High Speed Steel the Development Nature Treatment And Use of High Speed Stee
High Speed Steel the Development Nature Treatment And Use of High Speed Stee
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Drills for this purpose should have a very tough temper and smooth finish, and usually are better if twisted from rolled stock rather than milled from the round. Another cause for such breakage is the insecure holding of the several parts or plates when holes are being drilled through several members at the same setting.
Increasing Use of Flat Drills. In passing it may be of interest to mention that in many kinds of work flat drills are just as efficient as the twist variety in grey iron they a...re found frequently to be slightly more economical. In steel forgings the twist drills are con- siderably the more efficient, however, as may be seen from the accompanying figure (160). Straight-grooved drills made from round stock are also quite efficient, though not quite so cheap to manufacture as the flat style. Of course the efficient use of drills of these forms involves accurate and correct grinding, just as in the case of twist drills.
The Case of Rose Reamers. Multiple-lipped drills, rose reamers, and similar boring tools are in the same category with drills in respect to the economies to be effected and the manner of effecting them.
What to read after High Speed Steel the Development Nature Treatment And Use of High Speed Stee?
You can find similar books in the "Read Also" column, or choose other free books by Otto Matthew Becker to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Drills for this purpose should have a very tough temper and smooth finish, and usually are better if twisted from rolled stock rather than milled from the round. Another cause for such breakage is the insecure holding of the several parts or plates when holes are being drilled through several members at the same setting.
Increasing Use of Flat Drills. In passing it may be of interest to mention that in many kinds of work flat drills are just as efficient as the twist variety in grey iron they a...re found frequently to be slightly more economical. In steel forgings the twist drills are con- siderably the more efficient, however, as may be seen from the accompanying figure (160). Straight-grooved drills made from round stock are also quite efficient, though not quite so cheap to manufacture as the flat style. Of course the efficient use of drills of these forms involves accurate and correct grinding, just as in the case of twist drills.
The Case of Rose Reamers. Multiple-lipped drills, rose reamers, and similar boring tools are in the same category with drills in respect to the economies to be effected and the manner of effecting them.
What to read after High Speed Steel the Development Nature Treatment And Use of High Speed Stee?
You can find similar books in the "Read Also" column, or choose other free books by Otto Matthew Becker to read onlineMoreLess
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