Industrial Brazing Practice: 2nd Edition (Hardback) book cover

Industrial Brazing Practice

2nd Edition

By Philip Roberts

CRC Press

460 pages | 11 Color Illus. | 183 B/W Illus.

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pub: 2013-03-27
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In the past ten years, brazing technology has undergone sweeping changes. Yet because there are so few practitioners who understand the finer points of the technology, many of the companies that use brazing as their preferred metal-joining procedure are failing to use it to best effect. Fully updated to reflect the latest practices, this second edition of Industrial Brazing Practice helps you develop the most effective brazing procedure for your particular needs. It reveals the six simple rules of brazing and explains how they impact essential brazing procedures. These rules effectively form the bedrock of problem-solving procedures in this field.

Written by an expert with more than 50 years of experience, the book combines fundamental principles with practical, hands-on advice. The author highlights the intrinsic versatility of the brazing process and covers a wide range of conditions and technical possibilities. He walks you through the nine stages of the process audit, from identifying service conditions, to selecting materials and design, to assessing process complexity. A chapter answers frequently asked questions such as "is it possible to braze ceramics" and "what is MIG brazing?"

New in This Edition

  • Information on new ISO specifications for brazing filler materials
  • New alloy and flux codes
  • New production developments in available fuel-gases for brazing, such as SafeFlame
  • New sections on carbon potential of furnace atmosphere and quality control parameters for vacuum brazing
  • New production methods in aluminum brazing
  • Expanded coverage of interfacial corrosion in stainless steels
  • More case studies

This comprehensive book contains the information needed to enable you to develop best-practice solutions to the daily brazing problems you may encounter in the production shop. Packed with flowcharts, illustrations, and case studies, it is an invaluable reference for anyone involved in industrial brazing.


"This second edition of Industrial Brazing Practice offers valuable support based on decades of practical experience provided by one of the most recognized experts in this field. It offers the budding brazing practitioner a guide to help respond to a given brazing task systematically and solve it successfully. This book should find its permanent place on the desk of any brazing operator."

—Dr. Harald Krappitz, Innobraze GmbH

"Philip Roberts brings the reader an industry background spanning six decades. His perspective provides a hands-on vs. theoretical understanding of brazing fundamentals and practice. His format for evaluating brazing applications will be helpful to anyone involved in producing brazed assemblies. This is a good reference book for inclusion in every brazing library."

—Robert Henson, Harris Products Group

"This book is a comprehensive collation of the fundamental principles, theory and applied practice of brazing technology. It places the evolution of brazing technology and current industrial brazing practices in historical context. It is an invaluable reference for managers, engineers, technicians and students involved in modern-day industrial brazing."

—Dr. D.K. Hawksworth, Sapa AB

Table of Contents

The Fundamentals of Brazing


Where Does Brazing Fit in Joining Technology?

Reviewing the Brazing Process

Brazing Terminology

Designing for Brazing

Joint Overlap Length

Butt Joints

Stress Distribution

Tube-to-Tube Sleeve Joints

Electrical Conductivity

Pressure Tightness

Surface Finish

Optimum Joint Gaps

Brazing Alloy Preplacement

Preformed Wire Rings

Preplaced Washers and Foils

Slugs and Cropped Wire Pieces

Brazing Alloy Pastes

The Ten Golden Rules for Successful Joint Design

Jigs and Fixtures

Brazing Filler Materials and Fluxes

The First Step

The Temperature Ranges Widely Used for Brazing

Class Al: Aluminum and Magnesium Brazing Filler Materials

Class Ag: Silver Brazing Filler Metals

Class CuP: Copper-Phosphorus Brazing Filler Metals

Class CU: Copper Brazing Filler Materials

Classes Ni: Nickel (and Cobalt) Brazing Filler Metals

Unclassified Platinum-Group Metal Filler Alloys

Classes PD and AU: The Noble-Metal Filler Alloys

Brazing Fluxes

Fuel Gases and Burners

Flame Brazing Complexity Scale

Heating and Flames

Gases and Gas Mixtures

Burner Design and Operational Parameters


Burner Efficiency

Brazing with Flames

Flame Brazing by Hand

Automated Flame Brazing


Induction and Resistance Brazing

Induction Heating

Resistance Heating

Furnace Brazing

Furnace Atmospheres

Other Types of Brazing Furnaces

Vacuum Brazing

Important Operational Procedures

Brazing with Filler Material Pastes

Aliphatic Compounds

Aromatic Compounds

Potential Drawbacks

Paste Characteristics

Using Pastes in Reducing Atmosphere Furnace Brazing

Using Pastes in Vacuum Brazing Applications

Brazing Aluminum

Parent Metal Considerations

Properties of Aluminum

Joint Design Criteria

Brazing Filler Materials

Metallurgical Considerations

Commonly Used Brazing Processes

Recent Developments

Brazing Commonly Used Materials

Copper and Its Alloys

Brazing Steels

Tool Steels

Stainless Steels

Brazing Cast Iron

Tungsten Carbide

Question Time

Is It Possible to Braze Ceramics?

Can I Braze to a Plated Surface?

Can Brass Be Successfully Brazed without Flux in a Reducing-Atmosphere Furnace?

Is It Good Practice to Braze Tungsten Carbide Tips to Circular Saw Blades with a Brazing Alloy Conforming to ISO 17672: 2010 Types Cu 470 to Cu 773?

Will There Be Problems with Brazed Joints That Are in Contact with Ammonia in Service?

What Is MIG Brazing?

What Is the CuproBraze® Process?

The Methodology of Process Auditing

Summary: The Fundamental Principles of the Brazing Process

The Practical Application of the Process Audit

The Process Efficiency Audit

Appendix I: Selection Charts

Appendix II: Filler Metal Comparison Tables


About the Author

Philip Roberts owns and operates Delphi Brazing Consultants. He joined Johnson Matthey and Co. Ltd in 1963; so began his 50-year association with the promotion of the principles of "best practice" brazing. During the next 30 years, he occupied a number of marketing and technical posts with the three (then) primary suppliers of precious metal brazing alloys and other silver-bearing products, namely Johnson Matthey, Engelhard Industries, and Degussa AG. In 1996, he created Delphi Brazing Consultants. He is chairman of BSI WEE/19 and CEN/TC121- SC8—involved with British and European Standards, respectively, for technical matters related to all facets of the brazing process. Since 1998, he has been chairman of the European Association for Brazing and Soldering and, since 2006, he has been the principle UK expert on ISO/ TC44-WG3, a group of international brazing specialists who are responsible for the generation and/or revision of new international brazing standards.

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