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Domestic precision fluid dispensing valves, empowering China’s aviation equipment manufacturing industry to set sail.

2024-05-11 19:37:51

Aviation equipment manufacturing is a technology-intensive, high-end equipment manufacturing sector. It not only reflects a country’s comprehensive national strength, but also represents the culmination of industrial technological capabilities. Its development level is an important indicator of a country’s economy, technology, scientific research, and modern industrial development.

In recent years, with the deployment of COMAC in both domestic and international markets, China’s aerospace industry has entered a new stage of large-scale development. According to The Paper, domestically produced large aircraft are developing steadily under the principle of Designed in China, system integration, global bidding, and gradual improvement of domestic content. It is estimated that by 2026, there will be around 150 local supporting suppliers and cooperative partners in the large aircraft industrial chain, with an industrial scale of approximately 80 billion yuan. China’s aviation equipment manufacturing is truly moving toward the world’s top tier.

In aviation equipment manufacturing, China’s airframe manufacturing technology has achieved high precision and automation. The performance, reliability and economy of aero-engines have been greatly improved, and the R&D technologies of airborne equipment continue to innovate and improve. The domestic production of complete aviation equipment is at a key stage of gradually increasing domestic content, creating an urgent need to enhance the resilience and security of the large aircraft industrial chain.

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Aviation Connectors: Challenged by High Precision, Reliability and Stability

A large airborne system consists of many sub-modules that require intensive data exchange. Interconnection between these sub-systems relies on connectors and cables. As one of the most widely used electronic components in aerospace, connectors are of vital importance.

Especially in harsh environments such as corrosion, interference, vibration and impact at different altitudes, as well as potential emergencies, structurally precise connectors face extremely strict requirements for reliability and protection level.

The assembly of aviation connectors requires special adhesives, and the dispensing on the middle frame demands very high standards: not only high precision, but also flawless application, ensuring stable physical structure and high airtightness of the finished connectors. To meet these technical requirements, high-precision piezoelectric valves are adopted to achieve micro-precision dispensing for various specifications.

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High-Precision Piezo Jet Valve: The Hexagon Warrior in Precision Dispensing

Our client is a high-tech enterprise specializing in aviation connectors, providing interconnection solutions for aviation, defense, and high-end manufacturing. It is a designated connector supplier for China’s domestically built large aircraft.

Driven by aviation safety, reliability, and an extreme pursuit of quality, the client put forward extremely stringent and detailed process requirements. They were highly cautious in evaluating the performance, quality, and process applicability of piezo valves—key production components for connectors.The client conducted multiple rounds of tests covering speed, precision, stability, dispensing performance, and other key indicators.

In the end, SAMON piezo valves stood out and won full recognition and trust from the client thanks to their stable and efficient performance, comprehensive one-stop R&D and manufacturing services, and superior solution design capabilities.The client chose to adopt SAMON high-precision piezo jet valves for the two-component epoxy dispensing in the optical connector cover bonding process.

Connector Dispensing Process Requirements

Dispense two-component adhesive on the middle frame of optoelectronic connectors, with proportional mixing.
Uniform adhesive output with excellent consistency.
Frame line width: < 0.3 mm.
Full adhesive coverage on the frame line without gaps to ensure sealing performance.
No adhesive application or overflow on the light-transmitting holes outside the frame line to avoid affecting communication.
Smooth and uniform dispensing lines without waves or serrations to ensure reliable physical structure.

SAMON Technology Solution

With years of manufacturing experience and expertise, SAMON Technology cooperates with customers to optimize the structure and functional parameters of key components for this high-complexity dispensing project.

Our self-developed piezo valves achieve outstanding results in meeting the above requirements.

Nanolitre (10⁻⁶ mL) precision fluid control, line width accuracy: 0.2–0.3 mm
Maximum jetting speed: 1,000 Hz for high-efficiency dispensing
Advanced heating module to improve adhesive flow and dispensing efficiency
Precise temperature control to prevent adhesive curing inside the valve and ensure yield
Advanced control logic for consistent adhesive lines, no gaps, insufficient adhesive or overflow
Long-term stability: over 600 million continuous jets to guarantee process yield and consistency

The assembly and production of aerospace connectors have put forward a comprehensive and high-standard test for domestic dispensing technology. With the advantages of high precision, high stability and independent R&D, SAMON Piezo Jet System helps improve the technology of aerospace connectors and jointly promotes the new process of industrialization and large-scale development of China's domestically built large aircraft.