| The face is flushed, the breath has the odor of liquor, the pulse is full and bounding with deep respiration. Reason, memory, judgment and will are first stimulated and then blunted. The drinker's peculiarities are exaggerated, the person becoming ... Read more of ALCOHOLISM. Acute Symptoms at Home Medicine.ca |  Informational.caPrivacy |
Steel MakingSuggestions For Handling High-speed SteelsThe following suggestions for handling high-speed steels are ... High-carbon Machinery Steel The carbon content of this steel is above 30 points and is ha... The Thermo-couple With the application of the thermo-couple, the measurement of... Heat Treatment Of Lathe Planer And Similar Tools FIRE.--For these tools a good fire is one made of hard foundr... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Tensile Properties Strength of a metal is usually expressed in the number of pou... Uses Of The Various Tempers Of Carbon Tool Steel DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres... Heat Treatment Of Punches And Dies Shears Taps Etc HEATING.--The degree to which tools of the above classes shou... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Pyrometry And Pyrometers A knowledge of the fundamental principles of pyrometry, or th... S A E Heat Treatments The Society of Automotive Engineers have adopted certain heat... Heat Treatment Of Gear Blanks This section is based on a paper read before the American Gea... Annealing Alloy Steel The term alloy steel, from the steel maker's point of view, r... Liberty Motor Connecting Rods The requirements for materials for the Liberty motor connecti... Silicon Silicon prevents, to a large extent, defects such as gas bubb... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Correction For Cold-junction Errors The voltage generated by a thermo-couple of an electric pyrom... The Care Of Carburizing Compounds Of all the opportunities for practicing economy in the heat-t... Mushet And Bessemer That Mushet was "used" by Ebbw Vale against Bessemer is, perh... Hardening High-speed Steel In forging use coke for fuel in the forge. Heat steel slowly ... |
Annealing Alloy SteelCategory: ANNEALING The term alloy steel, from the steel maker's point of view, refers largely to nickel and chromium steel or a combination of both. These steels are manufactured very largely by the open-hearth process, although chromium steels are also a crucible product. It is next to impossible to give proper directions for the proper annealing of alloy steel unless the composition is known to the operator. Nickel steels may be annealed at lower temperatures than carbon steels, depending upon their alloy content. For instance, if a pearlitic carbon steel may be annealed at 1,450 deg.C., the same analysis containing 2-1/2 per cent nickel may be annealed at 1,360 deg.C. and a 5 per cent nickel steel at 1,270 deg.. In order that high chromium steels may be readily machined, they must be heated at or slightly above the critical for a very long time, and cooled through the critical at an extremely slow rate. For a steel containing 0.9 to 1.1 per cent carbon, under 0.50 per cent manganese, and about 1.0 per cent chromium, Bullens recommends the following anneal: 1. Heat to 1,700 or 1,750 deg.F. 2. Air cool to about 800 deg.F. 3. Soak at 1,425 to 1,450 deg.F. 4. Cool slowly in furnace. Next: High-carbon Machinery Steel Previous: Tool Or Crucible Steel
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