A Treatise on Roll-turning for the Manufacture of IronD. Van Nostrand, 1869 - 96 páginas |
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Página 8
... increase the percentage of scrap and imperfect bars ; therefore , they are seldom used . * 6. SPIRAL PASSES are those in which the bottom of the pass is not a circle but a spiral , which , more or less , nearly ap- proaches a circle ...
... increase the percentage of scrap and imperfect bars ; therefore , they are seldom used . * 6. SPIRAL PASSES are those in which the bottom of the pass is not a circle but a spiral , which , more or less , nearly ap- proaches a circle ...
Página 11
... increase the reduction , as well as to assist in shaping . The number of these shaping passes varies greatly . In the case of the simpler forms they are constructed as the last preparatory or roughing passes , but when compli- cated ...
... increase the reduction , as well as to assist in shaping . The number of these shaping passes varies greatly . In the case of the simpler forms they are constructed as the last preparatory or roughing passes , but when compli- cated ...
Página 12
... increase the width of some part of the bar rolled through them . To this end , they must exert a considerable draw , and in this respect , as well as in their position , they are ranged with the edging passes . They are extensively used ...
... increase the width of some part of the bar rolled through them . To this end , they must exert a considerable draw , and in this respect , as well as in their position , they are ranged with the edging passes . They are extensively used ...
Página 14
... increase of length , we may call this pressure the draw pressure . The difference in section between successive passes is called the draw or draught , and is occasioned mainly by the difference in height of the respective passes . It is ...
... increase of length , we may call this pressure the draw pressure . The difference in section between successive passes is called the draw or draught , and is occasioned mainly by the difference in height of the respective passes . It is ...
Página 15
... increasing the width of the successive grooves may be par- tially and even wholly avoided , by slightly increasing the width of each groove from the bottom of the same , outwards . This construction enables the pass to take in easily a ...
... increasing the width of the successive grooves may be par- tially and even wholly avoided , by slightly increasing the width of each groove from the bottom of the same , outwards . This construction enables the pass to take in easily a ...
Otras ediciones - Ver todas
A Treatise on Roll-Turning for the Manufacture of Iron Peter Tunner,John Barnard Pearse Sin vista previa disponible - 2016 |
Términos y frases comunes
angle iron applied arcs arrangement AUSTRIAN INCHES beams body-fillets bottom roll Bridge Cannelure Carinthia closed passes Cloth collars construction contain corners cylinders described diamond passes drawing passes edge pass edition Engineer ENGLISH INCHES engravings equal fillet finishing passes finishing rolls fins flange flat bars flatting pass former Frantschach Gothic passes grooves guides heat heavy horizontal Hypsometry Illustrated inches wide J. P. WHITNEY JULIUS WEISBACH last pass latter length Leoben manufacture metal method necessary necks notches open passes oval passes pair of rolls passes in full PASSES.-These pile pitch line position puddle bar puddle rolls radius rails reduced roll-turning roughing passes roughing rolls round pass screws shaping passes shown in Fig side spike spindle steady rest Steam Steam Engine steel STRENGTH OF MATERIALS Styrian three high tion top roll train turned tyre U. S. Navy Upper Silesia vertical Water welding width wood-cuts ZERAH COLBURN
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