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voda 22 maart 2023 06:28

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AFV Beltrame Launches Chalibria in France

On March 9th, LME Beltrame Group launched their new carbon-neutral steel brand, #Chalibria, during a round table event called "Steel: the new frontiers of sustainability" in Paris. The event featured insightful discussions with notable individuals such as Mr. Bruno Jacquemin, Managing Director of A3M and permanent delegate of the CSF Mine et Métallurgie, Ms. Anaïs Voy-Gillis, associate director at June Partners and associate researcher at the IAE of Poitiers, Mr. Ambroise Lecat, specialist of the steel market and partner at Roland Berger, and Mr. Carlo Beltrame, Managing Director of LME Beltrame Group. The event was moderated by journalist and entrepreneur, Ms. Capucine GRABY.

In addition to launching #Chalibria, the event was also a platform for LME Beltrame Group to present their sustainability strategy, including their commitment to carrying out decarbonization projects and communicating transparently with all stakeholders.

Chalibria takes its name from the Latin word chalybs, meaning iron. This name pays homage to the ancient blacksmiths of Anatolia who were credited with inventing steelmaking. The name Chalibria also represents the balance that the brand seeks to achieve between steel production and environmental sustainability, as it is constructed with the Latin term libra, meaning balance.

AFV Beltrame Group's commitment to environmental sustainability is evident in its emissions reduction efforts. Compared to the steel industry average and the European average for electric furnace steel, the Group's emissions are significantly lower. In 2021, the Group's emission intensity for Scope 1+2+3 (upstream) for melting shop and rolling mill was only 0.57 metric ton CO2 per finished product steel. However, the Group has set a target to further reduce its carbon footprint by 40% for both Scope 1 & Scope 2 emissions.

To ensure the accuracy and reliability of its carbon footprint reporting, AFV Beltrame Group's calculations are verified by an independent certification body, RINA, in accordance with ISO 14064-1. Customers of Chalibria receive a certificate issued by RINA, which serves as proof of the brand's carbon neutrality and includes information about the reference project of the carbon credits used for offsetting, as well as verification conformity issued by RINA in accordance with PAS2060 certification.

To ensure the traceability, integrity, and transparency of data along the value chain cradle to gate for Chalibria, AFV Beltrame Group uses RINA's DIAS platform. This digital platform supports audit activities and provides a comprehensive overview of Chalibria's carbon footprint. By using internationally recognized standards and independent third-party verification, AFV Beltrame Group is demonstrating its commitment to providing accurate and trustworthy information about its environmental impact.

voda 22 maart 2023 06:29

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Hyundai Steel Contemplating Leaving Russia

It is being suggested that Hyundai Steel may exit its Russian subsidiary following its departure from Beijing, China. The suspension of Hyundai Motor's Russian plant due to the ongoing war between Russia and Ukraine is the reason behind the move, says Business Korea

According to sources in the industry, Hyundai Steel Russia's Steel Service Center has stopped operating. The SSCs sell automotive steel sheets to Hyundai Motor and Kia Corp's overseas production plants. Hyundai Steel builds SSCs near Hyundai Motor's overseas production plants to ensure a supply of steel sheets. The prolonged shutdown of Hyundai Motor's Russian plant has also led to the possibility of Hyundai Steel withdrawing from its Russian subsidiary. The St. Petersburg plant began operations in 2010 with an annual production capacity of 200,000 units. It has been closed since March last year.

Hyundai Steel has suspended its Russian subsidiary's operations but denies that it is considering a withdrawal. The Korean steelmaker is expected to decide whether to restart or sell its Russian subsidiary once Hyundai Motor's future in Russia is determined.

