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William L. Ilgen. Forge Work
Forge Work
Table of Contents
PREFACE
CHAPTER I. Tools and Appliances
CHAPTER II. Forging Operations
CHAPTER III. Practice Exercises
CHAPTER IV. Treatment of Tool Steel
CHAPTER V. Tool Making and Stock Calculation
CHAPTER VI. Steam Hammer, Tools, and Exercises
CHAPTER VII. Art Smithing and Scroll Work
CHAPTER VIII. Iron Ore, Preparation and Smelting
CHAPTER IX. The Manufacture of Iron and Steel
Formulas and Tables (From the “Pocket Companion,” published by the Carnegie Steel Co.)
INDEX [Figures in italics indicate pages upon which illustrations occur.]
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William L. Ilgen
Published by Good Press, 2019
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Punches need not be tempered, because the strength of the steel from which they should be made will withstand the force of the blows, and also because the metal is generally hot when the punches are used; therefore the temper would be quickly drawn out of them. If sheet metal or light material is to be punched cold, it is advisable to harden the punch slightly; then the hole may be punched through from one side, while the metal is held on something containing a hole slightly larger than the punch. This method has the effect of producing a smoothly cut hole, provided the metal is properly placed.
Fig. 12.—The Top and Bottom Swages.
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