GET 70% Discount on All Products Coupon code: "Board70"
At least how far on each side of the weld should preheat be maintained?
2 in. (5.1 cm)
3 in. (7.6 cm)
4 in. (10.2 cm)
6 in. (15.2 cm)
What is a sensitized microstructure in austenitic stainless steels?
An area next to the heat-affected zone that has suffered some softening and loss of strength.
The microstructure of the weld that has been melted and will therefore have properties more like a casting than the base metal.
An area near the heat-affected zone affected by welding that may experience intergranular corrosion.
The high residual stress zone adjacent to the weld fusion line that will have higher hardness than the weld or base material.
What increases when a welder increases the amperage?
Voltage
Arc length
Heat
Travel speed
Codes/standards sometimes specify impact testing of weldments at minimum design metal temperatures to:
Assure that the welded material has sufficient yield strength to avoid brittle fracture.
Assure that the welded material has sufficient ductility to assist brittle fracture.
Assure that the welded material has sufficient toughness to resist brittle fracture.
Assure that the welded material has sufficient tensile strength to avoid failure at design loads.
TESTED 27 Dec 2024