In addition to the suspension of its Russian subsidiary, Hyundai Steel is currently in talks to sell its Beijing subsidiary, Hyundai Steel Beijing Process, in China. The sale is expected to be concluded in the first half of this year, as Hyundai Motor's and Kia Corp's sales continue to decline in China. Hyundai Motor's market share in China has fallen from 3.4% in 2018 to 1.8% in 2021, leading to a net loss of $38 million for the Beijing subsidiary in 2021.

voda 22 maart 2023 06:29

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ACRE Hikes Offer to Buy SBI Debt of Visa Steel

Asset Care and Reconstruction Enterprise, backed by Ares SSG Capital, has submitted a revised binding offer to the State Bank of India (to acquire the loans given to Visa Steel, in the face of increased competition from other asset reconstruction companies making counteroffers, reports Economic Times, citing sources.

According to sources, ACRE’s improved offer of ?243 crore is up from its previous offer of ?230 crore, while the original offer had triggered a Swiss challenge auction. However, Asset Reconstruction Company of India (Arcil), backed by Avenue Capital, also approached Visa Steel lenders with a conditional offer of 40 paise on a rupee. In response, SBI asked ACRE to submit a better offer.

SBI, Canara Bank, Punjab National Bank and Union Bank of India collectively hold 77% of the total loans to Visa Steel. If the revised offer is accepted, SBI will hold a Swiss challenge auction.

Visa Steel was admitted for insolvency last November, and any asset reconstruction company that acquires the debt would require at least 66% of the debt to control the debt resolution process.

voda 22 maart 2023 06:30

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Rungta Mines Two High-Speed Rebar Mills from Danieli

Rungta Mines has reaffirmed its commitment to its growth strategy by selecting Danieli technology to supply two high-speed bar mills. The mills will be located in the Chaliyama industrial area in Jharkhand, India, and will produce a total of 1 million metric tons per year of rebar ranging from 8 to 40 mm in diameter. The mills will be supplied with twelve-meter-long, 130-mm square billets, which will be delivered directly from the on-site casters through a 160-meter-long hot-charge system, eliminating the need for billet reheating and reheating furnaces. This will result in significant savings in capital and operational expenditure, as well as a reduction in carbon emissions.

The mills will consist of 12 housing less stands and an eight-pass fast-finishing block, providing the high speed required for the process. The Danieli Bar Quenching system (QTB) will provide in-line heat treatment of the bars, reducing the addition of micro alloys during the melting process and lowering overall transformation costs.

The mills will also be equipped with bar counters, allowing for greater flexibility in response to market demand by enabling the selection of the desired number of bars for each bundle. The Danieli yard management system will optimize bundle yard space, track and store produced materials, and streamline the shipping process.

The two new wire rod mills are scheduled to begin operation in the third quarter of 2024, following the revamping project of wire rod lines awarded to Danieli in 2021.

voda 22 maart 2023 06:30

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German Crude Steel Production in February 2023 Shrinks 7% YoY

According to a recent report by the German steel association, WV Stahl, the total crude steel production in Germany for February 2023 was 2.023 million metric tons, representing a decrease of 7% compared to the same month in the previous year. This decline can be attributed to a sharp decrease in electric steel production, which fell by almost 11% to 0.95 million metric tons.

This decline in crude steel production is likely due to a combination of factors, including lower demand for steel, supply chain disruptions, and rising costs of raw materials and energy. The ongoing COVID-19 pandemic and its impact on global trade and supply chains may also be contributing to the decline in steel production.

The decrease in electric steel production is particularly notable, as electric steelmaking has become an increasingly popular method of production due to its lower carbon footprint compared to traditional blast furnace steelmaking. It is possible that the decline in electric steel production is due to disruptions in the supply of electricity or raw materials, or to the increasing costs of electricity or other energy sources.

Despite these challenges, the German steel industry remains a significant player in the global steel market, and is known for its high-quality steel products and advanced manufacturing technologies. The industry is likely to continue to face challenges in the coming months, but is also likely to adapt and innovate in order to maintain its position as a leader in the global steel market.

voda 22 maart 2023 06:30

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A&M Files Winding-Up Petition against Aartee Bright Bar

Insolvency practitioners at Alvarez & Marsal have filed a winding-up petition against Aartee Group Holdings Limited and applied to be appointed as administrator to Aartee Steel Group, just weeks after Mr. Sanjeev Gupta's GFG Alliance acquired the companies. A&M is also handling the administration process of Aartee Bright Bar, which is owed nearly £14m by the two companies Sky News learns. . A&M has already told Aartee Bright Bar employees that creditors could be repaid in full if the £13.7 million debt is repaid.

