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Unformatted text preview: decreases in width from 20 mm to 15 mm while the thickness changes from 0.6 mm to 0.5 mm. a. What is the plastic strain ratio? b. Is this material a good candidate for deep drawing? 6. A forging press has a 2 tonne hammer that is dropped 1 meter. How much energy (J) can be imparted to the impacted forging? 7. A hydraulic press is actuated by four fiveinchdiameter hydraulic cylinders. Oil at 3000 psi is supplied to the cylinders. a. What is the maximum force (tons) which the press can exert? b. What is the total flow (gpm) required to the cylinders if the press is to travel at 1 foot/second? 8. A mechanical press has a 50 mm crank and a 600 mm link. If the crank is turning at 70 rpm, what is the maximum velocity (m/min) of the ram? (Note: whether to take the derivative of the velocity or just plot it to find the maximum is your choice.)...
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 Spring '08
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