Handbook of Mold, Tool and Die Repair Welding

Handbook of Mold, Tool and Die Repair Welding
Steve Thompson
Contents
Preface
Acknowledgements
Introduction
1 How to Use This Book
Can You Tig Weld?
Weld Procedure
Review
2 Writing Your Weld Procedure
Why You May Need a Weld Procedure
Collecting Your Information
Weld Procedure 1
Weld Procedure 2
Weld Procedure 3
Weld Procedure 4
3 Identification of Material
Tool Steels
Hrc File Check
Tool Coppers
Tool Aluminum
4 Choosing Your Filler Wire
Buying Filler Wires
Choosing Filler Wires
General Color Match
Photo/acid Etch
Cheapest Filler
Hardness (Hrc)
Butter/crack Repair
Filler Wires for Tool Coppers
Tab Testing on Aluminum and Copper Tools
5 Heat Control
Pre- Heats
Cooling
Heat Sources
Pre-heating
Oven Heating
Heating Larger Tools
Post-heat Treatment
Pre-heatingaluminum and Copper
Minimizing Pre-heats on Aluminum and Copper
6 Weld Techniques
Weld Procedures
Cracking
Previous Bad Weld Repairs
Sink
Under Cut (Notches)
Building Pads of Weld
Preparing a Tool for a Pedestal Pad
Porosity (Pin/blow Holes)
Arc Marks (Earthingand Protecting Sensitive Areas)
Using Heat Soaks and Flood Supports
Getting Around Bad Access
Bending Tungsten
Controlling Distortion
Welding Without Full Pre-heat
Welding Case-hardened Tools
Welding Photo/acid Etched and Polished Tools
Using Base Metal as Filler Wire
Welding Fine Details
Filler Wire
7 Equipment
Safety
Safety Wear
Keeping Your Work Place Tidy
Power Tools
Welding Equipment
Setting Up Your Equipment
Control Panels
Other Equipment
8 Basic Tig Welding for Beginners
Holding Your Torch
Torch Angles
Striking Your Arc
Using Your Filler Wire
Welding Exercises
Appendix I
Appendix Ii
Appendix I L L
Appendix Iv Temperature Conversion Table
Appendix V Hardness Conversion Chart
Other Steels and Tool Steels
Elements and Their Symbols
Millimeters to Inches Conversion Table
Weld Procedure Sheet
Index
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