20-inch PP Wire-Wound Filter Cartridge: Chemical Plating Solution, Anodizing Solution, and Electrophoretic Paint Filter Cartridge
Product Introduction
This 20-inch PP Wire-Wound Filter Cartridge is a specialized high-performance filtration component custom-engineered for the purification of chemical plating solution, anodizing solution and electrophoretic paint in surface treatment industries, manufactured with high-purity industrial-grade polypropylene (PP) wire as the core raw material and advanced precision spiral winding technology with calibrated layer density. Tailored to the unique physicochemical characteristics of surface treatment working fluids and their strict cleanliness requirements, the standardized 20-inch structural design perfectly matches the mainstream filter housings and filtration units in surface treatment production lines, serving as a key purification barrier in the circulation and reuse system of chemical plating, anodizing and electrophoretic coating solutions. The all-PP integral structure features excellent chemical compatibility, resisting corrosion from acidic, alkaline and organic components in the working fluids without dissolution, material shedding or secondary pollution. It efficiently removes insoluble particulate impurities in the solutions, maintains the stable performance and cleanliness of surface treatment fluids, prevents impurity-induced defects such as uneven coating, pinholes and surface spots on workpieces, and extends the service life of production equipment while improving the reuse rate of the working fluids.
Filtration Precision
The 20-inch PP Wire-Wound Filter Cartridge offers a flexible range of filtration precision options optimized for the impurity removal demands of chemical plating solution, anodizing solution and electrophoretic paint, with standard grades covering 1 μm to 100 μm. The most commonly used specifications include 5 μm, 10 μm, 20 μm and 50 μm, which can be targeted to intercept different particle size insoluble impurities in various surface treatment fluids. Adopting a uniform and dense spiral winding process, the filter layer has a highly consistent pore size distribution without pinhole defects, thoroughly removing metal debris, abrasive powder, colloidal precipitates, resin particles and paint slag generated during surface treatment production from the circulating solutions. This stable and precise filtration performance ensures that the chemical plating, anodizing and electrophoretic paint solutions entering the production process meet the strict cleanliness standards of surface treatment, fundamentally eliminating workpiece quality defects caused by particulate impurities.
Flux
Benefiting from the optimized 20-inch structural design, scientific spiral winding layout and high-permeability industrial-grade PP raw material, this filter cartridge exhibits excellent and stable flux performance under the working condition of continuous circulation filtration of surface treatment fluids. Under the standard operating conditions of 25℃ and 0.2MPa inlet pressure, the initial pure water flux of a single 20-inch cartridge reaches 75-135 L/m²·h, and the actual stable working flux for the purification of chemical plating solution, anodizing solution and electrophoretic paint remains at 55-95 L/m²·h for a long time. Even in the continuous circulation of high-viscosity electrophoretic paint or high-concentration chemical plating solution, the flux attenuation rate is extremely low, which can ensure the unobstructed circulation and continuous supply of surface treatment working fluids, and avoid the reduction of production efficiency caused by insufficient filtration flux in the surface treatment production line.
Salt Rejection Rate
As a dedicated liquid purification component for the filtration of chemical plating solution, anodizing solution and electrophoretic paint, this 20-inch PP Wire-Wound Filter Cartridge is designed for the efficient interception of insoluble particulate impurities and macromolecular colloids in surface treatment fluids, and does not have the ion separation and rejection function of reverse osmosis, nanofiltration and other desalination membrane components. Its salt rejection rate is 0%, which means it only retains insoluble solid impurities in the working fluids while allowing all soluble metal ions, chemical reagents, anodizing active ingredients, electrophoretic paint resin molecules and solvent molecules to pass through the filter layer smoothly. This characteristic is fully in line with the core demand of surface treatment fluid purification, which only needs to remove particulate impurities without changing the ion concentration, chemical composition and performance of the chemical plating, anodizing and electrophoretic paint solutions, effectively maintaining the stable working performance of the fluids during circulation and reuse.
