Sep. 18, 2025
Reliability and safety are the foundation of nuclear power control systems. To meet strict customer requirements, we have developed new 19'' subrack manufacturing processes that improve both appearance and functionality.
Our approach combines trivalent chromium passivation, powder coating, and contact surface protection treatment. These innovations provide better conductivity, corrosion resistance, and EMC compliance while also meeting international environmental standards such as RoHS.
We have developed new processes for the nuclear power plant DCS and other control systems to meet customer requirements for appearance and subrack functionality.
For aluminum structural components, trivalent chromium passivation forms a thin inorganic passivation film on the surface, offering excellent conductivity. With the "secondary passivation" technique in the new generation process, the contact resistance is ≤0.5 mΩ·cm².
Compared to hexavalent chromium passivation, trivalent chromium is more environmentally friendly and complies with regulations such as RoHS.
Powder coating provides a thick layer with excellent insulation, corrosion resistance, and decorative properties, making it suitable for the exterior surfaces of chassis to enhance appearance and environmental adaptability.
To meet EMC (Electromagnetic Compatibility) requirements, conductive contact surfaces (such as grounding, bonding, and shielding surfaces) are masked to ensure conductivity. This is critical for fulfilling EMC standards.
The design of "partial conductivity + overall insulation" has become a standard process in product design and manufacturing for EMC, balancing shielding performance with appearance and protection.
Trivalent Chromium Passivation: Provides corrosion protection, maintains conductivity, and ensures environmental compliance (RoHS).
Powder Coating: Offers excellent appearance, corrosion resistance, and insulation, ideal for exterior surfaces.
Contact Surface Protection: Ensures continuity in grounding and bonding conductivity, meeting EMC requirements.
Q1: Why is trivalent chromium passivation used?
It provides strong conductivity and corrosion protection while meeting RoHS environmental standards.
Q2: What are the benefits of powder coating?
Powder coating improves appearance, adds corrosion resistance, and provides reliable insulation.
Q3: How does contact surface protection help with EMC?
It keeps grounding and bonding areas conductive while ensuring overall insulation for EMC compliance.
Q4: Are these processes only for nuclear power systems?
No. They can also be applied in other industries that need high reliability and EMC performance.
Q5: How do these processes improve customer satisfaction?
They ensure durability, compliance, and better product appearance, meeting both technical and regulatory needs.
Advanced manufacturing processes for nuclear power plant DCS and other control systems, including trivalent chromium passivation, powder coating, and contact surface protection treatments, ensure corrosion resistance, excellent conductivity, and compliance with EMC and RoHS standards. These innovations enhance both the performance and appearance of subracks, reflecting the high-quality solutions offered by RDEKONO.
Oct. 01, 2023
For PCB board of the subrack insertion and extraction, Provides assistance when pulled out.Composed of four parts: handle, scutcheon, printed board bracket, and shaft. Handle material: PC+GF20%, Fire retardant standard: UL94V1, printed board bracket material: die-cast zinc alloy surface nickel plating.
Oct. 08, 2023
The subrack does not have a series of profiles, and after receiving an order, it is usually customized and processed according to the drawings. Products from different customers and products of different specifications from the same customer all need to be redesigned and processed, resulting in higher costs;