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Giáo trình Hàn kim loại (Tiếng Anh)

Giáo trình cung cấp cơ sở cho người đọc các thao tác hàn điểm, hàn 3G, 6G, và để an toàn lao động khi hàn. Giáo trình được viết bằng tiếng Anh trình độ đại học và sau đại học. Giáo trình chỉ mang tính chất tham khảo. | Miller 003 335A_ July 2005 Processes B Resistance Spot Welding Description Resistance Spot Welder HANDBOOK FOR Resistance Spot Welding WARNING ARC WELDING can be hazardous. Visit our website at www.MillerWelds.com 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. TABLE OF CONTENTS SECTION 1 - SAFETY PRECAUTIONS - READ BEFORE USING . 1 1-1. Symbol Usage. 1 1-2. Resistance Spot Welding Hazards. 1 1-3. Additional Symbols For Installation Operation And Maintenance . 2 1-4. California Proposition 65 Warnings. 2 1-5. Principal Safety Standards . 2 1-6. EMF Information. 2 SECTION 2 - CONSIGNES DE SÉCURITÉ - LIRE AVANT UTILISATION . 3 2-1. Signification des symboles . 3 2-2. Dangers liés au soudage par points. 3 2-3. Dangers supplémentaires en relation avec l installation le fonctionnement et la maintenance . 4 2-4. Principales normes de sécurité. 4 2-5. Information sur les champs électromagnétiques. 4 SECTION 3 - INTRODUCTION. 5 SECTION 4 - FUNDAMENTALS OF RESISTANCE SPOT WELDING. 6 4-1. Principle. 6 4-2. Heat Generation . 6 4-3. The Time Factor . 7 4-4. Pressure . 7 4-5. Electrode Tips. 7 4-6. Practical Uses Of Resistance Spot Welding . 8 4-7. Electrode Tip Size. 8 4-8. Pressure Or Welding Force. 9 4-9. Miscellaneous Data . 9 4-10. Heat Balance. 9 4-11. Surface Conditions. 10 4-12. Materials Data For Resistance Spot Welding. 10 .