Overview

Titanium mesh etching uses photochemical machining to cut precise apertures and strand patterns into thin titanium sheet without applying mechanical force or a stamping die. A photoresist mask is exposed with the mesh artwork, developed, and the unprotected metal is dissolved in a chemistry matched to titanium, so hole shape, hole size and strand width are set by the artwork and etch time rather than by tool pressure. Typical substrates are commercially pure titanium Grade 1/2 and Ti-6Al-4V, supplied between 0.05 mm and 0.5 mm. Because the process is chemical, the mesh leaves the line flat, burr-free and free of the rolled edges, tool wear and heat tint that come with punching or laser cutting thin reactive foil.

For buyers, titanium mesh etching solves three recurring problems. Titanium is hard and springy, so stamping thin foil tends to curl, tear and wear dies quickly; fuel-cell, electrolyzer and medical screens demand uniform holes and high open area that are hard to hold at 0.1 mm scale; and titanium is heat-sensitive, so laser dross and discoloration can spoil later welding or coating. Chemical machining forms every aperture on a sheet at the same rate, holding hole size and strand width consistent from the first sample through volume production, while keeping the passive oxide that gives titanium its corrosion resistance.

Parameter Window

• Available Materials: CP titanium Gr1/Gr2, Ti-6Al-4V (Grade 5); also 316L stainless, copper and nickel for mixed builds
• Material Thickness Range: 0.05–0.5 mm
• Tolerance: ±0.02 mm on aperture size, ±0.03 mm on strand width
• Minimum Feature: 0.10 mm hole diameter, 0.08 mm strand/line width
• Surface Options: acid pickling & passivation, anodized color coding, electropolishing, light sandblast, ultrasonic cleaning
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Artwork & Nesting — Convert the hole array to vector art, check the hole-to-thickness ratio, and plan sheet layout with shared registration marks.
2. Material Certification & Prep — Verify grade, mill certificate and thickness, inspect for scratches and flatness, then shear to exposure size.
3. Cleaning & Lamination — Degrease and laminate dry film resist under matched heat and pressure so no bubbles sit under fine strands.
4. UV Exposure — Expose through high-resolution film with the array registered to the sheet edge for panel-level aperture consistency.
5. Development — Wash out unexposed resist to open the hole areas, and inspect for under-developed residue that would block etching.
6. Controlled Etching — Spray titanium-matched chemistry, tuning time, temperature and conveyor speed to hold sidewalls and avoid strand thinning.
7. Stripping & Passivation — Remove resist, neutralize, then pickle/passivate or anodize to restore the protective oxide and strip free iron.
8. Inspection & Packaging — Measure aperture, strand width and open area on a vision system, verify flatness, then pack on liner or in clean trays.

Core Advantages

1. Burr-free open area: Chemical removal leaves no rolled edge or burr, so flow resistance stays stable and no particles shed into the media.
2. No die cost: Each new mesh pattern is a new film, keeping prototypes and frequent revisions economical without a stamping tool.
3. Long corrosion life: Titanium resists pitting in chlorides, acids and seawater, suiting chemical filtration and long-life electrolyzer duty.
4. Repeatable fine holes: 0.10 mm holes and 0.08 mm strands form together across a sheet, with tight aperture spread and uniform open area.
5. Stress-free flatness: With no shear or heat input, thin foil stays flat and stress-free, so welding, plating or laminating will not warp it.
6. Lightweight strength: titanium mesh etching yields a net roughly 40% lighter than stainless at equal strength, a real gain for aerospace and implants.

Typical Applications

• Chemical filtration: Corrosive-media filter and support screens in Gr2 pure titanium that resist acids and alkalis without fouling.
• Fuel-cell flow fields: Bipolar-plate and gas-diffusion flow meshes where uniform apertures keep reactant gas distribution even.
• Medical implant screens: Bone-ingrowth meshes for orthopedic and dental implants that exploit titanium's biocompatibility.
• Electrolyzer electrodes: Electrode substrate meshes for chlor-alkali and water electrolysis that withstand anodic conditions.
• Aerospace lightweight screens: Ventilation, EMI shielding and lightweight partitions for airborne equipment where mass matters.
• Acoustic dust meshes: Microphone and sensor guards in thin titanium foil that balance sound transmission, dust blocking and corrosion resistance.

Design Notes & Process Considerations

1. Hole-to-thickness ratio: Keep hole diameter at or above material thickness; too small a hole distorts from undercut and thins the strand.
2. Open-area callout: State hole diameter, pitch and open-area percentage, and define round, square or hex arrays rather than only a mesh count.
3. Grade selection: Choose Gr1/Gr2 for formability and corrosion, or Ti-6Al-4V for strength, and note the material standard and certificate needs.
4. Nesting and tie bars: Leave enough tie bars and process borders, and specify the final cut method so thin webs survive stripping and cleaning.
5. Thin-foil handling: For foil below 0.1 mm, specify a carrier or liner and call out flatness and cleanliness to avoid creases and fingerprints.
6. Surface and cleanliness: With titanium mesh etching, define passivation, anodize color and residual-ion limits, especially for medical and battery parts.