Last month, Mr. Gupta's GFG Alliance conglomerate, which trades under names including Liberty Steel in the UK, acquired both Aartee Bright Bar and Aartee Bright Bar Property. The group's business plan involves integrating Aartee's operations into its Liberty Steel brand in order to preserve 250 UK steel industry jobs. However, GFG's attempt to overturn the administration of Aartee Bright Bar & Aartee Bright Bar Property was recently rejected by a court.

In response to the situation, Mr. Jeffrey Kabel, Chief Transformation Officer at GFG, stated, "Our plan for ABB would protect jobs and provide superior outcomes for its creditors immediately. We believe that the administration process at ABB is unjustified, unnecessary, and unsupported by a majority of its creditors and employees, whose livelihoods are at stake. We urge creditors, employees, and stakeholders to support our application to save ABB."

Aartee Bright Bar is owned by Mr. Ravi Trehan, who was a former director of UK steel producer Liberty Steel Newport, other Liberty companies, and several entities closely linked with the Gupta Family Group Alliance. Additionally, Mr. Trehan previously held a minority stake in Liberty Commodities. Mr. Gianpiero Repole, who was formerly the director of Liberty Commodities and the business development manager at GFG, resigned from his position as chief executive of Aartee Bright Bar in August 2022.

voda 22 maart 2023 06:31

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STILFOLD Could Make Heavy Transportation Greener

Swedish technology and design startup STILRIDE has developed a sustainable manufacturing technology called STILFOLD, which employs robotic arms to fold steel over curves to create light and strong structures with minimal components. Currently, the company is using the technology to build a fleet of sustainable steel electric motorbikes, which can reduce the environmental impact of electric vehicle production by up to 50%.

To reach this estimate, STILRIDE's design team created an "origami" exoskeleton using origami-inspired steel folding, reducing the trailer's total weight and simplifying its construction. The STILFOLD trailer requires 90% fewer component parts and can be constructed using 30% fewer materials, weighing an estimated 2000kg less than traditional semi trailers, weighing in at 6000kg. The design aimed to simplify elements and use fewer materials while retaining structural integrity, thus reducing fuel consumption and enabling HGVs to carry heavier loads. Researchers analyzed Swedish transportation data, with a focus on the construction and mining sector, to determine the impact of the design.

In the mining and construction sector, each journey typically has an average 22 metric tons maximum load limit. According to STILRIDE, at least 50% of these journeys are made using a HGV or LGV with a trailer attached, with 60-70% of the load capacity enabled by the trailer. This means that approximately 48 million metric tons of materials are transported annually by trailer in this sector. If just 50% of the 7.346 million yearly journeys within the mining and construction sector gained 2 metric tons of load capacity each year, this would create a load increase of 7.346 million metric tons, representing 5% of the total yearly tonnage transported within the mining and construction sector in Sweden.

By using the STILFOLD trailer and achieving this load increase, STILRIDE estimates that around 360,000 heavy load journeys could be prevented each year, which in turn would prevent 12,000 metric tons of CO2 from entering the atmosphere annually.

voda 22 maart 2023 06:31

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APL Apollo & Ornate Solar Join Hands to Embrace Sustainability

India’s leading provider of tubular solutions APL Apollo Tubes and Ornate Solar have entered into a strategic partnership to develop and manufacture structural solutions for the solar industry in India. This partnership will combine the expertise of both companies in structural steel engineering and solar energy to build integrated energy solutions, providing a new outlook to sustainable construction.

APL Apollo's investments in Direct Forming Technology allow them to manufacture customized rectangular steel sections, which can be engineered to save building costs by up to 15% and enable 3 times faster construction for infrastructure projects. With its focus on continuous innovation, APL Apollo has captured 55% of the market share for Steel tubes across India.

