Metallurgy; a Condensed Treatise for the Use of College Students And Any Desiring a General Knowledge of the Subject
Metallurgy; a Condensed Treatise for the Use of College Students And Any Desiring a General Knowledge of the Subject
Wysor, Henry, 1880-
The book Metallurgy; a Condensed Treatise for the Use of College Students And Any Desiring a General Knowledge of the Subject was written by author Wysor, Henry, 1880- Here you can read free online of Metallurgy; a Condensed Treatise for the Use of College Students And Any Desiring a General Knowledge of the Subject book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Metallurgy; a Condensed Treatise for the Use of College Students And Any Desiring a General Knowledge of the Subject a good or bad book?
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A little oxide of manganese is usually added, and sometimes a "physic" such as salt, potassium cyanide, etc., is used. The crucible is covered and placed in the melting hole of the furnace. Some time after the charge has fused the melter takes off the crucible lid and examines the contents with the aid of a rod. From the appearance of the slag and certain other indications he determines when the crucible should be with- drawn from the furnace. The crucible is lifted out by means of tongs, which... are made to encircle it a few inches below its largest diameter, giving support to its sides. The steel I is usually allowed to stand for a few minutes before I pouring. This is termed "killing," as it serves to quiet 136 METALI.URGY the metal.^ The steel is then slowly poured into the ingot molds, and the crucible is thrown aside for inspection. A crucible lasts for from four to six heats. The molds, just referred to, are com- monly about 30 inches long and three inches square inside. They are made in two pieces, the joint running lengthwise, and held together with rings and keys.
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