Theory Of metal Cutting (Types of Material and Property)

PRESENTATION THEORY OF METAL CUTTING

TOPIC- TYPES OF MATERIAL AND PROPERTY

PRESENTED BY:

RAJKUMAR GUPTA 43VIVEK TYAGI 42MAYANK JAIN 46

ANUJ KUMAR MISHRA 18

TYPES OF MATERIAL

1. Metallics2. Polymers 3. Ceramics 4. Composites5. Other materials

CLASSIFICATION OF MATERIALS (METALS)

•Metals can be further classified as Ferrous & Non-Ferrous, some examples include;Ferrous Non-Ferrous

Steels Aluminium

Stainless Steels Copper

High Speed Steels Brass

Cast Irons Titanium

AluminiumCopperBrassStainless SteelHigh Speed steel

POLYMERS

• Poly means many and mer stand for unit • It is like chainlike molecule made up of smaller moleculer unit

(monomers )• Ex- Plastics, wood, elastomers • Themosetting plastics, thermosets

CERAMICS

• Ceramics are compounds of metallic and non-metallic elements, examples include;

• Oxides (alumina – insulation and abrasives, zirconia – dies for metal extrusion and abrasives)

• Carbides (tungsten-carbide tools)• Nitrides (cubic boron nitride, 2nd in hardness to diamond)

COMPOSITES

• A composite is a combination of two or more chemically distinct materials whose physical characteristics are superior to its constituents acting independently.

• Because of their high strength/stiffness to weight ratio they are widely used in the; • Aerospace industry• Offshore structures• Boats• Sporting goods

COMPOSITES

• Examples of composites include;• Reinforced Plastics• Ceramic-matrix• Metal-Matrix• Laminates

Kevlar, taffeta polyester sailsGlass reinforced plastic hull

Carbon reinforced plasticThrust chamber for rocketCombustion chamber of jet engine

Cylinder liningsCylinder liningsOuter skin panels & fuselage A380

OTHER MATRIALSProperty of Cast iron can be economically cast into complicated shapes capacity of damping out vibration resistance to wear , abrasion and corrosion machined easily high compressive resistance brittle and has no plasticity

VARIOUS TYPE OF CAST IRON

1) Grey CI 2) White CI 3) Malleable CI 4) Chilled CI

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