Module 19: Electric Arc Welding Electrode Selection and Use (Core)

Module 19: Electric Arc Welding Electrode Selection and Use (Core)

Suggested Time: 12-15 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.
To use appropriate safety appliances when engaged in practical activities.

Common Essential Learnings Foundational Objectives

To use the language, symbols, and terms specific to the welding field and to express knowledge of the area using communication skills. (COM)
To analyze work projects to determine the equipment and procedures necessary to complete the task. (CCT)
To develop students' abilities to meet their own learning needs through practical welding experiences. (IL)

Learning Objectives	Notes
19.1 To select an electrode. 19.2 To describe four types of welding joints. (COM) 19.3 To describe two basic welding positions. 19.4 Demonstrate the correct procedure for striking the arc.	Scratch method. (CCT) Butt, lap, corner, and fillet. Flat and horizontal. Demonstrate arc length, electrode angle, rate of travel, amperage setting, and electrode selection. (TL, IL)
19.5 To run continuous weld beads on mild steel plate. (TL)	Demonstrate preparation, fit up, electrode, current type, amperage, and procedure. (IL)
19.6 Perform a butt weld on mild steel plate.	Teacher demonstration; student practice. (IL)
19.7 To demonstrate basic arc welding practices following the list of procedures. (IL)	Assign practical assignments that require running beads (4 hrs.), tacking welds (2 hrs.), and butt welding (2 hrs.).

Module 20A: Electric Arc Welding: Electrodes, Weld Joint, and Positions (Core)

Suggested time: 4-6 hours Level: Advanced

Foundational Objective

To become familiar with tools, equipment, and techniques used in the welding trade.

Common Essential Learnings Foundational Objective

To enable students to understand and use the vocabulary in the field of welding. (COM)

Note: Other CELs may be emphasized.

Learning Objectives	Notes
20.1 To name and describe seven types of electrodes. (COM)	6010, 6011, 6013, 7013, 7014, 7018 and 7024.
20.2 To name and describe four specialty electrodes. 20.3 To describe two types of currents available. 20.4 To discuss polarity.	The four specialty electrodes are stainless steel, aluminum, nickel, and hard surfacing. Direct and alternating current. Reverse + polarity and straight - polarity.
20.5 To describe basic types of welding joints. (COM)	Butt, lap, corner inside, corner outside, tee, edge, and fillet.
20.6 To describe four types of basic welding positions.	Flat, horizontal, vertical, and overhead. Student assessment and evaluation should include exams on topics such as joint design, welding terms, and electrodes.

Module 20B: Electric Arc Welding: Electrodes, Weld Joint, and Positions (Core)

Review or repeat module 20A as required before progressing to the next module at the A30 level.

Suggested time: 4-6 hours

Module 21A: Electric Arc Welding Assignments (Core)

Suggested time: 8-10 hours Level: Introductory

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 estimate, measure, compute, and interpret numerical data in welding. (NUM)
To demonstrate safe welding practice. (TL)

Note: Other CELs may be emphasized.

Learning Objectives	Notes
21.1 To run continuous weld beads on mild steel plate. (TL)	Review electrode selection, arc length, electrode angle, rate of travel, amperage setting, and weld faults and causes. (NUM)
21.2 To perform a butt weld on a mild steel plate.	Weld one and three pass horizontal fillet on 1/4" mild stell using E7024. Weld vertical up fillet on 1/4" mild steel using E7018.
21.3 To pad a plate with at least two layers on each side.	Practical assignments: beads ( 6011 - 1 hr.), tack welds (6011 - 1 hr.), butt welds (1 hr.), beads (6013 - 1 hr.), beads (7014 - 1 hr.), beads (7018 - 1 hr.), padding (7014 one side - 2 hrs.), and (7018 one side - 2 hrs.). (NUM, TL, IL)

Module 21B, C, D: Electric Arc Welding Assignments (Optional)

Review or repeat Module 21A as required before progressing to the next module at the 30 level.

Suggested time: 8-10 hours

Module 22A: Electric Arc Welding "Vee" Butt Weld (Core)