Mechanical tools

The different bending tools The uses of twisting and scroll bending The prevention of defects in bending Bending✌👰 Bending is a method of chipless shaping by which the external grain structure is lengthened 👉while the internal grain structure is shortened. Types of bending Bending to curve Bending to an angle BENDING TOOLS Vice or anvil edge An angle bend may be hammering in a vice or over the edge of an anvil. Bending block Bending blocks with lever and pegs are very convenient to use in a smithy. These are massive blocks pierced with holes in which pegs can be inserted. The work to be bent is placed between a series of pegs, already inserted in the holes, and the work is bent with a lever. Tool inserted in a hardle hole Some of the bending tools, like ring, mandrel are inserted in the hole of the anvil for bending the workpieces Beak of the anvil Curving of the workpieces can also be carried out on the beak of the anvil Bending links Bending links with top fullers are used for smal...

  The types of metals used in sheet metsl work The uses of the different types of metals In sheet metal work, different types of metals sheets are used. The sheets are specified by standard gauge munbers. It is very essential to know the different uses and applications of these metal sheets. Black iron The cheapest sheet metal is black iron, which is rolled to the desired thickness. It has a bluish black appearance, and is often referred to as  uncoated sheet. Since it is uncoated, it corrodes rapidly. The use of this metal is limited to articles that are to be painted or enamelled such as tanks, pans, stoves, pipes etc Galvanised iron Zinc -coated iron is known as galvanised iron. This soft iron sheet is popularly known as GI sheet. The zinc coating resists rust, improves the appearance of the metal and permits it to be soldered with greater ease. Because it is coated with zinc, galvanised sheet iron withstands contact with water and exposure of weather. Articles such as pans...