No corrosive aluminum welding powder manufacturing
USD $1 - $7 /Kilogram
Min.Order:50 Kilograms
Anhui Huazhong Welding Material Manufacturing Co., Ltd.
HZ-QJ208 flux is a fine white powder consisting of a mixture of potassium fluroroaluminate salts which is non-corrosive and non-hygroscopic.
The flux of the highest quality and consistency is produced under stringent process tolerances and a variety of quality control procedures by us.
The flux has a melting point range of 560°C to 574°C, just below the eutectic temperature of the Al-Si brazing alloy.
The particle size lies in the range of 1um to 5um.
During the brazing process the flux dissolves the oxide layer on aluminum and allow the filler metal to flow freely into the joints by capillary action.
After cooling, the flux residue remains on the surface as a thin adherent film and is non-corrosive and non-hygroscopic.
The flux does not require post brazing treatment of the joint area.
HZ-QJ208 flux
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Chemical Composition | K (%) | 28-31
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AL (%) | 16-18
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F (%) | 49-53 | |||
Fe (%) | max | 0.03
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Ca (%) | max | 0.2
| Application tests
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Si (%) | max | 0.05
| Brazing test
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Physical Properties | Appearance | White powder
| Colour test
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Density(20°C) | 2.8g/cm3
| Particles test
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Bulk density | 400-600g/l
| Black residue test
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Melting point(°C) | 560-574 °C
| Packing
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Solubility in water | Nearly insoluble | Paper durms with nner PE bags. | ||
Particle size(50%) | 2~10um | 25Kg net weight. |
Applications |
Automobil: Radiator, Oil cooler, Condenser, Evaporator, Heater core, Accumulator assemblies. |
Household: Kitchen pans and pots, Kettle, Coffee machines, Iron, Clothes dryers. |
BRAZING PROCESS
1. Cleaning : the surface to be brazed must be pre-cleaned to achieve a water wettable surface.
2. Flux application : usually as a water based slurry. Typical the slurry concentration is in the range of 3% to 25%.
3. Drying : To achieve a successfully brazed component it is essential that all water is removed from the flux coating.
A drying process is carried out at approximately 180°C - 250°C.
4.The process requirement of brazing furnace:
- Inert atmosphere - usually nitrogen as this is the cheapest.
- Dewpoint less than minus 40°C.
- Operating temperature range of 575-620°C, coinciding with the melting point of the cladding.
- Rate of heating of the component greater than 20°C per minute.
Packing: Bottle size: 100g / bottle, 250g / bottle, 500g / bottle, 1000g / bottle
Packing specifications: 10kg / box, 12kg / box, 15kg / box, 20kg / box
Packaging: neutral packaging, manufacturers packaging, export packaging.
Technique innovation
Products excellent
Quality first
Customer satisfaction
Anhui Huazhong Welding Material Manufacturing Co., Ltd is established in 2004, and located in Hefei——the central City of Anhui Province. We are specialized in manufacturing and producing brazing materials. Our main products include silver-based brazing filler metal, copper-based brazing filler metal, aluminum-based brazing filler metal and associated brazing flux, flux-cored welding wire etc. Our brazing flux products include: silver welding paste, silver welding powder, copper welding paste, copper welding powder, aluminum welding paste, aluminum welding powder, spot welding paste (water), etc. The available shape of brazing alloys are rod, ring, sheet, strip, wire etc.
FOB / CIF / CIP