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简答题计算题:用厚度4mm钢板制成一个不带盖的长方形水箱,长2000mm宽1500mm,高1000mm,不计焊缝质量,求水箱制件的质量为多少千克?(取密度为7.85KG/cm3
  • M1=7.85×S1×△t
    =7.85×{[2-(2×0.004)]×(1-0.004)}×4
    =62.298(kg)
    M2=7.85×S2×△t
    =7.85×【1.5×(1-0.004)】×4
    =46.912(kg)
    M3=7.85×S3×△t
    =7.85×(2×1.5)×4
    =94.2(kg)
    M总=2M1+2M2+M3
    =312.62(kg)
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