Metalwork Essentials |
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Page 149
... molten metal to make castings . The making of molds and castings is an important branch of the great metalworking industry . One needs only to look around to see the general use of molding , for many small as well as large objects in ...
... molten metal to make castings . The making of molds and castings is an important branch of the great metalworking industry . One needs only to look around to see the general use of molding , for many small as well as large objects in ...
Page 168
... MOLTEN SLAG CINDER NOTCH MOLTEN IRON PEEP HOLE TROM NOTCH Fig . 261. Section of a blast furnace showing charge and operation of alternate layers of iron ore , coke , and. 168 METALWORK ESSENTIALS.
... MOLTEN SLAG CINDER NOTCH MOLTEN IRON PEEP HOLE TROM NOTCH Fig . 261. Section of a blast furnace showing charge and operation of alternate layers of iron ore , coke , and. 168 METALWORK ESSENTIALS.
Page 169
... molten pig iron sinks to the bottom of the furnace . Here it is drawn off from the iron notch about every 4 hours . Each draw yields many tons of pig iron and takes about 30 minutes . Bessemer Process of Making Steel . The molten pig ...
... molten pig iron sinks to the bottom of the furnace . Here it is drawn off from the iron notch about every 4 hours . Each draw yields many tons of pig iron and takes about 30 minutes . Bessemer Process of Making Steel . The molten pig ...
Contents
UNIT | 1 |
TO BEND BRAKE SHEET Metal | 31 |
TO FORM CURVES CYLINDERS AND CONES IN SHEET METAL | 37 |
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adjustable alloys aluminum solder angle anvil applied bar folder bench drills blast furnace brace brass brazing burrs center punch clamped clean coating cold chisel combination square common countersink countersunk curve desired diameter double seam drag edge electric fastening finish flat gauge grinding grooved seam hammer-marked heat hold iron jaws joint lacquer lap seam length mallet mark material measure melt metal bar metalwork method mold molding sand molten monkey wrench necessary number of threads oxidation pattern piece of metal pig iron pipe planishing plate proper Punching holes removed rivet set rods round rule sal ammoniac sand scratch awl Select self-tapping shape shear sheet metal shown in Figure shows snips soft soldering copper spelter square stake steel strike STUDY QUESTIONS surface tap wrench thickness thread pipe tightly tool turn twist twisting metal Unit vise wheel wire