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Hot rolling produces the desired thickness of low carbon steel. How are granular structure, strength and...
coefficient of low carbon steel: 0.7 (static) 0.6 (kinetic) Also need help with this second homework...
coefficient of low carbon steel: 0.7 (static)
0.6 (kinetic)
Also need help with this second homework problem related to metal forming: 2. Given the following for hot rolling a low-carbon steel plate, calculate the number of rolling passes if the maximum load on the roll in each pass is not to exceed 28,400 lb/in^2: - Diameter of the roll: 20 inches (500 mm) - Stock width: 48 inches (1020 mm) - Initial thickness: 1.5 inch (37.5 mm) - Final thickness:...
26. A 42.o-mm-thick plate made of low carbon steel is to be reduced to 34.0 mm...
26. A 42.o-mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rolling operation. As the thickness is reduced, the plate widens by 4%. The yield strength of the steel plate is 174 MPa and the tensile strength is 290 MPa. The entrance speed of the plate is 15.0 m/min. The roll radius is 325 mm and the rotational speed is 49.0 rev/min. Determine the minimum required coefficient of friction that...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy which has a DBTT of +50°C (c) 304 stainless steel (d) nearly pure coarse grained Fe Identify the modulus, yield stress, tensile strength, ductility, and toughness. Identify the amount of elastic strain at yield stress, tensile strength, point right before fracture, point right after fracture. 2000 -Low C steel, 1800 steel alloy, DBTT +50C 304 stainless pure Fe 1600 1400 1200 t 1000 800...
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is...
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically ? r =0.002 . Suppose a 180,000 kg locomotive is rolling at 25 m/s on level rails. Part A If the engineer disengages the engine, how much time will it take the locomotive to coast to a stop? Express your answer using two significant figures. Part B How far will the locomotive move during this time? Express your answer to two significant figures...
The yield strength ơy of low-carbon steel is moderately dependent on the grain size D, and...
The yield strength ơy of low-carbon steel is moderately dependent on the grain size D, and the relation can be described by the equation: where σ, and k are material constants. The yield strength is 322 MPa for a grain size of 180 um and 363 MPa for a grain size of 22 um. (a) Calculate the yield strength of the steel for a grain size of 11 um. (b) Explain briefly the physical significance of the constant ơ0.
Low carbon steel having a tensile strength of 300 MPa and a shear strength of 220...
Low carbon steel having a tensile strength of 300 MPa and a shear strength of 220 MPa is cut in a turning operation with a cutting speed of 3.0 m/s. The feed is 0.20 mm/rev and the depth of cut is 3.0 mm. The rake angle of the tool is 5 in the direction of chip flow. The resulting chip ratio is 0.45. Using the orthogonal model as an approximation of turning, determine (a) the shear plane angle, (b) shear...
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is...
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. Suppose a 180,000 kg locomotive is rolling at 12 m/son level rails. You may want to review (Pages 138 - 142) . Part A If the engineer disengages the engine, how much time will it take the locomotive to coast to a stop? Express your answer using two significant figures. Δt = s SubmitRequest Answer Part B How far will the locomotive...
1. You have a sheet of carbon steel with a thickness of 1 mm, a length...
1. You have a sheet of carbon steel with a thickness of 1 mm, a length of 300 mm, and width of 150 mm. You are testing it in a furnace that is flowing hot air over the sheet at 3 m/s at T 1 300 K along the length of the metal. The carbon steel is initially at 300k and has the following properties p 7850 R/ C 430 //kok, and R, 1490 W/mK. The carbon steel is sitting...
We've been given then stress-strain data of 3 materials pulled to failure: Low Carbon Steel, 7075...
We've been given then stress-strain data of 3 materials pulled
to failure: Low Carbon Steel, 7075 T6 Al, and PMMA. We were given
initial lengths of the material:
With the stress-strain data, our first task was to creak
stress-strain curves which I did in excel.
Low Carbon Steel:
7075 T6 Al:
PMMA:
Please help me find yield strength, ultimate strength, modulus
of elasticity, resilience, the percentage of elongation, and curve
type.
Material Initial Gauge Length (m) Final Guage Length (m)...
During the manufacturing of commercial windows, hot steel ingots are passed though a rolling process and...
During the manufacturing of commercial windows, hot steel ingots are passed though a rolling process and flattened to a prescribed thickness. When the manufacturing process is working properly the ingots should have a mean thickness of 0.75 inches. A random sample of 40 ingots is taken and the mean was found to be 0.725 inches with a standard deviation of 0.092. a. Find a 95% confidence interval for the population mean thickness. b. Find the error bound. c. Interpret the...
coefficient of low carbon steel: 0.7 (static)
0.6 (kinetic)
Also need help with this second homework problem related to metal forming: 2. Given the following for hot rolling a low-carbon steel plate, calculate the number of rolling passes if the maximum load on the roll in each pass is not to exceed 28,400 lb/in^2: - Diameter of the roll: 20 inches (500 mm) - Stock width: 48 inches (1020 mm) - Initial thickness: 1.5 inch (37.5 mm) - Final thickness:...
26. A 42.o-mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rolling operation. As the thickness is reduced, the plate widens by 4%. The yield strength of the steel plate is 174 MPa and the tensile strength is 290 MPa. The entrance speed of the plate is 15.0 m/min. The roll radius is 325 mm and the rotational speed is 49.0 rev/min. Determine the minimum required coefficient of friction that...
1.Below are stress-strain curves for 5 steels. (a) annealed low carbon steel, (b) a steel alloy which has a DBTT of +50°C (c) 304 stainless steel (d) nearly pure coarse grained Fe Identify the modulus, yield stress, tensile strength, ductility, and toughness. Identify the amount of elastic strain at yield stress, tensile strength, point right before fracture, point right after fracture. 2000 -Low C steel, 1800 steel alloy, DBTT +50C 304 stainless pure Fe 1600 1400 1200 t 1000 800...
The yield strength ơy of low-carbon steel is moderately dependent on the grain size D, and the relation can be described by the equation: where σ, and k are material constants. The yield strength is 322 MPa for a grain size of 180 um and 363 MPa for a grain size of 22 um. (a) Calculate the yield strength of the steel for a grain size of 11 um. (b) Explain briefly the physical significance of the constant ơ0.
1. You have a sheet of carbon steel with a thickness of 1 mm, a length of 300 mm, and width of 150 mm. You are testing it in a furnace that is flowing hot air over the sheet at 3 m/s at T 1 300 K along the length of the metal. The carbon steel is initially at 300k and has the following properties p 7850 R/ C 430 //kok, and R, 1490 W/mK. The carbon steel is sitting...
We've been given then stress-strain data of 3 materials pulled
to failure: Low Carbon Steel, 7075 T6 Al, and PMMA. We were given
initial lengths of the material:
With the stress-strain data, our first task was to creak
stress-strain curves which I did in excel.
Low Carbon Steel:
7075 T6 Al:
PMMA:
Please help me find yield strength, ultimate strength, modulus
of elasticity, resilience, the percentage of elongation, and curve
type.
Material Initial Gauge Length (m) Final Guage Length (m)...
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