Pressure Drop
The product is specially designed with a low-pressure drop optimization structure for the circulation filtration of chemical plating solution, anodizing solution and electrophoretic paint, fully considering the pressure loss control requirements of surface treatment production line circulation systems. Under the rated working flux and standard temperature conditions, the initial pressure drop of a single 20-inch filter cartridge is only 0.01-0.04 MPa, which minimizes the liquid flow resistance in the filtration link of surface treatment working fluids and effectively reduces the energy consumption of the solution circulation pump in the production line. During long-term continuous use, due to the uniform pore size distribution and high impurity-holding capacity of the PP wire-wound filter layer, the pressure drop of the cartridge rises slowly and linearly; the maximum allowable operating pressure drop is 0.15 MPa. When the system pressure drop reaches this value, replacement is recommended in a timely manner to ensure the normal operating pressure of the entire surface treatment fluid circulation system, and avoid the impact of excessive pressure loss on the solution circulation efficiency and surface treatment process effect.
Molecular Weight Cutoff (MWCO)
This 20-inch PP Wire-Wound Filter Cartridge has a precise molecular weight cutoff range of 80,000 to 300,000 Daltons, which is specially calibrated for the purification demand of chemical plating solution, anodizing solution and electrophoretic paint. It can effectively intercept macromolecular substances in the surface treatment fluids such as colloidal precipitates, macromolecular organic impurities, paint resin agglomerates, metal hydroxide flocs and polymer additive aggregates that may cause workpiece surface defects and block production nozzles. The strict and reasonable MWCO control ensures that small molecular weight soluble ions, chemical plating complexing agents, anodizing additives and small molecular weight electrophoretic paint components pass through the filter layer smoothly while realizing the efficient interception of all harmful macromolecular insoluble impurities, and provides reliable molecular-level purification protection for the chemical plating, anodizing and electrophoretic paint solution circulation system.
Membrane Thickness
The PP wire-wound filter layer of this 20-inch cartridge adopts a multi-layer composite spiral winding design with a uniform total effective filter layer thickness of 120-200 μm, and the single PP wire diameter is precisely controlled to 0.15-0.3 mm to ensure the consistency of the filter layer pore size and filtration precision. The inner and outer sides of the filter layer are equipped with high-strength industrial-grade PP mesh protective layers with a thickness of 80-100 μm each, and the inner skeleton is a reinforced 20-inch special PP support structure with high rigidity and excellent chemical compatibility. The moderate and uniform filter layer thickness design not only ensures the high filtration precision and sufficient mechanical strength of the filter cartridge, but also effectively resists the liquid flow impact and pressure fluctuation in the chemical plating, anodizing and electrophoretic paint solution circulation system. The high-quality PP raw material and precise winding process ensure that the filter layer has no material shedding, dissolution or deformation in various surface treatment fluids for a long time, avoiding secondary pollution to the working fluids and meeting the strict purification requirements of surface treatment production.
Replacement Cycle
Under the normal operating conditions of surface treatment fluid circulation systems (solution impurity content ≤30 mg/L, 24-hour continuous circulation filtration, regular simple backwashing with pure water or dedicated cleaning fluid), the recommended replacement cycle of this 20-inch PP Wire-Wound Filter Cartridge is 3-6 months. If the surface treatment production load is high (such as mass production of high-precision workpieces) or the solution impurity content exceeds 30 mg/L due to excessive workpiece polishing, machining dust or paint slag generation, the replacement cycle should be appropriately shortened to 1-3 months. In addition, when the pressure drop of the chemical plating, anodizing or electrophoretic paint solution circulation system reaches the maximum allowable value of 0.15 MPa, or the filtration flux decreases significantly and cannot be restored after backwashing, the filter cartridge should be replaced immediately to ensure the purification effect of the working fluids and avoid the occurrence of workpiece surface defects caused by excessive impurities in the solutions.
Features
- Standardized 20-inch design: Conforms to the universal installation standard of surface treatment production line filter housings and filtration units, perfect matching, easy to assemble and replace, and high interchangeability with conventional filter cartridges.
- Excellent chemical compatibility: All-PP industrial-grade raw material, resistant to corrosion from acidic, alkaline, organic and high-concentration components in chemical plating solution, anodizing solution and electrophoretic paint, no dissolution or secondary pollution.
- Flexible filtration precision: 1-100 μm multi-specification precision options, adaptable to the purification requirements of different types of chemical plating, anodizing and electrophoretic coating processes and their corresponding working fluids.
