阅读说明：本技术 一种环保型金黄色奥氏体不锈钢的制造方法 (Manufacturing method of environment-friendly golden austenitic stainless steel ) 是由 冯翰秋 屈华鹏 陈海涛 郎宇平 于 2019-12-16 设计创作，主要内容包括：一种环保型金黄色奥氏体不锈钢的制造方法,不锈钢材料表面改性技术领域。步骤为：将不锈钢放入无水乙醇中超声波清洗除油；所得不锈钢使用400-1200号水砂纸依次打磨,之后进行机械抛光处理；所得不锈钢放置在无水乙醇中进行超声波清洗除油；对所得不锈钢放置在马弗炉中加热10～60min,加热温度为600～700℃,冷却方式为空冷；所得不锈钢试验放入1％硅酸钠水溶液中浸泡5～15min,取出后用去离子水清洗,干燥。优点在于,生产工艺简单、生产周期短、颜色稳定可控、能耗成本低、环保无污染,适用于批量生产；获得的不锈钢,表面氧化膜层比较稳定,颜色光亮均匀且重现性好,具有良好的表面硬度和耐磨性。(A method for manufacturing environment-friendly golden austenitic stainless steel, belonging to the technical field of surface modification of stainless steel materials. The method comprises the following steps: putting stainless steel into absolute ethyl alcohol for ultrasonic cleaning and oil removal; sequentially grinding the stainless steel by using 400-1200 # water sand paper, and then performing mechanical polishing treatment; the obtained stainless steel is placed in absolute ethyl alcohol for ultrasonic cleaning and oil removal; placing the stainless steel in a muffle furnace to be heated for 10-60 min, wherein the heating temperature is 600-700 ℃, and the cooling mode is air cooling; and (3) putting the stainless steel into a 1% sodium silicate aqueous solution for soaking for 5-15 min, taking out, washing with deionized water, and drying. The method has the advantages of simple production process, short production period, stable and controllable color, low energy consumption cost, environmental protection, no pollution and suitability for batch production; the obtained stainless steel has stable surface oxide film layer, bright and uniform color, good reproducibility, and good surface hardness and wear resistance.)

1. The manufacturing method of the environment-friendly golden austenitic stainless steel is characterized by comprising the following specific process steps and controlled technical parameters:

(1) putting stainless steel into absolute ethyl alcohol for ultrasonic cleaning and oil removal;

(2) sequentially grinding the stainless steel obtained in the step (1) by using 400-1200 # water sand paper, and then performing mechanical polishing treatment;

(3) placing the stainless steel obtained in the step (2) in absolute ethyl alcohol for ultrasonic cleaning and oil removal;

(4) placing the stainless steel obtained in the step (3) in a muffle furnace to be heated for 10-60 min, wherein the heating temperature is 600-700 ℃, and the cooling mode is air cooling;

(5) and (4) placing the stainless steel obtained in the step (4) into a 1% sodium silicate aqueous solution for soaking for 5-15 min, taking out, cleaning with deionized water, and drying to obtain the golden austenitic stainless steel.

2. The method of claim 1, wherein: in the step (1), the ultrasonic cleaning temperature is 40-60 ℃, and the cleaning time is 10-30 min.

3. The method of claim 1, wherein: in the step (3), the ultrasonic cleaning temperature is 20-40 ℃, and the cleaning time is 5-15 min.

4. The method of making a golden austenitic stainless steel of claim 1, wherein: in the step (5), the pH value of the 1% sodium silicate aqueous solution is 5-6, and the temperature is 80-90 ℃.

Technical Field

The invention belongs to the technical field of surface modification of stainless steel materials, and particularly relates to a manufacturing method of environment-friendly golden austenitic stainless steel.

Background

With the development of socio-economy, the living demand of people is increasing, the demand of stainless steel is no longer limited to its own excellent performance, but rather focuses more on the decoration and artistry of stainless steel, and the coloring technology of colored stainless steel is beginning to be paid attention to widely. Austenitic stainless steel is an important steel type of stainless steel, and is widely used in various fields such as chemical industry, energy, construction, transportation, daily use home and the like because of its excellent corrosion resistance, wear resistance, toughness and processability. The austenitic stainless steel is colorized, so that the ornamental value is greatly increased on the basis of ensuring the excellent performance of the austenitic stainless steel, and the colorized austenitic stainless steel has excellent performances in the aspects of building outer walls, artistic sculptures, relief fresco, home decoration and the like.

The common surface coloring method for austenitic stainless steel at present comprises a physical vapor deposition method, a chemical coloring method, an electrochemical coloring method, an organic coating coloring method and the like. Among them, the chemical coloring method (INCO method) and the electrochemical coloring method are mainly used as the coloring method of austenitic stainless steel due to their mature and simple process flow and color diversity of finished products. However, the coloring liquid of the chemical coloring method contains hexavalent chromium ions, which causes great harm to human bodies and the environment and has poor color reproducibility; the more environment-friendly electrochemical coloring method has the disadvantages of higher cost, uneven coloring effect and the like, and can only be used for stainless steel parts with simple shapes and small specifications. Therefore, it is important to find a new environment-friendly and low-cost method for coloring austenitic stainless steel.

Disclosure of Invention

The invention aims to provide a method for manufacturing environment-friendly golden austenitic stainless steel, which solves the problems of high cost, non-uniform coloring effect and the like of an electrochemical coloring method. The preparation method realizes the preparation of the golden austenitic stainless steel with simple production process, short period, stable and controllable color, low energy consumption and cost, environmental protection and no pollution.

The invention adopts the principle of oxide film interference, and controls the type, the appearance and the thickness of the oxide film on the surface of the stainless steel by adjusting heat treatment parameters, thereby leading the transparent oxide film on the surface of the stainless steel to generate color under the interference of natural light. The specific process steps and the controlled technical parameters are as follows:

(1) putting stainless steel into absolute ethyl alcohol for ultrasonic cleaning and oil removal;

(2) sequentially grinding the stainless steel obtained in the step (1) by using 400-1200 # water sand paper, and then performing mechanical polishing treatment;

(3) placing the stainless steel obtained in the step (2) in absolute ethyl alcohol for ultrasonic cleaning and oil removal;

(4) placing the stainless steel obtained in the step (3) in a muffle furnace to be heated for 10-60 min, wherein the heating temperature is 600-700 ℃, and the cooling mode is air cooling;

(5) and (4) placing the stainless steel obtained in the step (4) into a 1% sodium silicate aqueous solution for soaking for 5-15 min, taking out, cleaning with deionized water, and drying to obtain the golden austenitic stainless steel.

The ultrasonic cleaning temperature in the step (1) is 40-60 ℃, and the cleaning time is 10-30 min.

The ultrasonic cleaning temperature in the step (3) is 20-40 ℃, and the cleaning time is 5-15 min.

In the step (5), the pH value of the 1% sodium silicate aqueous solution is 5-6, and the temperature is 80-90 ℃.

The invention has the beneficial effects that:

the method for preparing the environment-friendly golden austenitic stainless steel has the following advantages that:

(1) the method has the advantages of simple production process, short production period, stable and controllable color, low energy consumption and cost, environmental protection, no pollution and suitability for batch production;

(2) the invention is suitable for austenitic stainless steel products with various specifications and capable of being mechanically polished, and the shape and the size of the austenitic stainless steel are not changed;

(3) the golden austenitic stainless steel obtained by the method has the advantages of stable surface oxide film layer, bright and uniform color, good reproducibility, and good surface hardness and wear resistance.

Detailed Description

The present invention is described below with reference to specific examples, which are provided for illustration only and are not intended to limit the scope of the present invention.