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Answer:
Steel wire rope comes in various constructions, each designed for specific applications. The most common types include:

6×19 Class: Offers a good balance of flexibility and abrasion resistance. Ideal for general purposes.
6×36 Class: More flexible than 6×19, suitable for applications requiring more bending.
8×19 Class: Provides excellent flexibility and fatigue resistance, used in applications with frequent bending.
19×7: Known for its non-rotating properties, making it suitable for overhead lifting.
When choosing a steel wire rope, consider factors such as the required strength, flexibility, abrasion resistance, and the specific application (e.g., lifting, pulling, securing).

Answer:
Proper maintenance and regular inspection of steel wire rope are crucial for safety and extending its lifespan:

Inspection: Regularly check for signs of wear, corrosion, broken wires, kinks, and other damage. Pay special attention to high-stress areas.
Lubrication: Apply appropriate lubricants to reduce friction and prevent corrosion. Make sure to use a lubricant compatible with the rope’s environment and application.
Storage: Store steel wire ropes in a dry, clean area to prevent rust and corrosion. Avoid contact with chemicals and extreme temperatures.
Handling: Avoid sudden loads or jerks, and ensure proper spooling to prevent kinks and bends.
Following these guidelines helps ensure the rope’s performance and safety.

Answer:
Several factors influence the strength and durability of steel wire rope:

Material Quality: High-quality steel and proper manufacturing processes increase the rope’s strength and durability.
Construction: The rope’s construction (e.g., number of strands, wires per strand) impacts its flexibility and strength.
Diameter: Larger diameters generally provide higher strength but may reduce flexibility.
Loading Conditions: Consistent, even loading extends the rope’s life, while shock loads and excessive tension can cause premature failure.
Environmental Conditions: Exposure to corrosive environments, extreme temperatures, and abrasive conditions can reduce the rope’s lifespan.
Choosing the right rope for the specific application and ensuring proper usage and maintenance can enhance its strength and durability.

Answer:
The breaking strength of steel wire rope is determined through standardized testing procedures where the rope is subjected to tension until it fails. The breaking strength is the maximum load the rope can withstand before breaking.

Safety factors are essential to ensure the rope’s safe use. Commonly used safety factors include:

General Lifting: A safety factor of 5:1, meaning the working load limit (WLL) is one-fifth of the rope’s breaking strength.
Critical Lifting: A higher safety factor, such as 7:1 or more, is used in applications where failure could lead to severe consequences.
Static Loads: A safety factor of 3:1 might be acceptable for non-critical, static applications.
Always consider the specific requirements of your application and consult relevant standards and guidelines to determine the appropriate safety factor.