A sufficient amount of pure copper is(4 to be heated for casting a large plate in an open mold. The plate has dimensions: length = 20 in, width=10 in, and thickness =3 in. Compute the amount of heat that must be added to the metal to heat it to a temperature of 21500F for pouring. Assume that the amount of metal heated will be 10% more than what is needed to fill the mold cavity. Properties of the metal are: density=0.324 Ibm/in3, melting point = 19810F, specific heat of the metal=0.093Btu/lbm-F in the solid state and 0.090 Btu/lbm-F in the liquid .state, and heat of fusion = 80 Btu/lbm

A sufficient amount of pure copper is(4 to be heated for casting a large plate in an open mold. The plate has dimensions: length = 20 in, width=10 in, and thickness =3 in. Compute the amount of heat that must be added to the metal to heat it to a temperature of 21500F for pouring. Assume that the amount of metal heated will be 10% more than what is needed to fill the mold cavity. Properties of the metal are: density=0.324 Ibm/in3, melting point = 19810F, specific heat of the metal=0.093Btu/lbm-F in the solid state and 0.090 Btu/lbm-F in the liquid .state, and heat of fusion = 80 Btu/lbm

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter13: Materials Processing

Section: Chapter Questions

Problem 10ETSQ

See similar textbooks

Similar questions

128) With which test is the fluidity of metals measured?A. hardnessB. ViscosityC. CharpyD. SpiralE. Jominy 137) Which is not one of the alloying elements used in steel production? a) Molybdenumb) Aluminumc) Manganesed) Chromiume) Vanadium
As an Engineer describe the complete heat treatment required to produce a quenched and tempered steel microstructure contains 92% martensite and 8% Fe3C, the composition of the martensite is 1.10 C. Steel having a yield strength of at least 100000 psi. Include appropriate temperatures
Steel, Brass, and Copper rods are connected as shown in the figure. Initially, the temperature was 15 degrees Celsius and the stress on the bars is zero. Eventually, the temperature increased to 25 degrees Celsius. Determine the total deformation on the copper. Brass Copper Steel 120 GPa Ecu 17(10-)/°C Est = 200 GPa EDr 100 GPa %3D ast 12(10-6)/°C 21(10-6)/°C acu apr Acu = 515 mm2 ,2 Abr 450 mm? 200 mm2 Ast 300 mm- -200 mm 100 mm O 0.0105mm O -0.0105mm O 0.0057mm O -0.0057mm o o o
The picture below Consist a brass ( EB = 100 Gla and AB and a Aluminum [ EA₁ = 73GPa | AA! each red exists a non- deformable rigid plate. The rods are stress free at 25°C. If the coefficient of thermal expansion for staat is taken 13.106 [m/m°c ] of a steel (E₂ -200CHPA and As = 1500mm ² = 2000 mind) JAT aluminiscent 2 = 1500 mm ² ) kod between at ds and temperature increased to up re increased to 350°C. A steel Find reactionary forces at A_ and _D_Considering RA = RA₁ and Rp = - Rp₁" ? Also find the deflection of plate B. 1.5 m a 18 = 19,10`6 [m/m="c] α = 24,10 € AL B Brass Im t D Aluminum 1.5m [m/m="c} Fant Fall f
The picture below Consist a brass ( EB = 100 Gla and AB and a Aluminum [ EA₁ = 73GPa | AA! each red exists a non- deformable rigid plate. The rods are stress free at 25°C. If the coefficient of thermal expansion for staat is taken 13.106 [m/m°c ] of a steel (E₂ -200CHPA and As = 1500mm ² = 2000 mind) JAT aluminiscent 2 = 1500 mm ² ) kod between at ds and temperature increased to up re increased to 350°C. A steel Find reactionary forces at A_and_D_ Considering RA = Rai and Rp = - Rp₁" ? Also find the deflection of plate B. 1.5 m a 18 = 19,10`6 [m/m="c] α = 24,10 € AL B Brass Im t D Aluminum 1.5m [m/m="c} Fant Fall = $6
Example (a) A Brinell hardness measurement is made on a ductile iron (100– 70–03, air- quenched) using a 10-mm-diameter sphere of tungsten carbide.A load of 3,000 kg produces a 3.91-mm-diameter impression in the iron surface. Calculate the BHN of this alloy. (The cor- rect units for the Brinell equation of Table 6.9 are kilograms for load and millimetres for diameters.) (b) Use Figure 6.29(b) to predict the tensile strength of this ductile iron.
Compute the volume change of a solid copper cube, 40 mm on each edge, when subjected to a pressure of 20MPa. The bulk of modulus for copper is 125GPa. Please solve this problem with complete and detailed solution. Thank you
3. A steel bolt through a 31-in long aluminum tube has the nut turned on until it just touches the end of the tube. No stress is introduced on the bolt or the tube. The temperature of the assembly is raised from 70 to 81 degrees Fahrenheit. The cross-sectional area of the bolt is 0.09 sq. inch and the cross-sectional area of the tube of 0.30 sq. inch. a. Find the thermal deformation (in inches) of the steel bolt. (Write your answer to 6-decimal places.) b. Find the thermal deformation (in inches) of the aluminum tube. (Write your answer to 6-decimal places.) c. Find the stress (in psi) induced in the steel bolt by the temperature change. d. Find the stress (in psi) induced in the aluminum tube by the temperature change.
The assembly consists of a brass shell (1) fully bonded to a solid ceramic core (2). The brass shell [E = 115 GPa, a = 18.7 × 10-6/°C] has dout 50mm. and din = 35mm. The ceramic core [E = 290 GPa, α = 3.1 x 10-6/°C] has a diameter dout = 35mm. At a temperature of 15°C, the assembly is unstressed. AT = 60°C. Find the internal stress in the brass. = 200 mm Brass shell (1) (2) Ceramic core
Another of the steel components manufactured by michael's company is steel railway track sections. Thecomponent has a length of 120m (at a temperature of -10°C) and is to be exposed to a temperaturerange of -10°C to 55°C. In order to calculate the gaps which need to be left between the sections michael'scustomer needs to determine the maximum length which each railway track section will expand to andmichael have been asked to carry out the calculation for them. michael have also been instructed to determinethe percentage change in volume and surface area when exposed to the same initial and finaltemperatures. The customer has informed him that the cross sectional profile of the railway track isrectangular and of breadth 14cm and height 32cm. Assume the coefficient of thermal expansion ofsteel is 12x10-6 /°C. Briefly discuss the changes that occur with in the steel as a result of the change intemperature.
The rigid block of mass M is supported by the three symmetrically placed rods. The ends of the rods were level before the block was attached. Determine the largest allowable value of M if the properties of the rods are as listed (ow is the working stress): Element E (GPa) A (mm²) ow (MPa) Copper 120 900 70 Steel 200 1200 140
NOTE: The aluminum bar was subjected to a temperature drop of 25 °C.