A ‘green’ Seco/Warwick vacuum furnace for wind power plants

Seco/Warwick, Meadville, Pa., has been chosen by a recognized manufacturer of wind power plants to deliver a vertical vacuum furnace designed to perform low-pressure carburizing for the large structural elements (gearboxes) used in wind power plants. 

The solution on order combines the advantages of two technologies: atmospheric and vacuum processing. The furnace is designed for low-pressure carburizing oversized parts, made possible due to a very large, vertical heating chamber, while the furnace pit structure saves space in the production facility. The Pit-LPC technology is a modern alternative to atmosphere carburizing. Its main advantage is the ability to carry out efficient and effective carburizing in a much shorter time than in atmospheric furnaces. The vacuum processing solution provides more than twice the productivity, and consequently lower process costs and a quick investment return.

The main advantage of this furnace is the ability to open the furnace at process temperature at the end of the cycle. This is the advantage of atmospheric furnace technology implemented within a vacuum furnace. This type of solution combines the advantages of an atmospheric furnace with the advantages of a vacuum furnace, which include: elimination of the oxidation effect at the grain boundary, process purity, and heating uniformity. The product solves the problem of high energy and process gas consumption by the partner’s old furnaces, and shortens the carburizing process, which significantly improves efficiency and production costs.

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Lindberg/MPH ships mesh belt conveyor furnace for use with powdered metal

Lindberg/MPH, Mich., has announced the shipment of an electrically heated, full muffle, mesh belt conveyor furnace. This furnace is designed for treating pressed powdered material.

The furnace is designed for applications with a maximum process temperature of 1000° C (1832° F) that utilize a nitrogen or clean dry filtered air process atmosphere. The unit is configured with 9 temperature control zones and includes a water-cooling section. The conveyor system features a 14 inch wide mesh belt with belt stop alarm to provide an audible and visual indication in case of a conveyor stoppage.

There are purge chambers at the entrance and exit of this conveyor furnace. In these chambers purge gas flows from perforated plenum chambers above and below the belt and exhaust stacks with adjustable butterfly valves are located at the inner ends of each chamber. Load and unload tables at the entrance and exit of the conveyor provide ease of product transfer for the operator.

The furnace zone temperatures are controlled by Eurotherm controllers. These controllers have advanced PID control with variable overshoot inhibition. A hi-limit Eurotherm controller guards against over temperature conditions in each zone of temperature control.  A visual and audible alert and removal of power to the heating element occur in the event the monitor temperature exceeds a desired set point. 

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One Minute Mentor: Salt Bath Nitrocarburizing

Salt bath nitrocarburizing is usually performed at temperatures between 560 and 580 °C (1040 to 1075 °F) in cyanate- and carbonate-containing salts with traces of cyanides and furnaces similar to those used for the nitrocarburizing of mechanical compounds. These conditions fit well with the usual tempering temperatures of hot-work tool steels, which form the main field of application of salt bath nitrocarburizing in tooling with treatment times of 15 min to 2 h.

 To guarantee a good reproducible nitriding performance, the cyanate content must be kept at approximately 35% to achieve a full ε-nitride compound layer, which today is usually done by adding a regenerator. The advantages of salt bath nitrocarburizing can be found in the very homogeneous temperature distribution, the fast formation of thick compound layers that give good tribological and corrosion properties, its high flexibility, and he fact that it does not require that any special attention be given to passivation effects. Extrusion dies are regularly treated several times during use to restore the nitride layer at areas of heavy wear.

More recently special salt compositions were developed for lower nitrocarburizing temperatures, which are essential for cold-work tool steels that do have lower tempering temperatures.

For more information, click on the link below (subscription required). Then scroll to Figure 21

R Schneider ; R. Mesquita ; H. Altena ; T. Müller ; P. Seemann,Processes and Furnace Equipment for Heat Treating of Tool Steels, ASM International, 2014, https://doi.org/10.31399/asm.hb.v04d.a0005958

Can-Eng Furnaces contracted for continuous quench and temper furnace system

Can-Eng Furnaces International Ltd., Niagara, Ontario, was recently contracted to engineer and commission a continuous quench and temper furnace system for a North American producer of mining, construction, and materials handling products. The purchase of this equipment is part of a larger plant expansion and initiative to bring foreign outsourced manufacturing in house.  

This move is not only to improve part quality but also to help eliminate overall shipping costs and reduce supply chain issues which have been plaguing many industries over the past couple of years. This equipment will be part of an automated manufacturing cell and fed automatically from upstream handling equipment. Special considerations have been made to precisely control the quench temperature to reduce hardness variations and improve overall part quality.  

