Precision Grating Mesh
- Electronics
- Healthcare
- Chemical Industry
- Aerospace

As core components in fields such as optics, electronics, and sensors, the machining precision of precision grating plates directly affects equipment performance. Thanks to its unique process characteristics, electroforming has become the mainstream technology for manufacturing high-precision grating plates. This article will systematically analyze the industrial value of electroforming for precision grating plates from three perspectives: technical characteristics, core advantages, and industrial applications.
Technical Characteristics of Electroforming for Precision Grating Plates
1. Ability to Reproduce Structures at the Micrometer to Nanometer Scale
Based on the principle of metal ion electrodeposition, electroforming enables the precise reproduction of micrometer- or even nanometer-scale structures on the surface of conductive substrates. For example, in the field of optical sensors, the electroforming process can produce grating plates with line width accuracy of ±0.5 μm and a period error of less than 0.1 μm, meeting the demands of high-resolution spectral analysis. The key lies in the coordinated control of master mold design and electroplating parameters: the master mold must be fabricated using electron beam lithography or LIGA technology, with dimensional errors less than one-third of the target part’s dimensions; the electrolyte—a nickel aminosulfate solution—is used in conjunction with a current density of 1–10 A/dm² and a temperature range of 40–60°C to ensure a fine-grained, low-stress deposited layer.
2. Integrated Molding of Complex, Non-Circular Structures
Traditional machining struggles to produce non-circular holes, array structures, or gradient gratings. In contrast, the electroforming process—utilizing photolithographic masks and deep-ultraviolet lithography—enables the one-time formation of multi-layer track structures on a single-layer substrate, incorporating coarse, medium, and fine positioning layers. For example, the grating plate of a certain encoder model employs a three-layer electroforming stacking process, each layer corresponding to positioning requirements of different precision levels, significantly enhancing signal immunity to interference and overall reliability. Additionally, the electroforming process supports the manufacture of curved grating plates; through the use of flexible substrates and dynamic electric field control technology, it enables the precise replication of spherical or non-planar gratings.
3. Machining Characteristics Free of Mechanical Stress
Mechanical processing (such as stamping and cutting) tends to create microcracks or residual stress on metal surfaces, leading to a decrease in the strength of the grating. The electroforming process is a non-contact chemical dissolution process that produces no heat-affected zone (HAZ) or mechanical stress, thereby preserving the material’s original elastic properties. Taking 316L stainless steel as an example, the material experiences less than 4% loss in strength after electroforming and passes oxidation resistance tests lasting over 800 hours, making it suitable for long-term use in industrial environments.
4. Wide Range of Compatible Materials
The electroforming process supports a variety of metallic materials, including copper, nickel, iron, gold, silver, and their alloys, and can even process non-metallic materials such as semiconductors and ceramics. For example, in the aerospace sector, electroformed titanium alloy grating sheets have become core components of satellite optical systems due to their high biocompatibility and strong corrosion resistance; in semiconductor manufacturing, ultra-flat stainless steel grating sheets (flatness ≤ 0.02 mm) are used for wafer stage positioning, achieving nanometer-level precision to ensure lithographic alignment accuracy.
5. Ensuring Consistency in Mass Production
The roll-to-roll automated production line achieves a daily production capacity of 3,000 square meters, with sample delivery as fast as 24 hours. Through an AI vision inspection system, key parameters such as aperture size, aperture spacing, and surface roughness of the grating mesh are monitored in real time, increasing product yield from 98.5% to 99.7%. For example, a manufacturer specializing in the electroforming of precision grating screens produced custom filters for new energy vehicle battery modules. These filters feature an open-cell structure and a gradient aperture design, which improve fluid flow efficiency by 30% while meeting IP68 protection rating requirements.
Key Advantages of Electroformed Precision Grating Sheets
1. High Precision and Reliability
Electroformed grating sheets can achieve a resolution of ±0.001° with an angular error of<0.001°. They can directly generate Gray code or multi-turn code without requiring a reference zero position. Their metal structure is more impact-resistant than glass gratings, making them suitable for harsh industrial environments involving vibration, dust, and other adverse conditions. For example, in subway speed measurement systems, vibration-resistant titanium alloy grating sheets (0.03–0.1 mm thick) offer three times the impact resistance, making them suitable for high-frequency vibration environments and ensuring safe train operation.
2. Wear Resistance and Long Service Life
The electroforming process allows for the use of highly wear-resistant materials, such as nickel-cobalt alloys (hardness HV600+), significantly extending the service life of the grating sheets. In industrial robot joint encoders, micro-grating sheets (outer diameter 5 mm) support a repeatability of 0.01° for collaborative robots and have passed a 100,000-cycle endurance test, meeting the demands of long-term, high-load operation.
