Thermoresistant alloys are also called superalloys, two examples are nickel (Inconel 718) and cobalt (Haynes 25). Regarding their machining, they are even worse than titanium, A very high cutting machine speed for these is 80 m/min. Therefore, their machining is performed on conventional machines, and is by no means a high speed process. The term conventional does not mean a low quality machine, but rather it does not have spindle over 6000 rpm nor does it work with feeds over 4 m/min.
The added value of components manufactured in these alloys is very high and the machines used usually have a very high precision, therefore high range machines and a lot of precision. If you will allow a simile, i.e. if one could choose between a high speed car of “I want and can’t have’ or a high-end German one, which would prefer ?. Machining of superalloys was the purpose of the study using hybrid machining techniques, as shown in Fig. and will be commented in the corresponding.
No comments:
Post a Comment