Leaders of NACE International and SSPC meet to discuss potential partnership
August 1, 2019 Source:
Leaders from NACE International, Houston, and The Society for Protective Coatings, Pittsburgh, recently convened in Houston to hold further discussions about options and approaches to combining the organizations to benefit the members of both. Deemed a success by NACE International President Terry Greenfield and SSPC President Garry Manous, the meeting led to multiple positive outcomes.
During the meeting, the participants from NACE and SSPC worked together to create a timeline for moving forward, with the goal of having a membership vote by the second quarter of 2020. In the meantime, both organizations will provide informational webinars and small group information sessions prior to the vote to enable members to have a thorough understanding of what is involved in any cooperative relationship between the two organizations.
The representatives from both organizations left the meeting optimistic and agreed to continuing regularly scheduled phone calls and a second face to face meeting later this summer. Mr. Manous and Mr. Greenfield agreed that they are encouraged by the way the integration team is prioritizing doing what is right for the industries and members served by NACE and SSPC.
Leaders from NACE International, Houston, and The Society for Protective Coatings, Pittsburgh, recently convened in Houston to hold further discussions about options and approaches to combining the organizations to benefit the members of both.
Continue readingHaynes Ni-Mo-Cr-W alloy designed for low thermal expansion at 1400°F in gas turbines
July 31, 2019 Source:
Haynes International, Kokomo, Ind., announces that it has new alloy data for Haynes 244, a new Ni-Mo-Cr-W alloy developed for static parts in advanced gas turbine engines that require low thermal expansion at temperatures up to 1400°F.
Alloy 244 offers a higher maximum service temperature than other low thermal-expansion alloys currently available, including a 100 to 200°F improvement over Haynes 242 alloy. The alloy is age-hardenable by formation of Ni2 (Cr,Mo,W) domains, which are structurally similar to the strengthening domains in 242 alloy. Judicious alloying with tungsten increased the thermal stability of these domains and lowered the coefficient of thermal expansion. Other important properties such as oxidation resistance and low-cycle fatigue performance are comparable to or better than those of the 242 alloy.
The 244 alloy exhibits very good oxidation resistance at temperatures up to 1400°F, and should not require protective coatings for continuous or intermittent service at these temperatures. The alloy is not specifically designed for service at higher temperatures, but can tolerate short-term exposures.
To view Haynes data, please click here.
Haynes International, Kokomo, Ind., announces that it has new alloy data for Haynes 244, a new Ni-Mo-Cr-W alloy developed for static parts in advanced gas turbine engines that require low thermal expansion at temperatures up to 1400°F.
Continue readingSteel Dynamics to invest $1.9 billion to build EAF flat roll steel mill in Texas
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Steel Dynamics Inc., Fort Wayne, Ind., announces that it has selected Sinton, Texas, as the site for its new state-of-the-art, electric-arc-furnace (EAF) flat roll steel mill, with construction to begin in early 2020. The current estimated required investment is approximately $1.9 billion, which does not include the benefit of anticipated state and local incentives.
Sinton is located approximately 30 miles Northwest of the port of Corpus Christi, within the targeted Southwest United States and Mexico market regions, bringing numerous advantages to the project. Final determination is still subject to the anticipated receipt of necessary permits and continued state and local government support, which the company expects to be forthcoming.
"We have been developing a flat roll steel business strategy for this region and Mexico for several years," says Mark. D. Millett, President and Chief Executive Officer. “Our planned new EAF flat roll steel mill will be the most technologically advanced facility existing today. Our team has selected a suite of technologies that should allow us to achieve steel grades previously out of reach to thin-slab casting technology. Based on casting capability of up to 84 inches wide and up to a 5.5-inch cast thickness, it will be the world's largest thin-slab facility.â€
The steel mill will also have a unique rolling mill configuration, providing the capability to produce Advanced High Strength Steel grades, including some energy-sector products not available in the United States today. The mill will also have the capability to produce up to 52.5 ton coils, creating meaningful cost efficiencies for certain energy customers. These advances will further reduce the gap between existing EAF and integrated steel mill production capabilities.â€
The project will include value-added finishing lines, including a galvanizing line with an annual capacity of 550,000 tons, and a paint line with an annual coating capacity of 250,000 tons. The product offering is anticipated to include various flat roll steel products, including hot roll, cold roll, galvanized, Galvalume® and painted steel, primarily serving the energy, automotive, construction, and appliance sectors.
