CN210856370U - A multi-layer anti-corrosion stainless steel wire - Google Patents

Abstract

The multi-layer anti-corrosion stainless steel wire provided by the utility model comprises a wire core, an intermediate coating layer and a passivation protective film; the intermediate coating layer is located on the outer circle of the wire core and is fixedly connected with the wire core; The passivation protective film is located on the outer circumference of the intermediate plating layer, and is fixedly connected with the intermediate plating layer. The multi-layer anti-corrosion stainless steel wire rod provided by the utility model utilizes a nickel-plated layer on the outer circle of the wire core to improve the bonding force between the outer layer and the wire core and reduce stress, and at the same time, the outer layer of chrome-plated layer can be formed by oxidation during passivation The dense chromium oxide can protect the wire, and the high-order chromium ions can be reduced or eliminated in the passivation solution, which improves the environmental protection.

Description

A multi-layer anti-corrosion stainless steel wire

technical field

The utility model relates to a multi-layer anti-corrosion stainless steel wire.

Background technique

The traditional stainless steel wire needs to be electroplated after processing, so as to ensure the anti-corrosion and high temperature resistance of the wire. However, since electroplating itself is a chemical reaction, the implementation of the electroplating process is particularly demanding, and it is easy to cause surface flashing. point, which affects the quality of the wire.

Therefore, the existing process is improved to a passivation process, and a passivation film is directly produced on the surface of the wire for protection. Since the inner layer of the passivation film is composed of chromium oxide, the bonding force with the wire core is limited, and it is easily damaged under stress, which cannot be Long-term effective wire protection.

Utility model content

The utility model aims to provide a multi-layer anti-corrosion stainless steel wire, which utilizes an intermediate plating layer to combine a passivation film and a wire core, and at the same time, the plating layer is divided into an inner layer and an outer layer, the inner layer is convenient for combining the wire core, and the outer layer is convenient for passivation treatment.

In order to solve the above problems, the multi-layer anti-corrosion stainless steel wire provided by the present utility model adopts the following technical solutions:

A multi-layer anti-corrosion stainless steel wire includes a wire core, an intermediate coating and a passivation protective film; the intermediate coating is located on the outer circle of the wire core and is fixedly connected with the wire core; the passivation The protective film is located on the outer circle of the intermediate plating layer, and is fixedly connected with the intermediate plating layer;

The intermediate plating layer includes an inner layer and an outer layer, the inner layer is located on the outer circle of the wire core, and adopts a nickel-plated layer; the outer layer is located on the inner wall of the passivation protective film, and adopts a chrome-plated layer.

Further, the passivation protective film is provided with two layers, the inner side is a chromium oxide layer, and the outer side is an iron oxide layer.

Further, the thickness of the intermediate plating layer is not more than 5um.

Further, the thickness of the nickel plating layer is greater than the thickness of the chromium plating layer.

Further, the thickness of the chromium plating layer is not greater than 1.5um.

The beneficial effects of the utility model are as follows: the multi-layer anti-corrosion stainless steel wire provided by the utility model utilizes the nickel-plated layer on the outer circle of the wire core to improve the bonding force between the outer layer and the wire core, reduce the stress, and at the same time the outer layer is chrome-plated The layer can be oxidized to form dense chromium oxide during passivation to protect the wire, and high-order chromium ions can be reduced or eliminated in the passivation solution, improving environmental protection.

Description of drawings

Figure 1 is a cross-sectional view of a preferred embodiment of the present invention.

Among them: 1. Wire core, 2. Intermediate coating, 3. Passivation protective film, 4. Inner layer, 5. Outer layer, 6. Chromium oxide layer, 7. Iron oxide layer.

Detailed ways

In order to understand the technical solutions provided by the present invention more clearly, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in the accompanying drawings, a multi-layer anti-corrosion stainless steel wire rod provided by the present invention includes a wire core 1, an intermediate coating layer 2 and a passivation protective film; the intermediate coating layer 2 is located on the outer circle of the wire core 1. , and is fixedly connected with the wire core 1; the passivation protective film 3 is located on the outer circle of the intermediate plating layer 2, and is fixedly connected with the intermediate plating layer 2;

The intermediate plating layer 2 includes an inner layer 4 and an outer layer 5, the inner layer 4 is located on the outer circle of the wire core 1, and a nickel-plated layer is used; the outer layer 5 is located on the passivation protective film 3. Chrome plating is used on the inner wall.

Further, the passivation protective film 3 is provided with two layers, the inner side is the chromium oxide layer 6 and the outer side is the iron oxide layer 7 .

Further, the thickness of the intermediate plating layer 2 is not more than 5um.

Further, the thickness of the nickel plating layer is greater than the thickness of the chromium plating layer.

Further, the thickness of the chromium plating layer is not more than 1.5um.

Claims (5)

1. A multilayer corrosion-resistant stainless steel wire is characterized by comprising a wire core, an intermediate coating and a passivation protective film; the middle plating layer is positioned on the excircle of the wire core and is fixedly connected with the wire core; the passivation protective film is positioned on the excircle of the middle plating layer and is fixedly connected with the middle plating layer;

the middle plating layer comprises an inner layer and an outer layer, the inner layer is positioned on the outer circle of the wire core, and a nickel plating layer is adopted; the outer layer is positioned on the inner wall of the passivation protective film and adopts a chromium coating.

2. The multi-layer corrosion-resistant stainless steel wire according to claim 1, wherein the passivation film has two layers, an inner layer of chromium oxide and an outer layer of iron oxide.

3. The multi-layered corrosion-resistant stainless steel wire according to claim 1, wherein the thickness of said intermediate plating layer is not more than 5 μm.

4. The multi-layered corrosion-resistant stainless steel wire according to claim 1, wherein the thickness of said nickel plating layer is greater than the thickness of said chromium plating layer.

5. A multi-layered corrosion resistant stainless steel wire as set forth in claim 4, wherein said chromium plating layer has a thickness of not more than 1.5 μm.

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