tailieunhanh - 2005 ProcessesStick (SMAW) WeldingGuidelines For Shielded Metal Arc Welding

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. | Miller 155 095 A July 2005 Processes Stick SMAW Welding Guidelines For Shielded Metal Arc Welding SMAW 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. Visit our website at 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. TABLE OF CONTENTS SECTION 1 - SAFETY PRECAUTIONS - READ BEFORE USING. 1 1-1. Symbol Usage. 1-2. Arc Welding Hazards. 1-3. Additional Symbols For Installation Operation And Maintenance . 1-4. California Proposition 65 Warnings. 1-5. Principal Safety Standards . 1-6. EMF Information . 1 1 3 3 4 4 SECTION 2 - PRINCIPLES OF SHIELDED METAL ARC WELDING SMAW . 5 SECTION 3 - SHIELDED METAL ARC WELDING SMAW PROCEDURE. 6 3-1. Typical Stick Welding Set-Up . 6 3-2. Electrode And Amperage Selection Chart. 7 3-3. Striking An Arc - Scratch Start Technique. 8 3-4. Striking An Arc - Tapping Technique . 8 3-5. Positioning Electrode Holder. 9 3-6. Electrode Movement During Welding. 10 3-7. Conditions That Affect Weld Bead Shape . 11 3-8. Poor Weld Bead Characteristics . 12 3-9. Good Weld Bead Characteristics . 12 3-10. Typical Weld Joints . 13 3-11. Welding Butt Joints . 14 3-12. Welding Tee Joints . 15 3-13. Welding Lap Joints . 15 3-14. Welding Horizontal Beads And Butt Joints . 16 3-15. Welding Vertical Beads And Butt Joints . 17 3-16. Welding Vertical Tee Joints And Lap Joints . 18 3-17. Welding Overhead Butt Joints And .