Rules of Management, With Practical Instructions On Machine Building
Rules of Management, With Practical Instructions On Machine Building
Hodge, William, 1804-1887
The book Rules of Management, With Practical Instructions On Machine Building was written by author Hodge, William, 1804-1887 Here you can read free online of Rules of Management, With Practical Instructions On Machine Building book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Rules of Management, With Practical Instructions On Machine Building a good or bad book?
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Lists should be kept by the auxiliaries, of micrometers and other expen- sive tools that might be and sometimes are, carried off, and a report made to the assistant manager when any are missing. Digitized by Google XVII Fokge Department Instructions on Heat Treatment "DACK in case hardening compound or bone A dust. For surface case hardening in small boxes, heat to 1650°. Keep at this heat 4 hours and plunge in water. For heavy articles con- tinue the 1660° of heat 8 to 12 hours, accord- ing to... weight. When case hardening is needed to penetrate deeper, do not cool in water but in the air while in the box. Then re-heat to 1425° (without 1 case hardening compound or bone dust) and plunge in water. This second treatment should j give a depth of about 1/32. For the treatment of higher grade steel, proceed as described above, making sure that about 1 in. of bone dust is packed all around each piece, and after re-heating and plunging in water, heat in crude oil up to 450° to draw to the proper degree of thickness and temper.
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