DYNALLOY™ is a process wherein dry film lubricants; friction stabilizers; friction increasing inorganics, or some metallics can be fusion alloyed to surfaces in unique thin layers of coating. With dry lubricants any solid surface can be treated.
The lubricating DYNALLOY™ process fuses high purity electric furnace graphite, technical grade molybdenum disulfide or tungsten disulfide to the surface being treated. DYNALLOY™ uses a fusion energy that alloys the lubricant to the substrate. This fusion force while great enough to bond the lubricant to the hardest surfaces is gentle enough to process delicate parts of glass. The DYNALLOY™ process, a new development, is proprietary and subject to non-disclosure while patent application is evaluated.
DYNALLOY™ starts with technical grades of a specific lubricant. Particle size distributions are different for each material, however, generally these range between <1 micron to 150 microns. A unique aspect of the DYNALLOY™ process is that the platelets become finer than technical fine grade during the fusion process. The fusion action of the DYNALLOY™ process modifies the lamella platelet size to between <.05 microns to 10 microns and the applied coating for each of the lubricating materials standardizes to less than .00008″ build up from the original surface. Total coating thickness is <.00012″ as DYNALLOY™ is also below the bearing surface.
With DYNALLOYTM a limited transfer of lubricant to hands or surfaces occurs from loose powder. The parts as processed develop a silvery polished appearance. This polish lowers friction for your startup and eliminates most friction variability during the component life cycle. A significant improvement over impingement and sputtering process is high volume runs are cost effective. Very small and delicate parts process cost effectively.
DYNALLOY™-G is our graphite process, DYNALLOY™-M is our molybdenum disulfide process and DYNALLOY™-T is our tungsten disulfide process. Each lubricant retains its character, except for particle size, after the fusion alloying process. No binders or adhesives are used.
A wide variety of specifications can be met , depending on the DYNALLOY™ solid lubricant employed. DYNALLOY™, while using a unique new application technique principal, will meet the functional requirements of impingement specifications. DYNALLOY™ opens up new dimensions in volume/moderate cost processing. DYNALLOY™ produces a unique oriented layer lattice lammella platelet [polished / burnished surface]. The following table shows the physical properties of DYNALLOY™.
| Lubricant | Process Code | Dimensional Surface Buildup | Thermal Stability (in air) | Comments | |
|---|---|---|---|---|---|
| Low | High | ||||
| molybdenum disulfide (MoS2) |
M | <.00008" (above metal surface) <.00004" (below metal surface) |
-325°F. | +750°F. | Do not use with detergent oils or fluids. Compatile with most greases, propellents, hydraulic and silicone fluids. |
| tungsten disulfide (WS2</sub) |
T | <.00008" (above metal surface) <.00004" (below metal surface) |
-325°F. | +950°F. | See above |
| graphite | G | <.00008" (above metal surface) <.00004" (below metal surface) |
-423°F. | +1650°F. | See above |
1Both MoS2 and WS2 exhibit lower coefficients of friction at high loads and high speeds. Both MoS2 and WS2 meet the functional requirements of DOD-L-85645. MoS2 and WS2 function in a hard vacuum.
2Graphite has free electrons and is conductive. Graphite is not suitable for hard vacuum. Graphite is compatable with radiation atmospheres. The performance curve for each lubricant varies. As a rule of thumb, graphite is best where high temperature environments are evident or where anti-flux is of benefit.
All three are class 1 materials, non toxic, exhibit extended shelf life, are dead soft with hardness on the Moh’s scale under 1.5 and are themselves corrosion resistant. None, by themself, offer any protection of the substrate from corrosive attack.
DYNALLOY™ affords boundary layer protection in “wet” non-detergent lubricants and fluid systems. In order to remove DYNALLOY™ completely, wear must progress below the original surface level. DYNALLOY™ load bearing capacity ranges from 25,000 psi to 50,000 psi dry and up to 300,000 psi wet. DYNALLOY™ works on all surfaces where the finish is lower than 125 rms surface roughness measure. These lubricants are not suitable for subcutaneous (in vivo) use, however, are safe for use in food handling and medical equipment.
DYNALLOYTM is of value in many areas to include (but not limited to): cryogenic systems; hydraulic systems; fasteners; pumps (especially in invert systems); cutting tools; welding spatter protection; release for injection molded plastic materials; elastomers; static drain paths; EMI/RFI conductivity; engine components; elastomer lubrication; aluminum extrusion and die casting (quality and production improvements); Atomic plants; etc., etc. Call or contact us for further assistance.
