Screws are commonly used things, mainly used to connect and fasten various parts. In fact, screws are divided into many kinds of parts: bolts, screws, studs, nuts, machine screws, self-tapping screws, washers, pins, rivets, retaining rings and other ten categories. Screws actually face some oxidation and corrosion problems. Usually Use the method of electroplating to solve, let's take a look at what kind of effects different electroplating processes have and how to distinguish them.
Hexagon Head Bolts
How to distinguish between stainless steel screws, galvanized and nickel-plated screws? The most intuitive is to distinguish by color:
1. Stainless steel is the primary color of iron. Stainless steel screws are made of stainless steel. The color of stainless steel is mainly an alloy of iron and carbon, so the color is close to that of iron;
2. Galvanized screws are white, colorful and black. The surface of galvanized screws is galvanized with white zinc, color zinc, black zinc, etc., so the color of galvanized screws is generally white, color, and black;
3. The nickel-plated screws are silver. The color of nickel-plated screws is related to nickel, and generally presents a very bright silver.