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Steel MakingFlange Shields For FurnacesSuch portable flame shields as the one illustrated in Fig. 1... Forging High-speed Steel Heat very slowly and carefully to from 1,800 to 2,000 deg.F.... Annealing To Relieve Internal Stresses Work quenched from a high temperature and not afterward tempe... Classifications Of Steel Among makers and sellers, carbon tool-steels are classed by g... Impact Tests Impact tests are of considerable importance as an indication ... Machineability Reheating for machine ability was done at 100 deg. less than ... The Care Of Carburizing Compounds Of all the opportunities for practicing economy in the heat-t... Annealing There is no mystery or secret about the proper annealing of d... Carburizing By Gas The process of carburizing by gas, briefly mentioned on page ... Plant For Forging Rifle Barrels The forging of rifle barrels in large quantities and heat-tre... High-chromium Or Rust-proof Steel High-chromium, or what is called stainless steel containing f... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Placing Of Pyrometers When installing a pyrometer, care should be taken that it re... Hardening Operation Hardening a gear is accomplished as follows: The gear is tak... Composition And Properties Of Steel It is a remarkable fact that one can look through a dozen tex... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Properties Of Steel Steels are known by certain tests. Early tests were more or l... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Affinity Of Nickel Steel For Carbon The carbon- and nickel-steel gears are carburized separately... |
Impact TestsCategory: COMPOSITION AND PROPERTIES OF STEEL Impact tests are of considerable importance as an indication of how a metal will perform under shock. Some engineers think that the tensile test, which is one made under slow loading, should therefore be supplemented by another showing what will happen if the load is applied almost instantaneously. This test, however, has not been standardized, and depends to a considerable extent upon the type of machine, but more especially the size of the specimen and the way it is nicked. The machine is generally a swinging heavy pendulum. It falls a certain height, strikes the sample at the lowest point, and swings on past. The difference between the downward and upward swing is a measure of the energy it took to break the test piece. Next: Fatigue Tests Previous: Tensile Properties
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