1960 MPa grade galvanized steel wire rope for ocean engineering, and production method of 1960 MPa grade galvanized steel wire rope

Abstract

The invention provides a 1960 MPa grade galvanized steel wire rope for ocean engineering, and a production method of the 1960 MPa grade galvanized steel wire rope. The 1960 MPa grade galvanized steelwire rope for the ocean engineering comprises the following components of, 0.87-0.91% of C, 0.15-0.30% of Si, 0.65-0.85% of Mn, 0.15-0.25% of Cr, 0.020-0.060% of V, less than or equal to 0.015% of P,less than or equal to 0.010% of S, less than or equal to 0.05% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.010% of Alt, less than or equal to 1.0 PPm of H, and the balance Fe andunavoidable impurity elements. Compared with the prior art, refining and continuous casting technologies are optimized, so that composition segregation is avoided; with the adoption of an optimized rolling-control and cold-control rolling technology, network cementite and martensite are avoided, so that a metallographic structure with the sorbitizing rate of 90% or above can be obtained; and a galvanized steel wire made of a hot rolling wire fully meets the use requirement of the 1960 MPa grade galvanized steel wire rope for the ocean engineering.

Description

Technical field [0001] The invention belongs to the technical field of high-strength galvanized steel wire rope production technology, and in particular relates to a 1960MPa-class galvanized steel wire rope for marine engineering and a production method thereof. Background technique [0002] Wire rope is a flexible rope twisted with multiple or strands of thin steel wires. The steel wire rope has high strength, light weight, stable work, not easy to be broken suddenly, and reliable work. Due to the unique properties of steel wire ropes, no more ideal product has been found at home and abroad to replace steel wire ropes comprehensively or in a field. Therefore, steel wire ropes are used in marine engineering, metallurgy, mining, oil and gas drilling, machinery, chemical engineering, and aerospace. And other fields have become indispensable parts or materials. my country is in a critical period of offshore engineering construction, and the demand for high-strength galvanized stee...

AI Technical Summary

Problems solved by technology

If only relying on C or Si, Mn strengthening, although the strength requirements can also be achieved, it is very easy to appear reticulated cementite and core martensite, which seriously damages the performance of the material, especially the increase of Si content, due to its work hardening The high rate can achieve a rapid increase in strength, but it is very easy to cause a sharp decrease in the plasticity and toughness of the drawn steel wire

In addition, the drawn steel wire will recover during hot-dip galvanizing, resulting in a decrease in the strength and torsion times of the steel wire. It is necessary to add alloy elements to reduce the strength and torsion times.

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