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Nutmeg Chrome has always pushed the envelope
in regards to building new standards for plating technology.
We provide the most diverse set of coatings in the industry today.
Click here for product brochures. |
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Slik Shot™, a high-end finish offered exclusively by Nutmeg Chrome, wears better and lasts longer than standard Nickel Teflon® coatings. Click here to order a sample.
Nutmeg's Slik Shot process is an electroless plated coating of a nickel phosphorus alloy, with Teflon® particles evenly dispersed throughout the coating offering optimum performance. With Teflon® particles included as an integral part of the plating deposit, corrosion resistance and wearability are greatly enhanced.
Cross section shows Teflon® particles evenly dispersed
throughout the entire plated deposit, providing
continuous lubricityand wear properties
In addition, this combination of nickel and Teflon® polymers offers an extremely low coefficient of friction, that makes it an attractive choice for applications which require superior mold release. This process is especially well-suited for use with molding applications that utilize plastics, epoxies, and silicones, where it enhances mold release characteristics, eliminating the need for release sprays.
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Plating Thickness Range |
.000050 up to .001" |
Tolerance |
± .000050" |
Hardness:
prior to baking
after baking |
45-50 Rc
60-65 Rc
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Coefficient of friction |
.05 |
Molding temperature |
up to 600º F |
Salt spray testing (ASTM) |
1000 hrs. |
Polish to |
SPI A2 |
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* Teflon is a registered trademark of Dupont® |
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Chrome Plus is hard chrome with Teflon®. This coating offers many of the same features and benefits as chromium plating, that is, low coefficient of friction and excellent wear capabilities. One would choose this coating over chromium when looking for good wear and extra release. This coating will have a hardness of 68 to 70 Rc. In regards to salt spray testing (ASTM), this coating exceeds 500 hours without showing any signs of breaking down.
The coefficient of friction is lower than chrome, approximately .10. The increased lubricity is especially well suited with molding applications utilizing plastic, epoxy, silicone and rubber, as well as fire retardant and glass filled materials. This coating offers excellent release and is often used where most other coatings fail in those areas.
A standard plating procedure is used to apply this coating and it can be easily achieved. Plating thickness ranges from .0001 to .001, but is usually in the .0001 to .0002 range. This coating can be polished to a SPI A2 finish.
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Nutmeg Nichromold® is a multi-alloy deposit utilizing chromium and nickel phosphorus alloys. This uniform highly abrasion resistant finish also offers superior corrosion protection, increasing the life of complex tools and assemblies. The ability of Nutmeg Nichromold® coating to be applied at a thickness of up to .002", with exceptional uniformity (±.00005"), makes it an effective tool for making dimensional changes on plastic molds, or changing the pitch of threaded components.
Nutmeg Nichromold® has proven to be a highly abrasion resistant coating that significantly increases part life. Its ability to provide excellent adhesion to a wide range of base metals eliminates one of the main causes of poor abrasion resistance.
Nutmeg Nichromold® coating offers superior corrosion protection from materials normally considered to be troublesome, such as poly vinyl chloride in plastic molding applications. |
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Plating Thickness Range |
.0001 up to .002" |
Tolerance |
± .0001" |
Hardness:
prior to baking
after baking |
68-70 Rc
68-70 Rc
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Coefficient of friction |
.15 |
Molding temperature |
up to 700º F |
Salt spray testing (ASTM) |
144 hrs. |
Polish to |
SPI A1 |
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Nutmeg has the ability to meet your polishing needs. We can take an EDM finish to a SPI A-1 or anywhere in between. We utilize ultrasonic polishers for use on the more intricate molds.
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Nutmeg Electroless Nickel is a unique non-electrolytic process that can provide a bright or semi-bright highly uniform nickel phosphorus alloy coating which exhibits good wear properties and excellent corrosion resistance. Deposit thicknesses can be held to within .00005", even over complex shapes, deep recesses, and internal passageways.
Applications needing additional hardness can benefit from precipitation hardening, which allows for hardness to be controlled. However, hardness and wear resistance are not always synonymous, sometimes a softer coating will provide longer wear. Generally, an inverse relationship exists between the degree of hardness of an electroless nickel coating and its corrosion resistance. The higher the hardness the less able it is to resist corrosion.
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Plating Thickness Range |
.000050 up to .002" |
Tolerance |
± .000050" |
Hardness:
prior to baking
after baking |
46-56 Rc
65-68 Rc
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Coefficient of friction |
.21 |
Molding temperature |
up to 700º F |
Salt spray testing (ASTM) |
1000 hrs. |
Polish to |
SPI A1 |
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Since its introduction in 1924, Hard Chromium has been the benchmark by which all other electrolytic metal finishes are measured. It provides excellent wear properties, corrosion resistance, and low coefficient of friction. As an added service Nutmeg can polish chromium to a spectacular blue-white SPI A1.
The corrosion resistance of hard chromium is affected significantly by the condition of the base material. As with nickel coatings, the corrosion resistance of hard chromium is dependent on the quality of the barrier deposit provided prior to plating. Macroscopic and microscopic discontinuities must be minimized to provide suitable corrosion resistance. A properly ground or polished tool, plated with .00075" of hard chromium, that has a smooth homogeneous surface and is free of defects, will pass a 72 hour standard salt spray test with ease.
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Plating Thickness Range |
.000050 up to .030" |
Tolerance |
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Hardness:
prior to baking
after baking |
68-70 Rc
68-70 Rc
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Coefficient of friction |
.15 |
Molding temperature |
up to 800º F |
Salt spray testing (ASTM) |
72 hrs. |
Polish to |
SPI A1 |
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This is a dull chrome with a matt finish. It is usually used when you want the protection of chrome, but not the glaze. Nutmeg's Thin Dense Chrome can be accomplished without blasting the part prior to plating.
This coating is generally applied in the range of .00005 - .0001 in thickness.
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Nutmeg Engineering Nickel is a fine grain pure nickel coating that has been developed specifically to meet the standard needs of the mold industry. The process is primarily used for build-up work when the high temperatures created during the welding process are undesirable, thereby eliminating the possibility of "heat sinks." Thickness in excess of .100" are attainable, allowing for design change without the time and expense of manufacturing a new tool. Engineering Nickel deposits more firmly than an equal thickness of chromium plating. Although nickel can be plated at various degrees of hardness, engineering nickel is designed to be plated at the same hardness as most tools steel. Softer deposits are available on request.
Engineering nickel is a barrier type coating. The greater the build-up, the more protection will be obtained. Although there have been applications where engineering nickel provides greater service life than the original steel, normal procedure is to overlay a hard chromium deposit for enhanced performance for a specific application.
*Please note that Engineering Nickel is not a uniform coating and all areas plated will require matching.
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Plating Thickness Range |
.001 up to .100"" |
Tolerance |
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Hardness:
prior to baking
after baking |
40-50 Rc
40-50 Rc
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Coefficient of friction |
.22 |
Molding temperature |
up to 500º F |
Salt spray testing (ASTM) |
70 hrs. |
Polish to |
SPI A1 |
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