Mechanical Engineering - Workshop Technology - Discussion

Discussion Forum : Workshop Technology - Section 1 (Q.No. 48)
48.
In a four high rolling mill, there are four rolls out of which
one is working roll and three are backing up rolls
two are working rolls and two are backing up rolls
three are working rolls and one is backing up roll
all of the four are working rolls
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Sohel said:   9 years ago
In Four Roll Mill, it has a roll stand with four parallel rolls one above the other.

The top and the bottom rolls rotate in opposite direction as do the two middle rolls.

The two middle are smaller in size than the top and bottom rolls which are called backup rolls for providing the necessary rigidity to the smaller rolls.

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