Oxy-Acetylene Welding and Cutting
Electric, Forge and Thermit Welding
Together with Related Methods and Materials Used in Metal WorkingAndThe Oxygen Process for Removal of Carbon
By
HAROLD P. MANLY
PREFACE
In the preparation of this work, the object has been to cover not only theseveral processes of welding, but also those other processes which are soclosely allied in method and results as to make them a part of the wholesubject of joining metal to metal with the aid of heat.
The workman who wishes to handle his trade from start to finish finds thatit is necessary to become familiar with certain other operations whichprecede or follow the actual joining of the metal parts, the purpose ofthese operations being to add or retain certain desirable qualities in thematerials being handled. For this reason the following subjects have beenincluded: Annealing, tempering, hardening, heat treatment and therestoration of steel.
In order that the user may understand the underlying principles and thematerials employed in this work, much practical information is given on theuses and characteristics of the various metals; on the production, handlingand use of the gases and other materials which are a part of the equipment;and on the tools and accessories for the production and handling of thesematerials.
An examination will show that the greatest usefulness of this book lies inthe fact that all necessary information and data has been included in onevolume, making it possible for the workman to use one source for securing aknowledge of both principle and practice, preparation and finishing of thework, and both large and small repair work as well as manufacturing methodsused in metal working.
An effort has been made to eliminate all matter which is not of directusefulness in practical work, while including all that those engaged inthis trade find necessary. To this end, the descriptions have been limitedto those methods and accessories which are found in actual use today. Forthe same reason, the work includes the application of the rules laid downby the insurance underwriters which govern this work as well asinstructions for the proper care and handling of the generators, torchesand materials found in the shop.
Special attention has been given to definite directions for handling thedifferent metals and alloys which must be handled. The instructions havebeen arranged to form rules which are placed in the order of their useduring the work described and the work has been subdivided in such a waythat it will be found possible to secure information on any one pointdesired without the necessity of spending time in other fields.
The facts which the expert welder and metalworker finds it most necessaryto have readily available have been secured, and prepared especially forthis work, and those of most general use have been combined with thechapter on welding practice to which they apply.
The size of this volume has been kept as small as possible, but anexamination of the alphabetical index will show that the range of subjectsand details covered is complete in all respects. This has been accomplishedthrough careful classification of the contents and the elimination of allrepetition and all theoretical, historical and similar matter that is notabsolutely necessary.
Free use has been made of the information given by those manufacturers whoare recognized as the leaders in their respective fields, thus insuringthat the work is thoroughly practical and that it represents present daymethods and practice.
THE AUTHOR.