The APL Apollo Ornate InRoof, India's first Integrated Solar Roofing solution, was unveiled at the Nayi Soch Steel Building Solutions conference held in Bangalore. This patented assembly can transform conventional solar panels into the primary roof for industrial sheds and commercial buildings, apart from roof-integrated photovoltaic systems.

The venture expects to generate ?2,500 crores in revenues by FY27 and create employment opportunities for about 250 engineering graduates. It will operate from the National Capital Region and house an innovation hub, a design center for advanced technologies, as well as manufacturing facilities in other parts of India.

voda 22 maart 2023 06:31

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Tenova is Supply Electric Arc Furnace for Tenaris’s Campana Mill in Argentina

Tenova, a leading provider of sustainable solutions for the metals industry's green transition, has secured a contract to supply Tenaris, an Argentina-based steel pipe manufacturer, with an Electric Arc Furnace (equipped with Consteel® and Electromagnetic Stirrer Consteerrer® for its Campana mill. The new Consteel® EAF will replace one of the existing EAF units and offer the same productivity as both existing units combined. It will also guarantee the production capacity of 950,000 metric tons of liquid steel for seamless pipe manufacturing. Tenova's scope of work includes the Consteerer® technology, an innovative electromagnetic stirring system, and its engineering services.

The Consteerrer® technology has been developed in an exclusive worldwide partnership with ABB and provides superior quality steel, extremely reliable and safe operations, and significantly low operating costs. It enhances the Consteel® Evolution process with ABB's ArcSave® non-contact electromagnetic stirring of the furnace's liquid bath and can be customized to meet the different EAF process steps' requirements.

The project has been designed to minimize Tenaris' overall investment by maintaining the existing facilities and plants and improving the technological solutions and innovations of the one existing EAF still in operation. Due to the specific design of the proven Consteel® technology, the current fume treatment plant will continue to be used without significant changes. Similarly, the water treatment system will not require modifications. The layout of the Consteel® conveyor will fit the existing facilities such as the scrapyard and bucket car, and the new EAF will use the same charging mix as the existing furnace.

voda 22 maart 2023 06:31

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Reibus to Close Dubai Office, Argus

According to sources, Reibus, an online metals marketplace, is reportedly closing its Dubai office and making cuts in other areas to conserve cash, reports Argus. Reibus had recently hired additional staff for its Dubai office to increase its trading business and has been providing financing to other parties. However, the company has been financing some deals with cash due to a tough funding environment, and its deposits with Silicon Valley Bank, which collapsed, had an impact on the company. Reibus declined to comment on the reported measures, adds report

Reibus is an online metals marketplace that connects buyers and sellers of various metals, including carbon steel, stainless steel, and aluminum. The company was founded in 2016 and is headquartered in Atlanta, Georgia. It operates with the aim of providing a transparent and efficient way for metal buyers and sellers to conduct business. Reibus raised $75 million in its series B funding round led by SoftBank, valuing the company at $750 million, but it has not yet conducted a series C funding round.

Reibus has recently faced financial challenges, and has reportedly closed its Dubai office and made cuts elsewhere in an effort to conserve cash. The company has also been providing financing to other parties amid a tougher funding environment, and has been affected by the collapse of Silicon Valley Bank, where it had deposits. Reibus is also a creditor to Aartee Bright Bar, a UK-based bright bar producer and distributor that was recently acquired by Liberty Steel.

voda 22 maart 2023 06:32

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GPH Ispat Launches High Grade Steel Rebar

On 20 March 2023, GPH Ispat Limited, one of Bangladesh's leading steel manufacturers, launched its new high-grade steel rebar product that aims to reduce construction costs and enhance the safety of structures, reports The Daily Star. The GPH Quantum B600D-R steel rebar is the first of its kind in the country and was launched within just over four months of another new product, the GPH Quantum B600C-R steel rebar. The steel was unveiled at a seminar titled "Countries only high strength and high performing steel GPH Quantum B600 C-R & B600 D-R" attended by around three hundred engineers and architects at Radisson Blu Chattogram Bay View.

