SMAW ve GTAW Metotları ile Kaynaklanmış Yüksek Sıcaklık ve Basınç Dirençli Nükleer Enerji Santrali Çeliğinin Mekanik Özelliklerine Kaynak Sonrası Isıl İşleminin Etkisi.

Abstract

 Bu çalışma, GTAW (gaz tungsten ark kaynağı) ve SMAW (elektrik ark kaynağı) ile kaynaklanmış 2.25Cr1Mo (P22) yüksek sıcaklık ve basınca dayanıklı nükleer santral çeliğinin mekanik özellikleri üzerine Kaynak Sonrası Isıl İşleminin (PWHT) etkisini araştırmayı amaçlamaktadır. Kaynak işlemlerinden önce kaynak yapılacak malzemelere 200 °C' de ön ısıtma uygulanmıştır. Malzemelerin kaynak işlemleri oda sıcaklığında gerçekleştirilmiştir. Kaynak işlemlerinden sonra kaynak sonrası ısıl işlem (PWHT) 2 saat süreyle 750 °C' de uygulanmıştır. PWHT'den önce ve sonra, EN standartlarına göre hazırlanan kaynaklı malzemelerin, mekanik özelliklerin incelenmesi için, çekme, eğme, darbe, sertlik testleri ve makro yapı testleri uygulanmıştır.

Keywords

• PWHT,Ön Isıtma,2.25Cr1Mo Çeliği,GTAW,SMAW

Effect of PWHT on Mechanical Properties of High Temperature and Pressure Resistant Nuclear Power Plant Steel Welded with SMAW and GTAW Methods.

Abstract

This research aims at effect of Post Welding Heat Treatment (PWHT) on mechanical properties of 2.25Cr1Mo (P22) high temperature and pressure resistant nuclear power plant steel welded with GTAW (gas tungsten arc welding) and SMAW (shielded metal arc welding). Pre-heating was applied to the materials to be welded at 200°C before welding processes. Welding processes of materials were performed at room temperature. After welding processes, post weld heat treatment (PWHT) was applied at 750⁰C for 2 hours. Before and after the PWHT, welded materials were prepared in accordance with EN standards for tensile, bending, impact, hardness tests and macrostructure examinations for the investigation of mechanical properties.

Keywords

• PWHT,Preheating,2.25Cr1Mo Steel,GTAW,SMAW

References

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