Dongkuk Industries Co. Ltd., the largest manufacturer of cold-rolled medium-carbon and high-carbon steel strip in South Korea, placed an order with Ebner for a hardening and tempering line. According to Dongkuk Industries, it will be the first facility of its kind in East Asia. Ebner’s scope of supply includes an austenitizing furnace, a HICON/H2Q hydrogen quenching system, a FlexFlat martensite cooler with SmartFlat automatic flatness supervision system, a leveling furnace and an atmosphere jet cooler. A combined bainite/pearlite transformation zone will also be supplied. Medium- and high-carbon steel strip will be hardened and tempered in the facility starting in the summer of 2021.
Gasbarre Thermal Processing Systems shipped a custom-built atmosphere tempering furnace to a manufacturer in the aerospace market with captive heat-treating capabilities. With a work-load size of 84 inches wide x 42 inches deep x and 60 inches tall, coupled with a maximum load weight of 6,000 pounds, the furnace is specifically designed for the company’s manufactured components. The electrically heated furnace has an operating temperature range of 350-1600°F and passes uniformity at +/-10°F per AMS 2750E. The system is equipped with Eurotherm temperature-controlling instrumentation and an Allen-Bradley PLC and HMI.
Tempering occurs by heating the steel to below its critical temperature in order to transform the metastable body-centered tetragonal martensite structure that is formed during quenching into a more stable structure of fine carbide particles.
Gasbarre Thermal Processing Systems delivered a custom-built batch tempering furnace to a commercial heat-treating company located on the West Coast. With a work-load size of 168 inches wide x 48 inches deep x and 48 inches tall and a maximum load weight of 10,000 pounds, the furnace can accommodate a number of differently sized parts within the aerospace market. The gas-fired unit passes survey at ±10°F over a temperature range of 850-1350°F (455-732°C) per AMS 2750E.
SECO/VACUUM Technologies (SVT), a SECO/WARWICK Group company, sold four Vector vacuum furnaces in the first two months of 2020. Two high-pressure gas-quench (HPGQ) furnaces of different sizes were purchased by a Midwest tool-and-die manufacturer. The other two furnaces were purchased by a cutting-tool manufacturer, who will use it for tempering, and an aerospace components manufacturer.
L&L Special Furnace Co. Inc. shipped a floor-standing forging furnace and a floor-standing tempering furnace to a manufacturer of medical implant components located in the northeastern U.S. The forging furnace has working dimensions of 48 inches wide x 24 inches high x 24 inches deep and a maximum operating temperature of 1800°F (982°C). The parts that are blanks are heated in the furnace. Once at temperature, they are moved to the hot-forming press and formed into the required shape. The electrical heating system provides a clean atmosphere with no products of combustion that could affect the workload.
Solar Atmospheres of Western PA installed a 14-foot-long car-bottom air furnace that was surveyed in accordance with AMS2750 Rev E and is uniform within ±10°F (Class 2). With a work zone measuring 60 inches wide x 54 inches high x 168 inches long, the furnace will be capable of handling workloads up to 30,000 pounds. A maximum operating temperature of 1400°F allows the furnace to accommodate the tempering of large tool-steel components and the age-hardening processes of nickel-based alloys and precipitation-hardenable stainless steels.
SECO/VACUUM (SVT), a SECO/WARWICK company, sold a vacuum tempering furnace to a global manufacturer of cutting tools. The furnace, which will be used for tempering and stress relieving metal parts, is part of the company’s expansion and complements another vacuum tempering furnace commissioned earlier in 2019 at the facility. The horizontal, front-loading furnace has an all-metal hot zone for clean vacuum processing. It includes a convection fan and a pressurized gas quench for quick cooling.
L&L Special Furnace Co. Inc. shipped a dual-chamber heat-treating furnace to a southeastern U.S. manufacturer of various items used in the production of heavy equipment and transportation devices. The box furnace will be used to heat treat the tooling used to manufacture these items. Its top chamber, which has an effective work zone of 16 inches wide x 16 inches high x 32 inches deep, is used to harden tool steels. Its bottom chamber, which has an effective work zone of 14 inches wide x 14 inches high x 32 inches deep, is used for tempering, stress relief and preheating.
Check out the October 22, 2020 issue of Industrial Heating, featuring the "Improving Kiln ROI: Taking Back Lost Profits with a Bricking Machine", "Industrial Automation: Manufacturing, Heat Treating and Data Analytics", "Optimizing Burner Management and Combustion Control with Safety PLCs", and much more.