Industrial Brazing Practice

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.

The Fundamentals of BrazingIntroductionWhere Does Brazing Fit in Joining Technology?Reviewing the Brazing ProcessBrazing TerminologyDesigning for BrazingJoint Overlap LengthButt JointsStress DistributionTube-to-Tube Sleeve JointsElectrical ConductivityPressure TightnessSurface FinishOptimum Joint GapsBrazing Alloy PreplacementPreformed Wire RingsPreplaced Washers and FoilsSlugs and Cropped Wire PiecesBrazing Alloy PastesThe Ten Golden Rules for Successful Joint DesignJigs and FixturesBrazing Filler Materials and FluxesThe First StepThe Temperature Ranges Widely Used for BrazingClass Al: Aluminum and Magnesium Brazing Filler MaterialsClass Ag: Silver Brazing Filler MetalsClass CuP: Copper-Phosphorus Brazing Filler MetalsClass CU: Copper Brazing Filler MaterialsClasses Ni: Nickel (and Cobalt) Brazing Filler MetalsUnclassified Platinum-Group Metal Filler AlloysClasses PD and AU: The Noble-Metal Filler AlloysBrazing FluxesFuel Gases and BurnersFlame Brazing Complexity ScaleHeating and FlamesGases and Gas MixturesBurner Design and Operational ParametersPilotageBurner EfficiencyBrazing with FlamesFlame Brazing by HandAutomated Flame BrazingSummaryInduction and Resistance BrazingInduction HeatingResistance HeatingFurnace BrazingFurnace AtmospheresOther Types of Brazing FurnacesVacuum BrazingImportant Operational ProceduresBrazing with Filler Material PastesAliphatic CompoundsAromatic CompoundsPotential DrawbacksPaste CharacteristicsUsing Pastes in Reducing Atmosphere Furnace BrazingUsing Pastes in Vacuum Brazing ApplicationsBrazing AluminumParent Metal ConsiderationsProperties of AluminumJoint Design CriteriaBrazing Filler MaterialsMetallurgical ConsiderationsCommonly Used Brazing ProcessesRecent DevelopmentsBrazing Commonly Used MaterialsCopper and Its AlloysBrazing SteelsTool SteelsStainless SteelsBrazing Cast IronTungsten CarbideQuestion TimeIs 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 AuditingSummary: The Fundamental Principles of the Brazing ProcessThe Practical Application of the Process AuditThe Process Efficiency AuditAppendix I: Selection ChartsAppendix II: Filler Metal Comparison TablesIndex

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.