaries discussion.
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Q1. Total productive maintenance and what are its components
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Total Productive Maintenance (TPM) is a maintenance strategy that aims to maximize equipment effectiveness and minimize downtime.
• TPM involves the entire workforce in the maintenance process

• It focuses on proactive maintenance to prevent breakdowns

• TPM has eight pillars including autonomous maintenance, planned maintenance, and quality maintenance

• TPM aims to improve overall equipment effectiveness (OEE) by reducing downti...read more
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Q2. Environment hazardous and optimization method
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Environmental hazards can be mitigated through optimization methods.
• Optimization methods can help reduce waste and emissions in manufacturing processes.

• Design optimization can lead to more efficient and sustainable products.

• Life cycle assessment can be used to identify environmental impacts and optimize for sustainability.

• Examples of optimization methods include lean manufacturing, Six Sigma, and Design for Environment...read more
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Q3. How phenol removed from water
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Phenol can be removed from water through various methods including adsorption, oxidation, and biodegradation.
• Adsorption involves using activated carbon or other materials to attract and trap phenol molecules.

• Oxidation can be achieved through the use of chemicals such as hydrogen peroxide or ozone, or through advanced oxidation processes like photocatalysis.

• Biodegradation involves using microorganisms to break down phen...read more
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Q4. Cokke density , water consumption for per ton cokke production
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Coke density and water consumption are important factors in coke production.
• Coke density is typically measured in kg/m³ and can vary depending on the type of coke being produced.

• Water consumption for coke production can vary depending on the production process and the quality of the raw materials.

• Efficient use of water in coke production is important for both environmental and economic reasons.

• Coke density and water co...read more
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Q1. Technical discussion on different topics
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Q2. Some questions are asked from previous work experiences and job roles as well
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Q1. Tell me about your most successfuly Engineer project
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