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6.下列敘述何者錯誤? (A)低壓鑄造法使用惰性氣體,可用於複雜鑄件 (B)半離心鑄造法轉速低於真離心鑄造法,可得到外圓周組織緻密品質較佳的鑄件 (C)CO2模鑄造法為矽砂中加入 3.5~6%的矽酸鈉
問題詳情
6.下列敘述何者錯誤?
(A)低壓鑄造法使用惰性氣體,可用於複雜鑄件
(B)半離心鑄造法轉速低於真離心鑄造法,可得到外圓周組織緻密品質較佳的鑄件
(C)CO2模鑄造法為矽砂中加入 3.5~6%的矽酸鈉為黏結劑成為鑄砂
(D)直接急冷法又稱 Alcoa 法,適用於銅和銅合金之連續鑄造 。
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5.依含碳量多寡排序何者正確? (A)鑄鐵-碳鋼-熟鐵 (B)鑄鐵-熟鐵-碳鋼 (C)碳鋼-熟鐵-鑄鐵 (D)熟鐵-碳鋼-鑄鐵
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