Comments Off on Zinc Trivalent Chromate Sealer Salt Spray Test
Salt Spray Test Background
Five hundred pieces of customer hardware were barrel plated and chromated in Saporito Finishings high-corrosion resistant chromate. Two sample sets were submitted for zinc trivalent salt spray testing based on ASTM B117-95, 5% neutral Salt Spray Test.
Following barrel plating on all 500 parts, 50 pieces were subjected to a subsequent treatment in a chromate sealer that enhances the corrosion resistance of the chromate.
Two sets were prepared:
Five customer parts processed through the barrel process and trivalent chromate.
Five blanks taken from the processed parts and sealed
Salt Spray Testing Procedure
The parts were placed in the salt spray chamber / cabinet, supported by polypropylene rods and cable ties
Zinc Trivalent Chromate Sealer Salt Spray Test Chart
Salt Spray Test Results
A set of the as plated and zinc Trivalent chromated parts were tested along with parts, which were zinc Trivalent chromated and sealed. Both sets met the 240-hour salt spray requirement; however, the Zinc Trivalent sealed parts performed better.
To receive more details about the benefits of zinc trivalent chromate sealer, please call 708-222-5317, or send us an e-mail , or submit the quick and easy form on the Contact Us page.
Comments Off on Saporito Finishing Announces New Web Site
Saporito Finishing Announces New Web Site
FOR IMMEDIATE RELEASE: Cicero, Illinois – Saporito Finishing Company, a leader in the Anodizing and Plating industry, is pleased to announce the debut of their newly redesigned web site. The site showcases a myriad of process capabilities offered by the company, including electroplating and anodizing, tumbling and deburring, and a variety of magnesium, aluminum, and mechanical finishes, in addition to consulting services.
The new website, www.saporitofinishing.com, features a wealth of information for the professional plater seeking assistance with specific metal finishing requirements, such as NH35 for Magnesium, Hardcoat Anodizing, or Sulfuric Anodizing. However, its well crafted design and content make it an attractive and user-friendly resource for metal finishing novices, too. The aesthetic qualities of the web site are not to be ignored, either; the company colors, red and black, were utilized during its development to create a branded and identifiable connection to the company. Incorporation of a flash animation on the home page immediately grabs visitors’ attentions, demonstrating Saporito’s services through a unique and harmonious blend of text and graphics.
Additional features include an updated, easy to navigate ‘Press Room’ featuring current and archived company news, a dedicated to case studies section, and a convenient quote request form that allows prospective clients to upload their project schematic or blueprint. The high quality, downloadable PDF brochure is a simple but impressive feature, as well. Please visit www.saporitofinishing.com to see other web site highlights.
Comments Off on Benefits: Corrosion Resistant Trivalent Chromate for Zinc
Trivalent high corrosion resistant chromate by Saporito is a clear/blue Trivalent chromate offering resistance for up to 150 hours to white rust (corrosion) and 264 hours to red rust (chromate) when tested to ASTM B117 neutral salt spray testing. The new trivalent chromate produces an attractive, bright blue trivalent chromate to meet automotive and other industry standards.
When testing 1010 cold rolled steel panels, zinc plated to .0002″ minimum thickness and chromated in the high corrosion resistant trivalent chromate, the panels showed only 3% white corrosion and no red rust after 264 hours.
High corrosion resistant trivalent chromate yields higher corrosion resistance than conventional hexavalent chromates while producing a more uniform and aesthetically pleasing blue-bright appearance compared to the iridescence and non-uniform appearance of traditional hexavalent chromates, including yellow and olive drab.
The trivalent chromate also eliminates the environmental concerns associated with toxic hexavalent chromates, while meeting the automotive and European directives to eliminate hexavalent chrome. High corrosion resistant trivalent chromate is not affected by baking or exposure to heats associated with curing processes typical in paints, powder coats and rubber molding, as well as service conditions.
Traditional hexavalent chromates dehydrate when exposed to temperatures in excess of 150 degrees Fahrenheit. These dehydrated chromates crack and expose the substrate underneath which then corrodes and fails completely. Trivalent chromates can be baked at temperatures up to 400 degrees Fahrenheit with minimal degradation of their corrosion resistance making them excellent bases for paints and rubber bonding and superior to hexavalent finishes.
To learn more about Saporito’s high corrosion resistant trivalent chromate for zinc, please contact us.
Saporito Finishing Company now offers a high-corrosion trivalent chrome conversion coating for aluminum, magnesium and zinc die castings that will help eliminate the need for toxic hexavalent chrome use. The conversion coating is a clear blue finish similar to standard clear chromate and meets or exceeds MIL C 5541 high-corrosion resistance requirements, as tested per ASTM B117.
The coating was originally developed by the U.S. Department of the Navy and licensed to several manufacturers. Saporito Finishing worked with the Navy and its licensees to test the products ability to meet the requirements of industry standards, as well as corporate and global directives to eliminate use of toxic hexavalent chrome including RoHS and ELV.
