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Engineered Metal Surfaces
- 1. Reducing Environmental Impact With Engineered Metal Surfaces Rigidized® Metals Corporation is
- 2. About Us • Rigidized® Metals Corporation Founded in 1940 • World leader in the development and production of deep-textured, three dimensional, engineered metal surfaces for architectural, industrial, and transportation applications. About Us All products are manufactured within 500 Miles of 55% of USA’s population and 62% of Canada’s population
- 3. Agenda Enhanced Rigidity Improved Stability Abrasion Resistance Corrosion Resistance Friction Reduction Light Diffusion Solar Reflectance Hydrophobicity/Soil Resistance Enhanced Acoustics Enhanced Thermal Transfer Fouling Resistance Benefits of Engineered Surfaces
- 4. 6WL® Deep-Textured Pattern Profile Improved Mechanical Properties
- 5. Enhanced Rigidity • Improves Strength-to- Weight Ratio • Allows Thinner Material • Controlled Deflection Enhanced Rigidity Use less material to achieve the same or enhanced performance.
- 7. Plain Stainless Steel at .6” deflection Rigidized® Metals Pattern 1RL at .9” deflection Enhanced Rigidity Enhanced Rigidity
- 8. Improved Stability • Impact resistance • Buckling strength • Tensile strength Durable products delay replacement and reduce maintenance frequency, saving time, energy and resources. Improved Stability
- 9. Abrasion Resistance Textured patterns hide & channel scratches, dents, dings and other aesthetic signs of high traffic abuse. Abrasion Resistance Textures deter vandalism, reducing maintenance costs and increasing product life.
- 11. Corrosion Resistance Alloy and surface finishes are the primary drivers for developing proper specifications for applications in corrosive environments. Corrosion Resistance Longer lasting products reduce maintenance resources and delay replacement.
- 12. Friction Reduction Textured surfaces provide less contact area, which allows materials to move more easily in chutes and conveyor systems. Friction Reduction Less friction means greater efficiency and less energy consumed.
- 13. Light Diffusion/Glare Reduction Project 2XmT Buffalo, NY Via 57 West New York, NY Light Diffusion/Glare Reduction
- 15. Solar Reflectance Solar Reflectance Sacramento International Airport High reflectivity of solar radiation provides heat island mitigation and huge energy savings.
- 16. Initial vs. 3 Year Aged SRI Data Various Materials Material Initial SRI 3 year SRI #209 white paint 103 102 #418 white paint 111 105 #425 white paint 109 101 #981 white paint 117 110 #982 white paint 108 102 304 stainless micro- textured surface 112 112 Solar Reflectance
- 17. 10 Year Aged SRI Measurements (ASTM E1980, Alternate Method) Site Aged Roof SRI Clean Standard SRI Pittsburgh, PA 111.6 111.7 Scottsdale, AZ 113.8 114.0 Bristol, RI 113.5 114.0 Solar Reflectance
- 18. Hydrophobicity/Soil Resistance Hydrophobicity/Soil Resistance Self-cleaning feature maintains performance of the radiant barrier with minimal maintenance.
- 19. Enhanced Acoustics Enhanced Acoustics Durability of textured acoustical panels delays replacement costs.
- 20. Perforated and Textured Stainless Steel Enhanced Acoustics
- 21. Enhanced Thermal Transfer • Up to 5x Heat Transfer • More Surface Area • Optimized Flows • Less Fouling Enhanced Thermal Transfer Increased thermal performance reduces energy consumption.
- 22. Vipertex® Enhanced Heat Transfer Tubes Enhancement is produced from a combination of: • Secondary flow generation • Increased turbulence • Boundary layer disruption • Increased heat transfer surface area • Increased number of nucleation sites Producing enhanced heat transfer performance for a wide range of conditions 2EHT 1EHT HB/EHT Copper Enhanced Thermal Transfer
- 23. Evaporation HTC of R22 in 1EHT as a Function of Flow Rate Vipertex® 1EHT Enhanced Tubes Smooth Tubes Enhanced Thermal Transfer
- 24. Fouling Resistance Fouling Resistance Enhanced surface designs delay tube replacement and maintenance.
- 25. Reduced Environmental Impact In Summary Green benefits of optimized metal surfaces: • Save energy and other resources • Recyclable • Centrally located proximity to sourced products • Long-lasting and durable • Reduced maintenance costs • Deterrent to vandalism and abuse • Self-cleaning increases product lifespan • Reduced weight • Less raw material consumption • Thermal & solar reflectance and heat island mitigation
Notes de l'éditeur
- Rigidized Metals stands apart as the leader in the development and manufacturing of engineered metal surfaces. Most engineers invest the time to understand various alloy systems and product forms that can contribute to their designs. While this is by no means a bad thing, the lesser understood field of surface engineering provides a great deal of opportunity to increase the service life, adaptability or performance of metal part installations. This puts more value creation in the hands of design professionals.
