If you want to produce a good series of aluminum box products, you need to apply a variety of advanced technologies to complete. For example, aluminum alloy processing technology, cutting technology, etc., but the welding technology used in the production process plays a decisive role in the quality of the aluminum box produced.Welding technology generally involves the preparation before welding, the selection of welding wire and the characteristics of the products to be welded, etc., which need to be considered.Preparation before welding:
Use mechanical or chemical methods to strictly clean the surface oxide film on both sides of the weld groove.For mechanical cleaning, electric or pneumatic milling cutters can be used. For thinner oxide films, copper wire brushes can also be used to remove oxide films.Welding is performed immediately after cleaning. If it is left for more than 4 hours, it should be cleaned again.
Select welding wire:
Generally choose 301 pure aluminum welding wire and 311 aluminum silicon welding wire.
The characteristics of welding products:1. Features of aluminum and aluminum alloy materials in aluminum boxesAluminum is a silver-white light metal with good plasticity, high electrical and thermal conductivity, and also has the ability to resist oxidation and corrosion. Aluminum is very easy to oxidize, and it is easy to produce inclusions in the weld, thereby destroying the continuity and uniformity of the metal, reducing its mechanical properties and corrosion resistance.
2. Difficulties in welding aluminum and aluminum alloy materials in aluminum boxesIn the air, aluminum is easily combined with oxidation to form a dense aluminum oxide film with a high melting point, far exceeding the melting point of aluminum and aluminum alloys. The density of alumina is 3.95-4.10g/cm3, which is about 1.4 times that of aluminum. The surface of the alumina film is easy to absorb moisture. When welding, it hinders the fusion of basic metals, and easily forms defects such as pores, slag inclusion, and lack of fusion, which cause the performance of the weld to decrease.
KASSICO, a leading aluminum box factory in Ningbo, China, Have 19 years OEM & ODM experience in manufacturing aluminum camping & outdoor boxes, truck tool boxes, aluminum camping kitchen box, aluminum baskets, military & defense cases, aluminum transportation boxes, and attache cases for industrial, chemical, medical, education etc. Our company owns 15000m2 factory area and more than 200 sets of advanced manufacturing equipments, Perfect and rigorous QC system, also passed the ISO9001: 2015, BSCI, IAF quality management system certification.
More Details: www.kassicobox.com
