End Cap Contact For Bolt Connection Type Quick Fuse
Welding performance of copper stamping parts Fuse End Cap and Contact 1. Oxidation, copper of Design Welded Joints is easily oxidized in liquid state to form cuprous oxide, which is dissolved in copper liquid. During crystallization, a eutectic with a lower melting point is formed, which exists...
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Product Introduction
Welding performance of copper stamping parts Fuse End Cap and Contact
1. Oxidation, copper of Design Welded Joints is easily oxidized in liquid state to form cuprous oxide, which is dissolved in copper liquid. During crystallization, a eutectic with a lower melting point is formed, which exists on the grain boundary of copper End Cap and Terminal, which reduces the plasticity and easily causes cracks.
2. Stomata, the solubility of hydrogen in liquid copper is very large; after solidification, the solubility decreases again. During welding Outer Cap and Contact, the welding seam cools very quickly, and the excess hydrogen does not have time to escape, so hydrogen holes are formed. In addition, the cuprous oxide at high temperature reacts with hydrogen and carbon monoxide to generate water vapor and carbon dioxide. If they cannot escape completely before solidification, pores will also be formed.
Finished product Fuse Contact Knife Cap quality requirements after soldering
(1)The solder joints Cap and Contact for Hybrid Electric Vehicle Fuses must have sufficient mechanical strength to ensure that the welded parts Cap and Contact for Fast Acting EV Fuse will not fall off or loosen when subjected to vibration or impact. Do not use too much solder to accumulate, which is easy to cause virtual soldering, short circuit between solder joints and solder joints.
(2)The welding Cap and Contact for Battery Pack Fuse is reliable and has good electrical conductivity, and virtual welding must be prevented. False welding means that the solder and the surface of the welded part which Cap and Contact for Electric Vehicle (EV) Fuses do not form an alloy structure. It simply attaches to the metal surface being welded.
(3)The surface of the solder joint Cap and Contact for Battery Power and Auxiliary Fuses should be smooth and clean. The surface of the solder joint Cap and Contact for EV Charging Fuse should have a good luster, and there should be no burrs, voids, and no dirt, especially the harmful residues of the flux. The appropriate solder and flux should be selected.
Material for Fuse Cap
Red copper T2Y2 has excellent electrical and thermal conductivity, good corrosion resistance and processing properties, can be welded and brazed.
| Trade Mark | State | Tensile Strength(Mpa) | Elongation | Hardness(HV) |
| TU0, TU1, TU2 | M(Soft) | ≥195 | ≥30 | ≤70 |
| C10100,C10200,C11000 | Y4(1/4 Hard) | 215-275 | ≥25 | 60-90 |
| T1,T2 | Y2(1/2 Hard) | 245-345 | ≥8 | 80-110 |
| C1020,C1100,C1201 | Y(Hard) | 295-380 | 3 | 90-120 |
| TP1,TP2 | T(Ultrahard) | 350 | -- | ≥110 |
Surface Treatment for End Cap
This end cap is nickle plated.Due to the strong passivation ability of nickel metal, a very thin passivation film can be rapidly formed on the surface, which can resist the corrosion of atmosphere, alkali and some acids. Nickel coating hardness is relatively high, can improve the wear resistance of the surface of the product and improve the life of the fuse-link.
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