As a professional processing factory with over 15 years of experience in the precision processing industry, Weimi has high standards of processing quality, top-of-the-range surface treatment technology, and a highly specialized team. Over the years, we’ve built our reputation on our ability to satisfy our customers’ needs and requirements in any industry – and now, more than 95% of our orders are exported to clients all over the world.
One of our most popular treatments is electroplating: this is the process of adding a shiny chrome/silver-coloured finish to parts and components (usually steel parts). We’re able to control the quality and thickness of the plating to ensure 100% customer satisfaction, every time!
We often apply the following electroplating methods:
Zinc plating: Zinc plating refers to a surface treatment technique that coats a layer of zinc onto the surface of a metal, alloy, or other material and is usually done for aesthetic benefits or rust prevention, though may have additional benefits depending on the thickness of the coating. This has become a very popular method throughout the machinery manufacturing, electronics, precision instruments, and aerospace industries.
After the parts are completed, it is necessary to soak them in oil to avoid the raw materials from anodizing or rusting through exposure to air as this is not conducive to the subsequent galvanizing process. Once they are ready to be galvanised, they are dried and sent to the processing department where the process begins.
After the galvanizing process is completed, the quality control department inspects the size and appearance of the parts, and if they pass the inspection they enter the packaging department for packaging and shipping to the client.
Nickel plating: This is the method of plating a layer of nickel on metal (or some non-metals) by electrolysis or chemical methods. There are two ways to do this: electroplating and electroless nickel plating. Electroplating uses an electrolyte composed of nickel salt (called the main salt), conductive salt, pH buffer, and lubricant. The anode uses metal nickel, and the cathode is a plating piece. With direct current, a uniform and dense nickel coating is deposited on the cathode (plating piece). The colour intensity of the nickel can be reduced by using a bath of lightener, or if the colour needs to be more bold, the nickel will be used directly.
Electroless Nickel: Chemical plating is also known as electroless plating or auto-catalytic plating. As one of the fastest-growing electroless plating methods, the coatings show superiority in uniformity, corrosion resistance, hardness, weldability, magnetic properties, and decorative properties.
Chrome plating: Chromium is a kind of micro blue-silver white metal, that is easy to use and can be passivated in the air, forming a very thin passivating film on the surface of the product and giving the appearance of precious metals. Chrome plating has a high hardness, good heat resistance, and a low coefficient of friction – especially the dry friction coefficient, which is the lowest of all metals. Chrome plating layers have good wear resistance and also excellent chemical stability.
Titanium plating: Titanium plating requires a high temperature, vacuum titanium furnace, titanium, and zirconium metal. The metal or alloy vapor is ionized by glow discharge of inert gas, and the ions are deposited on the negatively charged stainless steel plate by electric field acceleration, thus forming a colourful metal film.
Vacuum coating: Vacuum coating is an important aspect of vacuum application. On the surface of some materials, as long as a thin film is plated, many new and good physical and chemical properties can be obtained. General metal instruments, cutting tools, precision instruments and other industrial products often need vacuum coating after machining. If a client doesn’t specifically mention it, we will confirm first whether the salt spray test is necessary according to the customer’s application field and the structure of the CNC parts.
To find out more about our services and get a quote for electroplating, please fill in our contact form and a member of the team will be in touch.