The book American Foundry Practice was written by author West, Thomas Dyson, 1851-1915. [from Old Catalog] Here you can read free online of American Foundry Practice book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is American Foundry Practice a good or bad book?
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6. Hard ramming closes up the porosity of the sand, but the vent wire opens it. 7. Too much water used in mixing sand creates too much steam when the mould is poured. 8. Steam accumulating under liquid iron, will raise and blow it up. 9. When iron bubbles or boils in a mould, it will make a scabbed or bad casting. 10. Iron naturally seeks a soft bed. If poured on a hard bed it will bubble and fly. 11. The face of a mould should always be the softest. 12. Whenever hard ramming is required, it sh...ould be done on the outside portion of a mould. 13. A rammer should never be allowed to strike a pattern when ramming up a mould. 14. When ramming up the sides of a pattern, the pm should not go nearer than one inch to the face ; the butt should be kept one and a half inches from the face. 118 GREEN SAND MOULDING. 15. Too much depth of sand in a ramming will be apt to make swells upon the sides of a casting. 16. In ramming courses of sand, the rammer should be made to feel the under or last course rammed.
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