Steel Dynamics Inc., Fort Wayne, Ind., announces that it has selected Sinton, Texas, as the site for its new state-of-the-art, electric-arc-furnace flat roll steel mill, with construction to begin in early 2020.
Continue readingZeiss adds ToF SIMS detection capability to Crossbeam 350/550 FIB-SEM microscopes
July 26, 2019 Source:
Zeiss, Germany, introduces advancements in analytics, tomography, sample preparation, and data integrity for its new Crossbeam 350 and 550 focused ion beam SEM microscopes, as well as new time-of-flight secondary ion mass spectrometry (ToF-SIMS) detection. (The image shows nanoforsterite, Mg2SiO4.) This brings new possibilities in engineering materials, energy materials, soft materials, and geosciences, covering megatrends in additive manufacturing, battery and photovoltaic research, building materials, and nanomaterials.
As part of the introduction of its new focused ion beam scanning electron microscope (FIB-SEM), the Crossbeam 350, Zeiss introduces enhanced workflows for 3D tomography to ensure class-leading 3D data volume generation. Quantified and calibrated measurement of z-slice thickness allows for near-perfect reconstruction of tomogram slices into a reconstructed volume. An update of the Atlas 5 hardware and software package improves 3D analysis (static electron backscatter diffraction (EBSD)), correlative workflows, and definition of slice thickness. This so-called “True Z technology†ensures high quality FIB-SEM tomography.
The new loading station and sample holder for transmission electron microscopy (TEM) lamella preparation brings more ease-of-use to the TEM lamella preparation workflow, and ensures a smooth transition of the sample to the TEM for further analysis.
High-speed and high-quality data acquisition are further complemented with a release of Zeiss ZEN Intellesis, a machine learning-based segmentation software. Crossbeam 3D datasets are fully compatible with this suite of image processing and segmentation software. This ensures that data integrity is maintained as data acquisition speed and quality are improved. Texture-based classification provided by this software enables previously hidden information to be extracted from samples ranging from fiber composites to reservoir rocks.
Zeiss, Germany, introduces advancements in analytics, tomography, sample preparation, and data integrity for its new Crossbeam 350 and 550 focused ion beam SEM microscopes, as well as new time-of-flight secondary ion mass spectrometry (ToF-SIMS) detection.
Continue readingBuehler’s AbrasiMet M cutter features 10- to 12-inch blades, enclosed cutting arm
July 25, 2019 Source:
Buehler, Lake Bluff, Ill., introduces the AbrasiMet M Medium abrasive cutter, a compact tabletop manual saw with a powerful 5.5 hp motor designed for heavy use. It has a sliding hood design, and can accommodate 10- to 12-inch blades inside a maximized cutter chamber space.
The casting is designed to be durable, with a corrosion-resistant steel T-slot table. The hood design is reinforced for repeated opening/closing, and the enclosed motor/cutting-arm system keeps debris and coolant out to maximize life of the motor.
Lab technicians can reduce cutting time and change blades easily without tools. In addition, cleaning the new high-capacity, 30-gallon recirculation tank is simplified with its nested tank and filtration screen design, complete with a rugged metal frame with wheels. The AbrasiMet M saves time in the sectioning process in busy production environments, allowing users to quickly move to the next steps of the preparation process.
In designing the AbrasiMet M, Buehler engineers:
Increased chamber space by locating the motor outside of the cutting chamber;
Optimized RPM settings for 10- and 12-inch abrasive blades to maximize cut quality;
Increased visibility by adding bright LED light strips;
Enhanced user ergonomics with adjustable cutting arm handle;
Ensured parallel cuts for difficult-to-vise parts with dual blade application; and
Improved cleanability with easy-access valve and washdown hose.
https://www.buehler.com/abrasimet-m-manual-abrasive-cutter.php
Buehler, Lake Bluff, Ill., introduces the AbrasiMet M Medium abrasive cutter, a compact tabletop manual saw with a powerful 5.5 hp motor designed for heavy use.
Continue readingHöganäs launches iron-based Rockit welding powders to combat impact/abrasive wear
July 24, 2019 Source:
Höganäs AB, Sweden, launches its new Rockit 606/706 welding powders, which prolong component lifetime in tough wear environments such as the oil & gas and mining & construction industries. The new welding powders feature a unique combination of high impact and abrasive wear resistance, and are robust to process variations. Rockit 606 is recommended for laser cladding, while Rockit 706 is the suitable choice for the plasma transferred arc (PTA) welding process.
