1. Components of ship equipment
Marine Anchor Chain is an important part of ship equipment. It is a special chain that connects the
Anchor and the hull and transmits the anchor's grip. It is often composed of anchor end chain link, middle chain link and end chain link. According to the structure of the chain link, it can be divided into two types: geared and unstacked. The former is stronger than the latter; according to the manufacturing method, it can be divided into cast steel and electric welding. The length of
Marine Anchor chain is measured in knots, and the standard length of each section is 27.5m. Internodes are connected with connecting links or connecting shackles. Usually, the chain length of the main anchor on each side of a 10,000-ton ship is about 12 knots.
At present, electric welded ship
Anchor Chain has been the most widely used on commercial ships. Almost all are manufactured by flash welding method, and casting is rarely used. Except for the accessories, which are mostly forged parts, forging has been basically eliminated.
It is used to produce graded steel grades. Electric welding is divided into three grades: M1, M2 and M3, and cast steel is divided into two grades: M2 and M3. Adding A (such as AM2) before the corresponding code indicates a chain with gears, and B indicates a chain without gears (there are two levels, BM1 and BM2). The higher the grade of steel, the greater the tensile strength. Grade AM1 is killed steel, and grades AM2 and AM3 are fully killed and fine-grained steel. For the same ship, if stronger steel is used, the chain link size can be appropriately reduced. The size of the marine anchor chain needs to be appropriately selected according to the ship.
Of course, there are also higher-level R4 grade marine anchor chains, but currently only Yaxing Marine Anchor Chain Factory can manufacture them.
3.The meaning of marine anchor chain
1. The meaning of anchor. Anchor refers to an anchor placed on both sides of the bow (some are also located at the stern) that can grasp the bottom after being thrown into the water, and can anchor the ship or other floating body on the anchorage through the ship's anchor chain or anchor cable. equipment in a certain water area.
2. Main functions of anchors Anchors are made of cast steel or forged steel and have a specific shape. The anchor is mainly composed of anchor shackle (or anchor ring), anchor stem, anchor head, anchor arm and anchor claw. Types of anchors include Hall anchors (also known as mountain anchors), navy anchors, Danforth anchors, etc. Anchors must be inspected by the department before they can be used. The function of the anchor is an important ship accessory for speed and anchoring.
3. The meaning and structural characteristics of marine anchor chain Marine anchor chain (Chain cable; Anchor Cable) refers to the chain used to connect the anchor and the ship hull. It is composed of many chain links connected, and the size is expressed in approximately chain diameter (mm). According to whether there is a brace in the middle of the chain link, it is divided into a braced anchor key and an unbranched marine anchor chain. Marine anchor chains can be made by forging, casting and welding. Marine anchor chain is composed of several "sections" (shackles), each section is 25.0 to 27.5 meters long, and the sections are connected with chain links or shackles. After the anchor is winched, the marine anchor chain is stored in the marine anchor chain compartment at the bow of the ship. The specifications of marine anchor chains are calculated and determined in accordance with ship construction regulations.
4. Main contents of anchor equipment Equipment of Anchor refers to the general name of anchor, marine anchor chain, windlass, marine anchor chain cabin and ancillary equipment. It consists of an anchor, a marine anchor chain, a marine anchor chain tube, a chain maker, an anchor windlass or a winch, a marine anchor chain tube, a marine anchor chain cabin, etc. The ship relies on the anchor's grip and the weight of the ship's anchor chain to withstand the forces exerted on the ship during wind and waves to ensure the safety of the ship's anchoring. Anchor equipment can also assist ship maneuvering. For example, ships often rely on it to complete operations such as docking and leaving docks, turning around, avoiding collisions, and escaping shallow water.
