Galvanized Steel Angle process, Angle steel galvanized production process is as follows.
Inspection of Angle steel before plating. Angle steel pre-plating inspection belongs to the pre-plating range of galvanized, which is the first process of galvanized production, to check whether the Angle steel meets the requirements of our galvanized.
Check whether the workpiece has hanging holes and lugs for processing. If there is no hanging point, it is necessary to open or weld. For the specific opening position and size, it is best to communicate with the customer first to understand the process performance requirements of the Angle steel sent by the customer, so as to avoid damage to the performance of the Angle steel.
Check whether the Angle steel has zinc discharge required for zinc dipping and process holes required for zinc liquid reflux. Otherwise, it is necessary to determine the opening and manufacturing position and size, which also needs to communicate with the customer.
According to the degree of corrosion on the surface of Angle steel, whether the cover can be removed after pickling, whether there are contaminants such as paint and oil, and according to its properties and characteristics, it is decided to use fire, mechanical grinding, alkali washing and other removal methods.
Galvanized Steel Angle process, Angle steel galvanized production process is as follows.
Alkali wash, degreasing. The alkali washing method and degreasing method belong to the pre-plating treatment of zinc plating. The main process content is to eliminate the oil pollution and coating on the surface of the Angle steel, especially to pay attention to the paint removal. The production department has an example, alkali washing, acid washing is ineffective, after fire can be burnt, but still stick, the analysis is known to be paint, so the use of special cleaning agent can be effectively removed.
Pickling is a pretreatment process of galvanizing, and its main process content is to remove rust, iron oxide, deposited salts and other coating.
Check and handle after pickling. After pickling inspection treatment, which belongs to the pre-plating treatment of galvanized, the main process content is to check the pickling defects and surface quality of pickling Angle steel is ideal, and take corresponding measures. If the pickling is not sufficient, it is necessary to pickling again or to extend the pickling time; If the treatment before pickling is not complete, then re-treatment after pickling.
Wash Angle steel. Remove residual impurities and iron salts on the surface of Angle steel such as alkali water and acid washing liquid.
Leaching bath aid. Dip zinc plating solution to make the surface of Angle steel cleaner, protect the surface of Angle steel before dipping zinc, reduce or avoid secondary rust.
Post time: Aug-19-2022