| A ghost in a haunted house is seldom observed with anything like scientific precision. The spectre in the following narrative could not be photographed, attempts being usually made in a light which required prolonged exposure. Efforts to touc... Read more of The Lady In Black at Scary Stories.ca |  InformationalPrivacy |
Steel MakingSteel Worked In Austenitic StateAs a general rule steel should be worked when it is in the a... Machineability Reheating for machine ability was done at 100 deg. less than ... High-carbon Machinery Steel The carbon content of this steel is above 30 points and is ha... Uses Of The Various Tempers Of Carbon Tool Steel DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres... The Pyrometer And Its Use In the heat treatment of steel, it has become absolutely nece... Protective Screens For Furnaces Workmen needlessly exposed to the flames, heat and glare from... Highly Stressed Parts The highly stressed parts on the Liberty engine consisted of ... Crucible Steel Crucible steel is still made by melting material in a clay or... High-chromium Or Rust-proof Steel High-chromium, or what is called stainless steel containing f... 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... Refining The Grain This is remedied by reheating the piece to a temperature slig... Annealing ANNEALING can be done by heating to temperatures ranging from... Suggestions For Handling High-speed Steels The following suggestions for handling high-speed steels are ... Non-shrinking Oil-hardening Steels Certain steels have a very low rate of expansion and contract... Preventing Decarbonization Of Tool Steel It is especially important to prevent decarbonization in such... Heat Treatment Of Axles Parts of this general type should be heat-treated to show the... Air-hardening Steels These steels are recommended for boring, turning and planing... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Sulphur SULPHUR is another element (symbol S) which is always found i... Double Annealing Water annealing consists in heating the piece, allowing it to... |
Air-hardening SteelsCategory: FURNACES These steels are recommended for boring, turning and planing where the cost of high-speed seems excessive. They are also recommended for hard wood knives, for roughing and finishing bronze and brass, and for hot bolt forging dies. This steel cannot be cut or punched cold but can be shaped and ground on abrasive wheels of various kinds. It should be heated slowly and evenly for forging and kept as evenly heated at a bright red as possible. It should not be forged after it cools to a dark red. After the tool is made, heat it again to a bright red and lay it down to cool in a dry place or it can be cooled in a cold, dry air blast. Water must be kept away from it while it is hot. Next: Typical Oil-fired Furnaces Previous: Hardening High-speed Steel
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