Detailed explanation of the causes of rust in Stone Garden Statues

stone carving is an ancient and inherited skill, which brings memories and infinite reveries. The quality of a Stone Carving depends on the skill of the designer. From the past stone sculpture to the current Stone Garden Statues, they have developed for centuries and passed down the craftsmanship of countless generations. Although the popular Stone Garden Statues are good in all aspects, there is also a problem that needs to be paid attention to, and that is rust. problems will seriously affect its appearance. What is the reason for this?

The stainlessness and corrosion resistance of stone sculpture are due to the formation of a chromium-rich oxide film (passivation film) on its surface. This kind of stainlessness and corrosion resistance are relative. Tests have shown that the corrosion resistance of steel in weak media such as the atmosphere, water, and oxidizing media such as nitric acid increases with the increase in the chromium water content in the steel. When the chromium content reaches a certain percentage, the corrosion resistance of the steel deteriorates. Mutation, that is, from easy to rust to not easy to rust, from not resistant to corrosion to corrosion resistant. There are many ways to classify Stone Garden Statues.
1. Specifications: Commonly used stone carving plates are divided into two types: 1 and 2. The actual composition is different, the quality is better, but the price is expensive and inferior. It is an imported stone carving board and a domestic stone carving board.
2. The composition is 17Cr-4.5Ni-6Mn-N, which is a Ni-saving steel type and a substitute steel for steel. It becomes magnetic after cold processing and is used in railway vehicles.
3. The composition is 18Cr-9Ni, which is the most widely used stone carving and heat-resistant steel. Used in food production equipment, Xitong chemical equipment, nuclear energy, etc.
4. the manganese content is high, the surface is very bright with dark brightness, and the manganese content is high and it is easy to rust. Containing more chromium, the surface is matte and does not rust. Put the two together to compare. The most important thing is that the corrosion resistance is different. The corrosion resistance is very poor, so the price is much cheaper. And because the nickel content is low, the price is lower, so the corrosion resistance is not as good as others.
5. The difference between nickel and nickel is the problem of nickel. Moreover, the price is relatively expensive now, usually close to 50,000 per ton, but it can at least guarantee that it will not rust during use.