Do You Have Questions….?
Do we chrome plate bumpers or other items needing cosmetic finish?
No, Armoloy® is an industrial application. A search for decorative chrome may lead you to the right source.
What is Armoloy ® TDC?
Armoloy® is an extremely hard precision chromium electrocoating applied to metal under rigid quality controls to produce amazing wear and corrosion-resistant surfaces providing a nodular finish.
How is it applied?
Armoloy® is applied electrolytically, following the general principles of electroplating, but employing proprietary chemistry and proprietary fixturing methods/materials. The process is known as "cool": parts will see temperatures no higher than 160’F. Lower temperatures means no risk of heat-induced damage (annealing, distortion, warping).
The Armoloy® coating serves three main purposes:
1. Wear/abrasion resistance (due to surface hardness).
2. Lubricity/release/friction reduction (due to nodular finish).
3. Corrosion resistance (on tool steel, comparable to 440’ C stainless
steel; chromium is a natural corrosion resistant).
What types of materials can be coated?
Nearly all ferrous and non-ferrous metals can be coated including common molding steels such as H-13, S-7, P-20, 420SS, A-2, D-2, as well as Moldmax and Ampcoloy copper alloys.
How thick is the coating?
A standard deposit thickness is .0001/.0003" per surface, however, in molding, the .00005/ .0002" range is more realistic given the tight tolerances that are the industry standard.
Is the hardness of the substrate an issue?
Generally, the harder the base metal, the more effective the Armoloy® TDC coating. Common Rc hardness of tool steels to be coated is 45-55 Rc.
Armoloy can also coat gas or non-nitrided surfaces, though it is important to indicate that this process has occurred before the Armoloy® coating process begins.
In the case of copper alloys, where hardness cannot be dramatically improved, the coating can still provide protection against abrasive wear without inhibiting copper’s thermal diffusion properties.
What about coating textured surfaces?
The Armoloy® coating, due to the thinness, will not "fill in" a textured surface; it will evenly coat the texture to which it is applied. It will impart increased wear resistance to the textured surface as well, allowing the tool to perform longer and more efficiently without expensive re-texturing.
Can tools of different types/dimensions be coated in the same lot?
Yes, Armoloy® fixtures each tool separately according to its design. It is not a batch or barrel process. Armoloy® can issue a processing charge that would cover the entire lot, including the various set-up/tooling requirements necessary to accommodate the different part geometries involved.
What temperature can the Armoloy® TDC withstand?
Armoloy® TDC coating will withstand temperatures from -400’F to 1600’F
What is the turn around or lead-time? Is expedite service available?
Standard turn around time is 3 to 5 business days after your order is received at our facility. Expedite service is available with prior notice and with expedite fees. Please contact our facility for more information on this.
Can Armoloy® TDC be stripped? What if a repair/design change is necessary?
Armoloy® can and does strip and reapply its own coatings via a proprietary, mild, non-acidic solution. Armoloy will selectively strip the coatings of its competitors, but requires as much information as possible to do so, including the type of coating, thickness, and the base metal on which the coating is applied.
Parts that have been stripped and or recoated many times, that have been welded, that suffer from metal fatigue, or that have not been properly stress-relieved may incur adverse effects from the stripping process. It is always in your best interest to provide Armoloy with as much information as possible prior to stripping.
An Armoloy TDC coated part may be repaired/machined/welded while coated. In the case of welding, the coating will vaporize at the point of the weld, leaving the balance of the coated surface intact and functional. When machining a coated surface keep in mind that the first .0001/.0003" of the machinable surface has a hardness of 78Rc. When machining a coated surface, flood the surface with coolant and take very thin cuts.
Hard chrome and electroless nickel are prone to chipping and flaking; is this the case with Armoloy® TDC?
Absolutely not. Armoloy guarantees an absolute bond with the substrate, one that will not crack, chip, flake or peel under normal operating conditions.