阅读说明：本技术 一种船用舵杆的表面处理工艺 (Surface treatment process for marine rudder stock ) 是由 顾妹英 于 2019-12-17 设计创作，主要内容包括：本发明公开了一种船用舵杆的表面处理工艺,包括如下步骤：除油→酸洗→装夹定位→清洗→电镀镀铬→二次清洗→卸夹→回火处理→抛光→检验→包装入库；其中,所述电镀镀铬时的电流为24A-30A,电镀时间为25-30min,电镀液由铬酸、硫酸、草酸和去离子水组成,所述电镀液中铬酸的浓度为105-115g/L,所述铬酸、硫酸和草酸的质量比为100:1:0.5。通过上述方式,本发明能够提高船用舵杆的耐磨损能力和耐腐蚀性能,大大延长船用舵杆的使用寿命,降低船用舵杆的检修和维护成本,提高安全性。(The invention discloses a surface treatment process of a marine rudder stock, which comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; the current during electroplating chromium plating is 24-30A, the electroplating time is 25-30min, the electroplating solution is composed of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is 100:1: 0.5. Through the mode, the marine rudder stock has the advantages that the abrasion resistance and the corrosion resistance of the marine rudder stock can be improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.)

1. A surface treatment process of a marine rudder stock is characterized by comprising the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; wherein the current during electroplating chromium plating is 24A-30A, the electroplating time is 25-30min, the electroplating solution consists of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is (95-105) to 1: 0.5.

2. The surface treatment process of a rudder stock for ships according to claim 1, wherein the thickness of the chrome plating is 8 to 12 μm.

3. The surface treatment process for a rudder stock for ships according to claim 1, wherein the temperature of the plating solution is 43 to 47 ℃.

4. The surface treatment process of the marine rudder stock according to claim 1, wherein the tempering treatment is performed at 660 to 680 ℃ for 55 to 60 min.

5. Surface treatment process of marine rudder stock according to claim 1, characterised in that the polishing is electrolytic polishing.

6. The surface treatment process of a marine tiller according to claim 5, wherein the electrolyte during electrolytic polishing is phosphoric acid-chromic anhydride electrolyte.

7. The surface treatment process for a marine tiller according to claim 5, wherein the current density at the time of electrolytic polishing is 0.8A/cm²。

8. The surface treatment process of the marine rudder stock according to claim 6, wherein the temperature of the electrolyte during the electrolytic polishing is 53-57 ℃.

Technical Field

The invention relates to the field of machine manufacturing, in particular to a surface treatment process of a marine rudder stock.

Background

The rudder stock is a shaft for rotating the rudder blade and is used for bearing and transmitting force acting on the rudder blade and force given to the rudder steering device by the rudder, namely the rudder blade is rotated by the rudder stock, and the rudder blade bears reaction force of water to the rudder blade so as to steer the ship. The rudder stock belongs to a key part in the ship, and once failure occurs in the working process, the consequence is not supposed to be.

The rudder stock is easy to deform and corrode after being soaked in seawater for a long time and belongs to a wearing part, so that the rudder stock needs to be checked, maintained and repaired regularly, but the maintenance and the repair of the rudder stock are time-consuming and labor-consuming and difficult to meet the requirement of a ship stage.

Disclosure of Invention

The invention mainly solves the technical problems that: aiming at the defects of the prior art, the surface treatment process for the marine rudder stock is provided, so that the abrasion resistance and the corrosion resistance of the marine rudder stock can be improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.

In order to solve the technical problems, the invention adopts a technical scheme that: the surface treatment process of the marine rudder stock comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; wherein the current during electroplating chromium plating is 24A-30A, the electroplating time is 25-30min, the electroplating solution consists of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is (95-105) to 1: 0.5.

In a preferred embodiment of the invention, the thickness of the chromium plating is 8-12 μm.

In a preferred embodiment of the present invention, the temperature of the plating solution is 43 to 47 ℃.

In a preferred embodiment of the invention, the temperature during the tempering treatment is 660-680 ℃ and the time is 55-60 min.

In a preferred embodiment of the invention, the polishing is electropolishing.

In a preferred embodiment of the present invention, the electrolyte during the electrolytic polishing is a phosphoric acid-chromic anhydride electrolyte.

In a preferred embodiment of the present invention, the current density during the electrolytic polishing is 0.8A/cm²。

In a preferred embodiment of the present invention, the temperature of the electrolyte during the electrolytic polishing is 53 ℃ to 57 ℃.

The invention has the beneficial effects that: by optimizing the surface treatment process and adopting the electroplating chromium plating process, the current and the electroplating time during electroplating chromium plating are controlled, the proportion of electroplating liquid is optimized, the wear resistance and the corrosion resistance of the marine rudder stock are improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.

The embodiment of the invention comprises the following steps: