Question

In: Mechanical Engineering

Two wisp steel wool hangs in an old fashioned weight. The quantities are adjusted so they...

Two wisp steel wool hangs in an old fashioned weight. The quantities are adjusted so they weigh exactly the same. The one up is now heated, well with a gas flame, which is then removed.

- What happens?

- Which of the totes is now the heaviest?

- Explain the transformation in the 17th century language.

- Explain the transformation with a modern reaction scheme.

Solutions

Expert Solution

It is about heat treatment process of steels. The specimen was carburised with the help of an intense flame. When it js well heated with flame, carbon atoms in the flame difusses into outer periphey of workpiece specimen. Then it was removed. This will create a hard core on the material. It makes this totes heaviest.

In modern reaction scheme with the help of a flame with carbon content such as acetylene flame, is used to harden steel. It is heated well above upper critical temperature and quenched(rapid cooling) in spray of steel. Due to rapid cooling enough time will not get for difussion which keeps the carbon atoms on the core of material.

samet mamat answered 2 years ago
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