6Cr3Ni12Mn5Mo无磁钢

Mainly engaged in TISCO non-magnetic plate, Baosteel non-magnetic round steel, non-magnetic drill collar steel and TISCO special steel, high strength steel, wear resistant steel.
First, non magnetic steel (20Mn23Al).
Two, non-magnetic round steel :(round steel) 1Cr13Mn18NiMoNbN 50Mn18Cr4V 6Cr3Ni12Mn5Mo 0Cr18Ni10N 1Cr18Ni11Ti 45Mn17A13 40Mn18Cr3N
Three, 304-321 stainless steel plate, stainless steel composite plate (with)
Four, high strength wear resistant steel TNM360 TNM400 T700 TH800 BS600MC BS700MC and so on
Five,
1, stainless steel: 00Cr18Ni15Mo3Si2 00Cr17Ni14Mo2 0CR18Ni12MO2TI0-2CR13
2, joint steel: 20MnV 20Mn2 5Cr2MoV 30CrMnSiA1 12-15Crmo40Cr 14MnMoNbB
3. Non-magnetic drill collar steel: N1310B, SMF166
Non-magnetic steel is also called non-magnetic steel and non-magnetic steel, in fact, refers to no ferromagnetism and can not be magnetized steel.
Magnetic permeability μ≤1.319×10-6 h/m, electric furnace 20Mn23AlV non-magnetic steel plate, widely used in large and medium-sized transformers, electromagnets, and other non-magnetic structure materials.
The non-magnetic steel 50Mn18Cr5 is a typical and widely used non-magnetic austenitic ring guard steel of MN-Cr series. After solution treatment, semi-hot deformation strengthening or cold deformation strengthening is carried out to improve the strength of the steel to meet the strength requirements of different types of retaining rings. Used as non-magnetic guard ring forgings and other non-magnetic parts for turbo-generator.
Non magnetic steel is a kind of iron and steel functional material, namely a low magnetic steel iron material that does not produce magnetic induction basically under the action of magnetic field.
1, the nature of the
The relative permeability μ value of non-magnetic steel is slightly greater than 1, and the magnetization effect is very weak in the magnetic field, that is, the so-called "non-magnetic" phenomenon is produced, so it is vividly called non-magnetic steel. As a kind of steel functional material, non-magnetic steel does not produce magnetic induction under the action of magnetic field.
The room temperature structure of magnetized steel is required to be stable austenite. This is because ferrite, pearlite and martensite are ferromagnetic at room temperature and exhibit strong magnetization in the magnetic field with high permeability, while austenite with facial-centered cubic structure is paramagnetic with low permeability. By expanding the austenite zone of FE-C alloy phase diagram with appropriate alloying elements and heat treatment methods, a stable single-phase austenite structure can be obtained at room temperature, thus keeping the permeability of the steel material at a low level.
2, classification,
The room temperature structure of magnetized steel is required to be stable austenite. This is because ferrite, pearlite and martensite are ferromagnetic at room temperature and exhibit strong magnetization in the magnetic field with high permeability, while austenite with facial-centered cubic structure is paramagnetic with low permeability. By expanding the austenite zone of FE-C alloy phase diagram with appropriate alloying elements and heat treatment methods, a stable single-phase austenite structure can be obtained at room temperature, thus keeping the permeability of the steel material at a low level.
According to the composition of steel, non-magnetic steel can be divided into high Ni steel, high Mn steel, high CR-Ni steel, high CR-MN-N steel and so on.
According to the performance division, non-magnetic steel can be divided into austenitic non-magnetic stainless steel and non-magnetic structural steel, the former to ensure the stability of austenite, must add enough Ni and Mn, at the same time to ensure the stainless performance, the mass fraction of Cr in steel should be at least greater than 13%. The non-magnetic structural steels are mostly composed of Fe-Mn non-magnetic steels, which can obtain austenitic structure at room temperature with high Mn and C content, including Fe-Mn, Fe-Mn-Cr and Fe-Mn-Al non-magnetic structural steels.
3, the application
Non-magnetic steel is widely used in electric power, rail transit, construction, national defense and many other fields.
(1) The design stress of the guard ring of the generator used in the electric power industry is high, and the magnetic leakage at the end of the rotor can be reduced by the use of high strength non-magnetic steel; Large nuclear fusion devices, superconducting power generation, transmission and energy storage equipment structure materials need a large number of magnetic steel; The guide mechanism of maglev train requires steel to be magnetic free.
(2) In the construction industry, non-magnetic steel is used to avoid the influence of magnetic field in the magnetic shelter. The power conduction network equipment and the protective shelter of large aircraft all use non-magnetic steel. The total number of electric bicycles in China has been more than 120 million, and the motors are largely using non-magnetic steel.
(3) Non-magnetic steel materials are also required for petroleum drill collars, non-magnetic molds and bearings.
(4) In the field of national defense and military industry, non-magnetic steel is used to manufacture the hull of minesweeper, non-magnetic engine and structural materials of covert submarine. The use of non-magnetic steel can play a very good effect on the stealth of military ships. For example, the non-pressure hull of Russian Typhoon class nuclear submarine uses high strength non-magnetic steel. Germany has always used magnetic steel to build submarines, 212 submarine is the use of high strength stainless magnetic steel.