Metal work

Metal fabrication is

• a process of transforming of metal ores into a desired shape finished product

• a process to fabricate something new

• to design new product

• to measure finished product

Metal works is

• to change the shape of finished product

• to change the dimension of finished product

• a metal forming process by plastic deformation process

• a metal forming process by elastic deformation process

Metal works divided into___process

• 2

• 3

• 4

• 5

Hot works is a processes where metals are plastically deformed above the recrystallization temperature. Below is types of hot works EXCEPT....

• Forging

• Extrusion

• Rolling

• Drawing

Cold works is a process of

• elastic deformation that occurs below recrystallization temperature

• plastic deformation that occur below recrytallization temperature

• elastic deformation that occurs above recrystallization temperature

• plastic deformation that occur above recrytallization temperature

Advantages of cold works EXCEPT....

• No appreciable recovery takes place during deformation

• Improve hardness, tensile, fatigue in metal.

• Produce good surface finish on metal.

• expensive

Extrusion is

• a bar or metal is forced from an enclosed cavity via a die orifice by a compressive force applied by a ram.

• passing a piece of metal between two rolls

• the metal is hammered or pressed into a desired shape.

• rod or wire stock is drawn through one or more tapered wire drawing dies

Figure show the metal work of .......

• Cold rolling

• Hot rolling

• Drawing

• Forging

Figure show metal work of ......

• Drawing

• Forging

• Extrusion

• Rolling

Drawing can divided into ____types

• 2

• 3

• 4

• 5