ATTENTION: United Surface Finishing is pleased to announce, effective 3-1-12, that we have purchased the assets of K Chrome, allowing us to provide mirror-finished levellor rolls and steel mill rolls.

Durafin SFP

What is Durafin SFP®?

United Surface Finishing’s proprietary DuraFin SFP® hard chrome plating process maximizes plating efficiency and delivers consistent chromium thicknesses with a precise conforming anode-to-cathode ratio imperative. This is accomplished by through rigorous quality control procedures and unparalleled attention to detail that does not alter the dimensions or mechanical properties of the substrate to any appreciable extent.

Chromium deposits from the DuraFin SFP® process have proven to be harder, smoother, brighter, and more durable than either conventional or mixed-catalyst processes with less part-to-part variability. More importantly, DuraFin SFP® hard chrome plating significantly outperforms both conventional and mixed catalyst procedures in regards to wear properties and corrosion protection. Simply put, DuraFin SFP® has proven to be a superior chromium plating method in every way. See the data here.

Substrates for Durafin SFP®

Durafin SFP® can be applied to any base metal. Typical applications include:

Aerospace
Aircraft
Bearings
Blowers
Bolts
Bottlers
Cutting Tools
Dies
Drills
Electronics
Engines
Files

Forms
Gauges
Gears
Molds
Printing
Pumps
Robotics
Rollers
Splines
Taps
Threads
Tools

This is by no means a complete listing of all Durafin SFP® applications. It can be used wherever thin deposits are preferred, the deposit structure is critical, or where corrosion resistance is important.

Finishes and Options

Satin
Bright

Benefits of our DuraFin SFP®

Following are the benefits of using the DuraFin SFP®:

Surface hardness of approximately 70 Rockwell C
Creates a micro-crack structure which enhances corrosion resistance
Friction and wear are reduced with improved lubricant retention
Bond strength exceeds 125,000 psi and will pass a severe bend test
Coating can be easily stripped with conventional methods
95% fatigue limit reduction over conventional hard chrome
93% reduction in deposit internal stress
Eliminates build-up and nodulization on sharp corners and edges
For more detailed technical data, click here.

Our Production Capabilities

From our state-of-the-art 30,000 square foot facility in Canton OH, we provide full-service plating to customers from across the Midwest. Our production capabilities include:

Nine Plating Tanks for Fast Turn-Around
Plating Capabilities Up To 164” in Length and 30” O.D.
Flash to a Heavy Build-Up of .050” (Chrome)
Tolerances Within .0002”
Small and Large Parts
Rack
Prototypes
Production Runs From 1-1MM Pieces

CAPACITIES	HARD CHROME	GRINDING	ACID STRIPPING	DURAFIN SFP®
Maximum Weight	6,000 lbs	6,000 lbs	4,000 lbs	6,000 lbs
Maximum Diameter	30"	24"	32"	22"
Maximum Length	164"	130"	240"	54"
Maximum Width	144"	—	32"	42"
Tank Depth	120"	—	42"	60"

From start to finish, we understand that every step of the production process is critical to achieving the standards both we and our customers expect. That’s why we can also provide pre- and post-plating services upon request such as abrasive blasting, buffing and polishing, centerless belt-sanding, and stripping. See Extended Services for a complete list.

Looking for
technical data?

For more detailed technical data, click here.

Advantages

Durafin SFP® offers a number of advantages over standard hard chrome.

Does Not Alter Substrate Dimensions
Harder (approximately 1075 Vickers or 70 Rockwell C)
Enhanced Wear Resistance
Greater Corrosion Protection
Brighter Finish

These extra qualities make Durafin SFP® ideally suited for use with hydraulic rams. If the hydraulic ram operates in dirty or hostile environments, this hard chrome process inhibits dirt from lodging in seals maintaining the integrity of the ram.

Durafin SFP® eliminates secondary steps such as grinding and polishing. It can also be used when a standard chrome is specified for your substrate.