◆ is mainly used for heating the blank before rolling;◆ adopt patent multi-strand jet structure, flame dispersion combustion technology;◆ heating quality is good, the temperature difference between section and length direction of billet is small.◆ only upper heating, generally used for the thickness of 150 mm below the blank heating;The ◆ adopts P-HTAC control technology, adopts the PLC HMI distributed control system, the temperature control is accurate, the combustion is more sufficient, and effectively reduces the oxidation burning loss;◆ high efficiency heat storage honeycomb structure design, small size, simple and compact structure, more than double the efficiency of conventional heat storage;◆ furnace bottom is made of refractory material, no water cooling, energy saving, safety, longevity;The unit consumption of ◆ natural gas <40 m³/t, adopts double heat storage of air and gas to realize ultimate preheating recovery;◆ can use blast furnace gas, hot dirty gas, mixed gas, natural gas, liquefied gas, generator gas and other gas fuels;◆ use pulse combustion instead of proportional combustion, especially in low yield or heat preservation can maintain a stable flame length, so that the furnace cross-section temperature to maintain uniform;◆ high efficiency heat storage honeycomb structure design, small size, simple and compact structure, more than double the efficiency of conventional heat storage;◆ multi-strand jet structure, no flue gas high-speed erosion, no local high temperature, honeycomb life up to 18 months;◆ medium preheating temperature and inlet flue gas temperature difference less than 100℃, limit recovery of flue gas waste heat;◆ low oxygen volume dispersion combustion, low NOx combustion, furnace temperature more uniform;◆ comply with the Industrial Furnace and Kiln Air Pollutant Emission Standards (GB9078-1996);◆ pneumatic reversing valve, simple structure, stable and reliable operation, life up to 1.5 million times;◆ adopt castable whole furnace top and compound layer furnace wall structure to reduce heat loss of furnace body;◆ oxidation loss is controlled below 1.0%, the calorific value of gas is measured by on-line calorimeter, and the air-fuel ratio is controlled;◆ all automatic controls are equipped with advanced, reliable and perfect three-electric integrated automatic control system, the heating furnace can realize manual, semi-automatic, automatic operation and material tracking