TDC - Thin Dense Chrome Plating
The TDC process is a low-temperature, multi-state process of electrocoating based upon chrome-plating technology. Instead of using conventional chrome-plating solutions and parameters, the TDC process utilises a proprietary chemical solution. The solution and application process are carefully monitored to produce a very thin, dense chromium coating. TDC deposits a crack-free satin matte finish of 99.9 percent chromium on the base metal surface, whereas most conventional chrome-plating process deposits will be in the 82 to 88 percent chromium range.
TDC is used across a variety of industries and for a multitude of purposes. It is particularly useful as a coating for bearings and bearing surfaces made of 52100, M-50, M-50 NIL, BG-42. 440C, and all pH basis metals. TDC enables bearing surfaces to run longer and cooler. U.S.A.F tests have shown that TDC enhances bearings, (both ball and roller), and does not affect nor induce fatigue nor change base metal characteristics. TDC also provides corrosion resistance exceeding 440C stainless steel.
Run longer with lower coefficient of friction. Use of 52100 bearing steel instead or stainless steel in corrosive environments, thereby reducing costs and shortening delivery time.
FD-USDA approved for product contact, TDC coated materials are used instead of expensive stainless steel.
Value-added benefits of TDC Coating.
- 78Rc Surface Hardness
- Reducing wear and friction in moving parts
- Absolute adhesion to basis metal – no chipping, cracking, flaking or peeling
- Improved release characteristics in plastics forming tools–cores, cavities, lifters, pins, screws, plates
- Reduced maintenance and part replacement costs
Extraordinary Properties.
TDC technology is unlike all other conventional hard chrome plating operations. Our proprietary TDC coating conforms precisely to details in metal tools, resulting in a hard (78Rc), slippery, and corrosion-resistant tool surface.
RMS finishes will improve slightly, to surface finish 8 (2 micrometers) . (Below (surface finish 8 - 2 micrometers - the process may deter slightly.) Surfaces greater than surface finish 62 (1.6 micrometers) will reflect greatly improved finishes.
Both internal and external surfaces on all part configurations can be uniformly processed. Employed as the finishing step for machine parts and manufactured components, TDC imparts a satiny, silver matte, micronodular finish.
