Question

Assume we use a milling machine with a 10 kW capacity to make a steel mold, removing 3 cm³/s. If the specific heat of steel equals 470 J/(kg. K), how much hotter will the chips get assuming that 80% of the input power goes toward heating the chips? Consider a steel density of 0.0078 kg/cm³. 909 K 1136 K 727 K 11 K Save Question 2 (5 points) Assume you wish to machine a thin-walled electronics housing from a block of metal. The outside surface of the housing needs a high quality finish, but the inside does not. Which surface of the housing do you machine first? The outside surface The inside surface It doesn't matter Not enough information Save Question 3 (5 points) One of the advantages of machining is that bending is not a problem. Even when working with slender workpieces, elastic deformation is not an issue due to the high relative speed between the tool and the workpiece. True False

          Assume we use a milling machine with a 10 kW capacity to make a steel mold, removing 3 cm³/s. If the specific heat of steel equals 470 J/(kg. K), how much hotter will the chips get assuming that 80% of the input power goes toward heating the chips? Consider a steel density of 0.0078 kg/cm³.
909 K
1136 K
727 K
11 K
Save
Question 2 (5 points)
Assume you wish to machine a thin-walled electronics housing from a block of metal. The outside surface of the housing needs a high quality finish, but the inside does not. Which surface of the housing do you machine first?
The outside surface
The inside surface
It doesn't matter
Not enough information
Save
Question 3 (5 points)
One of the advantages of machining is that bending is not a problem. Even when working with slender workpieces, elastic deformation is not an issue due to the high relative speed between the tool and the workpiece.
True
False

Assume we use a milling machine with a 10 kW capacity to make a steel mold, removing 3 cm³/s. If the specific heat of steel equals 470 J/(kg. K), how much hotter will the chips get assuming that 80% of the input power goes toward heating the chips? Consider a steel density of 0.0078 kg/cm³.
909 K
1136 K
727 K
11 K
Save
Question 2 (5 points)
Assume you wish to machine a thin-walled electronics housing from a block of metal. The outside surface of the housing needs a high quality finish, but the inside does not. Which surface of the housing do you machine first?
The outside surface
The inside surface
It doesn't matter
Not enough information
Save
Question 3 (5 points)
One of the advantages of machining is that bending is not a problem. Even when working with slender workpieces, elastic deformation is not an issue due to the high relative speed between the tool and the workpiece.
True
False

Added by Randy C.

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