Transactions - Manchester Association of EngineersIncludes its Annual report. |
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Page 223 - REPORT ON EXPERIMENTS WITH RAPID CUTTING STEEL TOOLS, made at the Manchester Municipal School of Technology, under the auspices of a Joint Committee of Members of the Manchester Association of Engineers and of Members of the School of Technology Sub-Committee together with Dr.
Page 404 - SCHONHEYDEB, in reply, thanked- the members for the very kind way in which they had received...
Page 245 - V = ~ for soft steel (fluid-pressed; . (2) where V = cutting speed in feet per minute, and a = area of cut in square inches = cut x traverse. The duration of run in these trials was 30 and 20 minutes for cast-iron and steel respectively, and the constant required to be altered for other lengths of run. Mr. FW Taylor | found that the speeds varied inversely as the eighth root of the duration of the run.
Page 248 - ... hour were therefore : 1 1.35 Ibs. at the light cut, and 26.5 Ibs. at the heavy cut. " These results are of general application, and show that not merely can more material be removed in a given time with a heavy cut at its proper speed than with a light cut at the highest speed which the new steels can take, but that this can be done at a smaller expenditure of gross power per ton of shavings removed.
Page 461 - He had very great pleasure in asking the members to accord a very hearty vote of thanks to Mr.
Page 261 - OSRORN & CO., Sheffield. Instructions for Working. Mushet High-Speed Steel. When forged, the cutting end of the tool should be reheated to a White heat, and then immediately blown COld. Whilst hot this steel must be kept from water. SEEROHM & DIECKSTAHL Limited, Dannemora Steel Works, Sheffield. Instructions for Treatment of both Qualities of Tools for the Tool Steel Tests. "New Capital
Page 182 - ... the site of the waterfall impounded. On the other hand, the sum of £4. per annum will amply cover the cost of one horse power obtained from the burning of coal by a large steam engine. The difference between these figures, varying between £2 10s.
Page 263 - With this combination a long series of trials was carried out in the Niles Works. The object of the trials was to determine, keeping in view the durability or life of the tools :— (1) What maximum surface could be machined in unit of time with a given cut of T^in , the traverse and speed being left open.
Page 404 - CRKWDSON said he had pleasure in proposing a hearty vote of thanks to Mr.
Page 248 - Manchester experiments conducted in 1903 on rapid-cutting tool steels showed that for steel the cutting force is simply proportional to the area of cut, and that this force has the following approximate values : — For soft steel (fluid compressed) . . . 115 tons per sq. in.