Before the blowing oxygen tube is subjected to spraying (throwing) treatment, cleaning methods are employed to remove grease and sediment from the surface of the blowing oxygen tube. The tube is then preheated in a furnace to between 40-60°C to maintain a dry surface. During the spraying (throwing) process, the absence of grease and other contaminants on the surface of the blowing oxygen tube enhances the rust removal effect. The dry surface of the blowing oxygen tube also facilitates the separation of steel shot, steel sand, rust, and oxide scale, resulting in a cleaner surface after rust removal. To prevent corrosion, some tubes undergo aluminum infiltration treatment. The aluminum infiltration refractory coated blowing oxygen tubes (PS series) consist of five layers: matrix layer, inner wall aluminum infiltration layer, outer wall aluminum infiltration layer, inner coating, and outer coating. These are developed based on the S series, combining the actual needs of electric arc furnace steelmaking with high refractoriness, low consumption, and easy operation. Additionally, the company maintains a year-round stock of blowing oxygen tubes in sizes of 1/4 inch, 3/8 inch, 4 meters, and 6 meters, and can produce special specification coated blowing oxygen tubes and special-shaped blowing oxygen tubes according to different manufacturer requirements.
