Products Description
This is a Beryllium Copper Forming designed specifically for automotive electronics and high-reliability relays. Its core strength lies in its unique material composition-stamped from highly elastic beryllium copper. This moving spring utilizes the excellent elastic modulus and fatigue life of beryllium copper to ensure rapid recovery force during high-frequency contact opening and closing. Its precise manufacturing process makes it an indispensable mechanical elastic component in automotive relays, electronic switches, and precision instruments.
Material properties and advantages
High Elastic Modulus
C17200 Beryllium Copper Stamping has an elastic modulus of approximately 130 GPa, significantly higher than that of ordinary copper (approximately 110 GPa). This means that, for the same dimensions, beryllium copper moving springs have a stronger restoring force.
Excellent Fatigue Life
Beryllium Copper Springs is less prone to cracking under repeated bending and impact, achieving a lifespan of hundreds of thousands of cycles, making it ideal for high-frequency switching operations in automotive electronics.
Good Conductivity
Although beryllium is added, its conductivity remains above 90% of that of copper, ensuring current conduction capabilities in certain specialized applications for NGK Beryllium Copper Stamping.
Detailed display
Stamping Section
The precision-stamped section exhibits a typical three-zone structure-a bright band accounts for over 80%, the tear band is fine and uniform, and the collapse angle is controlled within 10% of the material thickness. Precise matching of the die clearance ensures consistent section for Beryllium Copper Flat Spring quality and a burr height of <0.03mm.
Bending Zone Microstructure
No microcracks are present on the outer side of the bending zone, and the grains deform uniformly along the stretching direction; no obvious wrinkles are present on the inner side. After aging treatment for NGK Beryllium Copper Stamping, a dispersed submicroscopic precipitate phase precipitates in the matrix, which is the microscopic basis for achieving high elasticity.
Contact Riveting Interface
The rivet shank completely fills the riveting hole, forming a tight mechanical interlock with the spring substrate. The interface is gapless, ensuring smooth current flow and preventing localized overheating for Beryllium Copper Springs.
Technical Features
Finite Element Optimization of Spring Stiffness and Stress Distribution: CAE software is used to perform nonlinear large deformation and stress analysis on the Beryllium Copper Flat Spring, optimizing its root fillet radius, thickness variation, and free length. This ensures that the stress remains within the elastic range during the working stroke and that the stress distribution is uniform, avoiding early fatigue fracture caused by stress concentration.
Long-Term Stability Design for Fretting Wear and Contact Resistance: For switch and relay applications, by optimizing the stress in the contact riveting or welding areas and the overall rigidity of the NGK Beryllium Copper Stamping, contact resistance drift caused by fretting friction at the moment of switching is reduced, ensuring long-term reliability of signal transmission.
Heat Treatment Distortion Control and Precision Correction: For complex-shaped Beryllium Copper Springs, dedicated heat treatment fixtures and tooling are designed to prevent warping during age hardening. When necessary, cold correction is performed using precision molds to ensure that the final flatness and positional accuracy meet assembly requirements.
Surface Treatment and Plating Adhesion Optimization: Beryllium copper surfaces are prone to oxide film formation, affecting plating adhesion. We employ special activation and pre-plating processes to ensure a strong bond between the gold, silver, or nickel plating layers and the substrate, meeting the requirements for highly reliable welding and low contact resistance.
contact us
If you are developing automotive relays or high-reliability electronic control systems, please submit your technical drawings and performance requirements. We will provide you with professional beryllium copper stamping solutions.
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