Workshop Technology
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

Die casting method
Permanent mould casting method
Centrifugal casting method
Slush casting method

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Workshop Technology
Spot welding is used for welding

Lap joints in plates having 0.025 mm to 1.25 mm thickness
Lap joints in plates having thickness above 3 mm
Butt joints in plates having thickness above 3 mm
Butt joints in plates having 0.025 mm to 1.25 mm thickness

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