Gün: 18 Ağustos 2023

Material Surface Treatment Process

Blog Details Surface treatment is a method of artificially forming a surface layer on the surface of a base material with  mechanical, physical and chemical properties different from that of the base. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. Commonly used surface treatment processes include: vacuum electroplating, electroplating process, anodizing, electrolytic polishing, pad printing process, galvanizing process, powder coating, water transfer printing, screen printing, electrophoresis, etc.   ①Vacuum plating Vacuum plating is a physical deposition phenomenon. That is, argon gas is injected in a vacuum state, and the argon gas hits the target material, and the target material is separated into molecules that are adsorbed by conductive goods to form a uniform and smooth imitation metal surface layer. Process cost: In the process of vacuum plating, the workpiece needs to be sprayed, loaded, unloaded and re-sprayed, so the labor cost is quite high, but it also depends on the complexity and quantity of the workpiece.   ②Electropolishing   Electropolishing is an electrochemical process in which atoms of a workpiece immersed in an electrolyte are converted into ions and removed from the surface due to the passage of an electric current, thereby achieving the effect of removing fine burrs and increasing the brightness of the workpiece surface. Process cost: The whole process of electrolytic polishing is basically completed automatically, so the labor cost is very low. Environmental impact: Electrolytic polishing uses less harmful chemicals. The whole process requires a small amount of water and is easy to operate. In addition, it can prolong the properties of stainless steel and delay corrosion of stainless steel.   ③Galvanizing process A surface treatment technology that coats a layer of zinc on the surface of steel alloy materials for aesthetics and anti-rust effects. The zinc layer on the surface is an electrochemical protective layer that can prevent metal corrosion. The main methods used are hot-dip galvanizing and Galvanized. Process cost: no mold cost, short cycle/medium labor cost, because the surface quality of the workpiece largely depends on the manual surface treatment before galvanizing.   ④Electroplating process The process of attaching a layer of metal film to the surface of parts by electrolysis, so as to prevent metal oxidation, improve wear resistance, conductivity, light reflection, corrosion resistance and enhance aesthetics. The outer layer of many coins is also electroplated. . Process cost: no mold cost, but fixtures are required to fix the parts / time cost depends on temperature and metal type / labor cost (medium-high), depends on the type of specific plating parts, such as silverware and jewelry plating requires extremely It is operated by highly skilled workers because of its high requirements on appearance and durability.   ⑤Water transfer printing It is a way to print the color pattern on the transfer paper on the surface of the three-dimensional product by using water pressure. With the improvement of people’s requirements for product packaging and surface decoration, the use of water transfer printing is becoming more and more extensive. Process cost: There is no mold cost, but multiple products need to be water-transferred at the same time using fixtures, and the time cost generally does not exceed 10 minutes per cycle.   ⑥Screen printing Through the extrusion of the scraper, the ink is transferred to the substrate through the mesh of the graphic part, forming the same graphic as the original. Screen printing equipment is simple, easy to operate, easy to print and plate-making, with low cost and strong adaptability. Process cost: The mold cost is low, but it still depends on the number of colors, because each color needs to be plate-made separately. Labor costs are high, especially when it comes to multi-color printing.   ⑦Anodizing  The anodic oxidation of aluminum is mainly based on the electrochemical principle to form a layer of Al2O3 (aluminum oxide) film on the surface of aluminum and aluminum alloy. This layer of oxide film has special characteristics such as protection, decoration, insulation, and wear resistance. Process cost: In the production process, the consumption of water and electricity is quite large, especially in the oxidation process. The heat consumption of the machine itself needs to be continuously cooled by circulating water, and the power consumption per ton is often around 1000 degrees.   ⑧Metal wire drawing It is a surface treatment method that forms lines on the surface of the workpiece by grinding the product to achieve a decorative effect. According to the different textures after wire drawing, it can be divided into: straight wire drawing, chaotic wire drawing, corrugated, and swirling. Process cost: The process method is simple, the equipment is simple, the material consumption is very little, the cost is relatively low, and the economic benefit is high.   ⑨In-mold decoration It is a molding method that puts the pattern-printed diaphragm into the metal mold, injects the resin for molding into the metal mold and joins the diaphragm, and makes the pattern-printed diaphragm and the resin integrated and solidified into a finished product. Process cost: only need to open a set of molds, which can reduce costs and man-hours, high-automatic production, simplified manufacturing process, one-time injection molding method, and achieve molding and decoration at the same time.   If you have any needs about metal manufacturing services, welcome to contact us.   Tags: Social Network: Recently Posts Online Help! +(86) 0791-86372550 WANT TO DISCUSS IN DETAIL Contact Our Consultant Now CONTACT NOW