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Tham khảo tài liệu 'guidelines to gas tungsten arc welding (gtaw) warningarc welding', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | UG-215 994 July 2003 Guidelines To Gas Tungsten Arc Welding GTAW A WARNING ARC WELDING can be hazardous. This document contains general information about the topics discussed herein. This document is not an application manual and does not contain a complete statement of all factors pertaining to those topics. This installation operation and maintenance of arc welding equipment and the employment of procedures described in this document should be conducted only by qualified persons in accordance with applicable codes safe practices and manufacturer s instructions. Always be certain that work areas are clean and safe and that proper ventilation is used. Misuse of equipment and failure to observe applicable codes and safe practices can result in serious personal injury and property damage. Ref. 161892-B TABLE OF CONTENTS SECTION 1 - SAFETY . 1 SECTION 2 - THE TIG PROCESS. 2 2-1. What Is TIG. 2 2-2. GTAW TIG Connections. 2 2-3. TIG Advantages . 3 2-4. TIG Disadvantages. 3 2-5. AC Sine Wave. 4 2-6. Zero Crossover Area . 4 2-7. Squarewave Imposed Over A Sinewave . 5 2- 8. Conventional Squarewave AC . 5 SECTION 3 - ARC ShApING capabilities. 6 3- 1. Arc Starting Methods . 6 3-2. Balance Control . 6 3-3. AC Frequency Adjustment Control . 7 3-4. Amperage Adjust Control . 7 3-5. Frequency Adjustment Control - 60 Hz . 8 3-6. Frequency Adjustment Control - 200 Hz . 8 3-7. Suggested Inverter Power Source Starting Parameters For Various . . . Aluminum Joints. 9 3- 8. Suggested Inverter Power Source Starting Parameters For Various . . . Aluminum Joints Continued . 10 SECTION 4 - TUNGSTEN SELECTION AND PREPARATION . 11 4- 1. Safety Information And Selecting Tungsten Electrodes . 11 4-2. Selecting A Tungsten Electrode . 11 4-3. Proper Tungsten Preparation . 11 4-4. More About Tungsten Preparation . 12 4-5. Tungsten Shape For AC Sine Wave Conventional Squarewave . 13 4- 6. Tungsten Shape For Inverter AC DC . 13 SECTION 5 - TIG sHiELDING gases. 14 5- 1. TIG Shielding Gases . 14 5-2. .
