| Diamond-Like Carbon Coated Valve Balls | ||
| Size Range | 1/2" to 56" (Custom sizes available) | |
| Pressure Rating | PN10-PN420 (Class150-2500) | |
| Body Material | A105, A350 LF2, A182 F304, A182 F316, A182 F321, A182 F51, A182 F53, A182 F55, A182 F60, A182 F44, A564 630 (17-4PH) INCONEL625, INCONEL718, INCONEL825, Monel 400, Monel 500 etc |
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| Core Process/Coating | ENP,HCR,STL6, STL12, STL20,Cr3C2, WC-Co, WC-Cr3C2-Ni, TiC-NiMo, SiC, CrC,ZrO2, Al2O3, Cr2O3, ZnO, TiO, Al2O3-TiO2,STL1, STL6, STL12,Ni60, Ni55, Ni45 etc. | |
| Operating Temperature Range | ≤1200°C | |
| Parameter Category | Core Technical Parameters | Standards for Determining Advanced Technological Level |
| Machining ball accuracy | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Processing ball Roundness | ≤ 0.025 mm | ≤ 0.011 mm (Micron-Level ) |
| Balls concentricity | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Other supplements | ≤ 0.4 μm | ≤ 0.1 μm (Mirror-Level) |
| Parameter Category | Core Technical Parameters | Criteria for High-End Technical Level |
| Coating Thickness Control | Thickness Uniformity | Thickness deviation at any spherical position ≤±8% (stricter than the general ±10% standard) |
| Thickness Tolerance Range | 100 - 300 μm (common range for wear-resistant layers); special ranges can be noted. No missed spraying for ultra-thin coatings (<10μm) | |
| Coating Adhesion Performance | Surface Hardness | HV 1300+ |
| Bond StrengthBond Strength | ≥80 MPa | |
| Interface PorosityInterface Porosity | <0.5% | |
| Coating Surface Quality | Surface Roughness (Ra) | ≤0.2 µm |
| Spraying Accuracy (Positioning & Coverage) | Spraying Positioning Accuracy | ±0.1mm |
Core Products: The DLC Coating Advantage for Demanding Service
Diamond-Like Carbon (DLC) is an amorphous carbon material that combines a significant fraction of diamond-like (sp³) bonds, granting it exceptional properties distinct from metallic or ceramic coatings.
Defining the Standard for Chemical Inertness and Purity
Unlike metallic coatings that may corrode or ionize, our DLC coated valve ball provides a barrier of exceptional chemical inertness. The stable carbon matrix is highly resistant to attack by a wide range of acids, alkalis, solvents, and aggressive process media. This makes Diamond-Like Carbon Coated valve Balls ideal for chemical processing, pharmaceutical applications, and food & beverage industries where product purity and corrosion resistance are paramount. The coating itself is non-metallic, non-catalytic, and non-contaminating.
The Ultimate Solution for Low-Friction, High-Cycle Applications
The inherent lubricity of the DLC structure is its hallmark. Our Low-friction DLC coated valve ball exhibits an extremely low coefficient of friction, often in the range of 0.05 to 0.15, even in dry or poorly lubricated conditions. This drastically reduces actuation torque, minimizes seal wear, and enables smooth, predictable operation over hundreds of thousands of cycles. It is the engineered choice for precision control valves, instrument air systems, and any application where stiction or high operating torque is a concern.
Superior Protection Against Adhesive Wear and Galling
In applications involving metal-to-metal contact or where microscopic welding (galling) occurs between surfaces, standard materials fail quickly. Our Wear-resistant diamond-like carbon valve ball presents an extremely hard (up to 3000 HV+) and smooth surface that prevents material transfer and adhesive wear. This is critical for valves in gas distribution, compressor systems, or handling sticky media, ensuring a consistent seal and preventing seizure.
A Comprehensive Surface Engineering System
The DLC coating valve ball we deliver is the result of a holistic process. Performance begins with our proprietary substrate finishing to achieve a mirror-like surface, essential for optimal DLC adhesion and performance. We then precisely control the PVD process parameters-such as bias voltage, gas composition, and temperature-to tailor the sp³/sp² bond ratio, optimizing the coating for specific needs, be it maximum hardness, enhanced elasticity, or lowest friction.
Technical Focus: Precision Engineering of DLC Coatings via Advanced PVD
The consistent, high-quality application of DLC on the complex spherical geometry of a valve ball demands precise, clean, and controlled technology. We employ magnetron sputtering or Plasma-Enhanced Chemical Vapor Deposition (PECVD) as our core processes.
Low-Temperature Deputation Preserves Substrate Integrity:
Our PVD processes occur at temperatures typically below 200°C. This is crucial as it prevents any alteration to the metallurgical properties (e.g., temper, hardness) of the precision-machined substrate, ensuring the Ball valve Balls retain their core mechanical strength while gaining the surface advantages of the DLC layer.
Ion Bombardment Ensures Unmatched Adhesion:
Prior to and during deposition, the substrate is subjected to intense argon ion bombardment (ion etching and ion plating). This ultra-cleans the surface at an atomic level and creates a microscopically rough interface, resulting in a true intermixing layer between the coating and the substrate. This process is fundamental to achieving the exceptional adhesion strength that prevents delamination of our DLC coating valve ball under high mechanical or thermal stress.
Precise Control of Coating Architecture for Tailored Performance:
By manipulating the deposition atmosphere with gases like argon and acetylene, we can engineer the DLC coating's properties. We can produce hydrogenated (a-C:H) or hydrogen-free (ta-C) DLC, adjust internal stresses, and even deposit multilayer or gradient structures. This allows us to offer Coated valve Balls that are perfectly suited for specific challenges, from pure wear resistance to combined corrosion-sliding wear environments.
Why Choose TongBall's Diamond-Like Carbon Coating Solution?
Specialists in Non-Traditional, High-Performance Coatings:
We focus on the niche where extreme wear meets the need for chemical purity and low friction. Our expertise in DLC is dedicated to solving problems that traditional thermal spray coatings cannot address.
Masters of Clean, Precision Coating Processes:
Our controlled PVD environment is a world apart from line-of-sight spray processes. It guarantees uniform coating thickness over the entire ball geometry, edge-to-edge, and produces a finish that is inherently smooth and dense, straight out of the chamber.
Focused on Delivering Functional System Performance:
We understand that a coating must work in concert with the seal and the system. Our solutions are designed not just to protect the ball, but to enhance overall valve performance-reducing torque, extending seal life, and ensuring leak-tight integrity in complex media.
Seeking to Eliminate Galling, Corrosion, and High Torque in Your Valve Operations?
If your applications are limited by chemical compatibility, frequent maintenance due to adhesive wear, or the need for smoother, lower-force actuation, a surface solution that offers inherent lubricity and inertness is key. TongBall's Diamond-Like Carbon Coating Technology provides a sophisticated, proven answer for these advanced operational demands.
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