Press enter after choosing selection

Improvement In Iron And Steel Making

Improvement In Iron And Steel Making image
Parent Issue
Public Domain
OCR Text

Jacoli, thewell-knownscientist, metall urgist, and inventor, of Pittsburg, l'a., funiishes the following interesting items on the above subject to the American Mtn-liinist: "Two liundred years ago, wrought iron was only m;ule by tho Catalán process, the product being known as charcoal blooms. By the ordinary Catalán process it required two hours to convert 300 pounds of cast iron into wrought iron. and requiied 300 luisliels if charcoal to the ton of blooms. "The puddling process, in venled by Ilenry Gort, and hnproved by Samuel Rodgers, will convert 500 pounds of cast iron tato wronght iron in two hours, wHli in expenditure of ten busliels of conl to eaoli ton of Bbrous wrouglit iron. "By the improved Besserner process 1 uu now enabled to convert ten tons of cast iron into flbrous wrought iron in tvventy minutes, at an expenditure of ten bushels of coal to e$ch ton of ftbrous wrought iron ingots produced. "Five years ago Sir Henry Bessemer and all the leading metallurgical experts of the world considered it iinpossible to remove phosphorus froni the metal by the Bessemer process, consequently no metal could bo used in tlie converter which cont;iined over onetenth of 1 per cent of phosphorus. Now, by the basic improvements to the IVhsenier process, metal containing from 2 to 3 per cent of phosphorus niay be treated in a converter to advantage, and i steel produced more free from phosphorus and better in every respect than that jroduced by Jiessemer's acid process. "The oltl niethod of making spikes was by rolling apile down to a nxl of Buitable size, to do which reqnired a man to rough down and another to rough up, and another to roll, and another to catch, and two boys to straighten the rods, and a man to spear the rods into suitable length, and a man to wcigh, and a laborer to carry tlii'in to the spike factory, where one end of the rods were licated and fed - one spike-length into tho spike-machine at a time, one machino making froin three to five tons per day. "Now, we have ín Pittsburg a continuoHS spike-niill, at oae end of whibb the heater inserta the pile or billet. By the automatic action of the machine it is drawn forward and reduced on all sides, nntil it emerges froin the other nd in shape suit.-iblo for a spike. The riid ís then cut in two pieces of equal lengths, and the ends so cut inserted into two self -feeding machines and made inlo spikes, which are eaught by an archlmedlan condnit, and dolivered red hot, at the poiiit desired for piking, and this at the rate of eighty tons per day."


Old News
Ann Arbor Democrat