Manufacturing And Production Technology
In a metal arc welding process, metal transfer across the arc may take place by a method of material transfer where the metal transfers across the arc is in larger drops. This is at the rate of 100 drops/sec or less, what is this known as

GMAW practice
Dip transfer
Spray transfer
Globular transfer

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Manufacturing And Production Technology
In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to

Circular interpolation in clockwise direction and absolute dimension
Circular interpolation in clockwise direction and incremental dimension
Circular interpolation in counter clockwise direction and incremental dimension
Circular interpolation in counter clockwise direction and absolute dimension

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