“Rockit 606/706 are iron-based and have a martensitic structure with finely dispersed vanadium carbides,†says Hans Keller, President of Product Area Surface & Joining Technologies at Höganäs. “This combination provides excellent wear characteristics and a consistent high hardness, together with a good impact resistance. The materials have excellent welding properties and achieve a smooth deposit.â€
“Rockit 606/706 applied on wear plates for dozer blades during field tests showed that cladding material costs can be reduced by 30%, while maintaining the same lifespan achieved with other industry solutions,†says Martin Lohrman, application specialist at the Höganäs ArcX coatings center in Johnstown.
With this product launch, Höganäs adds new materials to the Rockit family, a series of specialty alloys to extend component lifetime. “We are building on the success of the previously launched Rockit 401 material, a sustainable solution to replace hard chrome plating. The material has quickly become a standard in the mining and construction industry,†says Mr. Keller.
Rockit is part of Höganäs’ extensive portfolio of surface coating solutions that grew rapidly through its acquisition of H.C. Starck’s Surface Technology division in 2018.
Höganäs AB, Sweden, launches its new Rockit 606/706 welding powders, which prolong component lifetime in tough wear environments such as the oil & gas and mining & construction industries.
Continue readingN2 and H2 cause different white-layer phase ratios during gas nitriding of iron and steels
July 23, 2019 Source:
Researchers from Solar Atmospheres, Souderton, Pa., will discuss the influence of nitrogen and hydrogen as diluting gases during nitriding of iron and low-alloy steels at the ASM International Heat Treat 2019 conference in October.
In many large industrial furnaces, atmospheric ammonia gas nitriding processes use nitrogen as the diluting gas for safety, economic, and environmental reasons. The widely published Lehrer phase diagram for ammonia/hydrogen gas nitriding of pure iron has been used as a reference guide for selecting ammonia/nitrogen mixtures for nitriding of alloy steels. However, when the diluting gas is not hydrogen, the diagram is not precise or accurate.
Recent R&D gas nitriding studies on pure iron powders indicate that the use of nitrogen as the diluting gas produces considerably different compound layer (white layer) phase ratios when compared to the standard Lehrer ammonia/hydrogen mixtures, according to XRD analysis. Current data reveals that nitrogen shifts the Lehrer diagram phase boundaries to the left. This is pertinent to the topic, as only the gamma prime phase (Fe4N) is desired, not epsilon (Fe2-3 N). Literature indicates that Fe4N has uniquely sought-after magnetic properties in some specialized industries.
Materials are currently being tested to compare the pure iron results to those obtained when nitriding common low-alloy medium-carbon steel.
Presentation title: “The Influence of Nitrogen versus Hydrogen Diluting Gas on the Compound Layer Phase Formation During Ammonia Gas Nitriding of Iron and Low Alloy Steels.â€
Authors: Dr. Virginia Osterman, Mr. Donald Jordan; Solar Atmospheres, Souderton, Pennsylvania. www.solaratm.com
Heat Treat 2019: 30th Heat Treating Society Conference & Exposition
October 15-17 in Detroit
Conference website: https://www.asminternational.org/web/heat-treat-2019/home
Researchers from Solar Atmospheres, Souderton, Pa., will discuss the influence of nitrogen and hydrogen as diluting gases during nitriding of iron and low-alloy steels at the ASM International Heat Treat 2019 conference in October.
Continue readingOne Minute Mentor: Quench problems that can affect through-hardening bearing steels
July 22, 2019 Source:
The 52100 steel is considered a low-alloy steel with modest hardenability, and the fine grain size due to aluminum carbonitride particles imparts increased toughness. However, the fine grain size also reduces hardenability.
The maximum section thickness of 52100 that can be fully hardened is about 19 mm (0.75 in.). If the maximum section size of a bearing is larger than this, or if the volume of work being quenched exceeds the heat extraction capacity of the quench, or if the transfer time from furnace to the quench is too long, then a slack quench condition occurs. This results in the formation of nonmartensitic transformation products (also known as dark etching constituent, slow quench product, and upper bainite). These appear as a distinct, dark constituent dispersed in the martensitic matrix.
The time temperature transformation (TTT) diagram for 52100 (Fig. 7) shows that a workpiece must be quenched rapidly to miss the bainite “nose†and avoid the formation of nonmartensitic transformation products in the martensitic matrix. Workpiece temperature must be below 450°C (840°F) in less than 10 seconds to preclude bainite nucleation and growth.
