Oxygen lance pipe can provide enough oxygen for steel smelting and other industries. In the process of use, in order to resist corrosion and improve the service life of the equipment, a layer of aluminum products with good stability is usually brushed on the surface of the commodity, that is, the so-called aluminizing treatment.
As a heat treatment method for steel-making oxygen lance pipe, it is characterized by aluminizing diffusion annealing in addition to conventional degreasing, pickling, washing, plating aid, drying and hot dip of molten aluminum, so as to achieve the aluminizing layer thickness of more than 0.2mm, then test gas, silk and phosphoric acid washing, and then coating and porcelain. The coating has a special secret prescription. The heat resistance and corrosion resistance of the aluminum penetration coating in the treatment process are greatly improved. The coating is firm and not easy to fall off, which effectively improves its service life, saves steel, saves pipe replacement time, improves oxygen blowing efficiency, and reduces labor intensity of workers.
In addition, the coating materials of the fireproof thick wall oxygen lance pipe are micro silica powder, quartz powder, high alumina cement, fireproof powder and magnesium oxide powder, which are mixed with sodium silicate and toluene in proportion to form a paste. The alcohol can be applied on the metal pipe for 10 minutes, and then the metal pipe is put into a dry room at about 60 ° C. It must be a fireproof commodity. Compared with the prior art, the thick wall made after coating on the metal pipe has a longer service life, reduces the consumption of the metal pipe, reduces the smelting time, and is simple to make. The metal pipe can be successfully coated only once.
