Hard Chrome Plating
Hard Chrome Plating has long been used to increase wear, reduce the coefficient of friction, provide corrosion resistance, provide superior release in mold applications and reduce galling and abrasion. In short, hard chrome will improve the efficiency and increase the life of the plated part. On shafts, pins and other high wear components, the benefit of chrome increases in proportion to the thickness of the deposit (up to approximately .004" thick per surface). Whether it be build-up, smoke or flash chrome, our years of servicing the tool and die and mold making industry has given us the expertise necessary to supply the highest quality chrome plating available. At Meadville Plating we utilize conforming anodes and state-of-the-art rectification to insure uniform deposit thickness. Our in-house chemistry department constantly monitors our plating baths to ensure that the chemistry of our baths are capable of providing the best deposit possible. This, coupled with our attention to detail, is essential for achieving the quality Meadville Plating has become known for.
MPC is proud to announce our compliance with the new OSHA standard for employee exposure to hexavalant chrome in the work place. A copy of the independent test results are available upon request.
Deposit Thickness: .00002" - .040"
Lubricity: Produces a hard, (approximately 68 Rc) lubricious surface. Coefficient of friction .15
Adhesion: Applied electrolytically, resulting in a superior bond to platings or coatings applied without the use of electricity (i.e. electroless nickel, etc.).
Heat Resistance: -400° to 1300° Fahrenheit. Above 1300° Fahrenheit it will react with carbon monoxide, sulfur vapor and phosphorus.
Appearance: Satin/Matt to SPI A1 finish. Chrome reflects the appearance of the base metal. It can be polished to achieve the desired finish.
Standards: Conforms with ASTM-B177, AMS-2438a (10/98), ASM-2406, QQ-C-320B Class 2 Type 1 & 2
Hydrogen Embrittlement: Hydrogen embrittlement can occur when hardened tool steel (Rc 52 or harder) is plated with industrial hard chrome. Stresses caused by the formation of hydrogen in the deposit can render the component susceptible to fracture. Although overlooked by many platers, this problem is easily solved by baking the component at 350 F within 8 hours of plating.
PROVEN APPLICATIONSFlash (.0001" - .0005") and Smoke (.00005" or less) Inserts, cavity blocks, core pins, cores and cavities, all injection mold components, extrusion molds, crimpers, slides, laminates. Build-up for increased wear, repair and salvage Shafts, pins, moveable cores and slides and almost any high wear components. We are also able to apply chrome to carbide. Machining: Meadville Plating has the in-house OD Grinding capabilities to pre-grind, hard chrome plate and finish grind damaged cylindrical products or components to exacting specifications. |
Example of Flash Chrome |
Example of build-upon shut-off area of mold core. |