The Stamping parts' using requirements in stamping process
1. First of all, meet the using requirements of stamping parts: strength, stiffness, conductivity, thermal conductivity, corrosion resistance of stamping parts.
2. To meet the stamping process conditions stamping parts should have good plasticity and surface quality, thickness of the sheet.
The preparation the board of stamping parts:
The blankets are generally larger material sheet, cutting from the shears following the punching process and cutting into appropriate shapes. Among this the main consideration is the fiber direction to cut.
The material properties of the stamping parts in stamping process
The process of material separation can be divided into three phases:
<1> Elastic deformation phase: The initial stage of stamping parts punches the board material, the stamping parts will deform.
<2> Plastic deformation phase: The pressure will increase when the punch downward, making the plastic deformation until the cracks.
<3> Fracture separation phase: The punch continues downward while pressure increasing, micro-crack. Finally, the coincidence, fracture, blanking force declined.
Elastic deformation stage: Blanking power of stamping parts gradually increased.
Plastic deformation stage: Blanking power reach to the top value.