Tubular heating furnace is an important heating equipment used in petroleum refining, petrochemical, chemical fertilizer, and chemical fiber industries. It has become the heart equipment for cracking and conversion reactions in the production processes of ethylene and hydrofining. It has a great impact on the production quality of the entire device.Vacuum Hardening Stainless Steel product yield, energy consumption, and long-term safe operation play an important role. Its role in the production process is to use the heat energy of the high-temperature flame and flue gas generated when the fuel is burned in the furnace to heat the high-speed flowing material in the furnace tube to make it reach the temperature required by the subsequent process or to carry out the process in the furnace tube. Metallographic Inspection Knowledge of Bolt Quenching And Tempering chemical reaction. Compared with other industrial furnaces, the tubular heating furnace: the liquid or gas flowing in the furnace tube is usually high temperature, high pressure, flammable, explosive and similar substances; most of the heated medium is easy to coke in the furnace tube; the furnace temperature and material The temperature control requires precision; the heating method is direct fire; Ion Nitriding vs Gas Nitriding the main fuel is flammable and explosive liquid or gas fuel; the danger is high and the operating conditions are harsh; long-term continuous operation (generally about 3 years before shutdown is allowed for maintenance). Therefore, tubular heating furnaces play a pivotal role in petrochemical production.Sintering of B4C by Pressureless Liquid Phase Sintering