According to Mohammad Almas Shimul, GPH Ispat's Additional Managing Director, the two higher grade products will bring drastic changes in the country's construction sector. The launch event included a presentation by Padma Bridge Project Technical Team Leader and renowned structural engineer Professor Shamim Z Basunia, who said that the products tested in Bangladesh University of Engineering and Technology (Buet) would reduce the size of the column section in building construction, leading to an increase in the floor area and the capacity to carry permanent and chronic loads.

The two products are the result of a long-term collaboration between Buet and GPH Ispat, according to Raquib Ahsan, a professor of the civil engineering department at Buet. He said that the high-grade products provide higher strength and better performance compared to the existing steel grades of 420 and 500 that are available in the country's market. These products will not only reduce steel consumption and total project costs significantly but also have a bigger impact on reducing environmental pollution.

GPH Group Chairman Mohammad Jahangir Alam highlighted that GPH has installed the world's latest and most modern technology of quantum electric arc furnace in its plant, which has the capability to produce 600 and higher grade steel products. He added that the use of their steel will help save hard-earned foreign currency. This new innovation is expected to bring drastic changes to the construction sector in the country, while overall safety has been a top priority.

voda 22 maart 2023 06:32

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TimkenSteel Joins Steel Manufacturers Association

The North American Steel Manufacturers Association has announced that TimkenSteel, a provider of high-quality specialty steel, has joined the association and that its President and CEO, Mr. Mike Williams, has been appointed to SMA's board of directors. Mr. Williams stated, "We believe SMA shares our vision that the enduring power of steel makes the world a better place. We look forward to partnering with our fellow SMA member companies to pursue smart policy on trade and regulation while strengthening the American steel industry's global leadership in sustainability and environmental justice."

Founded in 1917 and established as a standalone public company in 2014, TimkenSteel has an annual melt capacity of 1.2 million short tons and serves various sectors, including mobile, industrial, and energy, with a focus on electric vehicle, defense, and renewable applications. The company operates steelmaking facilities in Canton, Ohio, manufacturing facilities in Eaton, Ohio, and Columbus, North Carolina, and a distribution center in Mexico, and it employs 1,700 people.

SMA is the largest steel industry trade association in the United States and represents North American EAF (Electric Arc Furnace) steel producers, who account for over 70% of domestic steelmaking capacity.

voda 22 maart 2023 06:32

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HUD Applies Buy American Steel Provisions toFFA

US’s Housing & Urban Development Department has issued a notice stating that it has granted a public interest waiver of the Buy America Domestic Content Procurement Preference for recipients of Federal Financial Assistance under the Build America, Buy America Act.

In addition to this, HUD is also announcing its BAP implementation schedule for all HUD FFA used for the purchase of iron or steel products in infrastructure projects in HUD programs, excluding the CDBG formula grants addressed in the November 23, 2022 waiver. Furthermore, HUD is announcing its BAP implementation schedule for the purchase of specifically-listed construction materials, which include non-ferrous metals, lumber, composite building materials, and plastic and polymer-based pipe and tube. This also covers all manufactured products and other construction materials.

voda 22 maart 2023 06:32

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SUSU Researchers Develop Model for Optimal Welding Parameters

Scientists from South Ural State University have identified key parameters that affect the quality of welding, and how different characteristics of the technological process relate to welding seam quality. Based on their findings, they developed a mathematical model to select optimal welding parameters. The study was published in The International Journal of Advanced Manufacturing Technology. Senior Research Fellow Zhao Dawei, who works at the SUSU Department of Welding Production Technology and Equipment and is a Ph.D. in Mechanical Engineering, Associate Professor of the School of Mechanical Engineering at Linyi University in China, is leading research into improving the quality of welding of weathering steel.

Weathering steel is a type of high-strength low-alloy steel with low carbon content and small amounts of other alloying elements such as aluminum, titanium, and copper. According to Zhao Dawei, this type of steel combines excellent strength, ductility, formability, and weldability, and provides improved atmospheric corrosion resistance. It's used in building oil pipelines, bridges, ships, and buildings. The quality of welding for weathering steel, such as A606, is especially critical in the production of welding structures like boilers, tanks, and oil pipelines.

