Differences in means 1. Does quench water temperature affect average yield strength 2. Does O-ring hardness affect average...

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Mechanical Engineering

Differences in means
1. Does quench water temperature affect average yieldstrength
2. Does O-ring hardness affect average leak pressure
3. Is the average pressure capacity of an air tank abovespec
Differences in variances
1. Does quench water temperature affect variation in yieldstrength
2. Do harder O-rings reduce variability in leak pressure
3. Is the variation in pressure capacity of an air tank withinspec

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3.9 Ratings (652 Votes)

1 Assuming the material to be steelWater quenching is probably the oldest heat treatment processused by man to harden steel It can be described as the rapidcooling of metal from the solution treating temperature usually inthe range of 845oC to 870oC for steels Quenching is usuallyperformed in order to prevent ferrite or pearlite precipitation andfacilitate the formation of martensite or bainite In the hardenedcondition steel should have 100 martensite to attain maximumyield strength The severity of water makes the See Answer

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