Statement (I): In the high-velocity forming process, high energy can be transferred to metal with a relatively small weight.

Statement (II): The kinetic energy is the function of mass and velocity.

Explanation:

Statement (I)

The high-velocity forming process is based on the principle of deformation of metal by using very high velocities, provided on the movements of rams and dies.

Since the kinetic energy is proportional to the square of the velocity, high energy is delivered to the metal with a relatively small weight (ram or die).

Statement (II)

The kinetic energy is the function of mass and velocity as the kinetic energy is proportional to the product of mass and square of the velocity.

Here kinetic energy being the function of mass and velocity is not sufficient to explain statement 1

In stead of mentioning function, if it has been mentioned as directly proportional to, then it would have been a proper explanation.

Note:

The following points need to be considered before carrying out high-velocity forming operations.

• Effect of velocity on the ductility and strength of materials. The process is applicable to ductile material only.
• Effects of relative velocity on the blank.
• Effect of friction
• Geometrical stability of the components
• Wave effect: whenever a shock is transmitted through a medium denser than the blank part, it is partly transmitted and partly reflected back as compressive shock waves. This causes the metal to deform towards the die.