The dashed line in Fig. 7 represents a slack quench cooling rate that intersects the bainite nose. A rule of thumb is that if the hardness of an as-quenched sample is below 63 HRC, the presence of nonmartensitic transformation product or some other furnace issue is likely.
The graph shows the Time-Temperature-Transformation (TTT) diagram for 52100, austenitized at 860°C (1580°F) for ten minutes. The dashed line simulates a workload slack-quenched from the austenitizing temperature, intersecting the Bainite-start nose of the curve before reaching the martensite start (Ms) temperature, where it quenches to room temperature. The microstructure will contain a small amount of bainite in a martensitic matrix.
For more information, click on the link below (subscription required), then scroll down the Chapter Contents on the left of the page, and click on Quench problems that can affect through-hardening bearing steels.
https://dl.asminternational.org/handbooks/book/9/chapter/110017/Heat-Treatment-of-Bearings
The 52100 steel is considered a low-alloy steel with modest hardenability, and the fine grain size due to aluminum carbonitride particles imparts increased toughness.
Continue readingAccurate Brazing to invest $13 million to upgrade and expand heat treating operations
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Accurate Brazing, Greenville, S.C., a subsidiary of Aalberts N.V., announces that it will invest $13 million to expand operations in Greenville County by upgrading approximately 20,000 square feet of an existing facility to install a new world-class hot isostatic press. The press is designed to improve ductility and stress resistance of critical, high-performance manufactured materials. The project is expected to be complete in the second quarter of 2020.
Accurate Brazing is a full-service vacuum brazing and heat treating enterprise with almost 40 years in the business. Materials treated include stainless steel (300 and 400 series), superalloys (Inconel, A286, Rene 41, Waspalloy, Hastelloy, etc.), copper, refractory materials (moly, titanium, tungsten, and carbon steels).
The company specializes in end-cover, nozzle, and cartridge assemblies for fuel delivery systems. It processes heat exchangers, tube assemblies, medical implants, consumable welding products, and semiconductor equipment.
Certifications include ISO 9001:2015, AS 9100:2016 Rev.D, Nadcap, General Electric (GEAEBG, GEPS), United Technologies (Prefered Vendor Status), Pratt and Whitney (Aircraft Laboratory Controlled Source), and many more.
Accurate Brazing, Greenville, S.C., a subsidiary of Aalberts N.V., announces that it will invest $13 million to expand operations in Greenville County by upgrading approximately 20,000 square feet of an existing facility to install a new world-class hot isostatic press.
Continue readingSurface Combustion case depth calculators enable quick estimates from the shop floor
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Surface Combustion, Maumee, Ohio, introduces Surface Depths Calculators, which enable engineers and customers alike to complete quick, accurate calculations from the shop floor.
Case Depth Calculator provides a quick, back-of-the-envelope style estimate of case depth (or time to achieve a case depth) during carburization and carbonitriding by the saturation or boost/diffuse methods. It can also be used to estimate times for carbon restoration. The model is based on work by F.E. Harris.
Carbon Calculator calculates the carbon potential of an atmosphere based on the carbon monoxide level, the carbon dioxide level, and the furnace temperature. These readings may come from instruments such as infrared controllers or three-gas analyzers.
Dewpoint Calculator calculates the carbon potential of an atmosphere based on the dewpoint of the furnace atmosphere, the carbon monoxide (CO) level, the hydrogen (H2) level, and the furnace temperature. These readings may come from instruments such as dewpoint analyzers.
S-1 Oxygen Probe Calculator calculates the carbon potential of an atmosphere based on the millivolt signal from an oxygen probe, the carbon monoxide level, and the furnace temperature. Two types of oxygen probes may be selected: a Surface Combustion S-1 Oxygen Probe or a generic oxygen probe.
Kn Calculator calculates the nitriding potential (Kn) of an atmosphere based on the flows of ammonia, nitrogen, and hydrogen into the furnace, the furnace pressure, and either the reading from the thermal conductivity hydrogen probe of the ammonia dissociation ratio (α) as given by an ammonia burette.
Surface Depths can be found on both the Apple App Store and on Google Play. If you would like more information on how to apply these calculations to your operations or if you have suggestions of other calculators that might be helpful, please email us at [email protected].
Surface Combustion, Maumee, Ohio, introduces Surface Depths Calculators, which enable engineers and customers alike to complete quick, accurate calculations from the shop floor.
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