. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . eralforeman blamed the material. Of material was bad, but not until thisparticular genius put the finishing thus described can be heated with eitheroil or gas and has a capacity of eightboxes 12 ins. wide, 20 ins. long and 8ins. high. The size of the box as amatter of course is governed by the sizeof the articles to be case-hardened. A quick method for case-hardeningconsists in heating the material to behardened up to a red heat and then sub-merging it in a bath of molten cyanideo
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . eralforeman blamed the material. Of material was bad, but not until thisparticular genius put the finishing thus described can be heated with eitheroil or gas and has a capacity of eightboxes 12 ins. wide, 20 ins. long and 8ins. high. The size of the box as amatter of course is governed by the sizeof the articles to be case-hardened. A quick method for case-hardeningconsists in heating the material to behardened up to a red heat and then sub-merging it in a bath of molten cyanideof po,tash, leaving it in from one to fivehours, according to the bulk of ma-terial to be hardened. Cyanide of pot-ash gives off poisonous fumes, conse-quently the vessel containing it shouldbe placed in a furnace with a method is dangerous for the oper-ators and should, if used at all, be usedin a very careful manner. Northern Pacific 4-6-2, Passenger The American Locomotive Companyhave recently supplied the Northern Pa-cific Railroad with a considerableamount ol power and among the en-. SECTION OF BOILER FOR NORTHERN PACIFIC SHOWING COMBUSTION CH.^MBER. and crystaline when it should be fibrousand showing the dark or black appear-ance of its natural structure with a finegrained surface analogous to tool I am employed we do a greatdeal of case-hardening, all of which isdone under my supervision and direc-tion. We case-harden as much as fivetons of material in 24 hours. This re-quires ten furnaces. We are exceeding-ly particular about the treatment, asmuch so as in the treatment of tool steelwhen tempering. Some years ago I was employedwhere the general foreman had chargeof case-hardening. Of course a generalforeman has and should have that righcor privilege. However, this particularindividual thought he was the Onlyin that particular branch. Case-harden-ing was his long suit. He arrivedat his conclusion from the great depthof case or shell of hardnes
Size: 2763px × 904px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
