Kalıp malzemesine uygulanan ısıl işlem ve yüzey kaplamalarının sac şekillendirmeye etkileri

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Thesis Type: Postgraduate

Institution Of The Thesis: Kocaeli University, Fen Bilimleri Enstitüsü, Makina Mühendisliği Bölümü, Turkey

Approval Date: 2022

Thesis Language: Turkish

Student: RABİA EDİS

Supervisor: Tamer Sınmazçelik

Open Archive Collection: AVESIS Open Access Collection

Abstract:

Since sheet metal forming processes are suitable for mass production conditions and high numbers of products can be produced with precise tolerance, they are used in many areas from automotive to aerospace industry. These processes can be listed as cutting, bending, deep drawing, stretch forming and hydroforming. The sheet metal forming process is based on the forming of the sheet metal part with a tool. During this process, friction forces occur between the tool and the sheet metal part as a result of the forming forces. Production performance and product quality are greatly affected as a result of wear on the tool surfaces after a certain period of time in high production quantities as a result of relative movements and contact. Especially when looking at the deep drawing process, it is inevitable that the wear will occur after a certain period of time due to the high forming forces in the dies. In order to increase the quality of the process by increasing the performance of the tools and to prevent wear, the choice of tool material, each operation on the tool (surface treatment, heat treatment, surface hardening, coating) is of great importance. Within the scope of this thesis, it is aimed to examine the effects of the parameters affecting the deep drawing process, which is one of the sheet metal forming processes, and the effects of the processes made on the deep drawing dies on the performance. Coatings that greatly affect the mechanical and surface properties of the tools are discussed. After heat treatment and surface treatments were applied to 1.2379 cold work tool steel, various coatings were applied on the sample and its wear and friction performances were evaluated. The evaluated coatings were then applied to deep drawing tools and examined experimentally and numerically.