| I love dreams where one doesn't have sex, but there's a knowing checmistry and you feel, when you wake up, that it's been better than sex alone. My dream last night was a good friend (colleague) and I taking photo's of a fantastic lightning storm ou... Read more of Taking 'Photos at My Dreams.ca |  Informational.caPrivacy |
Steel MakingCrankshaftThe crankshaft was the most highly stressed part of the entir... The Theory Of Tempering Steel that has been hardened is generally harder and more br... Critical Points One of the most important means of investigating the properti... Suggestions For Handling High-speed Steels The following suggestions for handling high-speed steels are ... Short Method Of Treatment In the new method, the packed pots are run into the case-har... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... Annealing In Bone Steel and cast iron may both be annealed in granulated bone. ... Bessemer Process The bessemer process consists of charging molten pig iron int... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Heat Treatment Of Gear Blanks This section is based on a paper read before the American Gea... Heat-treating Equipment And Methods For Mass Production The heat-treating department of the Brown-Lipe-Chapin Company... Plant For Forging Rifle Barrels The forging of rifle barrels in large quantities and heat-tre... Heat Treatment Of Milling Cutters Drills Reamers Etc THE FIRE.--Gas and electric furnaces designed for high heats ... The Forging Of Steel So much depends upon the forging of steel that this operation... Crucible Steel Crucible steel is still made by melting material in a clay or... The Thermo-couple With the application of the thermo-couple, the measurement of... Tempering Round Dies A number of circular dies of carbon tool steel for use in too... Preventing Cracks In Hardening The blacksmith in the small shop, where equipment is usually ... Non-shrinking Oil-hardening Steels Certain steels have a very low rate of expansion and contract... Nickel-chromium A combination of the characteristics of nickel and the charac... |
Effect Of A Small Amount Of Copper In Medium-carbon SteelCategory: ALLOYS AND THEIR EFFECT UPON STEEL This shows the result of tests by C. R. Hayward and A. B. Johnston on two types of steel: one containing 0.30 per cent carbon, 0.012 per cent phosphorus, and 0.860 per cent copper, and the other 0.365 per cent carbon, 0.053 per cent phosphorus, and 0.030 per cent copper. The accompanying chart in Fig. 13 shows that high-copper steel has decided superiority in tensile strength, yield point and ultimate strength, while the ductility is practically the same. Hardness tests by both methods show high-copper steel to be harder than low-copper, and the Charpy shock tests show high-copper steel also superior to low-copper. The tests confirm those made by Stead, showing that the behavior of copper steel resembles that of nickel steel. The high-copper steels show finer grain than the low-copper. The quenched and drawn specimens of high-copper steel were found to be slightly more martensitic. Next: High-chromium Or Rust-proof Steel Previous: Non-shrinking Oil-hardening Steels
Viewed 817 |
||||||||||||||||||||
