1, aluminum decorative panel
The material of the aluminum honeycomb panel decorative panel is generally selected from 3003, 5005, etc., and the 1100 sheet with low alloy composition is less used. The decorative surface is sprayed or rolled, the coating is polyester or fluorocarbon paint, the outer wall is preferably sprayed, and the three coats are required, the thickness of the paint layer is ≥40μm, so as to ensure the durability of the coating.
The aluminum plate is subjected to a strict surface anodizing treatment before painting to ensure sufficient coating adhesion and bonding strength with the honeycomb core. The panel coating should meet the requirements of the national standard YS/T429.2-2000.
2, aluminum back plate
The aluminum honeycomb back plate should be made of the same material as the panel. The surface should be anodized. The exposed side should be coated with protective coating. The coating material can be polyester, epoxy or acrylic. Long-term exposure to air causes corrosion of aluminum sheets.
3, aluminum honeycomb core material
The aluminum honeycomb core material is manufactured by aluminum foil and special honeycomb node glue on the aluminum honeycomb core production line. The factors affecting the performance of the honeycomb core material mainly include parameters such as aluminum foil, noodle glue and honeycomb core specifications.
3.1 Aluminum foil
Aluminum foil should be selected 3003 grade, the processing should be strictly surface treatment, in the products with high requirements on strength or durability, the honeycomb core material processed by 1100 pure aluminum foil should be used with caution.
3.2 Gum glue
The epoxy resin should be epoxy modified high temperature curing adhesive, which not only provides sufficient bonding strength but also has excellent environmental resistance and high and low temperature resistance. Common adhesives tend to degumm the honeycomb core due to low strength, resulting in overall failure and instability.
The node strength of the honeycomb core is the main basis for evaluating its performance, and its node strength data should be ≥2.0N/mm.
(See the Aviation Industry Standard HB5443-90 of the Ministry of Aeronautics and Astronautics of the People's Republic of China for the Specification of Durable Aluminum Honeycomb Core Materials for Sandwich Structures)
3.3 Honeycomb core specifications
The aluminum honeycomb core specification is determined by the thickness of the aluminum foil and the size of the honeycomb cell. The aluminum honeycombs of different specifications have different densities and different mechanical properties, and the manufacturing cost thereof also has a large difference.
Honeycomb core specifications can be expressed in terms of honeycomb inscribed circle diameter (imperial units) and aluminum foil thickness/pore length (metric units). The national standard in China is expressed in terms of aluminum foil thickness/pore length.
Reversed Dutch Weave Wire Mesh
Reversed Dutch Weave Wire Mesh,Expanded Metal Mesh,Welded Wire Mesh ,Crimped Wire Mesh
Stainless Steel Wire Mesh,Copper Wire Mesh Co., Lt d , http://www.nbfilterseries.com