Copper-nickel-chromium coating stripping solution

Abstract

The invention discloses a copper-nickel-chromium coating stripping solution which is characterized by comprising the following components: 216-220 g / L of sodium nitrate, 252-256 g / L of ammonium acetate, 18-22 g / L of sodium sulfate and the balance of deionized water. The formula is simple, the machining and manufacturing cost can be reduced easily, meanwhile, a copper-nickel-chromium coating can be rapidly removed, too large damage cannot be caused to matrix stainless steel, follow-up film coating machining is facilitated, use stability is improved easily, and practicability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of stripping, and in particular relates to a copper-nickel-chromium plating stripping liquid. Background Art

[0002] Stainless steel coating technology is widely used in the industrial field due to its excellent appearance and corrosion resistance. In some cases, the coating layer needs to be stripped. For example, due to accidental factors in the production process, the plated film does not meet the quality requirements. In order to reduce damage and save costs, it is necessary to strip the coating layer and re-coat the workpiece. Or in order to make the surface of the workpiece present the required pattern, text or trademark, it is necessary to partially strip the coating layer.

[0003] The prior art requires the use of a deplating solution during deplating. Although the prior art deplating solution can meet general usage requirements, it is also prone to corrode the base stainless steel during deplating, causing damage to the stainless steel and affecting the quality of subsequent re-plating, so its practicality is limited. Summary of the invention

[0004] The invention aims to provide a copper-nickel-chromium plating stripping solution which has a simple formula and is not prone to damaging a substrate.

[0005] The technical solution for achieving the purpose of the present invention is a copper-nickel-chromium plating stripping solution, which includes the following components: 216-220 g / L of sodium nitrate, 252-256 g / L of ammonium acetate, 18-22 g / L of sodium sulfate, and the rest is deionized water.

[0006] More preferably, the sodium nitrate is 218 g / L.

[0007] More preferably, the ammonium acetate is 254 g / L.

[0008] More preferably, the sodium sulfate is 20 g / L.

[0009] The invention has positive effects: the formula of the invention is simple, which is beneficial to reducing the processing and manufacturing cost; at the same time, the invention can quickly remove the copper-nickel-chromium plating layer without causing too much damage to the base stainless steel, thereby facilitating the subsequent re-plating processing, improving the stability of use, and having strong practicality. DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] A copper-nickel-chromium plating stripping solution includes the following components: 216-220 g / L sodium nitrate, 252-256 g / L ammonium acetate, 18-22 g / L sodium sulfate, and the rest is deionized water. In actual application, the sodium nitrate is 218 g / L, the ammonium acetate is 254 g / L, and the sodium sulfate is 20 g / L.

[0012] The invention has positive effects: the formula of the invention is simple, which is beneficial to reducing the processing and manufacturing cost; at the same time, the invention can quickly remove the copper-nickel-chromium plating layer without causing too much damage to the base stainless steel, thereby facilitating the subsequent re-plating processing, improving the stability of use, and having strong practicality.

[0013] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A copper-nickel-chromium plating stripping solution, characterized in that: It includes the following components: sodium nitrate 216-220g / L, ammonium acetate 252-256g / L, sodium sulfate 18-22g / L, and the rest is deionized water.

2. The copper-nickel-chromium plating stripping solution according to claim 1, characterized in that: The sodium nitrate is 218g / L.

3. The copper-nickel-chromium plating stripping solution according to claim 2, characterized in that: The ammonium acetate is 254g / L.

4. The copper-nickel-chromium plating stripping solution according to claim 3, characterized in that: The sodium sulfate is 20 g / L.