What is the actual operating pressure of the gas mass flow controller under the condition of steel bottom blowing

useMFSeries gas mass flow controllerThere are two ways to blow argon into the ladle: one is bottom blowing and the other is top blowing. Bottom blowing of ladle is the installation of gas supply components at the bottom of the ladle(Breathable bricks, fine metal tube gas supply bricks)Argon gas is blown into the molten steel through the breathable bricks at the bottom, forming a large number of small argon bubbles. Breathable bricks not only have certain breathability, but also must be able to withstand steel liquid erosion, have certain high temperature strength and good resistance to rapid cooling and heating. High alumina bricks are generally used. The advantage of this method is the uniform temperature, composition, and effective removal of inclusions in the molten steel,equipmentSimple, flexible and convenient to operate, no need to occupy fixed space, can be used in steelmaking andLFPerform argon blowing throughout the entire process.

When blowing argon into the ladle, it will be usedMFSeries gas mass flow controllerThe purity and speed of blowing argon gas. The blowing of argon in steel ladles is affected by pressure. The higher the argon blowing pressure, the greater the stirring force, and the faster the bubbles rise. However, if the pressure of argon blowing is too high, the range of argon gas flow will become smaller and even form a continuous column of bubbles. Moreover, it is easy to cause severe rolling of the ladle liquid surface, exposing a large amount of molten steel to air and causing secondary oxidation and cooling. Steel slag is mixed and crushed into emulsified slag, which enters deep into the molten steel and increases the content of inclusions. so.The maximum pressure is limited to not breaking through the slag layer and exposing the liquid surface. Insufficient pressure, weak stirring ability, prolonged argon blowing time, and even blockage of permeable bricks. So too much or too little pressure is not good. The ideal argon blowing pressure is to make the nitrogen flow spread throughout the entire ladle, and the argon bubbles are evenly distributed in the molten steel.

MFSeries gas mass flow controllerfromMass flow sensorHot type componentsQuality flow controller regulating valveComposed of an amplification circuit, it is made by using the heat transfer effect of the flowing fluid to change the thermal conduction distribution of the measuring capillary tube temperature distribution. Its principle is to use the principle of temperature difference calorimetry before and after capillary heat transfer to measure the mass flow rate of gas. The flow signal measured by the sensor is amplified, and then compared with the set voltage. The obtained difference is used to drive and control the regulating valve, and the closed-loop control of the flow rate through the channel is made equal to the set flow rate. It can accurately and reliably measure and control gas mass flow rate, with high measurement and control accuracy, small zero drift, wide measurement and control range, and the accuracy of measurement and control is not affected by environmental temperature and external pressure. Whether blowing from the bottom or top of the ladle, it can effectively control the uniform injection of argon gas, making the composition and temperature of the molten steel uniform before pouring, achieving the normalization of continuous casting process, and improving the impact toughness of steel.