Properties analysis of the spray nozzles in drying plant
Küçük Resim Yok
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Scibulcom Ltd.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The process of evaporating liquid inside a material is called drying. In the technical sense, drying is a process in which humidity is released from the material by external intervention using various methods. In cacao drying experiments, cacao was pushed into the spray nozzles under high pressure of 180-200 bars. The heat of the cacao reached 60°C when it passed through the spray nozzles. However, the main purpose of this study is to examine the tribological properties of spray nozzles in cacao drying plant. Spray nozzles were made by using four different types of tool steels, which are 1.2379 cold work tool steel, 1.2550 hot work tool steel, 1.3343 high speed tool steel and 1.4140 correctional steel. Spray nozzles were processed according to the technical dimensions, were polished, and were brought to the desired hardness by thermal processes. Hardness of tool steels was measured in this way they were used in cacao spraying plant, and microstructure and surface roughness of specimens were examined. However, wear tests were performed for tribological characterisation under dry sliding condition without lubrication. Life-spans of the spray nozzles were determined after the experiment structures of tool steels were analysed. It was found that hardness level directly affected the coefficient of wear for the steels. Then, the tempering effect of the steels shows lower performance probably due to lower carbon and hardness levels.
Açıklama
Anahtar Kelimeler
Cacao Drying; Spray Nozzle; Tool Steels; Tribology; Wear
Kaynak
Journal of the Balkan Tribological Association
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
21
Sayı
3
