The Introduction of Aluminum Brazing Welding Material
Aluminum brazing welding material are usually used to wet and spread on the surface of the base metal, fill the gap between the base metal, and form metallurgical connections after cooling and solidification.
It generally includes clad aluminum brazing material, self-brazing aluminum solder and aluminum soldering paste powder.
The clad aluminum brazing material
The Introduction of Clad Aluminum Brazing Material
The clad aluminum brazing material are generally composed of core materials and cladding layers: core materials are generally composed of aluminum manganese 3 series aluminum alloy, which plays the role of intensity support and heat dissipation.
The cladding layers is composed of aluminum-silicon 4 series alloy 4343, 4045, 4047 or other aluminum alloy, which plays a role in welding or improving the performance of the overall material.
The form of clad aluminum brazing material is aluminum alloy cladding sheet plate, coil strip, foil, etc.
The specifications of brazing aluminum sheet foil coil strip
Alloys: 4045, 4047, 4043, 4032, 4104, 4145, 4343, 4A45, 4A43, 4A17, 4A13, etc.
Temper: O, H12, H22, H14, H24, H16, H26, H18, F, H112 etc
Sheet width: 450mm-2200mm; Coil width: 5mm-2200mm
Length: 500-15000mm or in coil, outer diameter of coil: Max 2500mm
Delivery shape: aluminum foil: 0.05mm~0.20mm; plate; coil; strip
Inner diameter of coil strip: 75mm, 76mm, 150mm, 152mm, 200mm, 250mm, 300mm, 405mm, 505mm
Paper core or aluminum core, outer diameter according to customer requirements.
The characteristics of brazing aluminum sheet foil coil strip
- The Aluminum Cladding Fin and Sheet have advantages of compact structure, high heat dissipation efficiency, and good resistance to collapse.
- Aluminum brazing sheet have good moisturizing and liquidity.
- Aluminum Brazing Fin and Sheet have good corrosion resistance.
- Clad aluminum brazing sheet have good processed.
The application of brazing aluminum sheet foil coil strip
The Brazing aluminum sheet foil coil strip, also known as Al-SI brazing material, is the most widely used aluminum-based brazing material. The typical AL-SI dual series of brazing material is 4343, 4045, 4047, etc.
The Brazing aluminum sheet foil coil strip are widely used in automotive heat exchange systems, such as engine radiators, engine oil radiator, medium refrigerator, air -conditioning condenser and evaporator etc.
The classification of brazing aluminum sheet foil coil strip
Brazing aluminum sheet foil coil strip can be divided into aluminum alloy clad materials such as single -sided cladding, double -sided cladding, asymmetric cladding, and multiclad aluminium brazing sheet etc.
The non-clad materials of aluminum alloy are mainly supporting the use of clad aluminum brazing material for manufacturing various welding heat exchangers.
The typical combination of welding brazing alloy is 4045/3003/4045, 4045/3003/7072, 4045/3A11/4045, 4045/7A11/7072, 4045/6951/4045.
The production process of brazing aluminum sheet foil coil strip
The raw material for Clad Aluminum Sheet production is aluminum ingot or large flat ingot. The use of large flat ingots can save the aluminum ingot melt. The production links mainly include four processes: melting, hot rolling, cold rolling, and refinement.
In the melting and casting process, the aluminum ingot and other trace metals are matched and purified, and heated in the melting and casting furnace to reach the melting temperature, and then combined and purified to form aluminum alloy.
The final form of the product is aluminum cladding brazing sheet plate, aluminum cladding brazing Coil strip, aluminum brazing foil. These products are then sent to downstream customers for stamping and welding processes. Finally, various heat exchangers are formed.
Self-brazing Aluminum solder
The introduction of self-brazing aluminum solder
Self-brazing Aluminum solder, the alloy system is an AL -Si -rare earth four -type alloy. The melting temperature range is 530-580 ℃, which can be made with a diameter of 1.4-2.5mm aluminum brazing wire rod, ring shape, sheet shape, etc. Depending on the degree of processing hardening, the diameter of the Aluminum Welding Wire Rod varies.
The three major features of self-brazing aluminum solder
- There is no need for welding paste and welding flux during welding, with the advantage of environmentally friendly and efficient.
- Easily docking the current automation production process requirements.
- There is no corrosive residue after welding, no need to clean.
The classification of self-brazing aluminum solder
- Self-brazing aluminum solder includes
- Flat aluminum brazing rings,
- Aluminum flux paste,
- Aluminum brazing washer,
- Solid aluminum welding wire,
- Flux cored aluminum wire,
- Copper aluminum flux cored wire,
- Aluminum filler rod,
- Flux core aluminum welding wire.
The application of self-brazing aluminum solder
Self-brazing aluminum solder are mainly used in welding of aircraft engine groups, automotive air -conditioning heat exchangers, refrigerated air-conditioning all-aluminum evaporator, condenser, refrigerator freezer, electric aluminum bar and aluminum alloy tubes etc.
Common aluminum alloys such as 1 Series (1060/1100, etc.), 3 Series (3003/3026, etc.), 5 Series (5052, etc.), 6 Series (6061/6063, etc.) can be used.
Aluminum soldering paste powder
Scope of application: welded aluminum and aluminum alloy with zinc -based, aluminum-based ingredients, aluminum and copper alloys, steel and stainless steel. This pupae can be used as a pharmaceutical core welding wire (4047P).
Product characteristics: It has good liquidity, strong anti-oxidant capabilities, does not absorb moisture, is insoluble in water, has no corrosion of workpieces, and is free of cleaning after welding.
