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Anonymous users2024-01-241. Friction spark identification method: 304 material and 202 material are used respectively, and the sparks generated are placed in the high-speed rotating grinder to see the sparks, due to the high temperature of friction, the number of sparks produced when various elements are oxidized, the shape is bifurcated, etc., to identify the chemical composition and approximate content of the material.
2. Stainless steel potion identification method: you can buy it from stainless steel accessories stores (such as Jiangtou Fansheng and Xin Yongsheng), and the unit price is 15 yuan a bottle. Put the stainless steel identification potion on different materials, you can distinguish it in two to three minutes, and different colors will be displayed, and then refer to the manual for comparison.
The above two are the simplest and most effective identification methods.
3.Surface observation, first look at the surface to see if there is rust, if there is no rust, it can be determined that it is stainless steel, but it cannot be concluded from this.
4.Potion testing, there are materials on the market to test water, after dripping, different colors correspond to different materials, it is very simple and convenient, you can roughly judge which type of stainless steel material it is.
5.Grinding detection, grinding the grinding wheel to see the state of the spark, this method needs to be identified by experienced people.
6.Spectral detection, instrument identification is the safest and most accurate method. First, the surface is beaten off with a grinder, but the surface must be smooth and then beaten with a spectrum, which can read the metal elements in the material in detail, and then compare the material, this method is the most reliable and authoritative.
The welding wire should be made of 304, and the solder joints should be polished and polished, and generally will not rust. To do anti-theft nets, I have seen the Xiyouwo stainless steel pipe and then decided.
It is authentic stainless steel and will not rust.
It is installed in Bamberg, the process is very fine, corrosion-resistant, and the inferior stainless steel is not corrosion-resistant and easy to rust, so you must look at the brand and material when choosing in the store.
Your home is 201 stainless steel, 201 stainless steel is easy to rust, now a little better are made of 304 stainless steel, that is, medical scalpels, high-end Western restaurant knives and forks of the kind of steel, never rusty, personal use of Bamberg stainless steel cabinets is 304, used for a few years, whether it is bumped or scratched, there is no oxidation, and stainless steel waterproof and moisture-proof is much better than solid wood.