| Show composition AND FORMATION OP or STEEL steen before a recent meeting of the baston biston natural historical society ir dr jackson gave pave an all account of some into the composition and manner of formation of different kinds of steel As commonly known sted isa iga combination of carbon ana aront iron made by heating flat bars ct of pure iron in combination with charcoal chal chai coal the carbon is first converted convert ell cil into ooyd of carbon and then unites with the file iron as carburet the result of this process i known as blistered steel from the he bubbles gei gel prated by gaes gages upon its surface shear steel consists of parallel plates of pure iron and teel steel welded by folding and uniting qunitin the bars of blistered steel cast steel is f tied filled in pots ot of the most refractory material and differs differ from east cast iron which likewise contained con carbon in this respect that cast east iron is a mixture of carse aggregated gre re matters graphite and iron while cast steel is a chemical combination of carbon and iron from the researches of berthier it is known that manganese will form an alloy with iron when iron is mingled with a considerable proportion of manganese a brittle compound compo urd result results but when comb combined ined inee with a very iery smail small sl proportion of manganese a steel of very vey fine is is obtained which has this advantage carbon steel carbon steel becomes coarse when tempered in thick masses from se gation rogation of the particles of carbon b but ut no such trouble le at aches hes with wilh ste steel A parties in england have lately introduced excellent wire for pianoforte piano plano foi for foite fe string siring si rings made mado of this kind of steel as well ns as for cutting instruments and other purposes in thew ire irp dr jackson has feind one and a half per cent of manganese and end has established he be fact that it resists to a very avery remarkable degi degl deglee ee the action of ha hydrochloric acid exteen years since since iron lion was manufactured by mr liborn into very hard and fine steel this steel required rf tempering at a lower heat beat than carbon steel many of our irons might be manufactured manufacture dinto into steel by the simple i IMP process of fusion ald arid a steel of uniform cliar chat a acter ter might be made without previous tion t on with ith carbon carbou ex |
