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Which of the following is not a function of a core binder?

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in Foundry and Forging by (110k points)
Which of the following is not a function of a core binder?

(a) Hold the sand grains together

(b) Give strength to the core

(c) Not to impart collapsibility to core

(d) Make cores to resist erosion and breaking

I have been asked this question in final exam.

This interesting question is from Binders and its Applications in portion Casting Processes of Foundry and Forging

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Right answer is (c) Not to impart collapsibility to core

The explanation: Core is a disposable item used in Foundry. The core binder has a function of imparting adequate collapsibility to the cores before their purpose is served.

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