Extensive comparison testing showed that the new trivalent chrome conversion coating performed as well as or better than conventional hexavalent chromate conversion coating. Results of 168-hour, side-by-side neutral salt-spray tests, as specified by MIL C 5541 and ASTM B117, include:
No difference in corrosion resistance of wrought 2024 and 6061 panels.
Better performance by trivalent chrome conversion coating on A380 die cast panels.
Higher corrosion resistance yielded by trivalent chrome conversion coating on castings.
In further testing, A380 die castings were coated with the trivalent chrome conversion coating, painted, and subjected to cross hatch adhesion testing. The panels showed excellent bonding capability with no compromise of the bond strength, as compared to the conventional hexavalent chromate.
The trivalent chrome conversion coating is also superior to hexavalent chromate conversion coating because it is not affected by baking or exposure to heats associated with curing processes typical in paints, powder coats, and rubber molding, as well as service conditions. While traditional hexavalent chromates dehydrate when exposed to temperatures higher than 150 degree Fahrenheit cracking and exposing the substrate underneath, which then corrodes and fails completely trivalent chromates can be baked at temperatures up to 400 degrees Fahrenheit with minimal degradation of their corrosion resistance. That makes trivalent chromates excellent bases for paints and rubber bonding, markedly superior to hexavalent finishes.
“We are thrilled to offer this new trivalent chrome conversion coating that eliminates the environmental concerns associated with hexavalent chrome” said Jeffrey Logan, Saporitos Operations Manager.
“The mandate to eliminate hexavalent chrome, which has found its way out of the automotive industry and into the electronics sector, will also impact customers in the medical sector this year, and other sectors of manufacturing are sure to follow. Its exciting to offer our customers a product that can replace hexavalent chromate coating, while offering equal or better performance.”
Saporito Finishing Company, located in the Chicago suburb of Cicero, IL, is an ISO certified company with more than 60 years of plating, anodizing, finishing and metal treatment knowledge, as well as tumbling and deburring capabilities. The company offers more than 135,000 square feet of processing area, supplemented by full-service chemical laboratories meeting the needs of customers in the electronic, aerospace, aircraft and commercial industries.
Comments Off on Increase Zinc Rack Plating by 300 Percent
Usually such a wild claim would seem to good to be true, but with the right tools and the right manufacturing processes, you can seethis kind of increase in your zinc rack plating requirements.
Modern manufacturing is a constant juggle of cost, efficiency, andspeed, and zinc-plated parts are no exception. Can you afford not to use the fastest, most cost-efficient processes available?
What if you could:
Increase production speed by up to 300%
Reduce lead times by up to 80%
Turn around a large volume order in one day
Increase Production Speed up to ThreeTimes Faster without Sacrificing Quality
Today’s manufacturers need higher efficiency and faster lead times. Located in suburban Chicago, Saporito Finishing Company’s newfully automated zinc rack plating line delivers. Large volume jobs that used to take 3 days, can now be turned around in one day. We now offer one of the largest lines of its type in the Midwest to industries worldwide. And better yet, it’s environmentally friendly, with RoHS compliant, hex-free trivalent chromating in both clearand yellow. Saporito Finishing’s commitment to the environment has set the standard in pollution compliance in the Midwest for decades, and has been recognized by a Governor’s Award for its environmental compliance in the State of Illinois.
Providing High-Quality Finished Metal Partsfor More than 60 Years
Saporito Finishing Company covers the full spectrum of your metalfinishing needs.
Our services include:
Aluminum & Magnesium Anodizing
Metal Finishing• Tumbling & Deburring
Special Finishes
Trivalent Finishes
The quality, speed, and efficiency of Saporito Finishing Company’snew zinc rack plating line will exceed your expectations. Put our quality processes to work for you.
Contact our Internal Sales Representative, Reuben Loganreuben@saporitofinishing.com, for more information on how you can increase your production speed by up to 300%.
Comments Off on Benefits: Hard Anodized Aluminum Coatings
Hard anodizing aluminum makes aluminum retain the basic advantages of aluminum while providing greatly improved wear, heat resistance, and corrosion resistance.
The number of applications for hard anodizing continues to grow in the appliance, aerospace, food processing, military, and fire fighting equipment markets. There are also hard anodized aluminum applications for cylinders, hydraulic gears, pistons and other mechanical devices experiencing considerable wear resistance.
The Process: Hard Anodized Aluminum Coatings
Hard anodized aluminum coating uses a special electrolytic process that produces a dense hard layer of aluminum oxide both on and in the aluminum surface. The coating is thick by normal anodizing standards, ranging typically from 1 to 3 mils, or more if desired. Hard anodizing penetrates the base metal in a ratio equal to the build up on the surface.
Other hard anodizing properties include:
Color Varies from colorless to light brown on pure aluminum as coating thickness increases from 1 to 5 mils. Alloys vary in color from tan to jet black, depending upon the alloy composition and coating thickness.
Surface Finish Surface roughness increases as the coating thickness increases; typical increases are 10 to 20 micro inches for wrought alloys and 50 to 100 micro inches for castings. Parts can be used as is or honed, lapped or ground where fine finishes are required.
