Aluminum brazing with tin
Are you interested in soldering aluminum with tin from the supplier company AvecGlob? Here you will find the necessary information on this topic.
Features and complexity of the process
Alloys of tin with copper have an excellent cooling capacity, which is significantly superior to aluminum. Therefore soldering aluminum with tin is the preferred material for good heat dissipation for telecommunications and high power electronics. For large electronic enclosures, a hybrid design that provides copper sections of localized radiators attached to an aluminum frame with good thermal contact can significantly improve the cooling performance of the radiator package.
The connection of copper with aluminum creates problems. Cu and Al can not be easily welded because of the resulting intermetallic compounds that are formed during soldering. On the other hand, soldering can not be performed, since the melting point of aluminum is lower than the typical Cu-Ag copper fillers (silver solders) used for brazing copper. These problems leave «soldering» as the process of joining a metal filler by choice. Direct soldering of copper to aluminum to Al has problems: silver solders do not adhere well to aluminum without pre-coating with aluminum by nickel. Another option is the use of aggressive fluxes containing nickel, which is incompatible with the soldering of radiators. In addition, such fluxes are quite scarce.
Supplier — AvekGlob Company — offers various types of products from tin of domestic and foreign production, which meets the requirements of standards. The products are offered at affordable prices from the manufacturer. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Use of tin solders
Soldering of copper and aluminum, as well as of pure aluminum with tin solders, occurs at a temperature of 250 ° C. This soldering temperature is much lower than the softening temperature for the aluminum frame and small enough that the mismatch of thermal expansion between the dissimilar metals does not distort the connected assembly during its periodic cooling or heating.
Aluminum tin soldering is used to create small electrical and / or thermal connections or seals for other metals or ceramics, while an aluminum compound is used to connect large areas for both thermal and structural purposes.
Soldering with aluminum tin is used in sensors, electronics and electricity where aluminum contacts and / or wires are used. Such soldering is also used as a means for sealing and / or repairing aluminum heat exchangers.
The use of tin solder solves the problem of small contact with aluminum without the use of aggressive chemical flow or when the chemical flow for aluminum is not compatible with metals on the opposite side of the joint. Additionally, in many electronic packages, soldering of aluminum is limited to using anti-corrosion fluxes that contain tin.
Supplier — AvekGlob Company — offers to purchase tin in a wide range of profiles and technological applications. Products can be bought at a price formed on the basis of European and world standards. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.