Types of chisels workshop

 The different types of chisels

. list the uses of a cold chisel

. name the parts of a cold chisel.

State the different types of chisels.

The cold chisel is a  hand cutting tool used by fitters for chipping and cutting off operations.chipping is an operation of removing excess metal with the help of a chisel and hammer. Chipped surfaces being rough, they should be finished by filing.

Parts of a chisel

A chisel has the following parts.

Head

Body

Point or cutting edge

Chisels are made from high carbon steel or chrome vanadium steel. The cross section of chisels is usually hexagonal or octagonal. The cutting edge is hardened and tempered.

Common types of chisels

Flat chisel

Cross-cut chisel

Half-round chisel

Diamond point chisel

Flat chisel       

They are used to remove metal from Large flat surfaces and chip excess metal off weld joints and castings

Cross cut or cape chisel

These  are used for cutting keyways, grooves and slots.

Half round nose chisel

They are used for cutting curved grooves(oil grooves)

Diamond point chisels

There are used for squaring materials at the corners.

Web chisel/ punching chisel

These chisels are used for separating metals after chain.

Chesels are specified according to their

Length

Width of the cutting edge

Type

Cross section of the body

The length of the chisel ranges from 150mm  to 400mm. The width of the cutting edge varies according to the type of chisel.