Noticias

CCA bimetal busbar is a copper-clad aluminum bimetallic conductive bar. It is a "new type of conductor material". It not only has the excellent conductivity of copper, but also has the characteristics of low aluminum density. It is currently a "strategic emerging" supported by my country. industry". The CCA bimetal busbar produced by Chalco Aluminum is different from the traditional hydrostatic extrusion method, rolling and pressing method, cladding welding method, casing rolling method and other traditional production processes, but adopts the original "horizontal continuous casting and high-efficiency molding—— "Rolling" technology enables the bonding interface of the copper-aluminum composite row to achieve a certain metallurgical bond, enhances the shear strength of the two metal interfaces, ensures the mechanical and electrical properties of the product, and improves the stability of the product.  



Features of CCA bimetal busbar: 　
1. Unique composite performance, the copper-aluminum interface is a metallurgical bond, the product performance is high, and it has the characteristics of copper conductivity and low aluminum density; 　
2. High interface bonding strength, excellent electrical conductivity, and excellent machining performance;
3. The thickness of the copper layer is large and adjustable, suitable for transmitting large currents; 　
4. Light weight, convenient for transportation and installation; 　5. Obvious economic benefits: save copper resources and reduce production costs.  

Name	Unit	Copper busbar		CCA bimetal busbar（VPcu=25%）		Aluminum busbar
		Hard	Soft	Hard	Soft	Hard	Soft
Tensile strength	MN/m2	-	≥206	≥170	≥115	≥118	≥68.6
Elongation	%	-	≥35	≥3	≥28	≥3	≥20
Maximum resistivity	Ω·mm2/m	0.01777	0.017241	0.02548	0.02498	0.029	0.028264
Minimum volume conductivity	%IACS	97	100	67.7	69	59.5	61
Density	g/cm3	8.89	8.89	4.25	4.25	2.703	2.703
Coefficient of linear thermal expansion	1/℃	17×1010-6	17×1010-6	22.5×1010-6	22.5×1010-6	23×1010-6	23×1010-6
Temperature coefficient of resistance	1/℃	3.81×1010-3	3.93×1010-3	3.9×1010-3	4.0×1010-3	3.93×1010-3	4.03×1010-3

 
  Application of CCA bimetal busbar:   　
1. Electrical equipment manufacturing: mainly including low-voltage, medium-voltage, high-voltage power distribution, busbar systems, rectifiers, motor windings, etc.; 　
2. Crane rail supply system, vacuum switchgear, generator set, substation, bimetallic connector in aluminum foil winding transformer, etc.; 　
3. Wind power and solar photovoltaic fields: mainly including reactors, inverters, etc.; 　
4. Railway, aerospace, high-speed ferry, etc.