In the moving of consistent steel tubes, particularly in the creation cycle of accuracy consistent steel tubes, how does the corrosive pickling process continue? Today, the secretive cloak is divulged for you!
The utilization of a corrosive answer for eliminate scale and rust from steel surfaces is called pickling. Iron oxides (Fe3O4, Fe2O3, FeO, and so forth), like scales and rust, synthetically respond with the corrosive answer for structure salts that are disintegrated in the corrosive arrangement and eliminated. Pickling acids Seamless steel pipe schedule 40 sulfuric corrosive, hydrochloric corrosive, phosphoric corrosive, nitric corrosive, and blended acids.
Essentially impregnated pickling, stream pickling and corrosive glue rust evacuation. As a rule, the impregnation pickling technique is by and large utilized, and the shower strategy can be utilized in large scale manufacturing. Steel parts are by and large cured in 10% to 20% (by volume) sulfuric corrosive arrangement at a temperature of 40°C. At the point when the iron substance in the arrangement surpasses 80g/L and the ferrous sulfate surpasses 215g/L, the corrosive arrangement ought to be changed. At room temperature, pickling of steel with 20% to 80% (by volume) hydrochloric corrosive arrangement isn’t inclined to over-consumption and hydrogen embrittlement. Because of the extraordinary impact of corrosive on metal erosion, consumption inhibitors should be added. In the wake of cleaning, the metal surface becomes silver white, and the surface is passivated to further develop the consumption obstruction of the treated steel.
To take out the surface adsorption of the diatomaceous earth transporter and diminish the following of the chromatographic pinnacles, the transporter should be corrosive washed or soluble base washed preceding use. Pickling is done by plunging the transporter with 6 mol/L hydrochloric corrosive for 2 hours or warming with concentrated hydrochloric corrosive for 30 minutes, sifting, washing with water to impartiality, and drying. Pickling eliminates pollutants like iron, aluminum, calcium, and magnesium on a superficial level however doesn’t eliminate silanol gatherings. Pickling upholds are reasonable for the investigation of acidic examples.
Degreasing and derusting the outer layer of accuracy consistent steel cylinders to get ready for the following system. In the creation cycle, the pickling system is to eliminate the surface oxide skin, after the grease treatment (carbon steel – phosphorus saponification, tempered steel – fat lime, copper aluminum – oiled), with the old cycle – copper plating), and afterward Complete profound handling. On the off chance that the steel pipe isn’t cured and there might be oxides and oil on a superficial level, the phosphating arrangement can’t eliminate them and the nature of phosphating will be diminished.