Principles of Submerged Arc Welding (SAW)

In submerged arc welding, the welding current is primarily responsible for:

a: Generating heat to melt the base metal and filler wire Explanation

Explanation

b: Controlling the speed of the welding process Explanation

Explanation

c: Providing a shielding gas to protect the weld pool Explanation

Explanation

d: Controlling the arc length during welding Explanation

Explanation

Extremely low welding current may lead to

a: Insufficient penetration Explanation

Explanation

b: Narrow weld bead Explanation

Explanation

c: Increased porosity Explanation

Explanation

d: Cracks in the weld bead Explanation

Explanation

The purpose of controlling the arc voltage in submerged arc welding is to

a: Regulate welding speed Explanation

Explanation

b: Maintain stable arc Explanation

Explanation

c: Adjust the electrode size Explanation

Explanation

d: Control electrode consumption Explanation

Explanation

Submerged arc welding is suitable for welding

a: Thin sheet metal Explanation

Explanation

b: Plastic Explanation

Explanation

c: Wood Explanation

Explanation

d: Thick metal plates Explanation

Explanation

A larger diameter electrode in SAW produces

a: Higher deposition rate Explanation

Explanation

b: Deeper penetration Explanation

Explanation

c: Both a & b Explanation

Explanation

d: None Explanation

Explanation

Copper coating of the electrode wire is done to

a: Increase heat and resistance Explanation

Explanation

b: Make it shiny Explanation

Explanation

c: Increase conductivity and corrosion resistance Explanation

Explanation

d: None of the above Explanation

Explanation

Extremely low welding speed leads to

a: Arc blow Explanation

Explanation

b: Porosity Explanation

Explanation

c: Slag inclusion Explanation

Explanation

d: Undercut Explanation

Explanation

The current density in submerged arc welding is determined by

a: Electrode diameter Explanation

Explanation

b: Flux composition Explanation

Explanation

c: Welding voltage Explanation

Explanation

d: Welding speed Explanation

Explanation

Which of the following factors determines the appropriate welding current for submerged arc welding?

a: Thickness of the base metal Explanation

Explanation

b: Welding position Explanation

Explanation

c: Type of flux used Explanation

Explanation

d: All of the above Explanation

Explanation