Metal Piercing and Forming
Metal piercing is the first stage of metal stamping that piercing a panorama of the flat springs then forming the parts into a three dimensional flat clips.
Progressive stamping
For flat springs, progressive stamping is more efficiency, but it will produce more waste, and the molding cost is also more expensive.
Four-Slide / Multi-Slide Stamping
Four-slide is an ideal way for flat metal springs which save the cost of material and tooling.
Deep Draws
Deep drawing is a kind of mechanical processing technology which uses the die to punch the blank into various open hollow parts and increase the height.