| Olive Thorne Miller One of the most interesting birds who ever lived in my Bird Room was a blue jay named Jakie. He was full of business from morning till night, scarcely ever a moment still. Poor little fellow! He had been stole... Read more of THE BUSY BLUE JAY at Children Stories.ca |  Informational.caPrivacy |
Steel MakingBrown Automatic Signaling PyrometerIn large heat-treating plants it has been customary to mainta... Manganese MANGANESE is a metal much like iron. Its chemical symbol is M... Preventing Decarbonization Of Tool Steel It is especially important to prevent decarbonization in such... Properties Of Steel Steels are known by certain tests. Early tests were more or l... Knowing What Takes Place How are we to know if we have given a piece of steel the ver... Pyrometers For Molten Metal Pyrometers for molten metal are connected to portable thermoc... Annealing In Bone Steel and cast iron may both be annealed in granulated bone. ... Case-hardening Treatments For Various Steels Plain water, salt water and linseed oil are the three most co... Air-hardening Steels These steels are recommended for boring, turning and planing... Application To The Automotive Industry The information given on the various parts of the Liberty eng... Annealing Work With the exception of several of the higher types of alloy s... Heat Treatment Of Gear Blanks This section is based on a paper read before the American Gea... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... William Kelly's Air-boiling Process An account of Bessemer's address to the British Association w... Rate Of Absorption According to Guillet, the absorption of carbon is favored by ... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Cutting-off Steel From Bar To cut a piece from an annealed bar, cut off with a hack saw,... Highly Stressed Parts The highly stressed parts on the Liberty engine consisted of ... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... |
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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