No, they are non-magnetic
Solid Film Chrome Coating
Solid Film Chrome Coating
Hybrid Coatings (Gullon)
Armoloy’s Nodular TDC combined with Solid-Film Coatings
solid film chrome coating
For Maximum Wear and Lubricity
Gullon® combines Armoloy Thin Dense Chrome with a choice of solid-film lubricants tailored to specific applications, creating a wear-resistant, lubricated surface. This coating is particularly useful in scenarios where components face long periods without maintenance or are used in non-lubricated applications.
The process involves applying nodular, microscopic spheres of TDC, followed by a thermoset top coating that enhances lubricity and corrosion resistance. Common topcoat, solid-film coatings include Molybdenum Disulfide, PTFE, or other Teflon-type products best suited for your application.
Optimal Lubricity with Wear Resistance
The Armoloy Corporation helps global manufacturers protect their most valuable, high-precision components with a broad spectrum of engineered compositions of thin dense chrome coatings.
At Armoloy, our engineering team meticulously assesses each application to select the most suitable surface texture and co-deposit. This careful and technical process not only protects metal components from potential failures but also enhances their operational efficacy and durability. With the introduction of Gullon®, a hybrid coating solution, we have made a notable advancement in addressing the challenges of friction and load bearing for metal components.
Gullon Highlights
- Chemically resistant
- Improved corrosion resistance
- Inherently lubricious
- Prevents galling
- Absolute adhesion
- Load bearing
Proven applications
Applying Gullon® can improve the long-term performance of applications within the following industries, as well as many others:
- Injection molding
- Pumps and compressors
- Linear motion
- Valves and rods
- Bearings
- Salt and brine environments
Certifications
- Aerospace Material Specification SAE AMS2438 Plating, Chromium Thin, Hard, Dense Deposit
- MIL—C-23422 Military Specification, Chromium Plating, Electrodeposited
- Aerospace Material Specification SAE AMS2406 | AMS-QQ-C-320, Chromium Plating (Electrodeposited)
- Aerospace Material Specification SAE AMS2460, Plating, Chromium
- AMS2406 Plating, Chromium, Hard Deposit
- ASTM B650 Standard Specification for Electrodeposited Engineering Chromium Coatings on Ferrous Substrates
Performance Characteristics
Gullon by the Numbers
- Surface hardness up to 78Rc
- Taber Wear Index (TWI) as low as 0.7
- 1000+ hrs Salt Spray
- 10% - 67% reduction in coefficient of friction
- Effective deposit range of .000050” to .0007” (1.27 to 17.78 µm)
- Low processing temperature, <150° F (<65°C)
Gullon
Features & Benefits
High wear resistance
Provides exceptional durability against wear and tear
Enhanced lubricity
Reduces friction, enhancing the efficiency and lifespan of components
Corrosion resistance
Offers protection against corrosive environments, extending component life
Absolute adhesion
Coating adheres atomically to base metals, preventing peeling, chipping, and flaking
Low friction
Maintains a low coefficient of friction (0.02 to 0.10), ideal for moving parts
Load bearing capacity
Combines strength with elasticity, supporting heavy loads without deformation
Thin, precise deposits
No post plate machining required. Does not affect part tolerances or balance
No sharp edge buildup
Minimizes dimensional change
The Science Behind Gullon
Hardness: The polymer topcoat is quite soft and typically wipes soon after actuation or initiation of service of the process part leaving the 78Rc nodular wear surface with trapped lubricant to act as the wear interface.
Surface Finish: The appearance of the processed part will be that of a smooth, coated part and can be provided in several colors with black and blue the most common choice. Once placed in service, and the top coat has been wiped, the surface retains the solid film particles even though the Armoloy wear surface is visible.
Density: The dense nature of the Armoloy TDC® coating means high corrosion resistance as the coating is almost free of micro-cracks (conventional chrome +/- 40 micro-cracks per cm2).
Gullon, with its dry-film lubricant can solve numerous problems, including friction/wear, corrosion, temperature extremes, sticking, vibration, galvanic activity, electrical insulation and conductivity. No requirement for post finishing (except special applications). Gullon is very slippery, very hard and resistant to most industrial corrosive environments.
Additional Metal Treatments
Services at Armoloy
The Armoloy Corporation is here to provide support for your project, starting from the discovery phase and continuing through a successful production launch. Whether coatings are considered during the initial part design phase or become necessary due to product failures in the field, our team can assist you at any stage in the process.
Research & Development
Fully equipped R&D plating lab for test runs, prototyping, and continual development of our plating technologies. Our turnkey approach ensures high-quality outcomes for your project.
Process Development & Validation
Support from design to product launch with coating selection, prototyping, testing, PPAP validation, and plating production on any scale. We also support a range of ASTM and AMS test methods with a NADCAP-certified laboratory.
Fulfillment
Armoloy ensures the development of a robust plating process that can be distributed to one of our 16 plating facilities. We’ll handle prototyping, process validation, and much more.
How Metals Fail
Some of the most common metal failures include:
Armoloy’s different metal coating solutions help industries avoid costly metal failures and unplanned downtime.
The Armoloy TDC coating will achieve hardness values of up to 78Rc, with results ranging from 72 to 78Rc. Standard hard chrome typically ranges from 68 to 72Rc. The higher rate of hardness is due to the increased density of the coating and lack of a micro-cracked surface. The hardness of the coating is not as applied to the part surface. Due to its incredibly thin nature, hardness readings taken directly on part surfaces measure a combination of the coating and part surface hardness. Coating hardness must be measured on a specially prepared coupon and tested per ASTM E384.
Armoloy TDC has been successfully used in virtually all industries including aviation, automotive, nuclear power, oil and gas production, injection molding, food and drug manufacturing, and many others. Any component that could benefit from improved wear resistance, corrosion protection, or reduced friction and improved release properties will benefit from the use of Armoloy Thin Dense Chrome.
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