JSW Steel Astt.Manager Interview Questions, Process, and Tips

Cold rolling is a metalworking process that involves passing metal through rollers at a temperature below its recrystallization point.

• Cold rolling is used to reduce the thickness and increase the hardness of metal sheets and strips.

• It is commonly used in the production of automotive parts, appliances, and construction materials.

• The process can be done with various metals including steel, aluminum, and copper.

• Cold rolli...read more

Positive displacement pumps displace a fixed amount of fluid with each stroke while negative displacement pumps create a vacuum to draw fluid in.

• Positive displacement pumps have a fixed displacement volume while negative displacement pumps do not

• Positive displacement pumps are better suited for high viscosity fluids while negative displacement pumps are better suited for low viscosity fluids

• Examples of positive displac...read more

Vernier least count is the smallest measurement that can be made using a Vernier caliper or scale.

• It is the difference between the smallest division on the main scale and the smallest division on the Vernier scale.

• It is used to measure the accuracy of the instrument.

• For example, if the main scale has divisions of 1 mm and the Vernier scale has divisions of 0.1 mm, the least count would be 0.1 mm.

The work roll bearing BEP can be calculated using the formula BEP = (0.5 x (F1 + F2) x L) / (F1 - F2)

• BEP stands for Bearing End Play

• F1 is the force on the roll due to the strip

• F2 is the force on the roll due to the backup bearings

• L is the length of the bearing

• The formula assumes that the forces are evenly distributed across the bearing

Erection and commissioning of pickling line project involves installation and testing of equipment for acid pickling of metal surfaces.

• Designing and engineering of the pickling line

• Procurement of equipment and materials

• Installation and assembly of equipment

• Testing and commissioning of the pickling line

• Training of personnel for operation and maintenance

The lubrication used for backup roll bearing is typically a high-viscosity oil or grease.

• High-viscosity oil or grease is used to ensure proper lubrication and prevent wear and tear on the bearing.

• The specific type of lubrication used may vary depending on the manufacturer's recommendations and the operating conditions of the equipment.

• Regular maintenance and lubrication of backup roll bearings is essential for optimal ...read more