W-shaped silicon molybdenum rod, comprising a heating section with a W-shaped structure and two cold ends. Each end of the heating section is equipped with a telescopic tube, each of which includes an outer tube and an inner tube. The inner wall of the outer tube is threaded internally, while the outer wall of the inner tube is threaded externally. The inner tube is axially screwed into the outer tube. The lower ends of the two outer tubes are respectively screwed into both ends of the heating section, and the two cold ends are correspondingly screwed into the upper ends of the two inner tubes. The outer surface of the heating section is intermittently provided with heat dissipation holes. This utility model features a simple structure, stable operation, easy disassembly and assembly, convenient maintenance, adjustable length, and wide applicability.

When paired with an automated power supply system, it can achieve precise constant temperature and automatically adjust temperature according to the actual needs of the production process via curves. It is now widely used in national defense, machinery, metallurgy, light chemical industry, ceramics, semiconductors, analytical testing, scientific research, and other fields, serving as an electric heating element for various electric furnaces and kilns. Tunnel kilns, roller kilns, glass furnaces, vacuum furnaces, muffle furnaces, smelting furnaces, and various heating equipment find silicon carbide rod heating both convenient and safe. It is extensively employed in high-temperature electric furnaces, electric kilns, and electric heating equipment across industries such as electronics, magnetic materials, powder metallurgy, ceramics, glass, metallurgy, and machinery.