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Duplex stainless steel wire and preparation method thereof

A duplex stainless steel and wire drawing technology, applied in the field of metal materials, can solve the problems of unfavorable corrosion resistance, low total amount of alloying elements, improvement and other problems, and achieve the effect of solving large deformation resistance, excellent tensile strength and improving yield.

Active Publication Date: 2017-11-03
江苏亚盛金属制品有限公司
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  • Application Information

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Problems solved by technology

[0004] Domestic patents on duplex stainless steel are mainly concentrated in the fields of smelting and molding preparation. Patents on duplex stainless steel wire rods, such as: a method for manufacturing duplex stainless steel braided hose wire, authorized publication number: CN103103457B, however, the patented alloy contains If the manganese content is too high, it is not conducive to the improvement of corrosion resistance; and the total amount of alloying elements is low, and the strength of the steel wire is difficult to guarantee

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  • Duplex stainless steel wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A duplex stainless steel wire whose chemical composition is calculated by mass percentage: C: 0.011%, Cr: 23%, Ni: 5.5%, Mo: 3%, Mn: 0.4%, Si: 0.4%, Cu: 0.2% , N: 0.15%, Ce: 0.05%, B: 0.003%, balance: Fe and unavoidable impurities.

[0043] The preparation method of the duplex stainless steel wire is: medium frequency induction smelting-electroslag remelting-hot rolling-wire drawing, solid solution-surface pickling and cleaning-cold drawing.

[0044] Among them, during the intermediate frequency induction smelting process, the raw materials are heated and dried to keep the raw materials dry and pure, and reduce the gas content in the steel. In order to ensure the purity of duplex stainless steel, the selected raw materials are metals with high purity, and the intermediate alloys are For ultra-low carbon alloys, the order of adding elements during medium-frequency induction melting is as follows: pure iron, nickel plate and slag are put into the induction furnace. Stand...

Embodiment 2

[0054] A duplex stainless steel wire as in Example 1, the difference is that its chemical composition is calculated by mass percentage: C: 0.013%, Cr: 24%, Ni: 6.5%, Mo: 4.4%, Mn: 0.39 %, Si: 0.43%, Cu: 0.3%, N: 0.18%, Ce: 0.07%, B: 0.004%, balance: Fe and unavoidable impurities.

Embodiment 3

[0056] A duplex stainless steel wire as in Example 1, the difference is that its chemical composition is calculated by mass percentage: C: 0.010%, Cr: 22%, Ni: 5.2%, Mo: 2.4%, Mn: 0.36 %, Si: 0.35%, Cu: 0.18%, N: 0.12%, Ce: 0.04%, B: 0.002%, balance: Fe and unavoidable impurities.

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Abstract

The invention provides a duplex stainless steel wire. By the adoption of the duplex stainless steel wire, the problems that steel wire alloy for a tension compensation device for an electric railway contact net is excessively high in manganese content, the corrosion resistance cannot be improved easily, the total content of alloy element is low, and the strength of a steel wire cannot be guaranteed are solved. The duplex stainless steel wire comprises, by mass, 0.008%-0.016% of C, 20%-28% of Cr, 3%-8% of Ni, 1%-6% of Mo, 0.1%-1% of Mn, 0.1%-1% of Si, 0.1%-0.6% of Cu, 0.05%-0.5% of N, 0.03%-0.2% of Ce, 0.001%-0.005% of B, 0-0.03% of P, 0-0.01% of S, 0-0.01% of O and the balance Fe and inevitable impurities. A preparation method of the duplex stainless steel wire comprises the steps of medium-frequency induction smelting, electroslag remelting, hot rolling, wiredrawing and solid solution, surface pickling and cleaning, and cold drawing. The steel wire obtained through the preparation method is high in tensile strength, excellent in corrosion resistance and excellent in anti-fatigue performance; through technique design and implementation, the duplex stainless steel wire can meet the performance requirement of a tension compensation rope, and the technical problem that cold-drawing formation of the duplex stainless steel wire is difficult is solved.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a duplex stainless steel wire and a preparation method thereof. Background technique [0002] The safety and reliability of the catenary system is an important guarantee for the safe and reliable operation of electrified railways. The tension compensation rope with superior performance plays an important role in supporting the safe and reliable operation of the catenary system. The tension compensation rope has been exposed above the railway for many years and is subject to pollution. , corrosion and long-term tensile stress, once the tension compensation rope fails and breaks, it will directly affect the working efficiency of the contact line and catenary cable, and then affect the normal operation of the electric locomotive. Duplex stainless steel wire with excellent comprehensive performance is used as raw material for steel wire rope preparation. [0003] Duplex stai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/44C22C38/04C22C38/02C22C38/42C22C38/54C22C33/06C21C7/06C21D8/06
CPCC21C7/06C21D8/065C21D2211/001C21D2211/005C22C33/06C22C38/001C22C38/004C22C38/005C22C38/02C22C38/04C22C38/42C22C38/44C22C38/54
Inventor 朱治愿蒋东华蒋红俊周江赵洪章徐玲利沈超明
Owner 江苏亚盛金属制品有限公司
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