STUDY OF ABRASIVE WEAR PROPERTİES OF 1.6523 (AISI 8620), 1.2379 (AISI D2) AND TOOLOX 33 STEELS

Abstract

Friction and wear between parts of a mechanical system, resulting from relative motion, cause energy loss. Wear is an irreversible loss of material. In this study, the abrasive wear properties of 1.6523 (AISI 8620), 1.2379 (AISI D2), and Toolox 33 steels, commonly used in general machine manufacturing, were investigated using an Abrasive Wear Testing Machine (AATC). Unlike traditional pin-disk testing machines, the samples move on a disc, making contact with a new surface on the abrasive surface. Abrasives with a grit size of 120 were used. A load of 50 N, a speed of 5 mm/s, and a sliding distance of 500 m were selected for the tests. At the start of the test, all three steel types exhibited similar friction coefficients. However, in terms of average friction coefficient and wear losses, the samples behaved as follows, from smallest to largest: 1.6523 (AISI 8620), 1.2379 (AISI D2), and Toolox 33. On the other hand, based on the K wear coefficients, Toolox 33 steel was found to be in the middle range. The experimental study, conducted under dry conditions, aimed to assist in the selection of these materials for industrial applications by measuring the coefficient of friction, mass loss, wear amount, and surface roughness.

Keywords

• Wear
• Abrasive wear
• Friction
• 1.6523(AISI 8620)
• 1.2379 (AISI D2)
• Toolox 33

Thanks

MDK Makina Dizayn Kalıp San. ve Tic. A.Ş. is gratefully acknowledged for its support in the manufacturing of the test device and for providing the necessary infrastructure and working environment for conducting the experimental studies.

1.6523 (AISI 8620), 1.2379 (AISI D2) VE TOOLOX 33 ÇELİKLERİN ABRASİF AŞINMA ÖZELLİKLERİNİN İNCELENMESİ

Abstract

Mekanik bir sistemi oluşturan parçalar arasındaki bağıl hareket sonucunda parçalarda sürtünme ve aşınmalar enerji kaybına sebep olmaktadır. Aşınma, geri kazanılamayan bir madde kaybıdır. Bu çalışmada, genel makine imalatında yaygın kullanılan 1.6523 (AISI 8620), 1.2379 (AISI D2) ve Toolox 33 çeliklerin abrasif aşınma özellikleri Abrasif Aşınma Test Cihazı (AATC) kullanılarak incelenmiştir. Test cihazı geleneksel Pim-Disk cihazından farklı olarak test numunesi disk üzerinde hareket ederek aşındırıcı yüzeyinde yeni yüzeyle temas sağlanmıştır. Aşındırıcı olarak 120 grit tane boyutuna sahip zımparalar kullanılmıştır. Testlerde 50 N yük, 5 mm/s hız ve 500 m kayma mesafesi seçilmiştir. Test başlangıcında her üç çelik türü de birbirine yakın sürtünme katsayıları sergilemiştir. Bununla birlikte, ortalama sürtünme katsayısı ve aşınma kayıpları açısından numuneler küçükten büyüğe sırasıyla 1.6523 (AISI 8620), 1.2379 (AISI D2) ve Toolox 33 şeklinde davranış göstermektedir. Öte yandan, K aşınma katsayıları baz alındığında Toolox 33 çeliğinin orta değerde konumlandığı tespit edilmiştir. Kuru şartlarda gerçekleştirilen deneysel çalışmada, sürtünme katsayısı, kütle kaybı ile aşınma miktarı, yüzey pürüzlükleri ölçümünden yola çıkarak söz konusu malzemelerin seçiminde endüstri uygulamalarında yardımcı olmak amaçlanmıştır.

Keywords

• Aşınma
• Abrasif aşınma
• Sürtünme
• 1.6523(AISI 8620)
• 1.2379 (AISI D2)
• Toolox 33

Thanks

Bu çalışmada kullanılan deney cihazının imalatına sağladığı destek ile deneylerin gerçekleştirilmesi için gerekli altyapı ve çalışma ortamını sağlayan MDK Makina Dizayn Kalıp San. ve Tic. A.Ş.'ye teşekkür ederiz.

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