Ppap Automotive Interview Questions, Process, and Tips

There are several types of moulds used in injection moulding, including two-plate, three-plate, hot runner, and cold runner moulds.

• Two-plate moulds have a stationary half and a moving half that opens and closes to release the part.

• Three-plate moulds have an additional plate that separates the runner and gate from the part.

• Hot runner moulds use a heated manifold to keep the plastic molten as it flows into the mould cavi...read more

Vernier caliper is a measuring tool used to measure the dimensions of an object with high accuracy.

• Clean the jaws and ensure they are parallel

• Close the jaws and check if the zero on the vernier scale aligns with the zero on the main scale

• Open the jaws and place the object between them

• Read the main scale value closest to the object's edge

• Read the vernier scale value that aligns with the main scale value

• Add the main scal...read more

Machining processes involve removing material from a workpiece to create the desired shape and size.

• Common machining processes include turning, milling, drilling, and grinding

• Turning involves rotating the workpiece while a cutting tool removes material

• Milling uses a rotating cutter to remove material from the workpiece

• Drilling creates holes in the workpiece using a rotating drill bit

• Grinding uses an abrasive wheel to r...read more

First angle and third angle are two different methods of representing orthographic projections in engineering drawings.

• First angle projection is commonly used in Europe and Asia, where the object is placed in the first quadrant of the projection plane. The views are obtained by projecting the object onto the planes of projection.

• Third angle projection is commonly used in North America, where the object is placed in the...read more

Types of cutting include abrasive cutting, chipless cutting, and shear cutting.

• Abrasive cutting involves using abrasive particles to cut materials.

• Chipless cutting involves using tools to deform materials without creating chips.

• Shear cutting involves using shear forces to cut materials.

• Examples include laser cutting, waterjet cutting, and guillotine cutting.

There are three main types of lathe operations: facing, turning, and boring.

• Facing: Removing material from the end of a workpiece to create a flat surface.

• Turning: Removing material from the outer diameter of a workpiece to create a cylindrical shape.

• Boring: Enlarging an existing hole in a workpiece.