| The haunted room forms part of the old house, with windows looking into the court. It adjoins a tower built for defence, for Corby was, properly, more a border tower than a castle of any consideration. There is a winding staircase in this ... Read more of The Radiant Boy Of Corby Castle at Scary Stories.ca |  Informational.caPrivacy |
Steel MakingHeat-treating Equipment And Methods For Mass ProductionThe heat-treating department of the Brown-Lipe-Chapin Company... Pyrometers For Molten Metal Pyrometers for molten metal are connected to portable thermoc... Hardening Steel is hardened by quenching from above the upper critical.... Detrimental Elements Sulphur and phosphorus are two elements known to be detrimen... Chrome-nickel Steel Forging heat of chrome-nickel steel depends very largely on ... Hints For Tool Steel Users Do not hesitate to ask for information from the maker as to t... Annealing ANNEALING can be done by heating to temperatures ranging from... Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer For extremely high temperature, the optical pyrometer is lar... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Alloying Elements Commercial steels of even the simplest types are therefore p... The Quenching Tank The quenching tank is an important feature of apparatus in c... Effects Of Proper Annealing Proper annealing of low-carbon steels causes a complete solu... Separating The Work From The Compound During the pulling of the heat, the pots are dumped upon a ca... Properties Of Steel Steels are known by certain tests. Early tests were more or l... The Packing Department In Fig. 56 is shown the packing pots where the work is packe... Critical Points One of the most important means of investigating the properti... The Effect Of Tempering On Water-quenched Gages The following information has been supplied by Automatic and ... Lathe And Planer Tools FORGING.--Gently warm the steel to remove any chill, is parti... Quenching The Work In some operations case-hardened work is quenched from the bo... Annealing In Bone Steel and cast iron may both be annealed in granulated bone. ... |
Properties Of SteelCategory: COMPOSITION AND PROPERTIES OF STEEL Steels are known by certain tests. Early tests were more or less crude, and depended upon the ability of the workman to judge the grain exhibited by a freshly broken piece of steel. The cold-bend test was also very useful--a small bar was bent flat upon itself, and the stretched fibers examined for any sign of break. Harder stiff steels were supported at the ends and the amount of central load they would support before fracture, or the amount of permanent set they would acquire at a given load noted. Files were also used to test the hardness of very hard steel. These tests are still used to a considerable extent, especially in works where the progress of an operation can be kept under close watch in this way, the product being periodically examined by more precise methods. The chief furnace-man, or melter, in a steel plant, judges the course of the refining process by casting small test ingots from time to time, breaking them and examining the fracture. Cutlery manufacturers use the bend test to judge the temper of blades. File testing of case-hardened parts is very common. However there is need of standardized methods which depend less upon the individual skill of the operator, and which will yield results comparable to others made by different men at different places and on different steels. Hence has grown up the art of testing materials. Next: Tensile Properties Previous: Alloying Elements
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