The automation of high temperature furnace and muffle furnace is the direction of development, due to the implementation of thermal automatic adjustment, can timely and correctly reflect and effectively control a series of thermal parameters such as furnace temperature and furnace pressure, so that the desired heating system can be well realized and the output of the furnace can be improved.
The use of electronic computer makes the furnace from the loading positioning, temperature control of each section of the furnace, fuel and air flow control, furnace pressure automatic control, until the steel out of the furnace time and discharge program operation, are given by the computer control value, can implement a very high control of the furnace condition, the temperature and temperature difference of the furnace steel have reached a very high point.
The degree of mechanization of the furnace is getting higher and higher, and the rolling workshop has developed from the past push-type continuous heating furnace to various stepper furnaces, roller bottom furnaces, ring furnaces, chain heating furnaces, etc. Some special-shaped blanks used to be heated in chamber furnaces, but now they are heated in annular furnaces, and productivity has been greatly improved.
The furnace types of high-temperature furnaces and muffle furnaces are developing in the direction of large-scale, multi-stage, mechanized and automated.
In order to strengthen the heat supply and provide output, large heating furnaces with five-point, six-point or even eight-point heating appear in the furnace, and the preheating section becomes a new heating section due to the increase in temperature. There are also many variations in the installation form of the burner, such as the forward reverse burner with upper and lower heating; Uniform hot forging adopts a furnace roof flat flame burner, and even the furnace type evolves to a flat top with a full length, ** with a stove roof burner; In order to make the adjustment of the furnace temperature system and furnace pressure distribution more flexible, side burners are arranged along the entire length of the furnace, so that the furnace becomes a straight-through furnace with only one heating section.
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