Custom screen design should start with process conditions, not catalogue dimensions. Filtration efficiency means retaining target solids at the required flow and pressure drop between cleanings.
A custom filtration screen should match particle distribution, solids loading, cleaning method, load, and equipment geometry.
Wedge Wire Screen Structure, Separation, and Flow Control
An industrial filtration screen must separate solids without wasting flow area. A wedge wire screen welds V-shaped profile wires to support rods, creating continuous slots in flat, curved, cylindrical, drum, basket, and nozzle forms.
V-Wire Slots, Support Rods, and Anti-Clogging Function
The slot is narrowest at the surface and widens downstream. Particles that pass the entrance gain clearance instead of wedging inside. This reduces blinding, keeps more slots open, and improves backwashing or scraper cleaning.
Support spacing must prevent wire deflection under differential pressure without blocking excessive area, preserving slot accuracy and throughput.
Slot Size, Open Area, and Filtration Efficiency
Slot size sets the separation cut point. Too small traps excess fines and raises differential pressure; too large lets unwanted solids through. Good filter screen design uses particle-size distribution and the retention target to balance these losses.
Slot Range, Tolerance, and Open Area Calculation
Jingzhou Metal custom wedge wire screen options cover 0.02-5 mm slots, 25-1200 mm widths, and standard lengths up to 6000 mm. Profile wire ranges from 0.5 × 1.0 to 5 × 10 mm, with tolerance down to ±0.01 mm. Finished slot tolerance is separate because welding affects the opening.
For a parallel slot surface:
Open area (%) ≈ slot ÷ (slot + profile wire width) × 100
| Screen Design Parameter | Effect on Performance |
| Slot size | Sets retention cut point |
| Open area | Controls hydraulic capacity |
| Effective filtration area | Defines usable flow area |
| Support rod spacing | Limits deflection and blockage |
| Slot opening tolerance | Prevents bypass and choke points |
A 0.50 mm slot with 2.20 mm surface wire gives about 18.5% nominal open area; a 1.00 mm slot gives about 31.3%. More open area lowers face velocity, reducing local pressure loss and buildup. Supports, frames, and weld zones make effective open area lower than the nominal value.
Customizing Screen Structure, Material, and Flow Direction
Wedge wire screen design should match load direction, abrasion, corrosion, cleaning method, and installation geometry. Custom dimensions also reduce dead area and local flow concentration.
Material Selection and Flow Direction by Service Condition
SS304/304L suit many general services; SS316/316L offer stronger corrosion resistance. SS321, duplex stainless steel, and Hastelloy support harsher conditions. Suitable material preserves slot size; corrosion or wear can enlarge openings and increase fouling or bypass.
Cylindrical baskets can use outside-to-inside or inside-to-outside flow. The correct direction puts retained solids where they can be scraped or backwashed. Mining screens may need heavier profiles; water treatment often prioritizes open area, pressure drop, and media retention.
Manufacturing Precision and Wedge Wire Screen Performance
A custom design works only if production reproduces the specified geometry. Oversized local slots become bypass paths; undersized slots carry more resistance and foul first. Uniform slots spread flow more evenly.
Profile Wire Forming, Dimensional Control, and Inspection
Jingzhou Metal uses cold drawing, annealing, shaped rolling, a second annealing stage, and fine drawing. Fine drawing controls final profile dimensions before welding, supporting repeatable slot geometry.
Infrared monitoring checks coil variation; 1D/2D projectors verify dimensions; spectrometric analysis confirms alloy grade; tensile testing checks mechanical performance. Welding pitch and support position must also be controlled.
Custom Wedge Wire Screen RFQ Requirements
A useful RFQ should state medium, solids content, particle range, retention target, flow rate, allowable pressure drop, temperature, cleaning method, load, geometry, material, and inspection requirements. State effective filtration area separately from overall dimensions.
Required Process, Hydraulic, Screen, Material, and QC Data
| Custom Screen RFQ Item | Required Data |
| Process | Medium, solids content, temperature |
| Separation | Particle range, retention |
| Hydraulic | Flow rate, allowable pressure drop |
| Screen | Slot, profile, supports, dimensions |
| Material | Corrosion and wear conditions |
| QC | Filtration screen inspection, dimensional report |
Jingzhou Metal: Custom Profile Development to Screen Production
7-15 Day R&D and 1,200-Ton Monthly Profile-Wire Capacity
Jingzhou Metal develops custom profiles from drawings with a 7-15 day R&D cycle. Linking profile development, tooling, wire production, welding, and inspection allows slot and support geometry to be adjusted before volume production.
Profile-wire capacity is about 1,200 tons per month.
FAQ
Q1: Can an Existing Screen Be Copied Without the Original Drawing?
A: A sample can establish slot, profile, support spacing, and dimensions, but process data are still needed because solids loading and flow affect performance.
Q2: When Is a Pilot Screen Worth Testing?
A: Use pilot testing for irregular solids, high abrasion, uncertain fouling, or costly downtime. It can confirm retention and cleaning interval.
Q3: Can a Thicker Screen Always Increase Service Life?
A: No. Extra metal may reduce open area. Service life also depends on support spacing, fatigue, abrasion, mounting stress, material grade, and cleaning forces.
Q4: What Should Be Monitored After Installation?
A: Track throughput, differential pressure, retained-solids quality, cleaning frequency, deformation, and wear. A slower pressure rise indicates more usable area.
Q5: Should Every Project Specify the Tightest Possible Tolerance?
A: No. Match slot tolerance to separation risk. Tight control is useful when oversized slots would cause product loss or media escape.