Large roll galvanized wire is a kind of metal product with anti-corrosion, strong durability and long service life. This paper will discuss the definition of galvanized wire, galvanized process and application fields, and introduce the production process of large roll galvanized wire in detail.
1. Definition of galvanized wire
Galvanized wire refers to a wire covered with a zinc layer on the surface of the wire. Because zinc has good chemical stability and electrochemical activity, it can form a protective film with anti-corrosion effect on the surface of the steel wire, effectively prevent the steel wire from being oxidized and corroded, thus extending the service life of the steel wire.
Second, galvanized process flow
The production of large roll galvanized wire mainly goes through the following steps:
Cleaning of steel wire: First clean the steel wire in the cleaning tank to remove impurities and grease and other substances on the surface to ensure the next step of galvanizing effect.
Pickling of steel wire: Put the cleaned steel wire into the pickling tank for pickling. The main function of this step is to remove the rust and oxide deposits on the surface of the steel wire, so that the surface of the steel wire is cleaner and smoother, which is conducive to subsequent calendering and galvanizing.
Steel wire rolling: After the above two steps of treatment, the steel wire is sent to the calender for rolling. After many rolling, the steel wire gradually becomes thinner and longer, and the surface is smoother, which helps to form a more uniform and flat galvanized layer.
The production of galvanized coating: In the process of making galvanized layer, zinc salt needs to be used as a raw material, and the zinc salt is dissolved in water through electrolysis and other ways to form the so-called “galvanized liquid”. The liquid has high electrical conductivity and can induce zinc ions to deposit on the galvanized coating, thus forming a uniform zinc coating on the surface of the steel wire.
Galvanized steel wire: After the treatment of the above steps, the steel wire is sent into the galvanized tank for galvanizing. The zinc layer is uniformly covered on the surface of the steel wire by means of electrolysis, forming a layer of zinc layer which is closely combined with the surface of the steel wire and has anti-corrosion effect. This process needs to control factors such as the time and temperature of galvanizing to obtain a better galvanizing effect.
Formaldehyde removal of steel wire: After the completion of galvanizing, it is necessary to remove formaldehyde from the steel wire. This is because the zinc solution often contains a small amount of harmful substances such as formaldehyde, if not cleaned, it will affect the quality of the steel wire.
Post time: 22-04-24