. Railway age gazette . hereis no slotting work necessary. Up until the time we designedthis die, this piece was forged solid at the steam hammer, andthe center was slotted out in the machine shop. The cost for September. 1914 RAILWAY AGE GAZETTE, MECHANICAL EDITION 483 slotting exceeded the cost of the complete jaw, as it is nowmade in the forging machine in the smith shop. I recently com-pleted 100 of these jaws. This work is done on a 2^ Fig. 6 shows dies designed to form the back end of the backflue sheet brace. This piece is first roughed out under the steamhammer, then taken
. Railway age gazette . hereis no slotting work necessary. Up until the time we designedthis die, this piece was forged solid at the steam hammer, andthe center was slotted out in the machine shop. The cost for September. 1914 RAILWAY AGE GAZETTE, MECHANICAL EDITION 483 slotting exceeded the cost of the complete jaw, as it is nowmade in the forging machine in the smith shop. I recently com-pleted 100 of these jaws. This work is done on a 2^ Fig. 6 shows dies designed to form the back end of the backflue sheet brace. This piece is first roughed out under the steamhammer, then taken to the machine and upset and punched atthe same heat. This makes a very clean piece of work ascompared with making by hand. The hole is punched with oneblow, by doing which the metal is much less liable to be fracturedthan if done by hand. The work is done on a ZYz in. machine. DROP FORGING The gist of the papers and discussion on this subject is asfollows: Many times fully as good work may be accomplished Finished Rino. rig. 3—Dies for Bending Steam Pipe Rings -imder the steam hammer as is done with drop forge shops that do operate this class of machinery, however,have found that considerable saving can be made by the properdesign of dies where there is a large quantity of work to bemade. In small orders that do not require a large quantity,cast iron dies are used with very good success, although it isstated that they do not give the finish that a steel die does. Castiron dies are good for rough work and for blanking out workthat requires two operations. Where standards are maintainedthroughout the system the drop forging machines may be usedto great advantage with a minimum number of dies. One mem-T)er uses scrap axles for dies and finds that they will give to pieces. From SO point to 60 point carbon wasrecommended as being the best steel for dies. Numerous cases were cited where it was found impossibleto get machine shops to furnish the dies
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1913
