Because the metal flow in a die and the materials grain stru

Because the metal flow in a die and the material\'s grain structure can be controlled, forged parts have good strength and toughness. True/False If there is an insufficient volume of material to fill the die cavity completely, the web may buckle during forging and develop laps. True/False In design of forging dies, it should be kept in mind that the part will flow in the direction of the highest resistance. True/False In flat-rolling process, smaller diameter rolls can be used to reduce the rolling force.True/False In flat-rolling process, the velocity of the strip decreases initially and then increases as it moves through the roll gap. True/False In flat-rolling process, the velocity of the strip increases first, then attains the velocity of the rollers and finally reaches the maximum value at the exit. True/False Shearing with a die having symmetrically-beveled surface can be preferred to increase punch force. True/False Springback (i.e., elastic recovery after plastic deformation) in forming operations can be compensated for by blanking the bend area. True/False In bending processes, because of edge cracking, the width of the part becomes smaller in the outer region and larger in the inner region than the original width. True/False Rolling with small-diameter rolls results in tensile residual stresses on the surface and compressive residual stress in the bulk of the work piece. True/False

Solution

I- True

II- True

III- False (the material flows in the directio of the least resistance)

IV- True (by reducing the area of contact)

V- False (velocity increases)

VI- True

VII- False (to reduce the punch force)

VIII- True

IX- False (the opposite)

X- False (the opposite)