Investigation in to machinability of tool steels as conventional and modern modes

Thesis Type: Postgraduate

Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2012




Machinability characteristics of tool steel the materials investigated in this study. Frequently used in the manufacturing industry Dievar hot work tool steel and Sleipner cold work tool steel materials machined with the most widely used in manufacturing operations by hole drilling operation. With traditional methods, innovative and classic drills, with modern methods, with the wire EDM machinability investigated. Experimental results obtained by classical and modern processing methods and other methods are compared among themselves. By conventional methods to the study at different cutting speeds, torque measurements of forces Kistler model 9257 B dynamometer were made. Operations of forming the hole with wire erosion, using different parameters experiments have been completed. The obtained results showed that the conventional methods, with the reamed solid carbide drills and uncoated solid carbide obtained from surfaces in general, at low speeds, high surface quality and accuracy of the hole is provided. But self-reamed solid carbide drill was observed found more successful on the surface quality and precision than the normal carbide drill. Experiments with T2000 insert have been achived to cut on both degree specimens and only performed low resistance against other drill bits. But other inserts for udrill on Dievar degree steel, HSS drills have been failed both in degree. Modern processing methods with the the wire cut surface quality and accuracy of thedifferent parameters of unloading does not constitute great and a distinct difference,just alters the processing time. On sensitivity Both systems when compared the surface sensitivity of self-reamed solid carbide drill with the wire erosion the resulting surface is relatively better, but sensitivityvalues were obtained very close to each other. However, it is observed, a shorter time finishing process is more economical for self-reamed drill with evaluation made taking into consideration the processing time. Evaluation of performance and price as the uncoated solid carbide drill bit has been found that relatively more successful than others.