19.14 What is the relationship between the coefficient of friction and the friction angle in the orthogonal cutting model? Answer. The relationship is that the coefficient of friction is the tangent of the friction angle ( = tan ). 19.16 How is the power
20.16 A slab milling operation is performed on the top surface of a steel rectangular workpiece 30 cm long by 6.25 cm wide. The helical milling cutter, which has a 7.5 cm diameter and ten teeth, is set up to overhang the width of the part on both sides. C
39.4 A plastic extrusion process produces round extrudate with a mean diameter = 28.6 mm. The process is in statistical control and the output is normally distributed with standard deviation = 0.53 mm. Determine the process capability. Solution: Process c
27.9 A U-groove weld is used to butt weld 2 pieces of 7.0-mm-thick titanium plate. The U-groove is prepared using a milling cutter so the radius of the groove is 3.0 mm. During welding, the penetration of the weld causes an additional 1.5 mm of material t
24.4 For the following application, identify one or more nontraditional machining processes that might be used, and present arguments to support your selection. Assume that either the part geometry or the work material (or both) preclude the use of conven
17.1 A 42.0-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.
14.10 Given a large volume of metallic powders, all of which are perfectly spherical and having the same exact diameter, what is the maximum possible packing factor that the powders can take? Solution: The maximum packing factor is achieved when the spher
9.8 During pouring into a sand mold, the molten metal can be poured into the downsprue at a constant flow rate during the time it takes to fill the mold. At the end of pouring the sprue is filled and there is negligible metal in the pouring cup. The downs