Several methods of surface treatment for drilling anchor bolts

The surface treatment of anchor bolt fasteners refers to the process of forming coverage on the surface of fasteners according to some methods. After surface treatment, the appearance of the fastener is more beautiful and elegant, and the corrosion resistance of the fastener itself is improved. There are several surface finishes for fasteners. 1. Electroplating of fasteners: Electroplating of fasteners refers to infiltrating the components that must be electroplated into a special solution with some accumulated metal compounds. After using the solution according to the amount of current, the metal component in the saturated solution deposits and adheres to the penetrating part of the fastener. The electroplating of fasteners usually contains hot-dip galvanized, copper, nickel, chromium, copper-nickel alloy, etc. 2. Hot-dip galvanizing of fasteners: The hot-dip galvanizing of fasteners is to infiltrate fasteners made of carbon steel into a molten zinc hot-dip galvanizing bath with a temperature of about 510 ° C, so that the surface of the fasteners The iron-zinc alloy material is changed to passivated zinc, so as to realize the surface treatment effect. The price of hot-dip galvanizing for fasteners is higher than that of electroplating, about 1.5 to 2 yuan per kilogram. 3. Mechanical plating of fasteners: The mechanical plating of drilled anchor bolt fasteners represents the surface of the fastener, which is impacted by the coated metal powder according to the corresponding physical and chemical methods, prompting The coated metal material forms a coating on the surface of the fastener through spray welding to achieve the surface treatment effect. Mechanical equipment plating of fasteners is critical for screw, nut and washer fittings. The primary goal of maijin's surface treatment for perforated anchor bolts is to make the fastener itself have corrosion resistance, thereby improving the stability and adaptability of the fastener. Therefore, the quality judgment of the surface treatment of fasteners is mainly to check whether the anti-corrosion ability of fasteners is effectively improved, and whether the improvement meets expectations.