Introduction to Shielded Metal Arc Welding (SMAW)

TRUE or FALSE: scratch start-an arc starting method that requires an electrode to touch the work.

FALSE-an arc starting method that uses the high open-circuit voltage of the constant current (CC) welding power source to start the arc when the electrode comes into contact with the base metal.

TRUE or FALSE: crater-pockets or pores on or in the bead, when the weld's arc length is too long

FALSE-the unfilled end of a weld

TRUE or FALSE: undercutting-the weld is too cold

FALSE-when the weld reduces the cross-sectional thickness of the base metal

TRUE or FALSE: tap start-an arc starting method that requires an electrode to touch the work.

TRUE-an arc starting method that requires an electrode to touch the work.

TRUE or FALSE:: electrode holder-connected to the welding cable and holds the electrode for SMAW process welding.

TRUE-connected to the welding cable and holds the electrode for SMAW process welding.

TRUE or FALSE: good weld-proper current, speed, and arc length during the weld

TRUE-proper current, speed, and arc length during the weld

TRUE or FALSE: cold start-the bead is not hot enough because it did not have enough amperage

TRUE-the bead is not hot enough because it did not have enough amperage

welding electrode a. lengths of wire that are connected with your welding machine to create an electric arc b. the welding cable which constitutes the electrical path between the electrode terminal of the machine and the electrode holder. c. the electric conductor between the source of arc welding current and the work.

a. lengths of wire that are connected with your welding machine to create an electric arc

bead consistency a. the weld bead looks consistent with no gaps b. the relationship between the axis of the electrode to the coupon c. employing either a push angle or a drag angle

a. the weld bead looks consistent with no gaps

porosity a. nonmetallic pieces trapped in the bead b. pockets or pores on or in the bead, when the weld's arc length is too long c. proper current, speed, and arc length during the weld

b. pockets or pores on or in the bead, when the weld's arc length is too long

work lead a. lengths of wire that are connected with your welding machine to create an electric arc b. the electric conductor between the source of arc welding current and the work. b. the welding cable which constitutes the electrical path between the electrode terminal of the machine and the electrode holder.

b. the electric conductor between the source of arc welding current and the work.

work angle a. the weld bead looks consistent with no gaps b. the relationship between the axis of the electrode to the coupon c. employing either a push angle or a drag angle

b. the relationship between the axis of the electrode to the coupon

travel angle a. the weld bead looks consistent with no gaps b. the relationship between the axis of the electrode to the coupon c. employing either a push angle or a drag angle

c. employing either a push angle or a drag angle

slag inclusions a. craters b. pockets or pores on or in the bead, when the weld's arc length is too long c. nonmetallic pieces trapped in the bead

c. nonmetallic pieces trapped in the bead

coupon a. used to get discounts on purchases b. a percent off a full price item c. the base metal used to weld a bead on; also called "work"

c. the base metal used to weld a bead on; also called "work"

electrode lead a. lengths of wire that are connected with your welding machine to create an electric arc b. the electric conductor between the source of arc welding current and the work. c. the welding cable which constitutes the electrical path between the electrode terminal of the machine and the electrode holder.

c. the welding cable which constitutes the electrical path between the electrode terminal of the machine and the electrode holder.

Fill in the blank: What does SMAW stand for?

shielded metal arc welding