| Seen my lady home las' night, Jump back, honey, jump back. Hel' huh han' an' sque'z it tight, Jump back, honey, jump back. Hyeahd huh sigh a little sigh, Seen a light gleam f'om huh eye, An' a smile go flittin' by-- Jum... Read more of A Negro Love Song at Martin Luther King.ca |  InformationalPrivacy |
Steel MakingHardeningSteel is hardened by quenching from above the upper critical.... Compensating Leads By the use of compensating leads, formed of the same materia... Heat Treatment Of Punches And Dies Shears Taps Etc HEATING.--The degree to which tools of the above classes shou... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Fatigue Tests It has been known for fifty years that a beam or rod would fa... Calibration Of Pyrometer With Common Salt An easy and convenient method for standardization and one whi... Introduction Of Carbon The matter to which these notes are primarily directed is the... Application To The Automotive Industry The information given on the various parts of the Liberty eng... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Flange Shields For Furnaces Such portable flame shields as the one illustrated in Fig. 1... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Piston Pin The piston pin on an aviation engine must possess maximum res... Knowing What Takes Place How are we to know if we have given a piece of steel the ver... Preventing Decarbonization Of Tool Steel It is especially important to prevent decarbonization in such... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Effect Of A Small Amount Of Copper In Medium-carbon Steel This shows the result of tests by C. R. Hayward and A. B. Joh... Silicon SILICON is a very widespread element (symbol Si), being an es... Rate Of Absorption According to Guillet, the absorption of carbon is favored by ... Gears The material used for all gears on the Liberty engine was sel... |
Preparing Parts For Local Case-hardeningCategory: CASE-HARDENING OR SURFACE-CARBURIZING At the works of the Dayton Engineering Laboratories Company, Dayton, Ohio, they have a large quantity of small shafts, Fig. 40, that are to be case-hardened at A while the ends B and C are to be left soft. Formerly, the part A was brush-coated with melted paraffin but, as there were many shafts, this was tedious and great care was necessary to avoid getting paraffin where it was not wanted. To insure uniform coating the device shown in Fig. 41 was made. Melted paraffin is poured in the well A and kept liquid by setting the device on a hot plate, the paraffin being kept high enough to touch the bottoms of the rollers. The shaft to be coated is laid between the rollers with one end against the gage B, when a turn or two of the crank C will cause it to be evenly coated. Next: The Penetration Of Carbon Previous: Preventing Carburizing By Copper-plating
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