Advanced Drilling

Glossary

P

Particle boundary

Refers to the boundary along the particles within the structure.

 

Particle growth inhibitor

Prevents or limits the grain growth in the sintering operation.

 

Plasma electro-discharge

A process that uses electricity to break down the charged particles.

 

Plastic deformation

Plastic deformation is a term used to describe the deformation that remains permanent after release of the stress exerted on it.

 

 

 

R

Re-crystallization temperature

When in the solid state a temperature at which recrystallization takes place.

 

Residual stress

When a body is not exerted to any outside force, the residual stress refers to the internal stresses that remain inside a material after it has been formed.

 

Positioning accuracy

A term that refers to the accuracy of the position of the cutting edge when changed.

 

Post preocessor

A device to convert data into a readable format for CNC machines.

 

ppm order

Parts per million.

 

Precipitation

A chemical process in which a solid substance is separated from a solution.

 

 

 

 

 

 

Retained austenite

Generally at ambient temperatures austenite is not found. However under certain cooling conditions, austenite can be retained in the grain structure.

 

Rib

A thin sectioned wall to support a mould.

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