The term "detailed" is particularly fitting when describing steel wire ropes, which come in numerous varieties and often have complex specifications. Each number and letter in their markings carries specific meaning, and understanding these nuances is crucial for proper selection and application. In this post, we’ll explore how different types of wire ropes are labeled by manufacturers.
1. Full Marking Method for Single-Lay Steel Wire Ropes and Enclosed Steel Wire Ropes
The marking starts from the outer layer of the wire rope toward the center, detailing the number of wires in each layer, including the central wire, separated by a "+" sign. For instance, a single-strand wire rope might be marked as 12+6+1.
For wire ropes with non-circular cross-sections, additional symbols are appended to the wire count. For example, an enclosed wire rope could be marked as 23Z+9H+12+6+1.
2. Full Name Marking Method for Double-Lay Wire Ropes
Here, the marking begins at the outermost layer and moves inward, detailing the total number of strands per layer, followed by the structure of each strand in parentheses. Each layer’s strands are separated by a "+" sign, while the inner structure of the strands is similarly delineated. For example, a multi-strand rope with a natural fiber core might be marked as 12(6+1)+6(6+1)+NF.
For wire ropes with a metal strand core, the structure is denoted within brackets following a "+" sign. A metal strand core wire rope would be marked as 6(6+1)+IWS(6+1).
Metal rope core wire ropes follow a similar pattern but include the structure of the rope core in brackets before the main marking. An example would be a Silu rope core wire rope: 6(10+10+1)+IWR[6(6+1)+IWS(6+1)].
For filler wire ropes, the filler wire is noted with the letter "F," separated by a "+". An example of a metal rope core filler wire rope would be 6(12+6F+6+1)+IWRC6(6+1)+IWS(6+1).
Walinzon wire ropes use the "/" symbol to differentiate wires of varying diameters within the same layer, such as a natural fiber core Wallint wire rope: 6(6/6+6+1)+NF.
Special-shaped stock wire ropes add corresponding symbols to the number of stocks, like a natural fiber core triangular wire rope: 6V(9+12+1V)+NF.
3. Marking Method for Triple-Lay Wire Ropes
Markings begin from the outer layer toward the center, noting the total number of sub-ropes, followed by the structure of the sub-ropes in parentheses. The full name of a triple-lay steel wire rope might be marked as 6[6(6+1)+NF]+NF, with an abbreviation such as 6×6×7+7NF.
4. Marking Method for Braided Wire Ropes
This follows the same pattern as double-lay wire ropes, but includes the total number of strands preceded by the symbol "Y." The full name of a braided wire rope would be Y8(12+6F+6+1).
5. Marking Method for Flat Steel Wire Ropes
The marking method mirrors that of triple-lay wire ropes but adds the symbol "P" before the total number of sub-ropes. A flat steel wire rope might be fully marked as P8[4(6+1)+NF], with an abbreviation of P8×(4+7+NF).
6. Abbreviation Method for Wire Ropes
A simplified marking separates the total number of strands from the number of wires per strand with a "×" sign, followed by the core type separated by a "+." For example, the abbreviation would be 6×7+NF.
For wire contact wire ropes, such as Xilu wire ropes, the abbreviation codes are S, W, and Fi. For mixed or composite structures, the abbreviation code is placed after the total number of wires per strand. Examples include 6×41WS+IWR for a metal rope core Varintoshilu rope and Y8×19Fi for a braided wire rope.
7. Marking Method for Surface Contact Wire Ropes
Surface contact wire ropes use the same method as their corresponding double-lay counterparts but prepend the code "T" to the total number of strands. The full name of a fiber core surface contact wire rope might be 6T(6+1)+NF, with an abbreviation of 6T×7.
In conclusion, understanding the various marking methods for steel wire ropes is essential for selecting the right product for specific applications. These detailed markings ensure clarity and precision in communication across industries.
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