3. Customization and Flexible Production
Manufacturers specializing in precision electroformed grating sheets typically operate roll-to-roll etching production lines, supporting flexible production ranging from small batches (e.g., 100 sheets) to large-scale production (in the millions). Through an integrated CAD/CAM design system, rapid prototyping within 24 hours is achievable, meeting equipment manufacturers’ time-sensitive requirements for new products. For example, a manufacturer produced custom-etched filter screens for a smart home appliance brand in just 72 hours from design to delivery, helping the client seize a competitive edge in the market.
4. Environmental Protection and Sustainable Development
The electroforming process utilizes a closed-loop etching solution system, achieving a metal ion recovery rate of 90% and reducing waste liquid treatment costs by 55%. Compared to laser processing, electroforming reduces energy consumption per unit area by 40% during mass production and produces none of the harmful gas emissions associated with laser processing, aligning with global environmental trends.
5. Cost-Effectiveness Optimization
The electroforming process eliminates the tooling costs associated with stamping and does not require post-processing steps such as chemical polishing, reducing unit costs by 35%. For small- to medium-volume custom production, its low tooling costs and rapid response capabilities significantly reduce customers’ R&D costs. For example, a manufacturer specializing in the electroforming of precision grating sheets has, through scaled production, reduced the unit price for batch orders by 30%–40% compared to Japanese and American peers, while shortening lead times to 7 days.
Service Capabilities of Precision Grating Sheet Electroforming Manufacturers
1. End-to-End Quality Control System
From raw material inspection to finished product shipment, precision grating electroforming manufacturers ensure product consistency through multiple quality inspection processes. For example, by introducing an AI-powered visual inspection system to monitor key parameters such as aperture size, hole spacing, and surface roughness in real time, product yield has increased from 98.5% to 99.7%. In addition, manufacturers offer reliability verification services such as salt spray testing and high-temperature aging tests to ensure products meet industry standards.
2. Support for Multiple Materials and Complex Structures
Leading manufacturers possess the capability to process a variety of materials, including stainless steel, copper alloys, and titanium alloys, and can realize complex designs such as irregular-shaped apertures, gradient gratings, and multi-layer structures. For example, a manufacturer customized a grating mesh for the winding process of new energy vehicle battery electrodes. By employing a collaborative compensation technique using four TMR2615 linear chips, the installation error tolerance was improved to ±0.5 mm while maintaining an absolute angular accuracy of ±0.1°. This resulted in annual cost savings of over one million yuan per unit of equipment.
3. One-Stop Solution Provision
Some manufacturers specializing in the electroforming of precision grating mesh not only provide electroforming services but also integrate processes such as photolithography, evaporation, and sputtering to achieve integrated processing of grating mesh and equipment brackets. For example, in a custom filter solution developed by a manufacturer for high-end servers, electroformed filters were bonded to aluminum alloy brackets using laser welding technology. This combination allows the product to combine the precision of metal filters with the heat dissipation properties of aluminum alloy, expanding the operating temperature range to -40°C to 150°C.
4. Rapid Response and Flexible Production
Specialized manufacturers are typically equipped with roll-to-roll etching production lines, supporting flexible production ranging from small batches (e.g., 100 pieces) to large-scale production (in the millions). Through an integrated CAD/CAM design system, rapid prototyping within 24 hours is achievable, meeting equipment manufacturers’ time-sensitive requirements for new products. For example, a manufacturer customized etched filter screens for a smart home appliance brand, completing the process from design to delivery in just 72 hours, helping the client seize a competitive edge in the market.
5. Wide Range of Industrial Applications
Products manufactured through the electroforming process of precision grating mesh are widely used in the petrochemical, food and pharmaceutical, aerospace, automotive, and electronics and telecommunications industries. For example, in the petrochemical industry, electroformed filter screens are used to filter particulate impurities from liquids and gases, ensuring product quality and production safety; in the air purifier sector, electroformed filter screens remove impurities such as dust from the air to provide clean air; and in wastewater treatment plants, they are used to filter out impurities from water, thereby improving water quality.
Thanks to its high precision, high complexity, and high flexibility, precision electroformed grating processing has become a core technology in fields such as optics, electronics, and sensors. From household appliances to commercial equipment, and from traditional industries to the new energy sector, the electroforming process is continuously pushing the boundaries of materials and structures, driving the evolution of grating mesh toward miniaturization and high reliability. With ongoing innovations in materials science, photochemistry, and automated control technologies, manufacturers of precision grating mesh via electroforming will develop end-to-end intelligent solutions encompassing “design–simulation–processing–inspection,” providing more reliable quality assurance for global industries.
