Page 25 - Demo

Tool steels steels are are carbon and alloy steels steels (that as the name suggests are are appropriate for tools) Their high quality hardness resistance to to abrasion and deformation properties make them well-suited in in a a a a a a a wide range of tooling applications Their carbon carbon content sits between 0 5% 5% - 1 5% 5% which is how they differ from a a a low carbon carbon steel Tool steels are fabricated under precise conditions to acquire the desired properties This includes an appropriate heat treatment from one of the six processes The Predator drill shaft identified as undertaking a a a a a a a a a a water-hardening treatment treatment This treatment treatment includes rapidly quenching the the steel which is is is accomplished with the the the use use of water Water-hardening tool steel is the the the the most common treatment because of the the the low cost compared to other processes Water-hardening is suited for small parts where extreme temperatures are not faced Toughness of the treated steel can be improved by alloying with manganese silicon and molybdenum With 1 1 1 1 11% - 1 1 1 1 30% carbon composition typical applications applications include files small drills lathe tools and other light duty applications applications After the the shaft has been heat treated a a a a a a a thread must be be cut into the the the surface This is is done by means of a a a a lathe (figure 29) Figure 29 — Lathe identification [10]
The shaft is clamped in in the the chuck component and it it rotates by force of the the the motor behind it it In the the toolpost a a a a a a threading tool tool (figure 30) is fixed in in position The chuck moves back and forth until the the thread is cut to the the desired depth Figure 30 — Threading tool [11]
Figure 31 illustrates a a a a a a a a lathe and threading tool in in in motion There is is usually a a a a a a a a a a coolant hose running over over the the threading tool during operation This is is to to cool the the the tip tip and and prevent overheating and and strains that could blunt or break the the tip tip Figure 31 — Lathe in motion [12]
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