L&L Special Furnace Co. Inc. shipped a dual-chamber heat-treating and temper furnace, along with an oil-quench tank, to an eastern European ammunition manufacturer. The equipment will play a supportive role in keeping key production equipment online along with thermal processing of munitions projectiles. The furnace has two chambers: the top chamber is rated to 2350°F and is used for heat treating various steels and other nonferrous materials; the bottom chamber is rated for 1250°F and includes a recirculation fan and baffle for tempering, stress relief or preheating.
Lindberg/MPH shipped two gas-fired hardening and tempering furnaces to the manufacturing industry. The large-capacity box furnaces will be used for the normalizing, austenitizing and tempering of forged components. The furnaces can accept a maximum load measuring 6 feet wide x 6 feet deep x 6 feet high, and the actual chamber is larger to provide clearance for parts. The outer-shell sidewalls and floor are constructed from 3/16-inch steel plate. The lining is ceramic-fiber modules that store low amounts of heat and have superior insulating qualities to provide maximum fuel efficiency.
TMK’s Seversky Pipe Plant awarded SMS group the final acceptance certificate for a heat-treatment line for tubes and pipes at its Polevskoy site in Russia. The line has an annual capacity of up to 300,000 tons of pipes with diameters between 168 and 370 mm (6.6 and 14.5 inches), a wall thickness of up to 40 mm (1.5 inches) and lengths of up to 13.5 meters (44.3 feet). The line is able to process small batch sizes and different product groups in a cost-efficient manner.
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.