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How to identify hot-dip galvanized steel wire and galvanized steel wire?

2017-08-11

Hot-dip galvanized steel wire (hot-dipgalvanizedsteelwire) is a variety of high-quality carbon steel or high-quality high-carbon steel by pickling, phosphating, wire drawing, and then galvanized (hot or cold plating). Hot-dip galvanizing process is divided into two types: off-line annealing and wire annealing, namely wet method (single sheet hot-dip galvanizing method), off-line annealing (single sheet hot-dip galvanizing method), hot galvanized Huilin (Wheeling (Continuous hot-dip galvanizing method), in-line annealing of the Sendzimir method (protective gas method), improved Sengmyir method, US steel method (with Kawasaki method of Japan), Selas method And Sharon law.
Cold galvanized also called electro-galvanized, is the use of electrolysis equipment will be degreasing, pickling, and then into the composition of zinc salt solution, and connect the electrolytic equipment, the negative, placed in the pipe opposite the zinc version, connected to the electrolysis The positive pole of the device is connected to the power source, and the zinc is deposited on the pipe by the movement of the current from the positive pole to the negative electrode. The cold-plated pipe is galvanized after processing. Cold galvanized (galvanized): is in the plating tank through the current unidirectional so that zinc gradually plated metal appearance, slow production, uniform coating, the thickness of thin, usually only 3-15 microns, the appearance of bright, smooth, beautiful High degree of corrosion resistance is poor, generally a few months will be rust.
Distinction: hot galvanized coating thicker, generally 30-60 microns, coating corrosion resistance is higher. Suitable for outdoor work of steel parts, such as highway fence, power tower, large-size fasteners and other "rough" long-term anti-rust. Hot galvanized steel wire surface smooth, smooth, no cracks, knots, from the thorns, scars and corrosion, galvanized layer uniform, strong adhesion, corrosion resistance lasting, excellent toughness and flexibility. Tensile strength should be between 900Mpa-2200Mpa (wire diameter Φ0.2mm-Φ4.4mm). The number of twists (Φ0.5mm) in more than 20 times, repeated bending should be more than 13 times. Electro-galvanized thickness is thin, usually only 3-15 microns, the appearance of bright, smooth, high degree of beauty, corrosion resistance is poor, generally a few months will be rust.