Introduction to Brazing Technology: 1st Edition (Hardback) book cover

Introduction to Brazing Technology

1st Edition

By P.M Roberts

CRC Press

340 pages | 17 Color Illus. | 158 B/W Illus.

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pub: 2016-04-20
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Introduction to Brazing Technology provides practical guidance for the industrial production of an effectively brazed joint. Written in plain language by an active technical consultant with more than 50 years of brazing experience, this clear and concise book:

  • Explains the fundamental concepts of the brazing process
  • Covers all the common heating methods used for brazing
  • Describes how to obtain brazing operator accreditation
  • Addresses the latest advances in brazing technology
  • Features an extensive glossary of brazing terms
  • Underscores the importance of the joint gap
  • References EN and ISO standards

Introduction to Brazing Technology ensures a good working knowledge of the application of brazing as an industrial joining technique. The book offers new and existing users of the technology a comprehensive reference for tackling the day-to-day challenges encountered during the brazing process.


"Comprehensive and thorough brazing process guidelines are illustrated with practical examples supported by good reference data. These carefully described logical steps define the ‘rules’ for successful brazing. … This book will no doubt become a ‘go-to reference’ for those involved in running a brazing process."

—Dr. D. K. Hawksworth, President, Diomedea, Inc.

"…having known the author for 49 years, and [having] participated in numerous technical meetings and conferences, I feel eminently qualified to enthusiastically recommend to the reader the quality and quantity of information to be gleaned from this book. The addition of a glossary is a very worthwhile tool to this excellent book."

—Mel Schwartz, Author, Consultant, Technical Writer

"The book ensures a good working knowledge of the application of brazing as an industrial joining technique. It offers new and existing users of the technology a comprehensive reference for tackling the day-today challenges encountered during the brazing process."

Welding and Cutting, 2016

“This comprehensive book on brazing technology would be an excellent choice for anyone wanting to learn about the brazing process, as well as for those already involved with brazing who need an excellent reference guide. It contains information on new aluminum brazing methods, corrosion of stainless steels, new fuel gases, new alloys and flux codes, and ISO specifications. As a troubleshooting guide alone, it is well worth purchasing.”

IEEE Electrical Insulation, September/October 2016

"Introduction to Brazing Technology, written by P.M. Roberts, is one of the most complete books available to brazing practitioners. This edition has numerous explanations and valuable practical information. Overall, the text remains a must as a learning tool and its clear relevance to real-world industry practices makes it useful for both students and practitioners."

—Annals of "Dunarea de Jos" University of Galati Fascicle XII, Welding Equipment and Technology, Volume 27, 2016

Table of Contents

Process Fundamentals and Operator Safety

Setting the Scene


Capillary Flow

Health and Safety in Brazing

Where Brazing Fits in Joining Technology

Which Specific Process Should Be Used?

What Are the Advantages of Brazing?

Basic Definitions and Principles

Capillary Attraction and Capillary Flow

Solidus, Liquidus, Melting Range and Eutectic

Working Temperature


Process Window

Heat Pattern Development


Component Cleanliness

Summary: Fundamental Rules for Successful Brazing

Joint Design Fundamentals


Basic Joint Design Configurations

Atmosphere Furnace Brazing

Filler Materials, Fluxes and Brazing Paste Fundamentals


Aluminium-Base Filler Materials

Silver-Base Filler Materials

Self-Fluxing CuP and AgCuP Alloys

Copper-Brazing Filler Materials

High-Temperature Nickel (and Cobalt) Filler Materials

Unclassified Platinum-Group Metal Filler Alloys

ISO Standardised Noble-Metal-Bearing Filler Materials

Brazing Fluxes

Brazing Alloy Pastes

Brazing with Flames

Torches for Manual Flame Brazing

Flame Process Relationships

Heating with Flames

Gases and Gas Mixtures

Hand-Torch-Brazing Technique

Automated Flame-Brazing Machines

Process Complexity

Induction and Resistance Heating


What Induction Heating offers in Brazing

Commonly Used Inductor Shapes

Design of Joints and the Associated Inductors

Resistance Heating

Furnace Brazing


Oxide Films

Brazing in a Reducing Atmosphere

Types of Furnaces Used for Brazing

Brazing in Vacuum

Vacuum Brazing Process Parameters

Further General Comments on Vacuum Brazing

Vapour Pressure

Brazing Aluminium

Introduction to the Technology of Aluminium Brazing

Use of Brazing for the Joining of Aluminium and its Alloys

Troubleshooting and Some Common Brazing Problems

Identification of the Problem

Methodology of Troubleshooting

Are You Asking Yourself the Right Questions?


Seeking Advice

Frequently Asked Questions

Is It Possible to Braze Ceramics?

Can I Braze to the Surface of an Electroplated Item?

Which Filler Material Will Be Best for the Brazing of Tungsten Carbide Teeth to Circular Saw Blades?

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

Can Contact with Ammonia Result in the Corrosion of a Joint?

What Is the Maximum Temperature at Which a Brazed Joint Can Be Safely Used?

Can Tool Steels Be Brazed?

What Is Crevice Corrosion?

What Is the Trillium Project?

Accreditation of Brazing Operators


Normative References

Approval of the Parts to Be Joined by Brazing

Terms and Definitions

Information and Requirements to be both agreed upon and Documented

Brazing Variables

The pBPS

Stage 4: Approval of Operators

Test Pieces and Test Specimens

Examination and Testing

Range of Approval

Brazing Procedure Approval Record

Importance of the Joint Gap in Brazing

Some Initial Points about Brazing When a Flux Is Used

Some Initial Points about Fluxless Brazing Processes

Contribution of the Brazing Gap to Process Control

Brazing in conjunction with Flux

Process Parameters for the Use of Flux

High-Temperature Brazing in conjunction with a Flux

Fluxless Brazing Processes

Filler Metal Pre-Placement: Sandwich Joints

Conventional Pre-Placement of Filler Material


Addendum A: SafeFlame®

Appendix A: Selection Charts

Appendix B: Filler Metal Comparison Tables

About the Author

P. M. Roberts first encountered the brazing process when he joined Johnson Matthey and Company Limited in 1956 to train as an assayer of industrially used silver alloys and silver-containing brazing filler materials. In 1958, he changed departments and trained as a process control metallurgist, and studied the intricacies and the technology of the subject at Battersea Polytechnic, the forerunner of Surrey University. In 1963, an opportunity arose for him to join the Sales Technical Services Department of Johnson Matthey Metals to be trained as a specialist brazing engineer. During the next 30 years, he held a sequence of technical posts that provided support to the customers of three of the four leading producers of brazing materials in the Western world, and gained hands-on practical experience in the specification and use of automated brazing equipment and continuous-conveyor brazing furnaces. Between 1993 and 1996, he was the manager of the Precious Metals Division of the UK Branch of Degussa AG. He took early retirement on his 60th birthday in 1996, and created Delphi Brazing Consultants, a small but specialised business that is still in operation. This change of role on his retirement has been instrumental in his being able to write and help clients around the world solve brazing problems.

Subject Categories

BISAC Subject Codes/Headings:
TECHNOLOGY & ENGINEERING / Industrial Design / General