Question

Centre-line feeding resistance CFR indicates the difficulty of feeding a given alloy in a mould Normally feeding is considered to be difficult if

• A. CFR > 70%
• B. CFR = 68%
• C. CFR = 48%
• D. 48% < CFR < 68%

Hint:

In casting CFR is used to evaluate mold filling efficiency A high CFR indicates difficulties in achieving a full mold without defects

Answer 1

The Correct Option is A

Centre-line feeding resistance (CFR) is a crucial casting parameter that quantifies the resistance to mold filling. A CFR exceeding 70% typically indicates difficult material feeding, potentially leading to incomplete filling or void formation in the final casting. Conversely, lower CFR values signify improved feeding capability.