用120MM*120MM*1400MM方坯轧成25MM的圆钢,若加热时有2%的烧损,问轧后的圆钢长度是多少?
正确答案:
V1=V2
(1-2%)*120*120*1400=3.14*25/4*L
L=4*0.98*120*120*1400/(3.14*25*25)=40269mm
轧后圆钢长度为40269mm。
(1-2%)*120*120*1400=3.14*25/4*L
L=4*0.98*120*120*1400/(3.14*25*25)=40269mm
轧后圆钢长度为40269mm。
答案解析:有
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