What are the characteristics of imported wear-resistant plates relative to ordinary wear-resistant plates
There is no life in the production of wear-resistant plate figure, the application is very wide, especially the imported wear-resistant plate is favored, what is the reason? Here we introduce the main characteristics of imported wear-resistant plates that are different from other wear-resistant plates.
1. Weldability
Different product uses have different requirements for welding performance. A class of tableware generally does not require welding performance, even including some pot enterprises. However, the vast majority of products need raw materials with good welding performance, such as second-class tableware, thermos cups, steel pipes, water heaters, drinking fountains and so on.
2. Wear resistance
The vast majority of wear-resistant plate products require good corrosion resistance, such as one or two types of tableware, kitchenware, water heaters, drinking fountains, etc. Some foreign businessmen also do corrosion resistance tests on products: warm to boiling with NACL solution, dump the solution after a period of time, wash and dry, and call the weight loss to determine the degree of corrosion (Note: when polishing products, Because the emery cloth or sandpaper contains Fe components, it will lead to rust spots on the surface of the test.
3. Polishing performance
In today's society, wear-resistant plate products are generally polished in the production process, only a few products such as water heaters, water dispensers, etc., do not need polishing. Therefore, this requires that the polishing properties of raw materials are very good. The main factors that affect the polishing performance are as follows:
① Surface defects of raw materials. Such as scratches, pitting, pickling, etc.
② Raw material problem. The hardness is too low, and it is not easy to polish when polishing (BQ is not good), and the hardness is too low, and the orange peel phenomenon is easy to appear on the surface when the deep drawing, thus affecting the BQ property. BQ with high hardness is relatively good.
③ After deep stretching of the product, the surface of the area with great deformation will also produce small black spots and RIDGING, thus affecting the BQ property.
4. Heat resistance
Heat resistance refers to the wear-resistant plate can still maintain its excellent physical and mechanical properties at high temperatures. Carbon effect: Carbon is strongly formed and stable in austenitic wear-resistant plates. Elements that define and expand austenitic regions. The ability of carbon to form austenite is about 30 times that of nickel, carbon is a kind of interstitial element, and the strength of austenite wear-resistant plate can be significantly improved by solution strengthening. Carbon can also improve the stress and corrosion resistance of austenitic wear plates in highly concentrated chlorides (such as 42%MgCl2 boiling solution).
5. Corrosion resistance
When the number of chromium atoms in steel is not less than 12.5%, the electrode potential of steel can be changed dramatically, from negative potential to positive electrode potential. Prevent electrochemical corrosion.
