Refractoriness Furnace

The NHD-II-17 refractoriness furnace is designed for periodic operation, being a high-temperature box furnace that uses molybdenum rods as a heating element. It serves refractory material laboratories, industrial enterprises, and research institutions in testing the refractoriness of materials at high temperatures. The furnace is capable of measuring, indicating, and controlling the electric furnace's temperature and is specifically used for determining refractoriness with a range from 1580°C to 1800°C.

This equipment comes with several technical features such as a choice of rated temperatures (1650°C, 1700°C, 1800°C) and sample supports made from graphite or corundum, capable of withstanding temperatures above 1800°C. Samples are typically triangular cones with widths ranging from 10 to 20 mm. The cone disc rotates at a speed of 3 to 5 rpm. The testing methods comply with the national standard GB/T7322-1997 for refractoriness testing. Additional features include an observation port, 380V power supply with a rated power of 6KW, and temperature measurement using standard cones.