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Coating method of marine anchor chain

2022-07-27

The Anchor Chain, Anchor And Anchor Chain locker of the ship are often eroded by friction and seawater, and are prone to serious rust. Therefore, the coating is required to be wear-resistant, seawater-resistant and rust-proof. The commonly used coating is coal tar pitch varnish, which is generally coated with 2 to 3 coats, and the dry film thickness is more than 60 μm. In the use of ships, it is found that the paint film falls off due to bumping and other reasons, and it needs to be repaired in time. In a dry environment, sand the edge of the old paint film with sandpaper to remove dust and dirt, and carefully apply the asphalt paint on the Anchor chain by brushing. After 24 hours, apply the second coat, and it can take 5 days. During use, do not drag and stack the anchor chain that is not completely dry.
The surface treatment of the new anchor chain can be shot peening or chemical pickling. Many shipyards use rolling method to remove rust, tie the anchor chain with iron wire into a speed shape of about 3m long, put it into the drum, put steel wire forging, gold steel sand, iron scraps, etc. in the drum, and use the motor to drive the drum to rotate. The anchor chain is hit by abrasives to remove rust. After removing the rust dust in the barrel and on the anchor chain, it can be painted. Generally, it can be hoisted into the dipping cylinder for dipping construction. After 3 to 5 minutes, it can be hoisted to dry. The shortest coating interval is 24h, generally 3 coats of dip coating.
Jiangsu Zhongcan Marine Equipment Co., Ltd. specializes in Marine Anchor chains, Marine Rigging and Ship Outfitting. Welcome to inquire.

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