Hearth rolls structure optimization and cost control (3)

3. Optimization of the structure of hearth rolls:                                 Link above
(1). Diameter of outstretched shaft affect the mechanical properties of the hearth rolls. The results are given in Figure 3 below we can see, with the increase of the diameter, the value of the torsion deformation resultant vector decreases. From 0.664E-3 down Low to 0.512E-3, to improve the Stiffness of hearth rolls. But when diameter of elongate shaft increases from 40mm to 60mm, the maximum stress values did not change significantly, diameter of outstretched shaft d generally selected about 60mm when designing.
(2) Effect of thickness of ring plate to mechanical properties of hearth roll. The results are given in Figure 4 below shows. When changes in the thickness of the ring plate of hearth roll (t = 50mmt = 100mm), Impact strength and stiffness of the hearth rolls more obvious. When the thickness of the ring plate is reduced, the strength and rigidity of it is weakened. Thereby increasing the possibility of damage of the hearth rolls under billet weight motor drive and furnace temperature interaction.

The effect of elongate shaft diameter d on the static performance of the hearth rolls
The effect of elongate shaft diameter d on the static performance of the hearth rolls——-Fig

 

 

 

 

 

 

 

 

to be Continue……

 

 

 

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