Yazar "Kantay, Ramazan" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim
    Öğe
    Effect of surface roughness on drying speed of drying lamellas in veneer roller dryer
    (Academic Journals, 2010) Güngör, Nur Müge; Kantay, Ramazan; Korkut, Süleyman
    Lamellas, which are defined as top layers of multilayer parquet and favourable to wood veneer can be dried in jet ventilated automatic veneer roller dryer due to short drying period. The objective of this study is to determine the effect of surface roughness on the drying speed of the veneer roller dryer. Quercus spp., frequently used tree specie in Turkish solid wood and multilayer parquet industries was chosen as material in this study. Pre-dried lamella blocks were cut into 4 different machines. As a result, 4 test groups of lamellas displaying different surface roughness values were obtained. Lamellas which belong to each of these 4 test groups were also divided into 2 sub-groups and dried at 90 and 130 degrees C drying temperatures. Drying was evaluated in relation to drying speed. Mitutoyo SJ 301 profilmeter was used for determining surface roughness values. Drying speed of lamellas was expressed as: dividing difference of initial moisture content and final moisture content values to drying time value. The result of variance analyses showed differences between groups as surface roughness values. There was no difference between groups as drying speed were determined at 90 and 130 degrees C temperatures. Furthermore, the relation between surface roughness values and drying speed was searched using correlation analysis and no significant relationship was found. Finally, it was determined that there was no effect of surface roughness on drying speed in radial cut, pre-dried lamellas, which have surface roughness values between 10.464 and 15.064 mu m, drying in jet ventilated roller dryer, at 90 and 130 degrees C temperatures.
  • Küçük Resim
    Öğe
    Effects of drying methods of lamellas used in multilayer parquet manufacturing on surface roughness and bonding strength
    (Academic Journals, 2010) Güngör, Nur Müge; Korkut, Süleyman; Kantay, Ramazan
    The objective of this study is to determine surface roughness and bonding (tensile shear) strength of lamellas (top layer of multilayer parquet) which were cut away from green lumber and dried by different types of drying methods. Also, finding out the most convenient manufacturing method as surface roughness, bonding strength properties was aimed by comparing results with surface roughness and bonding strength of lamellas, which were cut away from dry lumber as seen in practice. Flat sawn green lamellas with 5 and 2 mm thicknesses, which were cut away from Iroko lumber by means of thin cutting frame saw, were dried with 3 different drying methods such as drying in lumber drying kiln, jet ventilated automatic veneer roller dryer and veneer press dryer. Effect of drying temperature on surface roughness and bonding strength was also determined by applying 3 different drying temperatures as 60, 100 and 140 degrees C in jet ventilated automatic veneer roller dryer. In addition, lamellas with the same thicknesses were manufactured from dry lumber by means of the same thin cutting frame saw mentioned above. As the result of analysis of variance showed, differences between test groups were determined as surface roughness. Consequently, effect of drying method on surface roughness was found. Also, surface roughness values were determined to be increasing as drying temperature increases when drying in veneer roller dryer. Surface roughness values of lamellas dried in lumber drying kiln were found to be higher than those cut away from the dry lumber as expected. Differences exist between test groups as bonding strength was determined by means of analysis of variance. The biggest bonding strength was found in lamella group which were cut away from dry lumber and mentioned as comparison group. It was found that no relation existed between bonding strength and temperature increase drying in veneer roller dryer. Also, it was determined that no significant relation was found between surface roughness and bonding strength as the result of correlation analysis. Conclusively, it was found that lamella manufacturing method, cutting away from dry lumber, was the most convenient method for obtaining the best bonding strength in multilayer parquet production.
  • Küçük Resim Yok
    Öğe
    Sarıçam’da Koniklik ve Eğriliğin Randıman Üzerine Etkisi
    (Düzce Üniversitesi, 2008) Kantay, Ramazan; Ünsal, Öner; Müge Güngör, Nur; Çelik, Murat
    In this study; it is determined that quantitative yield have obtained with sawing of54 mm thickness lumbers live saw method of logs obtained from Scots pine (Pinussylvestris L.) that is commonly worked up and used a tree species in the lumberindustry in Turkey. The logs used in the experiments were harvested from BelgradForest. Acording to the results, while log conicness and crookedness increases,quantitative yield decreases in all diameter classes.
  • Küçük Resim Yok
    Öğe
    Yield Change Based on the Diameter and Length in Beech (Fagus orientalis Lipsky)
    (Düzce Üniversitesi, 2008) Korkut, Süleyman; Kantay, Ramazan; Ünsal, Öner
    In this study; it is determined that quantitative yield have obtained with sawingof 60-80 mm thickness unedged lumbers and 22-30 mm thickness slab boards with livesaw method of 3rd quality class logs obtained from Beech (Fagus orientalis Lipsky)that is commonly worked up and used a tree species in the lumber industry in Turkey.The logs used in the experiments have chosen among the logs-length 2m, 4m and 6m,midle-diameter 20 cm, 40 cm, 60 cm and 80 cm, taper %3- available in the log yards ofthe ORUS Duzce Lumber Factory.As a result, the mean lumber quantitative yield in 20cm, 40cm, 60cm and 80cmdiameter classes, 2m length logs are %66.93, %78.93, %80.1 and %79.77; in 4m lengthlogs are %61.1, %71.73, %75.77 and %75.93; in 6m length logs are %61.7, %75.17,%79.7 and %79.53 respectively.Acording to the results, while log length increases, quantitative yield decreasesin all diameter classes. Yield values increase depend on the increase of log diameter in20 cm, 40 cm and 60 cm diameter class. However, it is undertood that the increasingdoesn’t continue in 80 cm diameter class.