In the study, SUSU scientists examined different combinations of welding parameters and evaluated the quality of welding seams. "We studied the effects of certain welding variables, such as welding speed, welding current, and wire feed speed, on the geometry of weld beads and their tensile properties," said Zhao Dawei. "We identified microstructure characteristics in different technological parameters of welding and analyzed the correlation between welding parameters and quality indicators. After calculating optimal welding parameters, we validated them to achieve high-quality welding seams. The quality of welding seams improves with optimal welding parameters.”

Various welding parameters, including voltage, welding speed, welding current, shielding gas, wire feed speed, wire type, and diameter, affect the physical and mechanical properties of welding seams. Incorrect welding parameters can lead to unavoidable defects that negatively affect welding quality.

This project began in 2021. Previous research has shown that welding heat input has a strong influence on the quality of welding and is determined by the welding process parameters.

voda 22 maart 2023 06:33

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Gazprom Tests High Strength OMK Pipes at Transgaz Yekaterinburg

Russia’s leading pipemaker United Metallurgical Company OMK was the first in Russia to produce high-strength large-diameter pipes made of steel of strength class K70, which fully comply with the requirements of Gazprom for the construction of main pipeline systems with operating pressures up to 14.7MPa. The pipes were made from their own rolled products at the Vyksa plant of OMK in the Nizhny Novgorod region. Pneumatic tests of pipes were successfully carried out at the experimental test site of Gazprom Transgaz Yekaterinburg in Kopeysk in Chelyabinsk region.

OMK developed the new pipes as part of a program of scientific and technical cooperation to meet Gazprom's long-term requirements. These pipes have a higher strength class than those used today in the gas industry, and are designed for the construction of gas pipelines with an operating pressure of about 150 atmospheres, which is 30-50% higher than most of the existing gas transmission lines.

For the tests, OMK supplied pipes with a diameter of 1420mm with a wall thickness of 26.3mm. At the Gazprom Transgaz Yekaterinburg test site, they were welded into a 200 meter whip, which simulates a real gas pipeline. The ends were closed with power plugs, and air was pumped inside at a pressure of 165 atmospheres, installing a set of equipment for monitoring pressure, temperature and a number of other parameters. In the center of the whip, an initiator coil with a shaped charge was placed to create an initiating crack, since the main destruction of the pipeline is caused by compressed air. OMK's products have shown resistance to prolonged destruction, in which the rupture of one pipe leads to the failure of a long section of the gas pipeline.

voda 22 maart 2023 06:34

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Nucor Warehouse Systems Unveils Closed Loop Sustainability

On 20 March 2023, Nucor Warehouse Systems announced the launch of its latest corporate responsibility and sustainability initiative, Closed Loop Sustainability. As the sole provider of a true recycling program for rack systems, Nucor Warehouse Systems has created a program that allows customers to achieve their sustainability goals by reducing the need to source new steel. When a warehouse requires retrofitted rack systems, Nucor Warehouse Systems can dismantle and recycle the existing rack, then use the resulting materials to engineer and install a new rack system, with all steps of the process overseen by Nucor Corporation, North America's largest steel manufacturer.

The Closed Loop Sustainability process operates in four steps:
•Extract: Dismantle existing/old rack
•Process: Melt old rack into raw material
•Reform: Produce stronger, safer rack
•Install: Close the recycling loop and achieve sustainability

Nucor Warehouse Systems is part of Nucor, North America's largest steel recycler, with 75.4% of its products made from recycled content. Nucor is also a leader in sustainability, with greenhouse gas emissions from its steel mills just 25% of the global average. Additionally, Nucor is the seventh largest corporate buyer of renewable energy in the United States. Nucor Econiq is the world's first net-zero carbon steel at scale, designed to provide emissions-free steel products to help support sustainability goals.

