Epoxy coated wire mesh

Epoxy resin coated wire mesh (or epoxy powder coated metal filter) is a functional composite material that combines the strength of metal skeleton with the excellent corrosion resistance of epoxy resin. Low carbon steel wire (such as Q195, Q235) or stainless steel wire (such as 304, 316L) is used as raw material, and a wire mesh of the required mesh size (aperture) and size is woven by a weaving machine. The oil and grease on the surface of the wire mesh are thoroughly removed (commonly used alkaline cleaning agents or solvents), and the epoxy resin powder is atomized and charged by an electrostatic spray gun. The negatively charged powder particles are adsorbed to the grounded (positive) wire mesh surface to form a uniform covering layer. This process is efficient, environmentally friendly (no solvent volatilization), and can accurately control the coating thickness. The sprayed wire mesh is sent to a drying tunnel or oven. The powder melts, flows and undergoes a cross-linking and curing reaction to form a dense, strong, chemically bonded epoxy resin coating.

Core features of epoxy coated wire mesh (combination of advantages of wire mesh + epoxy coating):

1. Excellent corrosion resistance:

◆ Epoxy coating completely isolates the metal substrate from corrosive media (acid, alkali, salt, solvent, water vapor).

◆Significantly extends the life of low-carbon steel wire mesh, even surpassing the performance of ordinary stainless steel wire mesh in highly corrosive environments.

◆ Stainless steel substrate + epoxy coating provides double protection, suitable for extreme corrosive environments (such as chemical industry, ocean).

2. Excellent wear resistance:

◆The cured epoxy coating has high hardness and good toughness, which can effectively resist material scouring and friction, and extend the service life of the filter.

◆ Good anti-sticking and easy cleaning:

◆The surface of epoxy coating is smooth and dense, and it is not easy to adhere to wet materials, filter cakes or scaling.

◆Easy to clean, reduce clogging, and improve filtration/screening efficiency.

3. Good anti-sticking and easy cleaning:

◆The surface of epoxy coating is smooth  and dense, and it is not easy to adhere to wet materials, filter cakes or scaling.

◆Easy to clean, reduce clogging, and improve filtration/screening efficiency.

4. Enhanced mechanical strength:

◆The wire mesh provides core support, pressure resistance and deformation resistance.

◆The coating fills the mesh edges, reduces stress concentration, and makes the overall structure more durable.

5. Controllable pore size and surface properties:

◆By selecting base meshes with different mesh sizes and coating thicknesses, the final effective filtration pore size can be precisely controlled.

◆The coating can be adjusted to different surface energies (hydrophobic/hydrophilic) or colors as needed.

               Epoxy Resin Mesh Rolls                                      Epoxy resin coated wire mesh                      Epoxy resin coated wire mesh  Cut into pieces

The main uses of epoxy resin coated metal wire mesh (concentrated in the fields of industrial filtration, screening and protection)

The core value of this composite wire mesh lies in solving the three major problems of corrosion, wear and blockage. Typical applications include:

1. Filtration and screening in highly corrosive environments:

Chemical industry: Filtration of acids, alkalis, organic solvents, and corrosive slurries (such as titanium dioxide and pesticide intermediates).

Electroplating and surface treatment: Filtration of electroplating liquid, pickling liquid, and phosphating liquid.

Environmental water treatment: Filtration of corrosive media in sewage treatment plants (such as sulfur-containing and chlorine-containing wastewater), and pretreatment of seawater filtration.

Mining and metallurgy: slurry filtration, leachate filtration, and corrosive gas dust removal filters.

2. Screening of highly abrasive materials:

Gravel aggregate grading: wear-resistant and anti-corrosion, used for vibrating screening of crushed stone, sand, quartz sand, etc.

Coal sorting: wear-resistant and anti-rust, used for coal washing and coal sorting screens.

Refractory materials/ceramic powders: Screening of highly abrasive raw materials.

3. Occasions with high requirements for anti-sticking and easy cleaning:

Food and pharmaceutical (non-direct contact): Drying and screening of powders that are easy to absorb moisture and agglomerate (such as sugar, salt, starch, and drug powder), which must comply with relevant hygiene standards.

