Are stainless steel products really stainless? This question is definitely negative. The main material of stainless steel products is stainless steel. Although the name stainless steel does not seem to rust, many people also have experience. Will not rust over the years. It depends on the specific material of stainless steel products. There are also many types of stainless steel, such as commonly used 201 stainless steel, 304 stainless steel, and 316 stainless steel. These different materials have different contents of nickel, chromium, manganese. etc., and the ability to resist rust also differs only in different ways.
Stainless steel products
The stainless steel used in stainless steel products actually contains a lot of iron elements. The reason why it is not easy to rust is because it is alloyed with a large amount of chromium, nickel, titanium, etc. These added elements themselves have a very good anti-corrosion function, forming a protective film - a passive film that prevents stainless steel from rusting. steel. However, the prices of these metals are very high, and these metals are rarely used for the direct manufacture of products. Stainless steel can fuse these elements together, is itself highly resistant to rust, and the price is also very low.
Since stainless steel products do rust, how can we change our minds to prevent them from rusting? First of all, when we make stainless steel products, we must determine the appropriate material according to the conditions of use. If the equipment is often soaked in nautical miles, use 316 to hold on. If it is outdoors, 304 would be better. If the room is not damp and will not be exposed to acidic and alkaline solvents, 201 stainless steel can be used directly. After all, the price is relatively lower. In addition, in the daily cleaning and maintenance of stainless steel products, if you need to use a detergent, it is recommended to use a neutral one.
Stainless steel products
Reason for rust on stainless steel products:
1. The rusting of stainless steel products is actually an oxidation process, and the reason it can avoid rust is because there is a layer of material on the surface, similar to a protective film. If the protective film is damaged, it will cause rust. There are many ways to damage the protective film, including scratches on the surface with sharp objects, penetration of acidic and alkaline substances, etc., which can damage the protective film and cause stainless steel products to rust.
How to remove rusty stainless steel items:
1. If the time is not very long, first see if you can negotiate with the manufacturer, because stainless steel factories have professional rust removal tools that are very quick and convenient to clean.
2. Of course, if the rust area of the product is small, it really is not worth buying a grinding, drawing or polishing machine, so it is recommended to use alkali, alkali chloride or bleach-free cleaning detergent. Then it is necessary to clean the cleaned part of the stainless steel product with clean water, and the sooner it is dried, the better. After wiping the equipment dry, allow it to dry naturally as oxygen can protect the passive stainless steel film.
Stainless steel products
3. If you need to remove the rust by yourself, the first thing we should pay attention to is whether the surface of the stainless steel products is mirror or matte. If it's brushed, then it's better to deal with it. Buy a brushed fabric from the factory and run it through some hard stuff first, or buy a sander for sanding. Then use the drawing cloth to stretch the wire. You need to pay attention to the wire drawing direction. Do not draw vertical wire on horizontally stretched stainless steel products, so that the surface is the same as a new one. As for the mirror surface, you need to buy another polishing machine to polish the surface after polishing, but the hand polishing effect is not good, so everyone has a psychological preparation.
Stainless steel products are now widely used, but many people who are not familiar with it think that it will not rust because of the misleading name, which is a misconception. However, the stainless steel products themselves have strong corrosion resistance, and the corrosion resistance varies with different materials. For example, if 201 is used in some acid-base environment for a long time, it will rust in a short time, while 304 however, higher concentrations still cause rust. 316 is less susceptible to rust than 304, so it is often used in the manufacture of medical equipment. We can choose stainless steel from various materials according to our own use conditions, and avoid rust.