Leveraging its national manufacturing and distribution capabilities and vast resources from Nucor companies, Nucor Warehouse Systems designs, plans, manufactures, and builds the most exceptional warehouses in North America.

voda 22 maart 2023 06:35

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Researchers Study Effect of Heat Treatment on Duplex Stainless Steel

In a recent study, the effects of post-heat treatment atmosphere on the microstructure and corrosion resistance of duplex stainless steel welded joints were examined by a team of scientists from Suez University and the Central Metallurgical Research and Development Institute Cairo and published findings in Nature. The study found that post-weld heat treatment (PWHT) enhances the grain refining and increases the austenite fraction in the weld zone and heat-affected zone (HAZ). Protective gases such as nitrogen and argon were used during the heat treatment, with nitrogen resulting in the formation of nitride precipitates.

The study also found that a decrease in ferrite volume fraction in post-weld heat treated samples compared to welded samples without heat treatment leads to an enhancement of corrosion resistance. However, using nitrogen as a heat treatment atmosphere resulted in decreased corrosion resistance of weldments due to nitride precipitates. The study also found that there was a significant drop in ultimate tensile strength and ductility after PWHT, especially when using air and nitrogen as heat treatment atmospheres. Higher Vickers hardness values were observed for HAir and HNitrogen welded joints, possibly due to nitride precipitates. The study concluded that PWHT is not recommended for duplex stainless steel weldments if mechanical properties are of great importance, but it is preferable to perform PWHT if chemical properties and corrosion resistance need to be improved. The study also highlights the importance of selecting the appropriate welding electrode in controlling the microstructure of the welding area and thus the properties after welding.

Duplex stainless steel (DSS) is a highly durable and reliable material for use in harsh environments. Its composition and alloying elements distribution make it resistant to corrosion and provide high strength. The ferrite and austenite volume fractions of DSS are influenced by the chemical composition and processing factors such as annealing temperature, cooling rate, solidification, and heat input. The precipitation of harmful intermetallic phases such as sigma (s) phase, chi (?) phase, secondary austenite (?2), nitride (CrN and Cr2N), and carbides (M23C6) can also be affected by these factors. Therefore, it is important to carefully control the processing of DSS to ensure optimal performance in severe environments such as deep-sea pipelines, seawater desalination, reactors, petroleum tanker, oil refinery chemical and petrochemical industries.

The welding process is a crucial aspect of many industrial processes. It involves a heat treatment that results in three distinct zones: the base material (BM), the heat affected zone (HAZ), and the weld zone. In the case of duplex stainless steel (DSS), these three zones exhibit varying chemical compositions of ferrite and austenite phases, which can lead to differences in corrosion resistance. It is important to note that the welding process not only affects the chemical composition, but also the volume fraction of ferrite due to the heat. Furthermore, Nilsson has suggested that multi-pass welding may result in an excessive amount of secondary austenite, ultimately leading to lower corrosion resistance in the weld zone.

In addition to the factors mentioned earlier, the selection of the welding electrode is crucial in controlling the microstructure of the welding area, which in turn affects the properties after welding. Khan et al. investigated the effect of filler metal on solidification, microstructure, and mechanical properties of the dissimilar weld between super duplex stainless 2507 and high strength low alloy API X70 pipeline steel. They observed that the microstructure of the 309L filler weld is composed of skeletal ferrites in the austenite matrix, while the 2594 filler weld has multiple reformed austenite embedded in the ferrite matrix. Similarly, Ramkumar et al. investigated the weldability, metallurgical and mechanical properties of the UNS 32750 super-duplex stainless steels joints by Gas Tungsten Arc Welding (GTAW) employing ER2553 and ERNiCrMo-4 filler metals18. They recommended the use of ER 2553 for welding super-duplex stainless steel due to the enhancement of mechanical properties of welded joints compared to those using ER NiCrMo-4. They attributed this improvement to the presence of sufficient amounts of ferrite and allotriomorphic and wedge-shaped widmanstätten austenite, as well as intergranular precipitates in the weld zone when using ER2553.