Plastic and rubber industry: Screening of polymer particles and recycled materials, anti-sticking and anti-static.

Battery material production: Screening of positive and negative electrode materials (such as lithium cobalt oxide and graphite).

4. Protection and support:

Anti-corrosion grilles/platforms: Used in corrosive environments such as chemical workshops and offshore platforms.

Building reinforcement mesh: Used as anti-corrosion reinforcement bars in concrete (special design required).

Gas diffusion/uniform flow layer: Provide uniform airflow in chemical towers and environmental protection equipment.

Epoxy coated wire mesh Specification:

Available in rolls (big lengths also available) or cut in stripes.

Important applications of epoxy coated wire mesh in the production of hydraulic filter elements

1. Filter element skeleton/support mesh:

Function: Replace the traditional punched metal cylinder or ordinary metal woven mesh as the internal or external support skeleton of the filter material (such as glass fiber filter paper, metal fiber felt, synthetic fiber felt).

Advantages: The coating provides excellent oil resistance, water resistance, and chemical corrosion resistance, preventing the support skeleton from rusting and peeling after long-term immersion in hydraulic oil (especially containing water, additives or acidic substances produced after oxidation), avoiding secondary pollution (rust residue), and enhancing the overall structural strength and anti-crushing ability.

2. Main filter layer (metal mesh filter element):

Function: Directly stack, wind or sinter multiple layers of epoxy coated metal mesh with different mesh sizes to make a filter element as the core filter medium.

Advantages: Suitable for occasions that require high precision, high rigidity, and can be repeatedly cleaned and regenerated (such as high-pressure pipeline filtration, return oil filtration). The coating can significantly improve the corrosion resistance and wear resistance of the metal mesh itself.

3. End cover connector/center tube sealing surface:

Function: Used for the joint or sealing surface between the end cover and the center tube of the filter element.

Advantages: The coating provides good sealing and corrosion resistance, preventing leakage or strength loss due to corrosion at the joint.

4. Coarse filter/protective layer:

Function: Wrap a coarse epoxy-coated metal mesh on the outer layer of the precision filter material (such as filter paper).

Advantages: Pre-intercept large particle pollutants, protect the internal fine filter layer from being blocked or punctured prematurely, and extend the life of the fine filter element. The wear resistance of the coating makes it more durable under high-pressure oil flushing.

      Epoxy resin mesh filter element                           Epoxy resin mesh filter element                     Epoxy resin mesh filter element

Types of hydraulic systems suitable for epoxy coated wire mesh

This high-performance filter element is particularly suitable for hydraulic systems with extremely high requirements for reliability, durability, and oil cleanliness:

1. High-pressure hydraulic system: such as construction machinery (excavators, cranes), injection molding machines, and hydraulic punches, the working pressure is often > 20MPa.

2. Key equipment systems: aerospace, ship steering gear, wind power variable pitch system, nuclear power equipment hydraulic system, the consequences of failure are serious.

3. Harsh environment systems: offshore platforms (high salt spray), mining machinery (high dust, high humidity), metallurgical equipment (high temperature, high pollution).

4. Long-cycle maintenance system: scenarios where the filter element needs to have an ultra-long service life and reduce the maintenance frequency.

Epoxy resin coated wire mesh is one of the ideal materials for manufacturing high-performance, long-life, and high-reliability hydraulic filter elements. It uses epoxy coating to give the metal filter top-level oil corrosion resistance, excellent wear and scouring resistance, excellent anti-sticking and anti-blocking properties, and enhanced structural strength, which perfectly solves the problem of filter element failure caused by corrosion, wear, and blockage in hydraulic systems. Especially in hydraulic systems with high pressure, heavy load, harsh environment, or sensitive maintenance cycles, the use of such filter elements can significantly improve the system's cleanliness guarantee capability, extend component life, and reduce overall operation and maintenance costs. Dashang Wire Mesh specializes in the production and sales of epoxy coated metal wire mesh, with an annual supply capacity of 3,600 tons. If you are interested in the product, please contact us at sales@dswirecloth.com