Metal Lessons

Metal Lessons

MANUAL OXYFUEL GAS WELDING (OFW)

LEARNING OBJECTIVE #1: Perform safety inspections of equipment and accessories.

PERFORMANCE CONDITIONS: Provided with a period of instruction and demonstration, safety inspection guidelines, protective clothing and equipment, manual OFW equipment and access oxygen/fuel gas supply systems and accessories, and hand tools, in the work area.

DESIRED BEHAVIOR: the student performs safety inspections of protective equipment and clothing oxyfuel gas welding equipment and accessories, oxygen/fuel gas supply systems and accessories, required tools and the work area.

EVALUATION CRITERIA: The student's protective equipment and clothing, manual oxygen equipment and accessories, oxygen/fuel gas supply systems and accessories, hand tools, and work area meet safety requirements.

In the course of daily operations the student is observed following safe practices. The objective is performed as required during the length of program. In accordance with the requirements of AWS QC10.

Learning Activities:

The instructor shall

1. Ensure that existing or new training materials are in compliance with the AWS document specified for this learning objective.

2. Provide safety tour and orientation to oxyfuel gas cutting supply systems, equipment and accessories.

3. Provide demonstrations related to ANSI Z49.1, Safety in Welding,

Cutting and Allied Process.

Part 11- Specific Processes. 10. Oxyfuel Gas Welding and cutting safety

4. Provide demonstrations related to routine safety inspections of

protective equipment and clothing, oxyfuel gas cutting supply

systems, equipment and accessories, required tools and work area.

S. Provide instruction related to ANSI Z49.1, Safety in Welding, Cutting and Allied Processes, Part II- Specific Processes 10. Oxyfuel Gas

Welding and Cutting Safety.

6. Reinforce previous instruction from ANSI Z49.1, Safety in Welding,

Cutting and Allied Processes, Part I -General Aspects.

7. Introduce related terms and definitions.

8. Observe Student conducting safety inspections.

9. Observe Student following safe practices

10. Observe student using proper terms and definitons

11. Develop and administer formative or diagnostic tests relevant to safe oxyfuel gas cutting practices.

LEARNING OBJECTIVE #2 : Perform shaping operations on plain carbon steel, using the manual oxyfuel gas welding process.

PERFORMANCE CONDITIONS: Provided with a period of instruction and demonstration, protective clothing and equipment, manual oxyfuel gas welding equipment and accessories, oxygen/fuel gas supply systems and accessories, hand tools, base metal and a cutting assignment, in the work area,

DESIRED BEHAVIOR: the student will make heat plain carbon steel round stock and hammer into an oblong shape.

EVALUATION CRITERIA: The student's shapes must have a rough surface appearance. During and after each hammer operation, the shape and surface is to be visually examined by the student and accepted by the instructor.

LEARNING ACTIVITIES:

The instructor shall:

1. Provide demonstrations related to shape cutting operations using

manual oxyfuel gas welding equipment.

2. Provide instruction related to visual examination of surfaces.

3. Provide training exercises related to welding and heating operations

on plain carbon steel, using manual oxyfuel gas cutting equipment.

4. Observe student following safe oxyfuel gas welding practices.

5. Observe student operating manual oxyfuel gas welding equipment.

6. Visually inspect student's workmanship samples.

7. Provide instruction in welding and heating procedures related to

this learning objective.

LEARNING OBJECTIVE #3 : Make fillet welds, all positions, on plain carbon steel, using the shielded metal arc welding process.

PERFORMANCE CONDITIONS: Provided with a period of demonstration, protective clothing and equipment, shielded metal arc welding equipment, accessories, E6010 or E6011, and E7018 electrodes, base metal or an assembly, hand tools, and a welding assignment, in the work area.

DESIRED BEHAVIOR: the trainee will make fillet welds on plain carbon steel in all positions.

EVALUATION CRITERIA: The trainee produces sound fillet welds in all positions. During and after each operation, welds are visually examined by the welder and accepted by the instructor. The objective is practiced in individual stages, beginning with the IF (flat) position and ending with the 4f (overhead) position. The objective is practiced on a routine basis during the shielded metal arc welding portion of the program.

LEARNING ACTIVITIES:

1. Provide demonstrations related to all position fillet welding.

2. Provide instruction related to visual examination of fillet

welds produced with the shielded metal arc welding process.

3. Provide training exercises related to IF (flat), single and

multiple pass fillet welding, on plain carbon steel, using E60IO

or E60II, and E7018 electrodes.

4. Provide training exercises related to 2F (horizontal), single

and multiple pass fillet welding, on plain carbon steel, using

E6010 or E6011, and E7018 electrodes.

5. Provide training exercises related to 3F (vertical up), single

and multiple pass fillet welding, on plain carbon steel, using

E6010 or E6011, and E7018 electrodes.

6. Provide training exercises related to 4F (overhead), single and

multiple pass fillet welding, on plain carbon steel, using E6010

or E6011, and E7018 electrodes.

7. Observe trainee following safe arc welding practices.

8. Observe trainee operating shielded metal arc welding equipment.

9. Visually inspect trainee's workmanship samples.

AWS EG2.0-95

Guide for the Training and Qualification of Welding Personnel Entry Level Welders

Prepared by

AWS Education Department

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Last updated: November 13, 2002.