Physical state: powder, paste
Execution standards: JB/T6045-2015
Main ingredients: salt, compound fluorine, active agent
Welding method: flame welding, stove -welding, high-frequency welding and other methods.
Welding operation: The ingredients that are compatible with this series can be pink, silk, ring, or aluminum feed plate. This series of crickets are more convenient to use in a paste. First apply the aluminum welding auxiliary to the welding site. For the flame brazing, it is quickly heated to the melting temperature of the agent and then adds the material. Then, full the high strength welding port after solder melting. For the furnace brazing and high-frequency brazing, attention should be paid to the heating speed and the welding temperature of the welding.
Packing: 500g/box, 20kg/box; 500g/bag, 40kg/box; 500g/bag, 30kg/barrel, etc.
Application of aluminum welding aids: radiator, refrigerator pipelines, refrigeration accessories, condenser, car accessories, electrical appliances, etc.
The typical alloy and application of aluminum brazing welding material
4A11 aluminum sheet coil block bar
4A11 aluminum sheet coil block bar is Al-Cu-Mg-Si series alloy. It has malleable, castable, small thermal expansion coefficient, thermal strength and good anti-wear performance etc advantages.
It is mainly used for processing forgings and blanks, for the manufacture of pistons and cylinders, and other parts that work at high temperatures. It is widely used in the field of rail transit.
4A13 brazing aluminum sheet foil coil strip
4A13 brazing aluminum sheet foil coil strip belongs to Al-Si brazing alloy. The Si content of 4A13 alloy is lower than Si content of other brazing materials, which makes its price relatively cheap, so 4A13 alloy has become the first choice for users.
It is often used as plate and strip brazing material, brazing layer for heat sink brazing plates and foils.
4A17 brazing aluminum sheet foil coil strip
4A17 brazing aluminum sheet foil coil strip belongs to the Al-Si series brazing alloy.
It has better brazing performance, lower melting point, and strong molten pool wetting ability.
It can be produced as plate-shaped and strip-shaped brazing materials. It is usually used for the welding of radiators, and the brazing layer of radiator brazing plates and foils.
4032 aluminum sheet coil block bar
4032 aluminum sheet coil block bar is a typical eutectic aluminum silicon alloy, with medium mechanical properties (tensile strength 350MPa), low thermal expansion coefficient, excellent wear resistance and corrosion resistance, and high temperature strength.
It is widely used in the manufacture of internal combustion engine pistons and engine cylinder blocks.
4043 brazing aluminum sheet foil coil strip
The Si content of 4043 brazing aluminum sheet foil coil strip is 4.5% to 6.0%, which is a hypoeutectic alloy in the aluminum-silicon series.
It has the characteristics of good fluidity, low solidification shrinkage and resistance to welding hot cracks, and good castability and weldability. It is used in the production and processing of aluminum-silicon alloy welding wire, which is a large amount of brazing filler metal.
4004 brazing aluminum sheet foil coil strip
4004 brazing aluminum sheet foil coil strip as a kind of Al-Si alloy, is used as the cladding layer of cladding aluminum plate and strip foil. It is often rolled together with 3003 aluminum alloy to form an aluminum alloy composite material.
It is often used as a brazing layer for brazing sheets, heat sink brazing sheets and foils.
4045 brazing aluminum sheet foil coil strip
4045 brazing aluminum sheet foil coil strip belong to the A-Si series alloy and near eutectic alloy, which cannot be heat-treated and strengthened. It has the advantages of excellent welding performance, casting performance, good wear resistance, high penetration, high specific strength, and low expansion coefficient etc.
It is often used as a brazing material for aluminum alloys, and is also often used as a cladding for composite plates and composite fins.
4047 brazing aluminum sheet foil coil strip
4047 brazing aluminum sheet foil coil strip is Al Si12 alloy. It has a low melting point and narrow solidification interval, and has a strong molten pool wettability, which can significantly reduce welding heat cracks caused by insufficient solidification shrinkage, and the weld seam has high shear strength.
It is often used as welding filler wire and fusion welding, brazing materials of Al-Cu-Mg, Al-Cu-Mg-Si, Al-Zn-Mg-Cu and other difficult-to-weld aluminum alloys, 6-series aluminum alloys, and cast aluminum with strong hot cracking tendency, is widely used in automotive, air-conditioning, aerospace and military industries.
Why choose Chalco?
Chalco provides premium quality clad aluminum brazing material, self-brazing Aluminum solder and aluminum soldering paste powder, as well as the best technical service in the market, and has a deep knowledge base of how to support customers in their future challenges.
We have more than 30 years of experience in supplying clad aluminum brazing material, self-brazing Aluminum solder and aluminum soldering paste powder for brazed heat exchangers, intercoolers, air conditioner condensers and evaporators etc. and today we have Rolled aluminum for appliances and other niche markets to become a global player.
We have a complete set of domestic advanced aluminum brazing materials research and development, testing and analysis instruments, which guarantees the efficiency of new product research and development and accelerates the transformation of scientific and technological achievements. In addition, our R&D & innovation and validation capabilities can help enhance our customers' competitiveness by saving time and costs in new product development and marketing.
We have passed the IATF16949 certification required by the automotive industry, the AS9100 certification required by the aviation industry, and the DNV BV LR ABS RINA CCS certification required by the shipbuilding industry etc.
The Chalco brand stands for quality, delivery and a strong reputation. With leading technology and globally competitive products, we can continue to develop together with our customers in the future.