RAYDENT treatment is an advanced low-temperature electrochemical surface treatment technology engineered to form an integrated alloy-ceramic surface layer on metallic materials. Operating at cold bath temperatures near 0°C, it completely eliminates the thermal deformation hazards of conventional plating while delivering exceptional corrosion and wear resistance.
Figure 1: RAYDENT Low-Temperature Black Chrome Plated Linear Motion Parts
1. What is Low Temperature RAYDENT Treatment?
Unlike conventional decorative chrome or nickel plating, the RAYDENT process is conducted in a chilled bath controlled near 0°C:
- Alloy-Like Diffusion Layer: The reaction deposits a 1 μm to 3 μm ceramic film on the surface while simultaneously penetrating approximately 1 μm deep into the metallic lattice. The coating and base metal are completely integrated, preventing flaking or exfoliation even under heavy mechanical deformation.
- Super Corrosion Resistance: Forms a continuous protective barrier that withstands over 1,000 hours of standard salt spray testing without red rust, far surpassing traditional hard chrome.
- Zero Thermal Distortion: Because the electrochemical reaction takes place at 0°C, precision ground guide rails, ball screws, and spline shafts suffer zero heat-induced warping or annealing.
- Matte Black Non-Reflective Finish: Produces a uniform deep black aesthetic, ideal for optical inspection chambers, laser processing stages, and cleanrooms.
2. RAYDENT Nucreal Advanced Polymer Impregnation
The outer ceramic oxide layer contains microscopic pores that can be impregnated with functional high-polymer resins (fluorocarbon resins, silicone, organic polymers). This composite structure provides:
- Self-lubricating dry-running capability without liquid grease.
- Outstanding vacuum compatibility (zero outgassing) for semiconductor chambers.
- High chemical resilience in harsh cleanroom vapor environments.
3. Comparison Between RAYDENT and Standard Hard Chrome
| Characteristic |
Standard Hard Chrome Plating |
Low-Temp RAYDENT Treatment |
| Processing Temperature |
50°C – 65°C |
∼ 0°C (Chilled Bath) |
| Thermal Distortion Risk |
Moderate to High (Waist/Dog-bone effect) |
Zero Distortion (Original Precision Intact) |
| Bonding Strength |
Mechanical Adhesion (May flake) |
Atomic Lattice Diffusion (Never exfoliates) |
| Coating Thickness |
10 – 30 μm (Alters shaft tolerance) |
1 – 3 μm (±0.5 μm Uniformity) |
| Corrosion Resistance |
~96 Hours Salt Spray |
> 1,000 Hours Salt Spray |
| Surface Color |
Bright Silver / Reflective |
Uniform Matte Black / Non-Reflective |