The Benefits of Hard Anodizing
The benefits of using hard anodizing include:
Tolerances The coating follows the contour of the part with uniform buildup, providing very close tolerance control. Holes 1/4 or larger in diameter will show coverage. It is also very effective on parts with unusual shapes, due to the excellent throwing power obtained in the hard anodizing process.
Wear Resistance Hard anodized coatings are more than 10 times more wear resistant than ordinary anodized aluminum. Hard anodized aluminum exhibits only half the amount of wear that cyanide case hardened steel shows after 50,000 cycles of the standard Tabor abrasion tester.
Hardness Microhardness tests on hard anodized aluminum typical have values of 500 to 530 VPN. Microhardness is nearly independent of coating thickness up to 1.5 mils.
Heat Resistance Hard anodized coated parts can withstand short exposures of temperatures up to 2000 degrees centigrade due to the inert nature of the coating.
Thermal Properties Hard anodized coatings exhibit very low thermal conductivity and expansion but excellent thermal emissivity. At higher thickness, emissivity is comparable to a black body in terms of heat dissipation, offering little advantage to dying it black.
Corrosion Resistance Hard anodized coatings typically pass the 1000-hour 5% salt spray test (ASTM B-117).
Electrical Properties Hard anodized coatings are excellent electrical insulators, exhibiting electrical resistance on the same order of magnitude as glass and porcelain.
White Paper: Hard Anodizing
To receive a free white paper with more details on the benefits of hard anodized aluminum coatings, please contact us.
Comments Off on Saporito Named Top Vendor By Task Force Tips
Saporito Finishing Company, specialists in finishes for aluminum, magnesium and zinc die castings, has received the Vendor of the Year Award from Task Force Tips (TFT), a manufacturer of high performance fire suppression equipment based in Valparaiso, IN.
Saporito was selected from 271 suppliers for their work in anodizing and plating aluminum nozzle parts. Companies were judged on a nine-point vendor checklist that measured performance against technical standards as well as overall business practices. This is the second time Saporito has won the award from TFT.
“One of the key measures is how many parts are non-conforming per ISO 9000 standards. Saporito only had six or seven problems out of the tens of thousands of parts they supply to us,” said Kevin Briggs, materials manager for TFT. “In addition, they’re a good partner in terms of turnaround and adapting quickly to our changing needs.”
Specific selection criteria included product quality and performance; consistency and accuracy of delivery and the packing of product and shipping quality. Other measures included competitive pricing; invoicing accuracy; knowledge and helpfulness of the sales and support staff; and overall cooperation.
“In light of today’s stringent manufacturing requirements and expectations, this award is particularly gratifying,” said Mike Swasko, Saporito’s sales manager.
Saporito Finishing Company, located in the Chicago suburb of Cicero, IL, is an ISO certified company with more than 55 years of plating, anodizing, finishing and metal treatment knowledge, as well as tumbling and deburring capabilities. The company offers more than 135,000 square feet of processing area, supplemented by full service chemical laboratories serving customers in the electronic, aerospace, aircraft and commercial industries.
Comments Off on High Corrosion Resistant Trivalent Chromate for Zinc
PRESS RELEASE
For Immediate Distribution
Latest Production Capabilities Announced
Saporito’s High Corrosion Resistant
Trivalent Chromate for Zinc Offered
Cicero, IL . . . Saporito Finishing Company’s high corrosion-resistant trivalent chromate is a clear/blue chromate offering resistance for up to 150 hours to white rust (corrosion) and 264 hours to red rust (chromate) when tested according to ASTM B117 neutral salt spray testing. The new chromate produces an attractive, bright, blue trivalent chromate to meet automotive and other industry standards.
When testing 1010 cold rolled steel panels, zinc plated to .0002″ minimum thickness and chromated in the high corrosion-resistant chromate, the panels showed only 3% white corrosion and no red rust after 264 hours.
“Our high corrosion-resistant chromate yields higher corrosion resistance than conventional hexavalent chromates while producing a more uniform and aesthetically pleasing blue-bright appearance compared to the iridescence and non-uniform appearance of traditional hexavalent chromates, including yellow and olive drab,” explains Jeffrey Logan, Saporito’s director of technical operations and quality assurance.
The chromate also eliminates the environmental concerns associated with toxic hexavalent chromates, while meeting the automotive and European directives to eliminate hexavalent chrome. According to Logan, this mandate is finding its way from the automotive industry and into other manufacturing segments. The trivalent chromate meets these concerns and addresses ever-tightening EPA restrictions.
High corrosion-resistant chromate is not affected by baking or exposure to heats associated with curing processes typical in paints, powder coats, and rubber molding, as well as service conditions. Traditional hexavalent chromates dehydrate when exposed to temperatures in excess of 150 degrees Fahrenheit. These dehydrated chromates crack and expose the substrate underneath which then corrodes and fails completely. Trivalent chromates can be baked at temperatures up to 400 degrees Fahrenheit with minimal degradation of their corrosion resistance making them excellent bases for paints and rubber bonding and superior to hexavalent finishes.