The Science, Technology & Innovation Funding Authority (STDF) in collaboration with The Egyptian Knowledge Bank (EKB) provided open access funding. Specifically, the funding was granted by STDF, which is part of the Egyptian Knowledge Bank.

voda 22 maart 2023 06:35

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Kunming Iron & Steel Starts Receiving Iron Ore from Laos

China Baowu’s Kunming Iron & Steel Group recently welcomed the first special freight train carrying 1,600 metric tons of Lao iron ore from Vang Vieng Station in Laos. The train, which was operated by CIMC Intermodal Development, marks the first time that Kunming Iron & Steel Co has imported iron ore from Laos in this way. Going forward, a significant amount of Laos iron ore will be transported to Kunming Iron & Steel plant area via the China-Laos Railway on a regular basis, helping to reduce logistics costs for the company.

This development means that Laos's mines will be integrated into Kunming Iron & Steel Group's supply chain through multimodal and cross-border transportation. The entire logistics process, from packing and signing to supervision, customs declaration, and transshipment, will be streamlined, enabling seamless execution of transportation plans.

Compared to previous methods, this transportation system will increase efficiency by nearly 50%. In addition, the station-to-door mode adopted for iron ore transportation, from Vang Vieng Station in Laos directly to the stockyard in the new area of Kunming Iron & Steel Group, will eliminate intermediate links, reduce business risks, and build an economical and fast transportation network.

voda 22 maart 2023 06:35

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Iron Ore Alliance Celebrates 10 Years

On 21 March, the United Steelworkers and US Steel marked the 10-year anniversary of their partnership, the Iron Ore Alliance, says WDIO. Co-chairs Mr. John Arbogast from the USW and Mr. Chris Masciantonio from US Steel expressed their gratitude to be part of the alliance, emphasizing its significance. Mr. Arbogast explained that their collaboration goes a long way in winning support from legislators both in the Iron Range and in the cities, noting that the alliance is unique in the entire country.

While USW & US Steel may not always see eye to eye, the alliance works together on important issues like the environment, permitting, and supporting the workforce and communities in the Range. Education is also a focus, with the alliance testifying about bills in the legislature to help others understand the industry.

voda 22 maart 2023 06:35

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Richmond Steel Recycling Appeals BC Order on Pollution Charges

A recycling company in Richmond, British Columbia in Canadad is currently in a legal battle with the British Columbia government over accusations that it discharged excessive amounts of heavy metals and PCBs into the Fraser River, says The Vancouver Sun. Richmond Steel Recycling, owned by Nucor Corp and Sims, has appealed a provincial order to stop effluent discharges from its Mitchell Island site to the environment. The two-week hearing will take place at the end of May.

According to the province, the company's own records and testing by the Environment Ministry showed that heavy metals such as copper and zinc, as well as PCBs, had been discharged into the environment at levels that exceeded British Columbia water quality guidelines. As a result, the province issued a pollution stoppage order, noting that the company had no authorization to discharge pollutants to the environment, which is required under British Columbia law. The periodic water run-off from the company’s recycling site was directed to a bioswale and into a ditch that empties into the north arm of the Fraser River.

Richmond Steel appealed the order, stating that it had made improvements and had started using a treatment facility to reduce metal and PCB levels. The company argued that the order was unreasonable and not based on current information. The company also claimed that consultants hired by the company discovered that the bioswale and ditch had become contaminated by the historical accumulation of sediments from the recycling site and that those sediments could be carried by storm water into the Fraser River. The company is currently applying for a long-term permit from the Environment Ministry to allow it to discharge to the Fraser River.

The company is also appealing the rejection of its application for a temporary discharge permit. According to appeal documents, the company has a plan to remediate the bioswale and ditch by removing and disposing of the accumulated contaminated sediments, which would cost about C$3 million. The company also noted that removing an estimated 40,000 cubic meters of storm water from the facility would cost more than C$10 million a year.

Metals and PCBs can be harmful to humans, animals, and fish, and are deemed a probable human carcinogen, according to Environment Canada. PCBs have been banned in Canada since 1977, although some equipment that contains PCBs remain in use.

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