Oxy-acetylene Welding: A Comprehensive Treatise on the Practice of Welding Cast Iron, Malleable Iron, Steel, Copper, Brass, Bronze, and Aluminum by the Oxy-acetylene Methods, Together with Concise Information on the Equipment Required for Both Welding and Cutting by this Process

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Page 60 - The sum of any two sides of a triangle is always greater than the third side.
Page 181 - ... dimensions, because of the great radiating property of copper. Preheating is necessary when a large piece of copper is to be welded...
Page 175 - After being cooled, it can then be welded to an ordinary machine steel without burning; but it takes an experienced welder to make a good weld of this kind. Cast Iron to Steel To weld cast iron to steel, cast-iron rods must be used as the welding material. The steel must be heated to the melting point first, as cast iron melts at a lower temperature.
Page 182 - Adjust the flame with the single cone as for steel welding. Keep the point of the white flame slightly away from the weld, according to the thickness of the piece, so that the heat will not be sufficient to volatilize the zinc or tin which is in the brass.
Page 21 - ... flash back." An excessive discharge of sparks indicates that too much oxygen is being used and that the metal is being burned or oxidized, although, when welding thick metals, there will be a considerable volume of sparks, even though the flame is neutral. Size of Torch Tip. — The proper size of tip to use for welding depends upon the thickness of the work and the rate at which the heat is dissipated.
Page 162 - In welding steel, remember that the welding material should 'n'ever be added until the edges of the metal to be welded are fused, or molten, at the place where the weld is being made. The welding metal should be of special wire, and in no case should the flame be held on to the weld until a foam is produced, as such foam is an indication that the metal is being burned.
Page 103 - Materials the heating operation, the flame should be swung around in rather email circles and be advanced slowly to distribute the heat and prevent burning. The surface should be thoroughly fused before adding metal from the welding stick, and the latter should be held close to, or in contact with, the surface. The heat is then radiated from the welding rod to the work, whereas if the metal were allowed to drop through the flame, it might be burned to an injurious extent. When the weld is completed,...
Page 7 - best paints" on the market, some of which are good, and some of which will hardly last until the paint salesman can collect his bill. The best paints obtainable will last about six years, after which period a new painting is necessary for good maintenance. The claims of some manufacturers greatly exceed this period. The Bridge Department' of New York makes a practice...
Page 175 - The remedy is to play the flame in a radius of from \ to 1 inch around the refractory point until the surrounding metal is at a white heat, then apply the flame to the spot itself, and it will quickly unite with the other molten metal.
Page 2 - Welding, autogenous. The process of fusing and uniting metals by the application of intense heat, without compression or hammering. Steel, cast iron, copper, brass, bronze and aluminum can be united by autogenous welding. Welding, autogenous (fusion).

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