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Design a process to produce a 0.5 cm-diameter steel shaft having excellent toughness, yet excellent wear and fatigue resistance. The surface hardness should be at least HRC 60, and the hardness 0.01 cm beneath the surface should be approximately HRC 50. Describe the process, including details of the heat-treat atmosphere, the composition of the steel, temperatures, and times. Present your solution as a clearly ordered sequence of steps.
a storage tank consists of a cylindrical section that has a length and inner diameter of l2 m and di1 m respectively
the surface of a steel machine member is subjected to the stresses of sigma1100 mpa sigma220 mpa sigma3-80 mpa. what
the surface pressure of venus is about 90 bar and the surface temperature is ap-proximately 880 degrees f. the
a 50 kg copper block initially at 350 degree c is quenched in a closed rigid insulated tank containing 120 l of liquid
one kg of execute a carnot power cycle. during the isothermal expansion, the water is heated until is is a saturated vapor the pressure is and the quality is. evaluate the heat and work for each process.
1000 kj of heat are added to 10 kg of saturated liquid ethanol at 78.4degc and 1 atm. at these conditions the latent
a steam power plant implements an ideal reheat rankine cycle. steam enters the inlet of the high-pressure turbine at 8
a large food processing plant requires 2 lbsec of saturated steam or slightly superheated steam at 80 psi which is
steam at 500 lbfin2 500 f enters a well insulated valve operating at steady state with a mass flow rate of .11 lbs
An ideal vapor-compression refrigeration system operates at steady state with Refrigerant 134a as the working fluid. Superheated vapor enters the compressor at 30 lbf/in2, 20F, and saturated liquid leaves the condenser at 140 lbf/in2. The refriger..
the thermal characteristics of a small dormitory refriderator are determined by performing two separate experemints
large cylindrical bales of hay used to feed livestock in the winter months are d2m in diameter and are stored
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