The multizone belt style temper furnace employs high efficiency natural gas fired heating and recirculation systems which have been proven to provide the ultimate in temperature uniformity in even the most demanding of applications.  

 

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Solar Atmospheres of Western PA treats a record load of titanium

Solar Atmospheres of Western PA, Hermitage, vacuum degassed a record 175,000 pounds of 6Al-4V titanium in their 48-foot-long vacuum furnace. The furnace load consisted of 154 sheets of titanium 40” wide X 240” long. It represented the largest and heaviest single load of titanium ever processed in Solar’s history.

Bob Hill, president of Solar Atmospheres of Western PA states, “The future of the global aerospace titanium market is very promising with the many opportunities in the commercial and military aircraft markets!”

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Constellium to provide closed-loop recycling for the all-new Megane E-TECH Electric

Constellium, Paris,  announced today its agreement with Renault Group to establish a closed-loop recycling process for the all-new Megane E-TECH Electric. 

Aluminum, lightweight and fully recyclable, is the material of choice for the electrification of the automotive fleet, and Constellium is well-positioned to support this transition with advanced products and solutions.

Renault Group has developed a closed-loop recycling process to bring manufacturing scrap from the stamping process directly back to Constellium, resulting in a reduced CO2 footprint. Based on best practices to avoid mixing 5xxx and 6xxx alloys and to compact scrap for optimal logistics at Renault Group, the closed-loop process will recycle these alloys, so that they can be reused in Renault Group’s production without any loss of properties, and overall with no downcycling.

Constellium, a full-service supplier of rolled and extruded aluminum solutions for the global automotive market, supplies aluminum for 1 in 4 vehicles produced in Europe and the U.S. We help automakers produce lighter, safer and more fuel-efficient vehicles, as well as electric vehicles with greater range. Renault Group is supplied by Constellium’s ASI-certified facility in Neuf Brisach, France.

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Multi-furnace heat treat project for major steel forger

Nutec Bickley, Mexico, has been awarded a contract to manufacture and install five new lift-up furnaces, along with a fully modernized combustion system, for a leading U.S. manufacturer of high-quality alloy steel and carbon steel closed-die forgings. The project will take place between May and December 2023, with onsite work completed one furnace at a time to ensure the customer’s production schedules are not impacted. Two of the new furnaces will be used for tempering, while the remaining three will be used for austenitizing. Each furnace will be fitted with the latest control systems, complete fiber flues, and new exhaust and pressure control systems, along with insulation.

Nutec Bickley’s state-of-the-art combustion packages will be fully compliant with NFPA 86 standards, incorporating a fuel-only control system to allow maximum temperature uniformity potential for all cycles. The retrofitted furnaces will benefit from high-velocity nozzle mixing burners fitted with high-temperature burner blocks. The combustion systems will also feature automatic air control valves to adjust the maximum air volume used and to ensure proper burner ignition conditions.

The project will involve careful teamwork between the customer and Nutec Bickley to ensure successful delivery and highest quality outcomes. Rodrigo González, VP Metals at Nutec Bickley, emphasized the importance of constant communication and status updates with customers for a dynamic and mutually beneficial project result.

 

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One Minute Mentor: Continuous Operating Furnaces for Tool Steel Strips

The continuous heat treatment of tool steel is applied to low- or medium-alloyed carbon steel strips as well as martensitic stainless steels. The described lines produce high-quality strip with respect to uniform structure, flatness, and bright surface finish. Steel grades with 0.4 to 1.2% C, low and high alloyed, can be processed. Strip dimensions range between 10 to 750 mm (0.4 to 29.5 in.) wide and 0.05 to 4 mm (0.002 to 0.16 in.) thick. High quenching rates are necessary, especially for plain carbon steels. Cooling gradients of up to 600 K/s are possible in a molten lead-bismuth quench. Because two-stage quenching technology provides considerable advantages over quenching in oil, this method has been adopted worldwide. It is also possible to achieve isothermal transformation to bainite and pearlite using a molten metal quench, so this type of hardening and tempering line is extremely versatile.

The configuration of a high-performance line involves an entry and exit section of the strip handling equipment (Fig. 10). The hardening section consists of the austenitizing furnace, the molten metal quench or hydrogen quench, and a martensite cooler. Beyond the martensite cooler the strip is martensitic and fully hardened, and then it passes through the tempering section—consisting of a leveling furnace, tempering furnace equipped with an atmosphere recirculation system, and an atmosphere jet cooler—to finally leave the facility, completely flat, with a bright surface finish and tempered to very uniform tensile strength.

