The surface treatment of H13 hot-work tool steel for extrusion and forging dies is a technique that has been practiced for many years to extend the performance of the die surface. Many different methods of surface treatment have been tried with varying degrees of success.
Nitrex Metal Inc. supplied a nitriding system to Hydro Extruded Solutions in Trzcianka, Poland, to address the company’s need for improved process performance and more accurate control of nitriding results. The nitriding system replaces a decommissioned nitrider that was phased out several years ago due to extrusion die failures and inconsistent metallurgical results. It includes Nitreg technology that helps optimize parameters for maximum efficiency and quality and increase die strength and extrusion throughput while reducing the possibility of potential die failures.
Advanced Heat Treat Corp. (AHT) announced building expansions at its Monroe, Mich., and Waterloo, Iowa, locations. The extra space will enable AHT to add more equipment and services. The Michigan site is expanding its pit, which will allow for two additional nitriding units. AHT Burton, referred to by the street name because there are two locations in Waterloo, is adding additional square footage onto its building. The expansion will allow for additional equipment and services to be added. The expansions are expected to be complete by mid-summer.
Family-owned heat-treatment company GalvanoTechnik of Lombardy, Italy, expanded its portfolio to include Nitreg-controlled nitriding, Nitreg-C nitrocarburizing and ONC in-process oxidation treatments. The company invested in a compact Nitrex system configured to process 23.5-inch-diameter x 35.5-inch-high workloads that weigh up to 1,300 pounds. The system complies with the temperature-uniformity requirements of AMS 2750E and meets the specifications of ASM 2759/10, which make it possible to consistently achieve the required metallurgical and mechanical properties for controlled nitriding.
Lindberg/MPH shipped a 2012°F (1100°C) crucible furnace to a research-and-development laboratory in the nuclear industry. The furnace will be used for laboratory melting applications including annealing, ashing, carbon firing, ceramic firing, hardening, nitriding, normalizing, sintering, solution treating and stress relieving. It is designed for use with a variety of crucibles, including alumina, mullite, quartz and metallic.
JGEF Furnace manufactured and shipped a customized oxidation nitriding furnace. The pit furnace, which has useful dimensions of 43.3 inches (1,100 mm) in diameter x 70.9 inches (1,800 mm) high, has a maximum temperature rating of 1292°F (700°C). The goal for this project was to represent an advanced solution for metallic parts. The furnace includes an advanced oxidation system that ensures the workpieces are preheated in a controlled oxidizing atmosphere and guarantees corrosion resistance, which in turn facilitates nitrogen uptake and growth of the nitride compound layer.
SECO/Vacuum Technologies LLC named Mark Hemsath as director of nitriding and special vacuum furnaces. Hemsath previously held a position with SECO/Vacuum’s sister company, SECO/WARWICK Corp. as manager of the thermal group from 2014-2017 before taking time away to serve as director of sales and marketing with Advanced Heat Treat Corp. in Waterloo Iowa. In his new role, Hemsath will be the primary contact for gas nitriding furnace applications in North America. He will cover the Southeast from North Carolina to Texas for all SECO/Vacuum products, and he will handle special vacuum-furnace products throughout North America.
Last but certainly not least, as the saying goes, is our discussion of gas nitriding and nitrocarburizing process simulators and how they are used to predict and control these case-hardening processes. Let's learn more.
A case-hardening technique in use since the early 20th century, nitriding has been an effective lower-temperature heat treatment for steel workpieces since even before engineers and metallurgists fully understood it.