The Encyclopedia of Founding And Dictionary of Foundry Terms Used in the Practice of Moulding ..
The book The Encyclopedia of Founding And Dictionary of Foundry Terms Used in the Practice of Moulding .. was written by author Bolland, Simpson. [from Old Catalog] Here you can read free online of The Encyclopedia of Founding And Dictionary of Foundry Terms Used in the Practice of Moulding .. book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Encyclopedia of Founding And Dictionary of Foundry Terms Used in the Practice of Moulding .. a good or bad book?
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Shear-steel. — Shear-steel of commerce is classified as double and single shear steel. Owing to the imperfec- tions of blister-steel, it is not suitable for the manufacture of cutting instrument, as shears, knives, etc., until it has undergone the processes of cutting, piling, reheating, and welding together again under the hammer or by rolling. The resultant bar is shem'-steel; this, when cut up or doubled upon itself, reheated, and again hammered or rolled, is douUe-sliear steel. See Blister-...steel. Slieatliing-metal is a metal or alloy which, when rolled into sheets, is employed for covering the bottoms of wooden ships to protect them from worms, etc. Muntz's Sheet Iron. 383 Sheet Lead. metal for this purpose is copper GO, zinc 40; but he states that any proportions between the extremes of copper 50, zinc 50, and copper 63, zinc 37, will roll and work at a red heat ; but copper 60, zinc 40 is always to be preferred. The cast ingots of this alloy are heated to about 200° and rolled into sheets, the same heat serving for work- ing this alloy into other shapes, as bolts, etc.
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