304 stainless steel after cold processing, the structure of the structure will also change to martensite, and the greater the deformation degree of cold work, the more martensitic transformation, the greater the magnetic properties of steel. Like a lot of steel strips, the product is made up of 103 tubes, without obvious magnetic induction, producing 9.5 tubes. Due to the large deformation of the Ling bend, the magnetic sense is obvious, and the square tube produced by the utility model has larger deformation than the round tube, especially the folding part, the deformation is more intense, and the magnetism is more obvious. In order to completely eliminate the magnetic properties of the 304 steel caused by the above reasons, the stable austenite structure can be recovered by the solution treatment at high temperature so as to eliminate the magnetism. In particular, magnetic because it causes 304 stainless steel, and other materials such as stainless steel, carbon steel, magnetic 430 is not the same level, that is to say the magnetic steel 304 always showed a weak magnetic.
Q:What does "stainless steel pipe 201304" mean?
304 is a versatile stainless steel which is widely used in the manufacture of equipment and parts requiring good overall performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% chromium, more than 8% of the nickel content. 304 stainless steel is a brand of stainless steel produced according to the ASTM standard in the United states.
Q:Are stainless steel tubes and galvanized steel tubes the same?
Stainless steel management theory, the whole is not rusty, from the table to the material is stainless steel, no surface and internal.
Q:304 stainless steel, welded to seamless difference in what place?
Chemical composition of seamed pipe and seamless pipe are different. The production of seamless steel components only meets the basic requirements of astm. The production of seamed tube steel containing suitable for chemical composition of welding. For example, the mixing of silicon, sulfur, manganese, oxygen, and a certain proportion of elements such as the triangle ferrite can produce a welding flux which is easy to transfer heat during welding, so as to make the whole weld be welded well. The lack of steel pipe above the chemical components, such as seamless tube, can produce all kinds of unstable factors in the process of welding, welding and welding penetration is not easy.
Q:What is the difference between stainless steel tube 304L and 304N?
The lower carbon content minimizes the precipitation of carbides in the heat affected zone near the weld, while the precipitation of the carbides may lead to intergranular corrosion in stainless steels in certain environments.
Q:304 stainless steel will rust it?
Stainless steel is a very thin layer formed on the surface and the stability of the fine solid chromium rich oxide film (protective film), to prevent the infiltration of oxygen atoms, to oxidation, and the ability to obtain anti-corrosion. Once there are some reasons, this film was constantly destroyed, air or liquid oxygen atoms will continue to infiltrate or metal atoms of iron to keep out from the loose formation of iron oxide, the metal surface will be continuously corroded.
Q:Stainless steel pipes can not be less than the amount of chromium
The chromium content of stainless steel is generally not less than said first why stainless steel tube is not easy to rust 12%-304 stainless steel tube, then why stainless steel will rust stainless steel is not easy to have a great relationship with the composition of stainless steel rust. In addition to iron, stainless steel contains chromium, nickel, aluminum, silicon and so on.
Q:What kind of welding machine is used for welding thin stainless steel plate and stainless steel square tube?
1 mm thick enough, basically argon arc welding machine can, 0.2 thick stainless steel plate welding is not good ah, how have three or four points it can be positive or negative, only a few joints only, mainly to see the technology myself you, not what, the polishing wheel is on the line let's do it, you can buy a good quality of argon arc welding machine, the high price of the arc is stable
Q:Advantages and disadvantages of PPR lined stainless steel pipe and PPR aluminium plastic pipe
1 、 excellent resistance to temperature and pressurePP-R tube and aluminum layer organic combination, with higher strength and better temperature resistance, pressure resistance performance, more suitable for high temperature hot water field use2, small thermal expansion deformationThe thermal expansion coefficient is small (3 x 10-5m/m - C), similar to metal pipe, avoid the pipe deformation due to temperature changes, reduce the number of free arm compensation for pipe deformation, is ideal for heating and central air-conditioning system.3, light blocking oxygenThe intermediate aluminum layer is insulated from oxygen to avoid the oxidation and corrosion of the metal parts in the heating and central air conditioning system, thus effectively prolonging the service life of the system.
Q:The difference between stainless steel pipe and stainless steel composite pipe
Stainless steel pipe is a kind of hollow long strip round steel, mainly used in petroleum, chemical, medical, food, light industry, machinery, instrument and other industrial pipeline and mechanical structure parts. In addition, the bending and torsional strength of the same weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also used to produce all kinds of conventional weapons, guns, shells and so on.