Study effect moisture content of grain and speed in some indicators technical to milling machines.

Abstract

Experiment was conducted to evaluate effect moisture content of grain and speed in some indicators technical to wheat cultivar, Ahwaz 1 in the labrotaries of the University of Tehran to2015. Research include using two types of machines ( Cylinder and Hammer), under three levels from moisture conten of grain (13-15% , 15- 17% and 17-19%),and three levels from speed (0.717 , 0.820 and 0.921 ) . The results indicated that the machine type Cylinder was significantly better on the machine type Hammer in all studies traits. As well as moisture grain 13-15% was superiorly significantly on two levels 15-17%,17-19% in all studied traits .While speed0.921 significant superiorly on two levels 0.717,0.820 in all studies traits except the percentage of breakage grain which gives result best with the speed level o.717 . The overlap between the machine type Cylinder and grain moisture content 13-15% superiority significantly and also overlap between the machine type Cylinder to speed 0.921 in all studied traits except the percentage of breakage grain . Compared overlap to the machine type Hammer with moisture content of grain and two speed in all studied traits.The best results have come from the triple overlap among machine type Cylinder, grain moisture (13-15%), and speed 0.921 in all studies tirats except percentage of breakage grain which gives the best result with overlap0.717 to moisture content of grain 13-15% and machine type Cylinder . Key worde:Production Process, Power Consumeption, Milling Recovery, Degree of Milling, Percentage of Breakage of grain , Milling Efficiency.