The surface treatment of high efficiency filters is not valued, indicating that the purpose of the treatment is to remove dust, dirt, grease, and specialized chemical cleaning for the bonded surfaces. One of the purposes of surface treatment is to clean the surface to be adhered, to remove dust, oil, rust, residue, molding sand, oxide scale, paint film, wax, release agent, solder spot, solvent, moisture, etc. on the surface to be bonded.
High efficiency filter surface treatment method
1. Surface cleaning
2. Degreasing and degreasing
3. Rust removal roughening
4. Clean and dry
5. Chemical treatment
6. Protection and treatment
High-efficiency filters are rarely used in the latter two methods during the manufacturing process, but others can be combined in one, two or several ways, with surface cleaning being an indispensable method.
Any object will have a layer of foreign matter such as oxides, hydroxides, lubricating oils, rust preventive oils, mold release agents, dust, etc., which will prevent the adhesive from wetting the surface to be adhered and need to be properly treated. In the high-efficiency filter, the outer frame of many products is metal frame such as galvanized plate, stainless steel plate, aluminum alloy, aluminum plate, etc. These metal frames are exposed to the air and generally absorb certain moisture and dust. These contaminant layers and oxide films with low cohesive strength and low surface energy will reduce the bond strength. Before gluing, the metal surface must be properly treated to ensure that the surface is free of dust, moisture, and oil. The method used can be cleaned or degreased according to the actual condition of the metal frame.
In addition to the surface cleaning of the high-efficiency filter, the adhesion can be increased. In the high-efficiency filter, the material selection of some sprayed surfaces is mainly involved. Choosing the right spray material and spray surface not only makes the glue easier, but also reduces the cost of sticking. Nowadays, the high-efficiency filter industry is fiercely competitive. The price is a common concern. To reduce the cost of high-efficiency filters, we must proceed from the overall situation and consider the choice of various materials in order to ensure both product quality and cost. It is not correct to pay attention to one aspect.