| 冒口根部尺寸 | 冒口高度 | 備注 |
| L/T<4時,D=(1.8~2.2)*T | (1.5~2.0)*D | L:鑄件長,T:鑄件厚. |
| L/T>4時,D=3*T | (1.5~2.0)*D | L:鑄件長,T:鑄件厚. |
| D=2*T1+T2 | (1.5~2.0)*D | T1,T2:鑄件厚. |
| D=2*T1+1.5*T2 | (1.5~2.0)*D | T1,T2:鑄件厚度. |
| D=T1+T2+2*R | (1.5~2.0)*D | T1,T2:鑄件厚度.R:圓角直徑. |
| D=2*T1+1.5*(T2+T3) | (1.5~2.0)*D | T2,T3:鑄件厚度. |
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