We adopt a unique casting-rolling composite forming technology. During the process of aluminum liquid transforming from liquid phase to solid phase, solid copper plates are synchronously introduced as copper strips. Through high-temperature and high-pressure rolling by casting rolls, atoms at the interface of the two metals co-penetrate and crystallize, followed by cold rolling and annealing, thus forming a copper-aluminum eutectic material with unique technology.
Q-edge process. Using cold extrusion to form rounded edges, which also makes it more with heat-shrinkable insulating materials, easier for electroplating and tin hanging, and more beautiful in appearance.
Clad layer thickness ratio:
Double-sided eutectic row: (5-20%) copper, (90-60%) aluminum
Single-sided eutectic row: (5-40%) copper, (95-60%) aluminum
Tensile strength 140-190MPa,
Interface peel strength >80-220N/mm,
Shear strength >63.6N/mm,
Elongation after fracture >15%,
Bending angle 90° without cracks,
DC resistance <0.02350Ωmm/m,
Eutectic layer thickness 300-500nm,
Advantages:
Utilizing the existing production advantages of aluminum sheet and strip, and adopting a unique solid-liquid casting-rolling composite method, the produced copper-aluminum eutectic row has a disruptive upgrade in performance such as peel strength, tensile strength, shear strength, current-carrying capacity, and electrical conductivity compared with traditional copper-aluminum composite rows.
The average thickness of the copper-aluminum interface layer of the copper-aluminum eutectic row produced by our company is 380nm, and the eutectic layer materials are AI2Cu and AI4Cu9; it not only realizes the metallurgical bonding between copper and aluminum, but also effectively ensures the bonding strength between copper and aluminum, solving the problem of high resistivity of the transition layer. It has excellent comprehensive performance and avoids phenomena such as burrs, cracking, and delamination that occur in traditional copper-clad aluminum rows during bending, drilling, and punching.
Copper-aluminum eutectic materials can cope with various environmental conditions:

Stability under electrical corrosion: Copper-aluminum eutectic materials show excellent chemical stability and structural strength in electrical corrosion tests, ensuring long-term reliability under extreme environmental conditions.
Optimization of heat dissipation performance: The unique structure of copper-aluminum eutectic provides efficient heat conduction channels, significantly improving heat dissipation efficiency and effectively preventing performance degradation and equipment damage caused by overheating.
Durability against thermal cycles: After 100 thermal cycle tests, copper-aluminum eutectic materials show good anti-fatigue characteristics, ensuring the stable operation of dense bus ducts under frequent temperature changes.

The product adopts a unique solid-liquid casting-rolling composite forming technology. During the process of aluminum liquid transforming from liquid phase to solid phase, solid copper sheet strips are synchronously introduced and rolled by casting rolls at high temperature and high pressure, so that atoms at the interface of the two metals co-penetrate and crystallize to form a unique copper-aluminum eutectic composite sheet. Compared with copper-aluminum composite sheets produced by traditional extrusion-drawing, welding composite, and explosion composite methods, it has a disruptive upgrade in performance such as peel strength, current-carrying capacity, electrical conductivity, tensile strength, and shear strength. This product replaces copper with aluminum, and its performance is better than copper, which can reduce the user's original pure copper application cost by more than 40%.
It can be widely used in fields such as electrical engineering, electrical appliances, electronics, photovoltaics, energy storage, military industry, ships, rail transit, and construction.
Copper-aluminum eutectic composite row, power accessories, wire connectors
Production equipment such as aluminum sheet and strip casting-rolling heat quenching, cold rolling, cleaning, slitting, stamping, and key technologies such as aluminum-based crystal combination and recrystallization.
Copper-aluminum eutectic sheet and strip is a product independently developed by the company on the basis of existing aluminum sheet and strip casting-rolling, and is an international and domestic initiative. The product adopts a unique solid-liquid casting-rolling composite forming technology. During the process of aluminum liquid transforming from liquid phase to solid phase, solid copper sheet strips are synchronously introduced and rolled by casting rolls at high temperature and high pressure, so that atoms at the interface of the two metals co-penetrate and crystallize to form a unique copper-aluminum eutectic composite sheet. Compared with copper-aluminum composite sheets produced by traditional extrusion-drawing, welding composite, and explosion composite methods, it has a disruptive upgrade in performance such as peel strength, current-carrying capacity, electrical conductivity, tensile strength, and shear strength. This product replaces copper with aluminum, and its performance is better than copper, which can reduce the user's original pure copper application cost by more than 40%. It plays a great role in alleviating my country's situation of more aluminum and less copper, and promoting the national "double carbon" economy and national strategic reserve of scarce resources.