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Steel MakingTempering Round DiesA number of circular dies of carbon tool steel for use in too... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Restoring Overheated Steel The effect of heat treatment on overheated steel is shown gra... The Influence Of Size The size of the piece influences the physical properties obta... Annealing Method Forgings which are too hard to machine are put in pots with ... Phosphorus Phosphorus is one of the impurities in steel, and it has been... Correction By Zero Adjustment Many pyrometers are supplied with a zero adjuster, by means ... Cutting-off Steel From Bar To cut a piece from an annealed bar, cut off with a hack saw,... The Forging Of Steel So much depends upon the forging of steel that this operation... Surface Carburizing Carburizing, commonly called case-hardening, is the art of pr... Pyrometers Armor plate makers sometimes use the copper ball or Siemens' ... Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer For extremely high temperature, the optical pyrometer is lar... Steel Before The 1850's In spite of a rapid increase in the use of machines and the ... Refining The Grain This is remedied by reheating the piece to a temperature slig... Chromium Chromium when alloyed with steel, has the characteristic func... Blending The Compound Essentially, this consists of the sturdy, power-driven separa... Composition Of Transmission-gear Steel If the nickel content of this steel is eliminated, and the pe... Hardening Steel is hardened by quenching from above the upper critical.... Mushet And Bessemer That Mushet was "used" by Ebbw Vale against Bessemer is, perh... Protective Screens For Furnaces Workmen needlessly exposed to the flames, heat and glare from... |
Instructions For Working High-speed SteelCategory: HIGH-SPEED STEEL Owing to the wide variations in the composition of high-speed steels by various makers, it is always advisable to follow the directions of each when using his brand of steel. In the absence of specific directions the following general suggestions from several makers will be found helpful. The Ludlum Steel Company recommend the following: CUTTING-OFF.--To cut a piece from an annealed bar, cut off with a hack saw, milling cutter or circular saw. Cut clear through the bar; do not nick or break. To cut a piece from an unannealed bar, cut right off with an abrasive saw; do not nick or break. If of large cross-section, cut off hot with a chisel by first slowly and uniformly heating the bar, at the point to be cut, to a good lemon heat, 1,800 deg.-1,850 deg.F. and cut right off while hot; do not nick or break. Allow the tool length and bar to cool before reheating for forging. Next: Lathe And Planer Tools Previous: For Milling Cutters And Formed Tools
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