Spark Minda Production Engineer Interview Questions and Answers

High pressure die casting is a metal casting process in which molten metal is injected into a mold cavity under high pressure.

• Molten metal is injected into a mold cavity under high pressure

• The mold is made of two halves and is designed to create a specific shape

• The process is used to create complex shapes with high accuracy and surface finish

• Commonly used for manufacturing automotive parts, aerospace components, and consumer goods

DFT in painting stands for Dry Film Thickness.

• DFT is the thickness of the paint film after it has dried.

• It is measured using a coating thickness gauge.

• The DFT is important for ensuring proper protection and appearance of the painted surface.

• For example, a coating may require a minimum DFT of 2 mils to provide adequate corrosion protection.

• DFT can also affect the drying time and curing of the paint.

Excess DFT can lead to increased cost and longer production time.

• Excess DFT can lead to increased material usage and waste.

• It can also lead to longer production time and increased cost.

• The excess DFT may also affect the performance and durability of the product.

• It is important to ensure that the DFT is within the specified range to avoid these issues.

Overall Equipment Effectiveness (OEE) is a measure of how effectively equipment is being utilized to produce quality products.

• OEE is calculated by multiplying availability, performance, and quality rates.

• Availability rate measures the percentage of time the equipment is available for production.

• Performance rate measures the speed at which the equipment is producing products compared to its maximum capacity.

• Quality rate measures the percentage of products that meet the require...read more

Thermoplastics can be melted and reshaped multiple times, while thermosets undergo a chemical reaction during curing and cannot be reshaped.

• Thermoplastics can be melted and reshaped multiple times, while thermosets undergo a chemical reaction during curing and cannot be reshaped.

• Thermoplastics are typically used in products like plastic bags, bottles, and toys, while thermosets are used in products like car tires, electrical insulation, and adhesives.

• Thermoplastics have linea...read more

Cycle time is the time taken to complete a task while takt time is the time available to complete a task.

• Cycle time is the total time taken to complete a process, including both processing and waiting time.

• Takt time is the rate at which a product must be produced to meet customer demand.

• Cycle time should be less than or equal to takt time to meet customer demand.

• For example, if a company has a takt time of 60 seconds and a cycle time of 50 seconds, they are meeting customer d...read more

Types of defects in parts and troubleshooting methods

• Types of defects: dimensional inaccuracies, surface imperfections, material flaws, assembly errors

• Troubleshooting methods: conducting inspections, using measurement tools, adjusting manufacturing processes

• Example: Dimensional inaccuracies can be troubleshooted by calibrating machines and tools

Glass filled polymer is a composite material made by mixing glass fibers with a polymer resin, resulting in a stronger and more durable material.

• Glass filled polymers have improved strength, stiffness, and heat resistance compared to regular polymers.

• They are commonly used in automotive parts, electronic housings, and industrial components.

• Examples include glass filled nylon, glass filled polypropylene, and glass filled polyester.