- Rigidized Metals created their place in metal surface engineering back in 1940 and since that time has maintained a commitment of continued development of metal surface technology.
- There are a number of design considerations where metal surfaces contribute substantially to metal applications. Your metal parts can be more rigid and stable, abrasion resistant, more dirt resistant and can manage heat more efficiently. If you are designing anything in metal take a moment to contact Rigidized to see what surface specifications makes sense for you.
- So, what is deep texturing? It is the movement of metal above and below the neutral axis (indicated by the red dotted line in the image). Deep texturing provides many material benefits to be further defined in the upcoming slides.
- Deep textured metals, regardless of alloy system provide improved impact resistance, buckling strength and tensile strength. Other considerations include redirection of stresses during forming operations which allow deep textured sheet-metal to curve more gracefully and exhibit less rippling or oil canning when installed.
- Rigidized Metals’ deep textures provide increased deflection compared to smooth sheet-metal, which goes along way to promote part stability. This chart illustrates the deflection performance of three deep textured metal patterns versus un-textured stainless steel. Deep textured metals (indicated by the blue, green and red lines) exhibit far less deflection than un-textured metals. This is a direct result of the additional structural rigidity added to the sheet material through the process of deep texturing.
- Deep textured metals, regardless of alloy system provide improved impact resistance, buckling strength and tensile strength. Other considerations include redirection of stresses during forming operations which allow deep textured sheet-metal to curve more gracefully and exhibit less rippling or oil canning when installed.
- Abrasion resistance can be improved through careful alloy selection. For example, coal and scrap shoots can benefit from the use of Hadfield steel, a material with exceptionally high hardness. Even without using a special alloy, deep textures go a long way to hide scratches by limiting their amount of surface area contact and channel them in ways to make them less visible in the first place.
- The deep textured patterns hide the appearance of scratches, dents and dings on these metal surfaces.
- Corrosion resistance is managed mostly through alloy selection, but finish selection can have a significant impact on the corrosion resistance of a metal service part. It is an important consideration that is often overlooked. Many applications can last indefinitely. If you are designing metal parts in corrosive service conditions, you might benefit from speaking to Rigidized Metals.
- Certain surface patterns lend themselves to chute applications where less surface contact between the metal and the product being processed takes place. If you are designing parts in this field, taking the time to contact Rigidized may prove very helpful. There are presumably applications were a combination of a deep pattern with a hydrophobic surface will optimize performance.
- Rigidized Metals produces uncoated surfaces that have very low glare and the deep textures diffuse light. The surfaces are less glossy than many paint finishes commonly used in architecture. If spectral gloss is something you need to manage in part design, we can help you determine a specification that will deliver the desired result.
- Molecules like to stick to other molecules. If a surface has very high bonded molecules, it has a lower tendency to attract other molecules and has low surface energy. Hydrophobic, or self-cleaning, surfaces are possible in stainless steel and titanium. While so far we have demonstrated that we can create self-cleaning buildings, there is a wider field of opportunity for metal applications that come in contact with aqueous solutions to promote cleanliness and reduce cleaning cycles.
- Acoustical panels can be made with very high performance ratings by simply adding a deep surface texture to an otherwise flat or perforated metal surface. Deep textured, perforated metal can meet both the demands of acoustics and add visual interest. Deep textured acoustical panels are comprised of perforated, deep textured metal, acoustical absorption material, and components for mounting. Deep textured acoustical panels can be installed in either ceilings or walls. A deep textured perforated metal panel with a 1” thick acoustical mat provides an NRC rating of .8.
- Rigidized has developed enhanced thermal transfer surfaces in a variety of alloy systems including stainless steel, copper and titanium for use in heat exchangers and other thermal applications. They are available in both flat rolled and tubing configurations. These designs have been produced through material surface modifications using optimization methods. With these enhanced surfaces, it is possible to achieve five times the heat transfer compared to smooth tubes.
- Increases Process Surface Area Interrupts the Development of the Boundary Layer Increases the Degree of Turbulence Generates Rotating Secondary Flows Promotes Single Phase Heat Transfer Promotes Boiling and Condensation Heat Transfer
- Increases Process Surface Area Interrupts the Development of the Boundary Layer Increases the Degree of Turbulence Generates Rotating Secondary Flows Promotes Single Phase Heat Transfer Promotes Boiling and Condensation Heat Transfer
- Fouling resistance of thermal transfer tubes has been studied with some impressive results. Hydrophobic surfaces promise to contribute here as well, but this is just now under study. Consideration should be given to these enhanced surface designs even in tube and tank applications that do not operate at elevated temperatures. In a recent crude oil fouling evaluation, it was shown that a heat duty increase (when compared to other tubes) of up to 19% was achieved when using Vipertex tubes. Additionally results have shown that in order to achieve the same heat duties, a flow rate reduction of up to 30 % could be utilized.
- Optimized metal surfaces save energy and other resources. Adding the benefits of recyclability and durability inherent in metals, we can help you contribute to a cooler, more efficient planet.