Farm and Workshop Welding, Third Revised Edition

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Andrew Pearce. Farm and Workshop Welding, Third Revised Edition

Contents

Introduction

Don’t Take Risks

ANY OLD IRON? Metal Identification

Section 1. Steels

Section 2. Abrasives

Section 3. Manual Metal Arc Welding

Section 4. MIG/MIG Welding

Section 5. Gas Welding and Cutting

Section 6. TIG Welding

Section 7. Plasma Cutting

Bonus Section. DIY Welding Projects

Welding Cart

Welded Steel Table

Metal Fire Pit

Deluxe Dog Waterer

Section 8. Special Techniques

Section 9. Soldering

Section 10. Welding Plastics

Section 11. Workshop Techniques

Section 12. Basic Blacksmithing

Appendix 1. What’s in a Name?

Appendix 2. Heat Colors

Appendix 3. Useful Conversions

Отрывок из книги

Introduction

Don’t Take Risks

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Medium carbon steels can be stressrelived after welding by heating the joint area to very dull red and then cooling slowly (see distortion control).

Welding cast iron is covered in Section 4. Preheating gray castings helps a great deal, and low welding heat input followed by slow post-weld cooling are always necessary. Even then, success with cast iron is never completely certain thanks to the material’s tendency to crack as it cools. It’s important to know which cast iron you’re dealing with: malleable cast will cool to brittleness if arc welded, so lowertemperature bronze welding is better. Gray cast will turn to the brittle white form if cooled too quickly.

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