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Anonymous users2024-02-11Hardware stores and building materials markets are available.
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Anonymous users2024-02-10People often think that magnets adsorb stainless steel, verify their advantages and disadvantages, and verify their authenticity, do not absorb non-magnetic, think that it is good, genuine; If the smoker is magnetic, it is considered to be a fake. In fact, this is an extremely one-sided and unrealistic way of discerning errors.
There are many types of stainless steel, which can be divided into several categories according to the organizational structure at room temperature:
1. Austenite body type: such as etc.;
2. Martensite or ferrite type: such as etc.;
The austenite type is amagnetic or weakly magnetic, and the martensitic or ferrite is magnetic.
As mentioned above, austenite is non-magnetic or weakly magnetic, while martensitic or ferrite is magnetic, due to improper segregation or heat treatment during smelting, it will cause a small amount of martensitic or ferrite structure in austenite 304 stainless steel. In this way, there will be a weak magnetic property in 304 stainless steel.
In addition, after cold working, the microstructure of 304 stainless steel will also be transformed to martensitic, and the greater the deformation degree of cold working, the more martensitic transformation, and the greater the magnetic property of the steel. Like a batch of steel strips, 76 tubes are produced, and there is no obvious magnetic inductance, and tubes are produced. Due to the large deformation of the bend, the magnetic induction is more obvious, and the deformation of the square rectangular pipe is larger than that of the round pipe, especially the corner part, the deformation is more intense, and the magnetic induction is more obvious.
In order to completely eliminate the magnetism of 304 steel caused by the above reasons, the austenite structure can be stabilized by high-temperature solution treatment, so as to eliminate the magnetism.
In particular, it should be mentioned that the magnetism of 304 stainless steel caused by the above reasons is not at the same level as that of stainless steel made of other materials, such as 430 and carbon steel, that is to say, the magnetism of 304 steel always shows weak magnetism.
This tells us that if the stainless steel strip is weakly magnetic or not magnetic at all, it should be judged as 304 or 316 material; If it is the same as the magnetism of carbon steel, it shows strong magnetism, because it is not 304 material. At the same time, in terms of chemical composition, nickel is used as a weight index, and 304 and 316 contain more than 8% nickel, because nickel is as magnetic as iron, which will also bring conditions for its weak magnetism. Therefore, please rest assured that the 304 steel wire produced by our company is all national standard products, all of which have been inspected by the inspection department, please rest assured to use, and at the same time, you can use the potion or other methods equipped by the company as an inspection and comparison identification, and give consumers a clear indication to eliminate doubts!
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Anonymous users2024-02-09The size of the 304 deformation will affect the magnetism, as long as the material composition is fine.
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