Standard

 

WLD 107 - Shielded Metal Arc Welding IV

Course Description

Introduces the major theory, safety practices, and techniques required for shielded metal arc welding (SMAW) in the overhead position.  Qualification tests, overhead position, are used in the evaluation of student progress toward making industrial standard welds.  Topics include:  overhead SMAW safety and health practices, selection and applications of electrodes for overhead SMAW, overhead SMAW joints, and overhead SMAW to specification.

 

Competency Areas

Hours

 

Overhead SMAW Safety and Health Practices     

Class

3

Selection and Applications of Electrodes for Overhead SMAW

D. Lab

4

Overhead SMAW Joints

P. Lab/O.B.I.

3

Overhead SMAW to Specification

Credit

6

 

 

 

Prerequisite:

WLD 104

Corequisite:

     

 

 

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

OVERHEAD SMAW SAFETY AND HEALTH PRACTICES

8

5

2

Safety rules and environmental concerns

Demonstrate safety and health practices and explain how they apply to overhead welding.

 

 

 

SELECTION AND APPLICATIONS OF ELECTRODES FOR OVERHEAD SMAW

4

5

2

Types

Identify the types of electrodes that are qualified for overhead welding.

 

 

 

Characteristics

Identify the operational characteristics of these five electrodes:  E6010, E6011, E7013, and E7018.

 

 

 

OVERHEAD SMAW JOINTS

10

20

26

Preparation

Prepare joints according to specification for the overhead (4F 4G) position.

 

 

 

Stringer and weave beads

Weld stringer or weave beads on the practice plate in the vertical position, using either a 1/8” E6010 or 6011 electrode.

 

 

 

Square groove butt joint

Weld a square groove butt joint in the overhead (4G) position using one root bead, one weave bead, or stringer beads for the cover pass using either a 1/8” E6010, E6011, or E60XX electrode.

 

 

 

Lap joint (fillet weld)

Weld a lap joint in the overhead position using the 1/8” E6010, E60XX, or 6011 electrodes.

 

 

 

Tee joint

Weld a Tee joint in the overhead (4F) position using a E6010 or E60XX electrode with three passes each side of joint.

 

 

 

Single V-groove butt joint

Weld a single V-groove butt joint in the overhead (4G) position using the 1/8” E6010 or E60XX electrode in three passes without a backing bar.

 

 

 

Butt joint

Weld a butt joint in the overhead (4G) position, using 1/8” E7018 electrode using only one pass on each side of joint.

 

 

 

Tee joint

Weld a three-pass Tee joint on both sides in the overhead (4F) position using an E7018 electrode.

 

 

 

Single V-groove butt

Weld a single V-groove butt joint with a backing bar in the overhead (4G) position using the 1/8” E7018 electrode.

 

 

 

OVERHEAD SMAW TO SPECIFICATION

8

10

15

Welding specifications

Describe and explain the purpose of welding specifications.

 

 

 

 

Complete overhead welds to ASME specifications.

 

 

 

 

Suggested Resources

 

Althouse, A.D., & Turnquist, C.H. (1992). Modern Welding. South Holland, IL: Goodheart-Willcox.

Giachino, J.W., et al.  (1992).  Welding Skills And Practices. Kalamazoo, MI: Books Demand.

Griffin, I.H, et al. (1984). Welding Processes (3rd ed.). Albany, NY: Delmar.

Sacks, R.J. (1981). Welding Principles And Practices (4th ed.). Peoria, IL: Chas. A. Bennett.