2. State one casting defect associated with excess moisture content in the mould.3. State two reasons why moisture is required in moulding sand4. Knust steel foundry shop is to formulate a moulding sand containing sand, clay and wateronly, in the sand to clay fraction of and respectively. If the sand obtained is dry but theclay is moist with moisture content of 15%, how much water should be added to formulate850g moulding sand?

Q.2 The blow holes is the casting defect due to excessive moisture in the mould . In blow holes the…

Answered: 2. 3. State two reasons why moisture is…

Engineering

Mechanical Engineering

2. 3. State two reasons why moisture is required in moulding sand

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A mould having dimensions 100 mm x 90 mm x 20 mm is filled with molten metal through a gate with height h and CS area A, the mould filling time is t1. The height is now quadrupled and the crosssectional area is halved. The corresponding filling time is t2 . What is the ratio t2/t1 ?
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