1. Galvanized steel belt production process
The first stage
The whole roll of strip steel pickling rust removal, decontamination, to achieve a bright and clean surface.
The second stage
After pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank, hot dip galvanizing.
The third stage
The galvanized steel strip shall be put into storage from the plate. The galvanized layer can be based on customer demand, generally not less than 500g/ square meter, and any sample shall not be less than 480g/ square meter.
2. Post processing of steel strip
The post-treatment of galvanized strip steel includes three aspects, passivation, pre-phosphating and oiling. First of all, passivation treatment of galvanized strip steel can improve the surface structure and luster of galvanized layer, improve the corrosion resistance and service life of galvanized layer, and improve the binding force of coating and base metal. Passivation treatment mainly adopts chromate passivation. Some activators, such as fluoride, phosphoric acid or sulphuric acid, are added to the passivation solution to get thicker chromate film after passivation. When there is fluoride in the passivation solution, the surface tension of the steel strip can be reduced, the film forming reaction can be accelerated, and the chemical polishing can be increased, so that the passivation film is fine and bright.
The application effect of galvanized strip steel meets modern needs, and it has been widely used as a building material. Galvanized strip steel has many years of rust, corrosion resistance, it can do not be affected by the adverse environment, always maintain their own performance and appearance. In the process of using galvanized strip steel, in order to improve its operation efficiency and its own characteristics, galvanized strip steel can be finished after treatment, make its performance more outstanding.
3. The difference between cold rolled and hot rolled steel strip
Cold rolled steel strip in the manufacturing process will not produce temperature drop and uneven temperature, so it can produce the minimum thickness of 0.001 mm very thin steel strip, which is hot rolled steel strip can not achieve. When manufacturers produce cold rolled steel strip, the surface of rolled parts will not produce iron filings, and pickling is carried out before rolling, so the surface quality of cold rolled steel strip is good, and rough surface, suede surface, polished surface and other special surfaces can be produced according to the requirements of use.
In the production of cold rolled steel strip, a wide range of mechanical properties can be satisfied by a certain degree of cold rolling deformation and simple heat treatment. However, the cold-rolled steel strip produced by the manufacturer of galvanized steel strip uses hot-rolled steel strip as blank, so its development will also be affected by hot rolling. In order to ensure the quality and performance of cold rolled steel strip, manufacturers need to continuously improve the quality level of hot rolled coil in the process of processing. The quality of hot rolled coil needs to be improved, including surface quality, microstructure, thickness tolerance and flatness.
4. Application of galvanized steel strip
Galvanized strip steel is generally used to make steel pipes, such as: greenhouse pipe, water pipe, heating pipe, gas transmission pipe; It can also be used in construction, light industry, automobile, agriculture, animal husbandry, fishery and commercial industries.
The construction industry is mainly used for manufacturing anti-corrosion industrial and civil building roof panels, roof grilles, etc. The light industry uses it to manufacture home appliance shells, civil chimneys, kitchen utensils, etc., and the automobile industry mainly uses it to manufacture corrosion-resistant parts of cars, etc. Agriculture, animal husbandry and fishery are mainly used as food storage and transportation, frozen processing tools for meat and aquatic products, etc. Commercial mainly used as materials storage and transportation, packaging tools; Steel structure sandalwood (C, Z steel); Light steel keel, suspended ceiling keel, etc.
5. Galvanized steel strip supplier
We are a large supplier of galvanized steel strip. We can process the steel strip differently according to the specific requirements of our customers. We have advanced production equipment and technology, and produce in strict accordance with the process required by customers. The steel products we produce are of high quality and absolutely meets the norm. Welcome to customize.