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Mechanical Engineering - Workshop Technology - Discussion

Discussion Forum : Workshop Technology - Section 1 (Q.No. 31)
Workshop Technology
31.
The purpose of a riser is to
deliver molten metal into the mould cavity
act as a reservoir for the molten metal
feed the molten metal to the casting in order to compensate for the shrinkage
deliver the molten metal from pouring basin to gate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 2 of 2.
Raghu yadav said:   1 decade ago
Molten metal is delivered through raiser only to the cavity for compensate any shrinkage.
Feroz said:   1 decade ago
I have read that it acts as reservoir. Is that true?
Sudhir said:   1 decade ago
There are two types of shrinkage. One is liquid shrinkage other solid linkage. For compensate liquid shrinkage resit is provided, for solid shrinkage +allowance is provided.
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