Surface treatment method and device for nickel-chromium alloy wire

A surface treatment device, a technology of nickel-chromium alloy, which is applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of inability to stabilize the rust layer, high toxicity of the treatment solution, and high environmental pollution.

Active Publication Date: 2020-12-15
BEIJING SHOUGANG GITANE NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different chemical components of weathering steels, these technologies cannot stabilize the rust layer well when used on weathering steels. The rust layer on the surface of weathering steels appears in the early stage of the stabilization process. , treatment of liquid toxicity, environmental pollution, high cost and other technical problems

Method used

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  • Surface treatment method and device for nickel-chromium alloy wire
  • Surface treatment method and device for nickel-chromium alloy wire
  • Surface treatment method and device for nickel-chromium alloy wire

Examples

Experimental program
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Effect test

Embodiment 1

[0060] 1. A surface treatment device for nickel-chromium alloy wire, comprising a furnace body, a furnace furnace and a furnace cover,

[0061] The furnace is arranged inside the furnace body, the furnace is provided with an opening, the wall of the furnace is provided with an electric furnace wire, and the hollow part of the furnace is provided with a place for placing a nickel-chromium alloy wire. A heat treatment chamber, the heat treatment chamber is provided with an air agitator;

[0062] The furnace cover is arranged on the opening, the furnace cover is detachably connected to the furnace, and the furnace cover is provided with a vent.

[0063] 2. A surface treatment method for nickel-chromium alloy wire, said method comprising:

[0064] A nickel-chromium alloy wire is obtained, and the chemical composition of the nickel-chromium alloy wire includes: C: 0.01%-0.02%; Si: 0.9%-1.5%; Mn: 0.15%-0.2%; Cr: 20.5%- 22%; P<0.015%; S<0.0015%; Al: 0.2%~0.6%; Fe: 0.2%~1.5%; Re: 0....

Embodiment 2

[0068] HNO described in this example 3 The concentration of the solution is 150g / l, the flow rate of the air agitator is 80m 3 / min, the annealing temperature is 890°C, and the annealing time is 3.5h.

Embodiment 3

[0070] HNO described in this example 3 The concentration of the solution is 90g / l, the flow rate of the air agitator is 90m 3 / min, the annealing temperature is 930°C, and the annealing time is 2.5h.

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Abstract

The invention discloses a surface treatment method for a nickel-chromium alloy wire. The surface treatment method comprises the steps of obtaining the nickel-chromium alloy wire, and pretreating the nickel-chromium alloy wire with an HNO3 solution to obtain a pretreated nickel-chromium alloy wire; and annealing the pretreated nickel-chromium alloy wire in an annealing furnace to obtain the nickel-chromium alloy wire with a uniform, consistent emerald green oxide film on the surface, specifically, an air agitator is arranged in the annealing furnace, an air vent is formed in a furnace cover ofthe annealing furnace, the annealing temperature is 890-930 DEG C, and the annealing time is 2.5-3.5 hours. According to the surface treatment method, the nickel-chromium alloy wire with the uniform,consistent emerald green oxide film on the surface can be obtained, the oxidation color of the nickel-chromium alloy wire is uniform and stable, the color is emerald green, the requirements of customers are met to the greatest extent, and the surface treatment method is very helpful for improving the quality of the product.

Description

technical field [0001] The invention relates to the technical field of processing electrothermal alloy materials, in particular to a surface treatment method and device for a nickel-chromium alloy wire. Background technique [0002] Nickel-chromium alloy wire is a typical electric heating alloy widely used. Cr in the alloy is a single-phase austenitic alloy dissolved in Ni through substitution. It has a high melting point, stable resistivity, strong resistance to high temperature oxidation, and good It is widely used in machinery, metallurgy, industrial furnaces and other fields because of its excellent room temperature mechanical properties, high temperature mechanical properties, long service life and many other advantages. In order to solve this problem, there are generally two protection methods in the actual use of weathering steel. The first is to use the same coating method as ordinary carbon steel, but coating not only greatly increases the use cost and operation pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/10C22F1/10C23C8/12C22C19/05
CPCC23G1/10C22F1/10C23C8/12C22C19/055
Inventor 胡静张德汉张建陶科李刚
Owner BEIJING SHOUGANG GITANE NEW MATERIALS
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