Marine Boiler Management and Construction: Being a Treatise on Boiler Troubles and Repairs, Corrosion, Fuels and Heat, on the Properties of Iron and Steel, on Boiler Mechanics, Workshop Practices and Boiler Design |
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Common terms and phrases
angle annealing bars beam bending boiler shell butt straps carbonic acid caulking centre circumferential coal cold Collapsed combustion chamber compression stress copper corrosion corrugated cracked curvature cylindrical D. K. Clark diameter Double Nuts draught drilled edges elastic limit elongation end plates engineers Enging experiments exposed factor of safety fibre fire fitted flame flange flat plates formula fuel furnace gases girder hammer increased iron plates joint lap joint length limit of elasticity load longitudinal machine material maximum measured metal mild steel nitrogen oxygen percentage phosphorus pitch pressure produced punched reduced rivet holes S₁ salt sample screwed stays seams sectional area shearing stress shell plates shown in fig side square inch Stay Ends stay tubes steam pipes strains Surveyor temperature tenacity tensile strength tension test piece tube plate valve velocity washers water-tube boilers weight welded
Popular passages
Page 380 - C = 100 when the plates are not exposed to the impact of heat or flame, and the stays are fitted with nuts and washers, the latter being at least three times the diameter of the stay and twothirds the thickness of the plates they cover.* C = 90 when the plates are not exposed to the impact of heat or flame.
Page 348 - In the furnaces referred to below, the formulae given are applicable if the steel used has a tensile strength of not less than 26 nor more than 30 tons per square inch. If the material of furnaces has a less tensile strength than 26 tons per square inch, then, for each ton per square inch which the minimum tensile strength falls below 26, the coefficient is to be correspondingly decreased by Jg part.
Page 375 - ... material with all the rivet holes drilled in place and all the seams fitted with double butt straps each of at least five-eighths the thickness of the plates they cover, and all the seams at least double riveted with rivets having an allowance of not more than 75 per cent.
Page 374 - Trade consider that boilers well constructed, well designed, and made of good material should have an advantage in the matter of working pressure over boilers inferior in any of the above respects, as unless this is done the superior boiler is placed at a disadvantage, and good workmanship and material will be discouraged.
Page 371 - For steel bars for combustion chamber stays the tensile breaking strength is to be between the limits of 2G and 30 tons per square inch, with an elongation of not less than 23 per cent, measured on the Standard test piece B.
Page 393 - ... should be submitted to the Board for consideration. In ascertaining the fire-grate area, the length of the grate should be measured from the inner edge of the dead plate to the front of the bridge, and the width from side to side of the furnace on the top of the bars at the middle of their length. In the case of vessels that have not...
Page 373 - The sectional area of the body of the forging (as forged) is not to exceed one-fifth of the sectional area of the original ingot, and no part of the forging (as forged) is to have more than two-thirds of the sectional area of the original ingot.
Page 379 - Width of combustion box in inches. P = Pitch of supporting bolts in inches. D = Distance between the girders from centre to centre in inches. L = Length of girder in feet. d = Depth of girder in inches. T = Thickness of girder in inches. C = 500 when the girder is fitted with one supporting bolt.