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In which of the following molding process strength at the top of the mold is higher?(a) Hand molding(b) Squeezing(c) Jolting(d) Jolt and SqueezingThis question was posed to me during an interview.I'm obligated to ask this question of Methods of Ramming Mold Boxes in section Mold and Mold Making of Casting-Forming-Welding I

Answer»

Correct answer is (b) Squeezing

Easiest explanation: In squeezing, we apply force with the help of a RAM. Due to applied pressure ramming of SAND takes place but the same LOAD is not able to transmit to the bottom of the mold resulting in LOWER STRENGTH at the bottom portion of the mold. But, in jolting impact force act at the bottom. In jolt and squeezing, uniform strength will be achieved. In hand molding, strength will be non-uniform.



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