Course: WLD102 First Term: 2014 Spring
Final Term: Current
Final Term:
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Lec + Lab 3 Credit(s) 6 Period(s) 5.1 Load
Credit(s) Period(s)
Load
Subject Type: OccupationalLoad Formula: S - Standard Load |
MCCCD Official Course Competencies | |||
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1. Explain safety procedures to follow when working with explosive and combustible substances. (I)
2. Explain and practice safe methods of storing and using acetylene and oxygen cylinders. (II) 3. Identify the functions, distinguishing characteristics, and uses of fittings, hoses, torches, and tips. (III) 4. Adjust the torch flame for various welding effects. (IV) 5. Explain basic points of welding, such as angle of torch and rod, speed of travel, volume of heat, and distance of cone from puddle. (V) 6. Describe various types of joints, and explain the uses of each type. (VI) 7. Explain and practice the process of brazing. (VII) 8. Define basic principles of arc welding, and explain the types of beads, electrodes, metal preparation, and welding techniques used in arc welding. (VIII, IX, X, XI, XII, XIII) 9. Identify and explain the function of equipment used in MIG welding. (XIV) 10. List and explain the steps involved in the process of MIG welding. (XV) 11. Identify the properties and uses of various metals used in MIG welding. (XVI) 12. Lay out patterns and designs for welded sculpture. (XVII) 13. Fabricate and critique original welded sculpture. (XVIII) | |||
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements. | |||
MCCCD Official Course Outline | |||
I. Oxy-Ace Welding Safety
A. Clothing 1. Gloves 2. Goggles 3. Boots 4. Long sleeved shirt 5. Cotton -no nylon B. Acetylene 1. Man-made 2. Explosive 3. Low ignition 4. Toxic 5. Unstable C. Oxygen 1. High pressure 2. Odorless 3. Supports combustion 4. Extracted from air II. Cylinders (Oxy-Ace) A. Storage 1. Oxygen separate from acetylene 2. Protective caps 3. Out of direct rays of sun 4. Upright position B. Usage (Oxy-Ace) 1. Support in upright position 2. Acetylene valve open one and one-half turns maximum 3. Oxygen valve open all the way 4. Keep away from sparks 5. Keep reasonable distance from heat 6. Keep away from flammable materials III. Regulators, Hoses, Torches, and Tips (Oxy-Ace) A. Fittings 1. Brass 2. Acetylene-left hand 3. Oxygen-right hand 4. Use NO oil B. Hoses 1. Acetylene-red 2. Oxygen-green 3. Do not use excessive length C. Torches 1. Injector type 2. Equal pressure type D. Tips 1. Soft copper 2. Cleaning-tip cleaner 3. Seating in torch body 4. Storage when not in use IV. Flame (Oxy-Ace) A. Adjustments 1. Carbonizing 2. Neutral 3. Oxidizing 4. Temperature V. Welding Fundamentals (Oxy-Ace) A. Key points 1. Angle of torch and rod 2. Speed of travel 3. Volume of heat 4. Distance of cone from puddle VI. Joint Types (Oxy-Ace) A. Corner joint B. Lap joint C. T or fillet joint D. Butt joint E. Edge joint 1. Forehand 2. Backhand VII. Brazing (Oxy-Ace) A. Cleaning 1. Mechanical 2. Chemical B. Joint Design 1. Bevels 2. Root spacing 3. Overlaps 4. Clearance VIII. Arc Welding (ARC) A. Trapping B. Strike IX. Four Key Points (Arc) A. Arc length B. Speed of travel C. Volume of heat D. Angle of rod X. Beads (Arc) A. Stringer B. Weave C. Whipping XI. Electrodes (Arc) A. Classification B. Heat range C. Coating types D. Diameter E. Storage F. Positions XII. Metal Preparation (Arc) A. Size and shape B. Types of joints C. Set-up D. Edge preparations E. Metal thickness XIII. Welding Techniques (Arc) A. Whipping (root pass) B. Oscillation C. Direction of weld XIV. MIG Welding Equipment (MIG) A. DC Generator B. Transformer rectifier C. Wire feeder D. Wire feed gun E. Spooled wire F. Electrical system G. Shielding gas system H. Possible water system XV. Procedures (MIG) A. Joint design B. Cleaning C. Wire diameter D. Voltage E. Wire speed-amperage F. Welding techniques G. Gas flow rate-CFH H. Nozzle size I. Drive roll pressure XVI. Metals (MIG) A. Aluminum B. Stainless steel C. Carbon steels XVII. Layout A. Patterns B. Scratches C. Designs XVIII. Application A. Fabrication B. Critique | |||
MCCCD Governing Board Approval Date: December 10, 2013 |