. Canadian foundryman (1918). the best method of reduc-ing ingots to blooms, it is best to effectmost of the reduction in butt-to-headpasses, and a marked improvement incrop reduction is obtained by thismethod of rolling, especially when thepiped section is confined to the upper20 per cent, of the ingot. Irrespectivecf any heating and mill practice whichit may be desired to use at any speci-fied mill, the physical condition of coldingots split open for inspection is un-doubtedly the true index to the valueof any method for producing sound,homogeneous steel. Ideal Considerations It is maintaine
. Canadian foundryman (1918). the best method of reduc-ing ingots to blooms, it is best to effectmost of the reduction in butt-to-headpasses, and a marked improvement incrop reduction is obtained by thismethod of rolling, especially when thepiped section is confined to the upper20 per cent, of the ingot. Irrespectivecf any heating and mill practice whichit may be desired to use at any speci-fied mill, the physical condition of coldingots split open for inspection is un-doubtedly the true index to the valueof any method for producing sound,homogeneous steel. Ideal Considerations It is maintained that the theoreticallyideal method of making sound, homo-geneous steel is undoubtedly with thebig-end-up mold, because the increasing-ly large area of the ingot towards thetop compensates automatically for anyirregularities in the temperature of thesteel or in the teeming practice. The photograph Fig. 2 shows a splitingot produced by the Gathmannmethod under normal conditions with thebig-end-up practice, the crop for piped. FIG. 5 June, 1918 CANADIAN FOUNDRYMAN 135 section being approximately 5 per inventor recommends in the usualmill practice where cars or bogies areused for carrying the molds, the heavy-walled body, light-walled top, big-end-down mold, as shown in Figs. 3 and 4and also the use of a suspended sink-head of non-conducting material to fullycompensate for the contraction in theupper portion of the ingot.
Size: 1373px × 1821px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjec, booksubjectfoundries
