Copper End Cap Fitting
Products Description
A copper end cap fitting is essentially a functional metal component that combines electrical performance, mechanical integrity, and environmental protection. Its core design goal is not simply enclosure or coverage, but rather, through a rational geometric structure and material matching, to achieve the following comprehensive effects:
Physical protection of conductors or connection interfaces
Providing stable conductive paths and contact interfaces
Inhibiting oxidation, loosening, and stress concentration
Improving overall assembly consistency and reliability
The outer cap structure is typically made of copper, emphasising conductive continuity and thermal stability; the inner cap structure is mostly made of brass, balancing machining accuracy, dimensional control, and assembly compatibility.
Material Excellence: In-depth Consideration of Purity and Alloying in Material Selection
We insist on controlling quality from the source of electrolytic copper: T2 (Y2) / C11000 Copper (Preferred for Outer End Cap):
* Extremely high electrical and thermal conductivity:
Copper content ≥ 99.90%, ensuring consistent thermal conductivity, particularly suitable for electronic packaging applications requiring laser welding or induction brazing.
Excellent ductility: Uniform material flow during deep drawing effectively avoids bottom thinning and micro-crack formation.
H62 / C28000 Brass (Preferred for Inner Cap):
High mechanical strength and wear resistance: Compared to copper, brass inner caps offer greater support rigidity, resisting higher assembly stresses when used as internal supports or fasteners.
Good machinability: Facilitates high-precision secondary machining, such as internal thread tapping or precision milling of stepped surfaces.
Manufacturing Advantages: Precision Forming Processes Across Dimensions
Multi-station Progressive Deep Drawing
Unlike single-pass stamping, we employ up to 12 progressive drawing passes to minimize material hardening and ensure the uniformity of the Round Polished Copper End Cap's wall thickness within 0.02 mm.
Zero-burr Trimming Technology
Online automated trimming ensures Copper End Caps Round opening flatness, providing a perfect benchmark for robotic gripping and positioning on automated assembly lines.
Vacuum Annealing Process
Each batch of Copper End Cap Solder Fittings undergoes stress relief in a vacuum environment after critical processes. This maintains a non-oxidized surface while restoring the material's toughness, preventing cracking during customer welding.
Application Advantages: Wide Industry Adaptability
Refrigeration and Heating, Ventilation and Air Conditioning (HVAC)
It is the standard configuration for sealing the condenser and evaporator pipe ends of residential air conditioners and commercial central air conditioning systems. Its excellent resistance to Freon and refrigeration oil ensures the long-term operation of the air conditioning system.
Automotive Thermal Management Systems
Suitable for automotive water tanks, oil coolers, and battery cooling plates. In the high-frequency vibration environment of automobile driving, the inner and outer cap combination structure provides more reliable vibration resistance and anti-loosening performance than a Tin Plated Copper End Caps.
Medical and Precision Instruments
In medical gas delivery pipelines and analytical instruments, the non-toxic and antibacterial properties of Copper End Cap Solder Fittings, along with the precision machining characteristics of brass, meet the stringent requirements for fluid purity.
contact us
Leveraging our expertise in precision copper alloy forming engineering and customised cell packaging design, we look forward to collaborating with your purchasing and technical teams to explore optimal copper end cap solutions for specific battery/capacitor projects. Please visit our inquiry page now to begin efficient technical exchange and cooperation.
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