BeCu Stamping
Products Description
This series of BeCu stampings is precisely assembled from high-elasticity beryllium copper (BeCu) moving springs and high-conductivity silver contacts (Ag, AgNi, AgSnO₂) via cold riveting, hot riveting, or resistance welding.
The Relay Moveable Spring Riveting Assemblies combine elastic recovery performance with excellent conductivity, maintaining structural stability and reliable contact under high-frequency interruption or continuous current-carrying conditions. They are widely used in:
New Energy Battery Management Systems (BMS)
DC Contactors and Relays
Low-voltage Circuit Breakers and Switches
Charging Piles and Energy Control Modules
Automotive Electronics and Industrial Controllers
These structural components are key elements for achieving "high-reliability on/off control" and "low-energy signal response."
Material Advantages: The Ideal Combination of BeCu + Silver
1. Beryllium Copper (BeCu) Spring Matrix
We use high-quality C17200/C17500 series beryllium copper materials, whose core advantages include:
High Strength and High Elasticity: After precision aging heat treatment, the tensile strength can reach over 1100 MPa, ensuring consistent operation and long-term elastic recovery.
Excellent Conductivity: Compared to ordinary phosphor bronze or brass materials, BeCu maintains strength while retaining good electrical conductivity.
High Fatigue Resistance: Can withstand millions of mechanical cycles without instability, making it ideal for high-frequency switching applications.
Corrosion Resistance and Oxidation Resistance: The surface is not easily oxidized or discolored, adapting to complex environmental conditions.
2. Silver Contacts (Ag / AgNi / AgSnO₂)
The contact components can be flexibly selected according to the application environment:
Pure Silver (Ag): Optimal conductivity, suitable for circuits requiring low resistance.
Silver-nickel (AgNi): Resistant to welding and wear, suitable for medium-current switching.
Silver-tin oxide (AgSnO₂): Excellent arc resistance and weld resistance, commonly used in new energy DC applications.
Diverse material combinations ensure reliable performance across all scenarios, from low-voltage control to high-current interruption.
Manufacturing Advantages: Integrated Process from Stamping to Riveting
High-Precision Stamping Process
Utilizing high-speed precision stamping presses (60-200 ton class), combined with progressive die and compound die designs, ensures stable part dimensional accuracy (tolerance controllable within ±0.01mm).
Die design is developed in-house, enabling complex geometries and multi-segment bending designs to meet diverse assembly space and mechanical requirements.
Surface treatment options include silver plating, nickel plating, and tin plating, effectively improving conductivity and corrosion resistance.
Silver Contact Riveting/Welding Technology
Equipped with automatic riveting machines and resistance welding machines for precise positioning and pressure control, ensuring a strong and smooth connection between the contacts and springs.
The contact riveting area experiences uniform stress, preventing detachment and incomplete soldering.
Multiple forms are available upon request, including double-sided contacts, eccentric In-Mold Silver Riveting Contacts, and symmetrical riveting structures.
Strict Quality Control System
Each batch of Silver Rivet Electrical Connections undergoes rigorous quality control, including optical dimension inspection, conductivity resistance testing, and elasticity and fatigue testing.
Key processes are subject to SPC (Statistical Process Control) to ensure batch consistency.
100% visual and functional inspection is performed before shipment to ensure zero defects in delivery.
Detailed Showcase: Precision Quality from Microscopic to Overall
Clean, burr-free stamping edges ensure smooth assembly.
Precisely symmetrical spring bend angles ensure high consistency in action.
Smooth and full contact riveting surfaces, free from gaps and cracks;
Uniform and glossy surface plating ensures stable conductivity.
Consistent spring thickness and hardness ensure reliable mechanical properties.
These seemingly minor process controls are the core guarantee for the long-term stable operation of high-quality Embedded Silver Contacts in Dies.
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