Hayriye ERTEK EMRE, Ramazan KAÇAR, Akın BOZKURT, Batuhan BOZKURT

Nokta Direnç Kaynak Elektrotlarına TiC-Co Kaplamanın Etkisi

Nokta direnç kaynak yöntemi otomotiv endüstrisinde yaygın olarak kullanılmaktadır. Diğer kaynak yöntemlerine göre oldukça hızlı, ekonomik, güvenilir bir yöntemdir. Kaynak işlemi sırasında elektrotların iş parçalarına temas eden yüzeyinde lokal olarak yüksek sıcaklıklara çıkılmaktadır ve kaynak çevrimi boyunca da elektrotlar iş parçalarına belli bir basınç uygularlar. Basınç ve sıcaklık elektrot yüzeyinde deformasyon oluşturur. Nokta direnç kaynağında kullanılan Cu-Cr-Zr elektrotların ömürlerini uzatmak için kaplama işlemi uygulanmaktadır. Bu çalışmada, elektrotların uç yüzeylerine TiC-Co malzeme elektrospark yöntemiyle farklı kaplama parametrelerinde kaplanmış, böylece kaplamanın DP600 çelik saç çifti birleştirmesi özelliklerine etkisi araştırılmıştır.

Effect of TiC-Co Coating on the Resistance Spot Welding Electrodes

Resistance spot welding method is widely used in the automotive industry. It is a fast, economical and reliable method as compared to other welding methods. During the welding process, locally high temperatures are exited at the surface of the electrodes that contact to the work piece, and the electrodes apply a certain pressure to the workpieces during the welding cycle. Pressure and temperature create deformation at the electrode surface. Coating is applied to extend the lifetime of the Cu-Cr-Zr electrodes which were used in the resistance spot welding. In this study, the TiC-Co material was coated on the end surfaces of the electrodes by electrospark method in different coating parameters, so the effect of the coating on DP600 steel sheet joining properties was investigated.

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