Manufacturing And Production Technology
Lapping is an operation of

Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole

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Manufacturing And Production Technology
During normalizing process of steel, the specimen is heated

Between the upper and lower critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in still air.
Between the upper and lower critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.

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