Coil rod for inner-layer wire of express elevator traction steel wire rope and production method of coil rod

Abstract

The invention discloses a coil rod for an inner-layer wire of an express elevator traction steel wire rope. The coil rod is characterized by comprising the following chemical components in percentage by weight: 0.63%-0.65% of C, 0.15%-0.30% of Si, 0.45%-0.60% of Mn, less than or equal to 0.012% of P, less than or equal to 0.008% of S, 0.0010%-0.0020% of total oxygen, 0.0030%-0.0040% of N, not more than 0.10% of inevitable impurities and the balance iron.

Description

technical field [0001] The invention belongs to a wire rod product for fine processing, and in particular relates to a wire rod for an inner layer wire of a high-speed elevator traction wire rope and a production method thereof. Background technique [0002] According to the operating speed, elevators are mainly divided into low and medium speed elevators (operating speed 1-2m / s, suitable for manned, freight, mines), high-speed elevators (operating speed 2-4m / s, suitable for high-rise residential and commercial buildings, sightseeing elevator). [0003] Elevator wire ropes include low-speed elevator wire ropes (main structure type 8*19S) and high-speed elevator wire ropes (main structure type 8*19S+8*7). rope. Generally, ordinary elevator wire ropes are used for elevators with an elevator speed below 2 m / s, and high-speed elevator wire ropes must be used for high-speed elevators with an elevator speed above 2 m / s. [0004] The process of high-speed elevator wire rope (8*1...

AI Technical Summary

Problems solved by technology

[0006] At present, steel wire rope manufacturers generally use carbon structural steel (steel grades 45#, 55#, 60# and 65#, etc.) to produce elevator traction wire ropes, which is far from meeting the raw material requirements for elevator traction wire rope production.

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