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What is Zamak and Brazing Alloy about?

What about Zamak?

Zamak 3 is a series of zinc-based metals incorporating aluminum, magnesium, and copper as alloying components. It is widely used in Zinc die casting, providing an excellent combination of strength, ductility. It also offers excellent filtering and finishing features. Zamak 12 offers high pulling power; Zamak 13 provides high impact resistance and corrosion resistance; Zamak 15 is a high-quality zinc alloy with many advantages: compared to zamak 12 in terms of durability and zamak 13 in terms of corrosion resistance and tensile strength.

ZAMAK is a type of zinc alloy that contains aluminum, magnesium, copper, and zinc. This hybrid family contains copper but is labeled K. This is because the abbreviation ZAMAK uses German spelling: Zink, Magnesium, Aluminum, and Kupfer.

This oxide layer is very strong and has a melting point of more than 2000 ° C, which is more than three times that of aluminum. It should therefore be removed to allow welding, but it is difficult to do.

What about Brazing Alloy?

Brazing Alloy is a metal-binding process in which the filling metal is heated over the melting point and distributed between two or more closing parts through the capillary operation. Typically, braze alloys are made of 3 or more alloys to form an alloy with the required properties. The basic materials for divination include aluminum, copper, gold, nickel, silver, and iron. The basic filling metals used in brass include aluminum, cobalt, copper, gold, nickel, or silver. These basic filling materials are often combined with other components to obtain the desired properties and performance. It is possible to design strong brazed joints; however, this usually involves a design that expands the wet area so that a large area of ​​copper is involved in the joint. It is unlikely that this will happen or will happen here.

A mixture of brazing made of alloy components is usually silver, copper, manganese, nickel, and/or chromium. The mixture of Pd-Ag is used to brush stainless steel, Inconel, and other heat-resistant alloys. Brazing is defined by the International Welders Society (AWS) as a technique that involves filler filling with liquidus over 450 degrees Celsius (842 degrees Fahrenheit). Soldering, on the other hand, consists of fillings containing liquids with liquidus of 450 ° C or less. Brazing beats loudly when welding when joining different metals. As long as the filling material is compliant with both basic metals and melts at low temperatures, brazing can form strong joints with no alteration of the base metal structures.

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