Hot galvanizing: main methods and technical features of the procedure
In order to improve the physical performance of metal products, experts recommend hot-dip galvanizing. This procedure allows you to increase the resistance of the product to moisture, protect it from the negative effects of chemically active components, as well as mechanical stress. Company “A-Synthesis” offers professional galvanizing services for metal products of various sizes. In their work, the company’s specialists use reliable technical equipment and high-quality consumables.
The mentioned method involves immersing the metal being processed in a special bath with molten zinc (temperature about 450 degrees). The thickness of the finished coating, as well as the stages of the procedure, correspond to GOST 9.307-89. The process of hot-dip galvanizing of metal structures includes the following technological measures:
For this purpose, the workpiece is placed in a container with phosphoric acid, the temperature of the liquid is about 40-50 degrees.
After degreasing, the metal is immersed in a container with an etching solution consisting of an inhibitor and hydrochloric acid (up to 15%). The liquid temperature is 30 degrees.
Next, the metal structure is thoroughly washed in technical water (30 degrees).
The cleaned product is immersed in a bath with a chloride solution (zinc and ammonium chlorides), the temperature of which should be at least 60 degrees.
After chemical treatment, the material must be dried. To do this, it is placed in a preheating chamber (the temperature inside is about 75-90 degrees). Streams of hot air circulate inside the system, due to which it ensures complete drying of the treated surface.
At high speed, immersion in a bath of molten zinc is carried out, and then the finished product is slowly removed already with a galvanized coating.
Each of the stages of hot-dip galvanizing is carefully monitored by qualified specialists of the company. Professional skills, knowledge and work experience allow us to guarantee the high quality of order execution of any complexity. The procedure is carried out in strict accordance with GOSTs. The thickness of the galvanized coating is from 40 to 200 microns. The service life of manufactured metal structures reaches 50 years, depending on the operating conditions. We are chosen because:
You can order hot-dip galvanized steel through feedback or by contacting the company’s managers at the specified contacts.
For more information, please contact us or leave your contact details and we will call you back.