1.Research and development background of Environmentally friendly self-brazing Aluminum solderWith the development of the economy, the consumption of resources has become more and more huge. Take non-ferrous resource copper alloy as an example,Our country uses more than 6 million tons of copper each year. According to research, copper resources will be completely consumed in the next 30-40 years, so solving the shortage of copper resources is an important direction of scientific research in recent years....
1.Research and development background of Environmentally friendly self-brazing Aluminum solder
With the development of the economy, the consumption of resources has become more and more huge. Take non-ferrous resource copper alloy as an example,
Our country uses more than 6 million tons of copper each year. According to research, copper resources will be completely consumed in the next 30-40 years, so solving the shortage of copper resources is an important direction of scientific research in recent years.
In current research, aluminum is the most important alternative resource for copper. It can not only significantly reduce production costs, but also adapt to the current development trend of light weight and environmental protection, which makes more and more industries start to choose aluminum alloy. It is no exaggeration to say that the global manufacturing industry is now setting off a material revolution that replaces copper with aluminum.
Product series: AL-47-S, AL-47-Y series
2.The Product specifications and performance of Environmentally friendly self-brazing Aluminum solder
|
Type |
Ingredient |
Melting point temperature / ℃ |
Wire diameter specification /mm |
Shape |
Using Method |
Joint strength |
Corrosion resistance |
|
AL-47-S |
Aluminum- silicon- potassium- Rare earth |
565-580 |
Φ1.4 /Φ1.6/Φ2.0 etc |
Wire Shape; Circle Shape |
Flame brazing ; Furnace Brazing ; High frequency brazing |
Tensile Strength≥90Mpa |
Neutral salt spray test for 1000 hours without leakage |
|
AL-47-Y |
Aluminum- silicon- potassium |
565-580 |
Φ1.6/Φ2.0 etc |
3.The Difficulties in traditional aluminum alloy brazing
1) The melting point of the welding material is similar to that of the base material, and it is prone to poor welding such as overburning and deformation of the base material;
2) The use of flux contains more chlorine, which is easy to absorb moisture and corrode, must be cleaned and is not environmentally friendly.
3) The flux and the solder are separated, the production efficiency is low and it is not conducive to the realization of automated production.
4.The Environmentally friendly self-brazing Aluminum solder has the following three characteristics
1). No solder paste and flux are needed during soldering, which is environmentally friendly and efficient.
2). Easily meet the current automated production process requirements.
3). There is no corrosive residue after welding and no cleaning is required.
5.The Application fields of Environmentally friendly self-brazing Aluminum solder
The Environmentally friendly self-brazing Aluminum solder are mainly used in the brazing of aluminum alloy tubes such as aircraft engine units, automobile air-conditioning heat exchangers, refrigeration and air-conditioning all-aluminum evaporators, condensers, refrigerators and freezers, and power aluminum rows.
Common aluminum alloys such as 1 series (1060/1100, etc.),
3 series (3003/3026, etc.), 5 series (5052, etc.),
6 series (6061/6063, etc.) brazing, can be used.