For more information, click on the link below (subscription required). Then scroll to Figure 10

R Schneider ; R. Mesquita ; H. Altena ; T. Müller ; P. Seemann,Processes and Furnace Equipment for Heat Treating of Tool Steels, ASM International, 2014, https://doi.org/10.31399/asm.hb.v04d.a0005958

Ipsen repurposes ceramics facility for expanded hot zone production capacity

Ipsen, Pecatonica, Ill., formerly known as Ipsen Ceramics, is expanding its vacuum furnace hot zone assembly. The refurbishments include new lighting, HVAC, roofing, and other interior and exterior upgrades. Located at 325 John Street, less than 30 miles from Ipsen’s Vacuum Technology Excellence Center in Cherry Valley, the factory will initially employ up to eight material assemblers.

Incorporating the Pecatonica location into Ipsen’s vacuum furnace production and aftermarket process will provide added benefits to customers. Jake Hamid, Ipsen’s director and chief Operating Officer, stated that “Our goal is to reduce delivery times and better control the critical phase of assembly.” In the future, Ipsen is considering other manufacturing activities in Pecatonica to supplement the needs of the Vacuum Technology Excellence Center.

The move to repurpose the Pecatonica plant aligns with Ipsen’s commitment to providing high-quality vacuum furnace equipment and services to customers. The company’s dedication to meeting customer needs and reducing delivery times will be further enhanced by this strategic move, ensuring that Ipsen remains a leader in the vacuum furnace industry.

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Wisconsin oven ships pin conveyor oven to automotive manufacturer

Wisconsin Oven Corp., East Troy, has shipped one electrically heated conveyor oven to an automotive manufacturer, which will be used for tempering automotive parts. The conveyor oven features a chain style conveyor system with vertical pins, ensuring the uniform transfer of parts through the heating and cooldown zones of the oven. The maximum temperature rating of the conveyor oven is 260° C, with interior chamber dimensions of 3’6” W x 20’10” L x 9” H.

The conveyor oven also features a top-down bottom-up airflow configuration designed with a 55,000 CFM @ 50 HP blower, ensuring optimal temperature uniformity of ±2.5° C at 163°C, documented with a temperature uniformity test. The oven is equipped with a continuous chain conveyor with vertical pins, programmable temperature controller, and recorder with Ethernet capabilities.

The unique features of this tempering oven include the ability to automatically scan the parts while being loaded onto the conveyor and validate that the correct part is being loaded, providing a pass/fail regarding heating time and temperature. The conveyor oven also includes an ambient cooldown zone and supervised installation with start-up and training.

Mike Grande, vice president of sales,said that, “Our continuous designs provide customers with innovative solutions to meet their load and process requirements. This conveyor oven was designed with high-velocity impingement air nozzles for rapid, uniform heating and optimal part results.” The equipment was fully factory tested and adjusted prior to shipment from the facility, ensuring it met all Wisconsin Oven quality standards. The equipment comes with a 2-year warranty, providing peace of mind for the automotive manufacturer.

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Improving the Nitriding Process Using ZeroFlow® Gas Nitriding Technology

Gas nitriding has been performed for almost a century with many variations over the years. The benefits of nitriding are well documented and nitriding has gained amazing industrial acceptance. However, the equipment and control of the nitrided layer has continued to be challenging, and as such, nitriding is still slowly being adopted by industry, but the rate of change is improving.

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Expo sells out for Heat Treat

The ASM Heat Treating Society announced that the exposition for Heat Treat 2015 has sold out for the second time in a row. Hundreds of heat treating companies and gear manufacturers will be displaying their latest and greatest products and services next month at the 28th annual ASM Heat Treating Society Conference and Exposition in Detroit, Michigan.

With over 290 booths on the sold out floor – an increase of over 20 booths from 2013 – attendees will have plenty of opportunities to see the latest technology in action. A new addition this year are scheduled live demonstrations on the expo floor, which will educate attendees about new equipment in a hands-on way. Other exciting events happening on the show floor are plenary talk from Dr. Alan Taub of the LIFT consortium on Tuesday afternoon, and the exhibitor reception on Tuesday evening. Exhibitors are encouraged to invite their clients and prospects to attend, particularly if they are local.

Heat Treat 2015 is a biannual conference recognized by industry, academia and government professionals as the premier heat treating gathering in North America. This year it is taking placing in Detroit Michigan, a place with deep roots in heat treating and the birthplace of the ASM Heat Treat Society.

To see a list of the exhibitors, visit this page.

To register for Heat Treat 2015, visit here on the Heat Treat event website.