Module 15: Shielded Metal Arc Welding

Module 15: Shielded Metal Arc Welding (S.M.A.W.) Procedures (Core)

Suggested time: 15-20 hours Level: Introductory

Foundational Objective

To demonstrate the safe and proper use of welding tools and materials.

Common Essential Learnings Foundational Objective

To use the language and terms specific to the welding field, and express knowledge of the area using communication skills. (TL, COM)

Learning Objectives

Notes

15.1 To understand and define common welding terms. (COM)

15.2 To name and describe four types of electrodes.

15.3 To describe two types of basic welding positions. (TL)

15.4 To describe two types of current available.

15.5 To demonstrate safe and correct start-up and shut-down procedures.

Define alternating current, anode, bevel, backing or backup, backstep welding, capillary attraction, cathode, constant current, ductility, downhand welding, uphand welding, flux, duty cycle, elasticity, brazing, tensile strength, yield point, peening, solder, strain, transformer, rectifier, and generator.

6011, 6013, 7014, 7018. (NUM)

Flat and horizontal position.

Direct and alternating current. Discuss polarity (reverse and straight).

Review Module 1.

Discuss and demonstrate setting up a station, using a ground clamp and electrode, setting amperage, checking voltage, starting the machine, shutting down, and cleaning up.

Learning Objectives

Notes

15.6 To demonstrate basic knowledge of the components of the Electric Arc Welding Machine.

15.7 To demonstrate and explain striking the arc, setting and adjusting amperage, electrode angle, and rate of travel. (TL, COM)

See SIAST Level I Electric Arc.

Practical assignment: vee butt in the flat position.

Create a checklist of criteria to evaluate electric arc welding.

Module 16: Electric Arc Welding; Weld Faults (Core)

Suggested time: 2-4 hours Level: Intermediate

Foundational Objective

To learn to develop critical evaluation skills in order to judge quality welding workmanship.

Common Essential Learnings Objective

To evaluate the quality of practical skills related to welding and determined corrective measures to identify faults. (CCT)

Note: Other CELs may be emphasized.

Learning Objectives

Notes

16.1 To recognize common electric arc weld faults. (CCT)

16.2 To define the terms.

Faults include amperage setting, angle of electrode, bead crack, fish eyes, hard spots, hot short, locked stresses, longitudinal and transverse cracks, rate of travel, type of electrode, underbead cracking, and weld dimensions. (IL)

Identify cause of weld faults, how to spot them, and how to avoid them.

Written exams should be included as part of student assessment and evaluation.

Module 17: Electric Arc Weld Faults and Causes (Core)

Suggested time: 2-4 hours Level: Advanced

Foundational Objective

To learn to develop critical evaluation skills in order to judge quality welding workmanship.

Common Essential Learnings Objective

To use the language and terms specific to the welding field and to express knowledge of the area using communication skills. (COM)

Note: Other CELs may be emphasized.

Learning Objectives

Notes

17.1 To identify electric arc faults and to define the terms. (COM, CCT)

17.2 To indicate corrections for electric arc faults. (CCT, IL)

17.3 To fix electric arc weld faults. (IL)

Discuss crater cracking, gas pockets, magnetic arc blow, porosity, stray flash, bead sagging, subsurface defects, undercut, unfilled crater surface preparation, and clamping. (COM)

Hold a class discussion.

Review Module 15.

Module 18A: Electric Arc Gauge Metal Welding (Core)

Suggested time: 4-5 hours Level: Intermediate

Foundational Objectives

To develop effective use of tools and equipment in order to develop entry level skills in the welding trade.
To develop critical evaluation skills in order to judge quality welding workmanship.

Common Essential Learnings Foundational Objectives

To use numeracy skills to measure and calculate required sizes and shapes of products used and constructed in the welding. (NUM)

Note: Other CELs may be emphasized.

Learning Objectives	Notes
18.1 To understand the essentials associated with arc welding of gauge metal.	Discuss gauge metal sizes, types of joints, and types of electrodes. (NUM, COM)
18.2 To weld gauge metal in the flat position. (TL)	Weld 14 gauge metal in the flat position with a lap joint. Weld 14 gauge, horizontal fillet using E6010/11. Weld 14 gague, flat, square groove butt joint. Weld 14 gauge lap joint vertical down. Weld 14 gauge metal in the flat position with a tack weld. Assign projects that will allow students to practice welding gauge metal. (IL)

Module 18B: Electric Arc Gauge Metal Welding (Optional)

Review or repeat module 18A as required before progressing to the next module at the B30 level.

Suggested time: 2-3 hours