A plant that produces highly advanced fasteners for the largest manufacturers in the aerospace industry ordered a vacuum furnace from SECO/WARWICK. The furnace will process self-locking nuts, nut plates, barrel nuts, stud nuts, spline nuts, clamp nuts and a wide range of washers and flanges. It will operate at temperatures up to 2372°F (1300°C). The furnace will be delivered in a standard configuration and become part of the Italian company’s modern production plant.
UPC-Marathon, a Nitrex company, installed an ExoFlex gas generator for Jomarca, a manufacturer of fasteners, bolts, nuts and fixing elements in Brazil. The generator will supply exothermic gas to a continuous wire annealing furnace, which is part of Jomarca’s efforts to meet market demand efficiently and sustainably for baling wire in the South American construction industry. The ExoFlex gas generator is the latest addition to Jomarca’s in-house heat-treating operations. The company now has the ability to produce exothermic gas on-demand with zero waste while also making more efficient use of electricity and gas feedstock.
Can-Eng Furnaces International Ltd. prepared the shipment of an 1,800 kg/hour continuous mesh-belt heat-treatment system to a fastener manufacturer in Italy. The system integrates energy-efficient combustion and waste-heat recovery technology. It includes an atmosphere-controlled mesh-belt hardening system, oil quench, post-wash system, temper furnace, soluble oil system, bi-directional conveyor discharge and Can-Eng’s process enhancement technology (PET) system. The PET system provides the user with access to Industry 4.0 features such as product traceability, detailed process data for continuous process improvements, comprehensive equipment diagnostics, cost analysis and inventory management. The system will be commissioned in the second quarter of 2022 to meet the company’s capacity expectations.
Can-Eng Furnaces International Ltd. received a contract to design and supply a 6,000-pound/hour continuous mesh-belt furnace system to a precision automotive and specialty fastener manufacturer located in Michigan. The system includes an atmosphere-controlled mesh-belt hardening system, temper furnace, automated bin-dumping loader, pre-washer, oil quench, post-wash system, in-line soluble oil system, bi-directional conveyor discharge and Can-Eng’s PET Level 2 SCADA system.
Can-Eng Furnaces International Ltd. has been awarded two contracts from a producer of high-volume specialty automotive fasteners. Can-Eng will supply two mesh-belt heat-treatment systems, which will include: computerized vibratory loading system, rotary phosphate removal washer, mesh-belt hardening furnace, oil-quench system, post-quench wash system, mesh-belt temper furnace and part containerization system. The fully integrated systems feature Can-Eng’s PET (process enhancement technology) system, which provides the client with complete product traceability through the thermal process, process data collection, historical event archiving, process variable trend monitoring and scheduling optimization.
The carbonitriding of fasteners is of critical importance to their functionality and one of the most common case-hardening heat treatments. Studying how the process works in this application will shed a great deal of light on all carbonitriding processes. Let’s learn more.
Gas carbonitriding is a modified form of the carburizing process and is not a form of nitriding. In this process, both carbon (C) and nitrogen (N) are introduced into the surface of the steel by introducing ammonia (NH3) and a hydrocarbon enriching gas into the furnace atmosphere in order to add nitrogen to the carburized case as it is being produced.
L&L Special Furnace Co. Inc. delivered three bench-mounted box furnaces that will be used to test high-temperature aerospace fasteners. The fastener manufacturer now has five GS series furnaces at its facility in Pennsylvania. The furnaces have internal dimensions of 18 inches wide x 12 inches high x 24 inches deep. Included is a spring-assist vertical lift door that allows for effortless loading and unloading at high temperatures. The industrial control system includes a Eurotherm temperature controller, over-temperature protection and a recirculation fan for uniformity.
L&L Special Furnace Co. Inc. manufactured and supplied a high-uniformity, pit-style furnace used for annealing to a manufacturer of aerospace fasteners. The annealing process occurs when the parts are evenly heated to 1400°F (760°C) and held for a predetermined amount of time. Temperature uniformity is critical to this process, and both ambient and load temperature must maintain ±10°F throughout the cycle. The fastener parts are placed in baskets and loaded by an overhead crane into the furnace. There are guide bars to ensure that the load is centered and cannot damage the furnace liner. The program or recipe is entered into the program control, and the cycle is started. At the completion of the cycle, the parts are removed and are ready for inspection and shipment.
Most heat treaters are aware of many failure phenomena, perhaps the most well-known of which is hydrogen embrittlement (aka hydrogen-assisted cracking). But there are several other types, such as liquid-metal embrittlement, that we must understand as well. Let’s learn more.
SECO/WARWICK delivered an all-metal high-vacuum furnace with a work-chamber size of 1,200 mm x 1,200 mm x 1,200 mm to Hauck Heat Treatment Group’s recently expanded plant in Eindhoven, Netherlands. According to the companies, it is the largest furnace of its type currently in operation in the Benelux region. It is also the third furnace SECO/WARWICK has delivered to Hauck’s Eindhoven facility. In addition, SECO/WARWICK has established a strong cooperation with Hauck’s plant in Poland, where new vacuum furnaces are scheduled to be delivered.