Calorised Steel Pipe is continuously hot dip diffusion coated inner & outer with an aluminum coating according to the standard of GB/T18592-2001.The hot dip diffusion process, pioneered by Xingrui, provides a tight metallurgical bond between the steel and the coating,lance pipe lasts five to seven times longer than mid steel pipe in oxygen injection,also shorten the tap-time in the oxygen enrichment operation
In our calorising process, the diffusion layer formed is a mixture of iron and aluminides, dependent on the substrate material, with an aluminium content of between 30 and 45 wt. % at the surface. The percentage of aluminium gradually decreases through the diffusion zone to that of the substrate material.
This process results in a material with the strength of steel plus the corrosion protection of aluminum, and the synergistic heat protection of an aluminum alloy,high temperature resistance can reach to 600
In any calorising process, components are placed in a steel retort surrounded by a powder mixture containing aluminium, a halide and an inert diluent. The retort is then sealed, placed into a furnace and heated to an elevated temperature, held at temperature and then slowly cooled back to room temperature. After cooling the components are removed from the retorts and cleaned to remove any compound or residues.
In the process of steel manufacturing by open hearth or electric furnace, the consumption rate of lance pipes for oxygen injection sows rather high ratio owing to high temperature and severe oxidation. In general, steel pipes are used as lance pipes for oxygen injection. If mild steel pipes are treated by this process consumption rate of lance pipes will increase 6 - 7 times. It is necessary to make the pipe fireproof as a first step. Special treatment is then needed to protect the pipe from any falling-off or scaling-off by shock or by bending stress.
As a result of research conducted over many years, it was discovered that the most effectual method is to diffuse aluminium into the pipe's surface, so as to promote wear proof properties on steel pipe. That is to say, calorising is to be carried at, in and outside of the steel pipe to promote wear and fire proof properties of the pipe.
Comparison with Mild Steel
(1) Minimum Consumption The calorized layer and the refractory coating layer together generate the strong heat resistance and anti-oxidation to achieve minimum consumption of lance pipe to cut down your cost. (2) Superior Quality Strict quality control is made at each production process over the raw materials to the finished products. (3) Economical Price Low price with high quality is achieved through mass production at our most advanced factory. USES: (1) Cutting steel scrap, melting and refining steel at electric arc furnace. (2) Injection of carbon, lime powder and/or other additives for adjusting grades of carbon steel or special steel. (3) Removing slag inside oxygen converter. (4) Other uses which require strong resistance against heat, oxidation, vanadium attack, etc.
Supplier: Calorized Oxygen lancing pipes, and, thermic (thermal) lance pipes
Supplier: Thermic lance pipe, thermal lance pipe, burning bar steel pipe, oxygen lance pipe, calorised/calorized lance pipe, aluminum steel pipe, ceramic coated lance pipe, refractory steel pipe, calorized & ceramic coated lance pipe, aluminum refactory steel pipe
Oxygen Lance Pipe 1. Plain oxygen lance pipe 2. Ceramic coated oxygen lance pipe 3. Calorized oxygen lance pipe 4. Ceramic coated and calorized oxygen lance pipe Welded tube and seamless tube is available. We supply all the types of oxygen lance pipes according to your requirement. Oxygen Lance is a hollow electric welded tube used in various sizes from 1/8 INCHES to 2 INCHES inside diameter. Oxygen Lance Pipe comes in a variety of end finishes. End caps are provided to prevent contamination. Oxygen Lancing is a reliable method for tapping heats or for other production operations. Oxygen Lance Pipe is used to remove the carbon from molten metal. During the steelmaking process, a desired carbon content is attained by injecting oxygen into the molten metal. This process is used in blast furnaces, basic oxygen furnaces and also induction and electric furnaces Lances are used for opening furnace tap holes, cleaning ladle well blocks, unclogging tundish nozzles, cutting ferrous materials, providing the steel or iron is hot enough to sustain burning, ie cutting skulls, spill clean-up, etc
