Hinge

Hinges are produced from 17-4PH and 440L stainless steel through MIM forming matched with PVD coating for smartphones and tablets.

MIM integrated molding shapes intricate rotating thin-wall structures with high sintered density and steady dimensional precision, reducing material loss and assembly gaps of traditional machining.

17-4PH and 440L undergo aging hardening after sintering to obtain high tensile strength and hardness, effectively resisting abrasion and deformation for dynamic load-bearing rotating parts.

After precision deburring and surface trimming, uniform ultra-thin PVD hard coating covers all micro-grooves and edges, upgrading wear and corrosion resistance without disrupting assembly tolerances.