High-performance duplex stainless steel wire rope alloy material and preparation method thereof

Abstract

The invention relates to a high-performance duplex stainless steel wire rope alloy material and a preparation method thereof, and belongs to the technical field of steel alloy materials. The duplex stainless steel wire rope comprises the following components in percentage by mass: less than or equal to 0.03% of C, less than or equal to 0.03% of S, less than or equal to 1.0% of Si, less than or equal to 1.0% of Mn, less than or equal to 0.003% of P, 23.5-24.5% of Cr, 4.5-5.5% of Ni, 0.7-1.4% of Mo, 0.7-3.0% of Cu, 0.10-0.20% of N, 0.005-0.20% of rare earth Ce and the balance of iron and inevitable impurities. The preparation method comprises the following steps of preparing a steel billet by adopting a medium-frequency and AOD smelting process; the billets are subjected to a hot rolling process to prepare duplex stainless steel wire rods with different diameters, and the wire rods are subjected to processes such as acid pickling, repeated cold drawing and annealing to prepare semi-finished wire rods; and the semi-finished wire is subjected to stranding and rope combining, and the high-performance duplex stainless steel finished steel wire rope is obtained. The alloy material has excellent cold workability, strength, fatigue resistance and corrosion resistance, has remarkable popularization value, is particularly suitable for being used as maritime work steel, and can serve in moisture and salt corrosion environments.

Description

technical field [0001] The invention relates to a high-performance duplex stainless steel wire rope alloy material and a preparation method thereof, belonging to the technical field of iron and steel alloy materials and products thereof. Background technique [0002] With the development of industrial technology, stainless steel wire rope has been widely used in chemical industry, aviation, machinery and instrumentation and other fields, such as stainless steel wire rope vibration isolator due to its large damping, good vibration absorption performance, high temperature resistance, impact resistance, corrosion resistance In recent years, it has emerged in the application of anti-vibration bases for precision equipment in ships. At present, domestic stainless steel wire ropes are mainly austenitic stainless steel 304 and 316, and the main components of austenitic stainless steel are chromium, nickel, molybdenum, etc., and nickel is expensive. my country is a country lacking n...

AI Technical Summary

Problems solved by technology

In recent years, low-nickel-molybdenum resource-saving duplex stainless steel, which tends to replace high-nickel austenitic stainless steel, has developed rapidly. However, duplex stainless steel is composed of two phases of austenite and ferrite, and it is difficult to deform due to large work hardening during cold working. , the production of steel wire rope requires multi-pass processing at the same time. The biggest difficulty in the production of duplex stainless steel wire rope lies in the breakthrough of cold processing technology, and the existing duplex stainless steel is difficult to meet the requirements

[0003] Domestic patented technology on duplex stainless steel wire, such as a manufacturing method of duplex stainless steel braided hose wire, the authorized patent document publication number is CN103103457B, but the manganese content in the disclosed alloy is too high, which is not conducive to corrosion resistance Another example is a duplex stainless steel wire and its preparation method. The authorized patent document publication number is CN105624580A. Difficult to control, making it difficult to maintain an appropriate two-phase ratio, while the total amount of alloying elements is high, making it too expensive

The most fundamental thing in the existing technology is that these materials and preparation methods have not solved the biggest difficulty in the production of duplex stainless steel wire ropes, that is, the breakthrough in cold processing technology.

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