. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . r-dinary iTiachine-stcel shanks. Thus oldworn out high-speed steel tools can becut to proper size and utilized for tipsand this brings with it a great saving. Briefly, the process for welding tips toshanks for tool steel is as follows: Thehigh-speed steel tip is lirst tacked tothe machine-steel shank, and the wholeis heated. After fluxing with borax,welding is begun. .After welding, the toolis immediately laid in mica dust to grad-ually cool. It is then given a first grind-ing and is tempered
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . r-dinary iTiachine-stcel shanks. Thus oldworn out high-speed steel tools can becut to proper size and utilized for tipsand this brings with it a great saving. Briefly, the process for welding tips toshanks for tool steel is as follows: Thehigh-speed steel tip is lirst tacked tothe machine-steel shank, and the wholeis heated. After fluxing with borax,welding is begun. .After welding, the toolis immediately laid in mica dust to grad-ually cool. It is then given a first grind-ing and is tempered, after which thefinish grinding is accomplished, when thetool is ready for use. Thus the processis a simple one. The illustration showsthe various steps in the process—No. 1,tacked to shank; No. 2, tool after weld-ing; No. 3, as it appears after first grind-ing, and No. 4, the tool ready for use,after tempering and finish grinding. Tooldesignated No. 5 was tested for strengthof weld by hammering, and it broke abovethe weld. The reinforcing metal which isbuilt out and around the tip, serves both. sleel shanks for many of its planers andlathes, has found the electric arc processof weliling very satisfactory, and muchcheaper than any other process. Thisconclusion has been reached after testsemploying other methods. The ordinaryelectric arc welding cf|uipmcnt made bythat company may be used, and is thesame as that required for the welding orrepair of castings, hor the best rcsnitithe current for this work should be ap-
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