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					                  Lesson 9 – 096.01 Cutting / Welding

                  LESSON OBJECTIVES:
Time: 200 Hours
                    Acquaint the student with safe and proper use of both oxy-fuel metal
                    cutting and electric arc welding. Upon completion of this lesson, the
                    student will be able to perform the required cutting and welding processes
                    necessary for a successful tradesman.

                  REFERENCES:
                    Carpentry – Fourth Edition / Leonard Koel
                    Washington State Safety Standards
                    Pocket Welding Guide – Hobart
                    Information Sheets
                    Bates Technical College Library

                  VISUAL AIDS:
                    See Appendix – G
                    Suggested Viewing Check Video Selection
                    Welding Safety

                  STUDY ASSIGNMENT:
                    Carpentry – Fourth Edition / Leonard Koel
                       Unit 19 – Welding & Metal Cutting Equipment / 132
                    Washington State Safety Standards – see index for welding
                    Pocket Welding Guide – review text as needed

                  IMPORTANT STUDY POINTS:
                        1.       Learn the care and use of your protective attire.
                        2.       Know that the eye protection has required lenses for each
                             procedure.
                        3.       Identify each component by name for the equipment being
                             used.
                        4.       Familiarize yourself with the relationship of the red and green
                             gas hoses to left and right handed threaded fittings.
                        5.       Become acquainted with the terms; AC & DC, straight polarity,
                             reverse polarity, flux, flat, horizontal, vertical, and overhead.
                        6.       Understand the hazards effecting each procedure, and how to
                             avoid them.
                        7.       Review the electrode properties, its classification, and use.
WORK ASSIGNMENT:
  Carpentry Workbook – Fourth Edition / Proctor
  Unit Exercise 19 – Welding & Metal Cutting Equipment / 73

TEST:
  For burning or cutting operations the drag lines must be vertical and not
  pronounced; cut must be sharp and clean.
  All arc welds must be deposited with complete fusion and must be free
  from slag, overlapping, cracking, and porosity; it must be 25% greater in
  width than depth, and must be without undercutting.

LAB:
  All learning procedures for this lesson whether prior to, during, or in lieu of
  the Carpentry course class hours must have or will take place at an
  accredited institution under the supervision of a certified welding instructor.
  This task is not offered in the carpentry shop proper.
Performance Objective:

96.01 Demonstrate knowledge of welding principles/procedures
and safety
   Given a written test, the student will demonstrate knowledge of welding
   principles/procedures and safety. Ancillary occupation pre-apprenticeship
   students must score minimum 50% accuracy.

96.02 Set up oxyacetylene, SMAW (ARC) and GMAW (MIG)
welding equipment
   Given appropriate equipment, supplies, power source, and tools, the
   student will set up oxyacetylene, shielded metal arc welding, and GMAW
   (MIG) welding equipment. Set-ups must be within parameters of welding
   shop procedures. Safety practices/principles must not be violated.

96.03 Burn (cut) material using hand held torch
   Given a striker, metal cutting equipment, protective clothing/equipment,
   oxyacetylene cutting tips, welder's standard tool kit, work order, and
   workpiece, student will burn (cut) material using hand held torch, in
   accordance with welding shop procedures/guidelines for ancillary
   occupation pre-apprenticeship familiarization. Safety practices/principles
   must not be violated.

96.04 Make welds using SMAW process
   Given a chipping hammer, electrodes, grinder, SMAW equipment, fast
   freeze rods, fast fill rods, portable screens, protective clothing/equipment,
   weld gauge, wire brush, work orders, and work pieces, the student will make
   welds using SMAW process. Student must use appropriate fast fill or fast
   freeze rod, and make welds in accordance with welding shop
   procedures/guidelines for ancillary occupation pre-apprenticeship
   familiarization, performing welds in the four basic positions. Safety
   practices/principles must not be violated.

96.05 Weld steel using GMAW (MIG) process
   Given a filler metal, grinder, MIG equipment, protective clothing, weld
   gauge, wire brush, work orders, and workpieces, the student will use
   GMAW process to weld steel, in accordance with welding shop
   procedures/guidelines for ancillary occupation pre-apprenticeship
   familiarization. Safety practices/principles must not be violated.

CONDITIONS FOR PERFORMANCE OF TASK:
       1.   Study guide, Hobart welding pocket book
       2.   Accredited welding shop & certified instructor
       3.   Safety glasses ,wire brush, and slag hammer
       4.   Cutting goggles, striker, soapstone in holder
       5.   Welding hood, leather jacket, & gloves.
6.

				
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