End Cap And Terminal For Fuse

1.Chemical composition of End Cap and Terminal for Fuse:

Copper + Silver Cu + Ag: 99.90

Bismuth Bi: 0.001

Beryllium Sb: 0.002

Arsenic As: 0.002

Iron Fe: 0.005

Lead Pb: 0.005

Sulfur S: 0.005

2.Welding performance of copper stamping parts Fuse End Cap and Contact

(1)Strong thermal conductivity, Fuse Copper Contact Knife Cap has high thermal conductivity, and requires a high-power heat source; preheating the weldment can be used for welding End Cap and Contact.

(2)The fluidity is large, and the molten copper liquid has good fluidity, and can only be welded in the flat welding position. If one-side butt welding is to be performed in a spatial position, a backing plate must be added to ensure penetration and obtain good forming.

(3)The thermal expansion and cold contraction are large, and the coefficient of linear expansion of Copper End Cap and Contact Welding Components is large, and the phenomenon of thermal expansion and cold contraction during the welding process is particularly obvious, so the deformation after welding is large.

The purpose and difference of Copper Contact or Brass Cap tin, silver and nickel plating

1. The purpose of Copper End Plate tin plating, silver plating and nickel plating

(1) The purpose of copper tin plating: to effectively prevent Copper Contact Cap from getting wet and green, and also to prevent Fuse Copper Cap oxidation/sulfurization and blackening to affect electrical contact. The service life of Red Copper Contact after tin plating is extended several times or even ten times, which greatly improves the service life of Fuse Red Copper Contact and plays a considerable role in the protection of red copper Fuse Terminal.

(2) The purpose of silver plating on Copper Fuse Cap: to improve the conductive contact resistance and improve signal transmission. (Silver has the best performance, is easy to oxidize, and also conducts electricity after oxidation).

(3) The purpose of nickel plating on Copper Outer Cap: for primer or appearance, to improve corrosion resistance and wear resistance, (chemical nickel is the modern technology in which the wear resistance exceeds that of chrome plating).

WELDING TECHNOLOGIES

What are the advantages of high temperature tunnel furnace for Fuse Copper Cap?

(1)Compatible with welding and baking processes of various specifications;

(2)It can weld the Contact Caps of power fuses, photovoltaic fuses, and new energy vehicle fuses;

(3) Hot air management system for Copper End Caps, efficient hot air convection conduction, sufficient heat, fast heat compensation, no temperature channeling;

(4)Unique cooling zone structure for Cap Copper, the furnace cavity does not need to be cleaned frequently, and the waste gas such as flux is filtered and discharged;

(5)High-precision load-bearing herringbone mesh belt drive support structure, special hardening treatment for Custom Copper Caps, can bear 80KG-100KG products without deformation;

OUR CERTIFICATES

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