5-38 We can successfully perform a carburizing heat treatment at 1200 °C in 1 h. In an effort to reduce the cost of the brick lining in our furnace, we propose to reduce the carburizing temperature to 950 °C. What time will be required to give us a similar carburizing treatment?
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- Which of the Denavit-Hartenberg parameters for a revolute addition is a variable?A certain component is to be carburized to obtain 0.592 wt % C at a depth of 2.0 mm. After carburizing (for 1.2 hours) the heat treater finds that he achieved 0.4 wt % C at a depth of 2.0 mm His furnace only operates at a 900 *C and maintains a constant atmosphere of 1 wt % C. The steel used has an initial carbon content of 0.2 wt %. How long (in hours) should he carburize to achieve his goal?11-42 Cooling curves are obtained for a series of Cu-Ag alloys (Figure 11-33). Use this data to produce the Cu-Ag phase diagram. The maximum solubility of Ag in Cu is 7.9%, and the maximum solubility of Cu. in Ag is 8.8% The solubilities at room temperature are near zero. 1200 S0% Ag 71,9% Ag 1100 1000 100% Ag 900 J00% Cu 90% Ag 800 84 A 20% Ag 700 Time Figure 11-33 Cooling curves for a series of CurAg alloys (For Problem 11-42). Temperature (C)
- I need the answer by handwritenI need the solution of this question please please please quickly ThanksQ3: With a moderately agitated water, a cylindrical piece of steel with 80 mm diameter is to be quenched. The hardnesses of the surface and center must be at least 55 and 40 HRC, respectively. Which of these alloys will satisfy the following requirements: 1040, 5140, 4340, 4140, 8620, 8630, 8640, and 8660? Cooling rate at 700c Cooling rate at 700°c 170 70 31 18 5.6 3.9 "C 270 170 70 31 18 9 60 2 "Os 5.6 3.9 2.8 100 100 50 4340 80 75 3 Surface 40 4140 Center 8640 30 5140 25 1040 20 10 20 30 40 50 mm 10 20 30 mm Distance from quenched end Equivalent distance from quenched end Figure 3 Figure 4 Hardness, HRC Percent martensite Diameter of bar (mm)
- draw the iron diagram and explain the process taking place from 0-1539 degrees celsius and from .02-6.67% carbon6. Match the proper description of the microstructure depicted below. Put the corresponding number/letter in the box beneath the microstructure. Assume equilibrium cooling conditions. Fe3C Fe3C Fe3CI need the solution of this question please please please quickly