Principles of MetallurgyMacmillan & Company, 1895 - 388 Seiten |
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added alloy alumina aluminium amalgam amount antimony arsenic atomic bismuth blast furnace bottom brittle calcined carbonic oxide cast cast-iron cent chamber charcoal charge chemical chloride clay coal cobalt coke colour combination combustion compounds consists containing cooling copper crucible crystalline cupellation cwts cylinder decomposed dioxide dissolved elements employed feet ferrous flue flux fuel fused fusible gases gold grey hard hardening hearth high temperature hydrogen impurities inches increases lead lime liquid malleable manganese melting point mercury metal method molten nickel obtained ordinary oven oxide of iron oxidised oxygen passes phosphorus pig iron pipe plate platinum potassium precipitated produced puddling puddling furnace pyrites re-heating red heat reduced regulus removed reverberatory furnace roasted Siemens silicate silicon silver silver chloride slag small quantities smelting sodium solder solid solution specific gravity steel sulphate sulphide sulphuric acid surface termed tons twyers unite vessel weight zinc
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Seite 90 - British thermal unit is the amount of heat required to raise 1 Ib. of water 1° Fahr.
Seite 68 - No. 9 test, with the carbon very much reduced, this characteristic of hardness is intensified by the increase of nickel to 10 per cent. This quality of hardness obtains as the nickel is increased, until about 20 per cent is reached, when a change takes place, and successive additions of nickel tend to make the steel softer and more ductile, and even to neutralize the influence of carbon, as is shown in No.
Seite 97 - Cornu, and consists essentially of a telescope associated structurally with a standard of comparison oil-light lamp. The flame image of this lamp is projected upon a mirror, fixed at an angle of 45°, and placed internally across the junction of the tube-branch of the lamp with that for sighting the incandescent object to be tested. The intensity of the luminous beam, projected from the oillamp flame, and that issuing from the furnace, or other heated and incandescent object, whose temperature is...
Seite 11 - ELASTICITY of matter is that property in virtue of which a body requires force to change its bulk or shape, and requires a continued application of the force to maintain the change, and springs back when the force is removed, and, if left at rest without the force, does not remain at rest except in its previous bulk and shape.
Seite 68 - Riley states that the steels rich in nickel are practically non-corrodible, and that those poor in nickel are much better than other steels in this respect. The 1 per cent nickel-steel welds fairly well, but this property deteriorates with each addition of nickel.
Seite 180 - ... of the plate, to 1 per cent. at the surface, by a continuance of the treatment for a period of 120 hours after the furnace has been raised to the required temperature. The depth to which this increased degree of carburisation can be allowed to penetrate increases with the thickness of the plate. This penetration is dependent not only on the temperature of the furnace and on the length of time the plate is exposed to the cementation process, but it is also greatly facilitated by the continuous...
Seite 62 - Agiroide, etc., are simply German silver ; but in some cases a little cobalt is present as well as nickel, and some makers add a small quantity of iron or manganese. 1 to 3 per cent of lead is sometimes added for cast work. The properties which make German silver so valuable...
Seite 90 - In all fuel containing carbon, hydrogen, and oxygen, the proportion of hydrogen may be equal to, or greater, but never less than, that required to form water with the oxygen. It...
Seite 151 - ... a direct lift ; it is also difficult to keep the water boxes tight. It consists of two cages moving vertically between guides, and connected by a chain passing over a pulley. Below the floor of each cage is fixed a water-tight box provided with a discharge valve. When one cage is at the top, having discharged its load, water is caused to flow into its box until the weight is sufficient to pull up the other ca^e which is loaded.
Seite 50 - This law, as originally expressed, states that "the properties of the elements are a periodic function of their atomic weights.