- Low pressure drop & energy saving: Optimized spiral winding structure and reasonable layer density, minimal initial pressure drop and slow pressure rise, reducing the energy consumption of the solution circulation pump and improving the overall energy efficiency of the surface treatment production line.
- Stable high flux performance: High-permeability PP wire material, low flux attenuation rate in various surface treatment fluids, ensuring continuous and stable filtration flux and meeting the demand of mass production in surface treatment workshops.
- Superior mechanical strength: Reinforced 20-inch special PP inner skeleton and high-density protective mesh, resistant to solution flow impact and pressure fluctuation, no deformation or damage under 24-hour continuous operation conditions.
- High impurity-holding capacity: Multi-layer composite wire-wound filter layer, large effective impurity interception area, can adsorb a large amount of metal debris, paint slag and colloidal precipitates, extending the service life under normal working conditions.
- No material shedding: Precision winding process and high-quality PP raw material, no fiber, plastic or other debris shedding into the working fluids, ensuring the absolute cleanliness of chemical plating, anodizing and electrophoretic paint solutions.
- Cost-effective: Low manufacturing cost, long replacement cycle under normal conditions, and simple maintenance, effectively reducing the filtration and purification cost of surface treatment production lines.
Application Fields
This 20-inch PP Wire-Wound Filter Cartridge is a dedicated liquid purification component for chemical plating solution, anodizing solution and electrophoretic paint, and is widely used in various surface treatment industries involving chemical plating, anodizing and electrophoretic coating processes, covering hardware, auto parts, aluminum profiles, electronic components, household appliances and aerospace part production. In the chemical plating field, it is applied to the circulation purification of nickel, copper, gold and silver chemical plating solutions, removing metal debris and colloidal precipitates to ensure the uniformity and compactness of the chemical plating layer on workpiece surfaces. In the anodizing field, it is used for the purification of aluminum and aluminum alloy anodizing solutions (sulfuric acid, oxalic acid and chromic acid systems), intercepting abrasive powder and metal hydroxide flocs to realize the formation of a uniform and smooth anodic oxide film on workpiece surfaces. In the electrophoretic coating field, it is dedicated to the circulation filtration of cationic and anionic electrophoretic paint solutions, removing paint slag, resin agglomerates and particulate impurities to prevent surface spots and pinholes on electrophoretic coating workpieces. It is suitable for small and medium-sized surface treatment workshops, large-scale automated production lines and mobile filtration units, and can also be used for the filtration and purification of auxiliary fluids such as surface treatment pre-treatment cleaning solution and post-treatment sealing solution with similar impurity characteristics.
Conclusion
To sum up, this 20-inch PP Wire-Wound Filter Cartridge is a high-performance, high-compatibility professional filtration component custom-developed for the purification of chemical plating solution, anodizing solution and electrophoretic paint in surface treatment industries, perfectly meeting the physicochemical characteristics of various surface treatment working fluids and the strict cleanliness requirements of production processes. Its core advantages of standardized 20-inch design, excellent chemical compatibility, flexible filtration precision, low pressure drop, stable flux and no material shedding perfectly solve the pain points of working fluid pollution, workpiece surface defects, low fluid reuse rate and high energy consumption in the surface treatment production process. The all-PP structural design ensures no secondary pollution to the chemical plating, anodizing and electrophoretic paint solutions, effectively maintains the stable chemical properties and absolute cleanliness of the working fluids, and fundamentally eliminates quality defects such as uneven coating, pinholes and surface spots caused by particulate impurities. As the core purification barrier of surface treatment fluid circulation systems, it not only improves the yield and surface quality of workpieces, but also extends the service life of solution circulation pumps, nozzles and other production equipment, increases the reuse rate of expensive chemical plating and electrophoretic paint solutions, and effectively cuts down the raw material and maintenance costs of surface treatment enterprises. With the characteristics of perfect matching, easy installation, flexible precision selection and high cost performance, it has become an indispensable core filtration component for the chemical plating, anodizing and electrophoretic coating production lines in the surface treatment industry, providing a stable, efficient and reliable liquid purification solution for the high-quality, high-efficiency and low-cost production of surface treatment enterprises.
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