YiranNatural gas roller bottom furnaceAdopting thermal storage burner, double-sided heating of radiation tube, ON/OFF pulse control, forced exhaust by induced draft fan, the roller bottom furnace body and related parts are designed with airtightness. The inlet and outlet of the roller bottom heat treatment furnace are equipped with sealing, two heat-resistant steel sealing curtains, and high-pressure nitrogen gas sealing devices, which can achieve non oxidative heating of steel plates and improve the surface quality of the steel plates after heat treatment. The main structure of the roller bottom gas heat treatment furnace is as follows:

1. Roller bottom furnace body: The natural gas roller bottom furnace consists of a furnace steel structure, furnace building materials, and operating platform. The prefabricated segmented structure of the furnace steel structure consists of standard steel sections and plates welded together, with airtight welding. The furnace steel structure also includes support and sealing components for the furnace rollers and burners. There are operation and maintenance platforms on both sides and the top of the roller bottom heat treatment furnace; The furnace top and side walls above the furnace rollers adopt lightweight structures such as ceramic fiber module fiber blankets, which can make the roller bottom heat treatment furnace have less thermal inertia. The bottom of the furnace and the side walls below the furnace rollers are made of clay bricks, insulation bricks, insulation bricks, and insulation blankets, which not only provide insulation but also have a certain strength.

2. Furnace rolls: The bottom furnace rolls of natural gas can withstand the weight of steel plates at blast furnace temperature, as well as the corresponding thermal and mechanical stress impacts. Each furnace roller is driven by a variable frequency motor through a reducer and an intermediate coupling, and can be controlled separately;

3. Combustion system: The natural gas roller bottom furnace combustion system consists of a combustion supporting fan, a gas valve station, a gas pipeline, a burner, and a radiation tube. It burns in sections to form a longer flame, ensuring temperature uniformity along the length of the radiation tube;

4. Smoke exhaust system: The smoke exhaust system consists of induced draft fans, smoke exhaust pipes, etc. It recovers waste heat from smoke exhaust, reduces the temperature of exhaust gas, and saves energy consumption;

5. Control system: The thermal control system and drive control system of the natural gas roller bottom furnace include the automation and control of the heat treatment furnace and its feeding and discharging roller tables. Computer control systems allow for centralized operation and control of heat treatment equipment.

6. Accessory supporting system: The roller bottom natural gas heat treatment furnace equipment is advanced, highly automated and controlled, using clean natural gas energy to avoid chemical reactions between the magazine and the workpiece, which may affect the quality of the workpiece.