Steel shafts with a diameter of 0.1 m (AISI 1010) will be heat treated in a furnace with a gas temperature of 1200 K and a heat transfer coefficient of 100 W/m2K. If the spindles enter the oven at 300 K, how long must they stay in the oven for the axis temperature to reach 800 K?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Steel shafts with a diameter of 0.1 m (AISI 1010) will be heat treated in a furnace with a gas temperature of 1200 K and a heat transfer coefficient of 100 W/m2K. If the spindles enter the oven at 300 K, how long must they stay in the oven for the axis temperature to reach 800 K?

성= 0.05m
T(r,0)=T;=300K
T(0,t)=800K-
Too=1200K
> h=100W/m2-K
Transcribed Image Text:성= 0.05m T(r,0)=T;=300K T(0,t)=800K- Too=1200K > h=100W/m2-K
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