某轧辊直径为φ500mm，某道次孔型槽深20mm，轧辊转速为100n/min

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问题问答题计算题

某轧辊直径为φ500mm，某道次孔型槽深20mm，轧辊转速为100n/min，计算此道次轧件的轧制线速度是多少？

答案

参考答案：

工作辊径D＝500－2×20＝460mm

轧制线速度V＝3.14×460×100/60＝2407.3mm/s≈2.41m/s

此道次轧件的轧制线速度是2.41m/s。

补全对话，情景问答

把下面的句子组合成小对话，只填序号。
1. A: _____________________ B: _____________________ 2. A: _____________________ B: _____________________ 3. A: _____________________ B: _____________________ 4. A: _____________________ B: _____________________ 5. A: _____________________ B: _____________________	a. What's the fifth month? b. No, it's windy. c. May is the fifth. d. At twelve o'clock. e. What subject do you like? f. When is lunch? g. I like music very much. h. How tall is your mother? i. Is it rainy today? J. She is l.62 metres tall.

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