Tundish spraying machine
The working principle of the tundish gunning machine is relatively simple but highly efficient. It first delivers the refractory material to the spray gun through the feeding system, and then uses high-pressure airflow or a hydraulic system to drive the spray gun to evenly spray the refractory material onto the inner surface of the tundish. During the spraying process, the equipment will be precisely controlled according to preset parameters (such as spraying speed, spraying thickness, etc.) to ensure the spraying quality and effect.
A tundish spraying machine is a specialized piece of equipment used in steel plants, specifically during the continuous casting process. Its primary function is to spray a cooling or protective agent (usually water, mist, or sometimes a combination of cooling agents) onto the tundish, which holds molten steel before it is poured into molds. This spraying process ensures the proper temperature management, protects the tundish from wear, and improves the quality of the molten steel.
Tundish spraying machine key functions and benefits:
1. Cooling of the Tundish:
– The machine sprays a cooling agent onto the walls and surface of the molten steel in the tundish, preventing overheating and ensuring that the molten metal stays in the desired temperature range for efficient casting.
– This cooling helps prevent premature solidification of the molten steel and ensures it flows smoothly into the molds.
2. Protection Against Oxidation:
– By reducing the exposure of the molten metal to air, the spraying machine helps minimize oxidation, which can negatively impact the quality of the steel.
– It creates a thin layer of protective spray that shields the metal from the atmosphere, reducing the likelihood of impurities forming.
3. Prevention of Tundish Wear:
– The walls of the tundish are subject to intense heat and wear from the molten steel. The spray system cools the tundish surface and reduces thermal shock, thus prolonging the life of the refractory material lining the tundish.
– This protection helps maintain the tundish’s structural integrity and reduces maintenance costs.
4. Improving Flow Stability:
– The controlled spray helps manage the flow of molten steel from the tundish to the molds, reducing turbulence and the formation of slag or other defects.
– It stabilizes the liquid steel, ensuring a smooth and defect-free flow to the next stage of the casting process.
5. Automation and Control:
– Modern tundish spraying machines are automated, with sensors and control systems that adjust the spraying rate and pressure based on factors like the temperature of the molten metal or the casting speed.
– This automation ensures precise control over the spraying process, leading to more consistent and reliable results.
6. Energy Efficiency:
– By regulating the amount of cooling agent used, tundish spraying machines are designed to be energy-efficient, minimizing excess use of water or other agents while still achieving the desired results.
Applications of tundish spraying machine:
– Steel Production: The tundish spraying machine is most commonly used in continuous casting lines for the production of steel, particularly in casting long products such as billets, blooms, and slabs.
– Quality Control: It contributes to higher-quality steel by reducing surface defects, ensuring the molten metal flows smoothly, and maintaining optimal temperatures.
In essence, the tundish spraying machine plays a crucial role in ensuring the efficiency and quality of steel production by controlling the molten metal’s temperature, flow, and preventing oxidation, while also protecting the tundish infrastructure from damage.
