Problems that are easy to occur during Gabion surface treatment

Problems that are easy to occur during Gabion surface treatment

Gabion is mechanically woven from high corrosion resistant, high strength, ductile low carbon steel wire or PVC coated steel wire. The box structure made with Gabion is the Gabion box.

According to ASTM and EN standards, the diameter of the low carbon steel wire used varies according to engineering design requirements. Generally between 2.0-4.0mm, the tensile strength of Gabion steel wire is not less than 38kg/m2, and the upper zinc content is generally higher than 245g/m2.

The edge line diameter of a Gabion sheet is generally larger than the diameter of the wire. The length of the double-wire stranded portion shall not be less than 50 mm to ensure that the metal plating and the PVC coating of the stranded steel wire are not damaged.

After washing with Gabion, it is not enough to be washed or washed, and it can directly enter the solvent pool to increase the acidity of the solvent and increase the iron ions. Or use hydrochloric acid as a plating agent to cover the surface of the strip with a layer of iron salt and bring in the zinc solution. In the galvanization, alloy slag is formed to adhere to the surface of the workpiece.

Gabion surface roughness: Gabion is generally weakly acidic during pickling. Unheated or low temperature will prolong the drying time, and will also corrode the surface of the part to form an adherent iron salt. When galvanizing, alloy slag will be attached to the workpiece. The surface makes the surface of the coating rough.

Gabion "white rust": is a common defect of galvanized layer, mainly due to the lack of passivation treatment in the galvanizing process, leaving moisture on the strip or failing to passivate the passivation solution. After water cooling, it is not completely dry, and it is stored in a humid and poorly ventilated environment. Electrochemical corrosion occurs and “white rust” or gray powdery corrosion deposits appear, which directly affects product and engineering quality. This white or gray powder is mainly It is composed of a compound such as basic zinc carbonate.