There are three main types of stainless steel screens: Stainless steel screens are widely used in industries, agriculture, technology, and national defense. At the top of technology, high-tech industries are second only to food and clothing and are closely related to people's lives. Stainless steel screens can be based on The chemical composition of the material structure is used in aviation, space, printing, printing, printing and dyeing, electronics, mining, pharmaceutical, food, food processing, chemical and other industries.
Detailed description of chemical composition and three types of functions of stainless steel: austenitic stainless steel, martensitic stainless steel, ferritic stainless steel, duplex stainless steel and precipitation hardening stainless steel.
According to the chemical composition of steel, it can be divided into: Cr stainless steel, Cr-ni stainless steel, Cr-mn-n-ni stainless steel, ultra-low carbon stainless steel, high-purity stainless steel, etc.
According to the functional classification of steel, it can be divided into low temperature stainless steel, heat-resistant stainless steel, wear-resistant stainless steel, non-magnetic stainless steel, free-cutting stainless steel, superplastic stainless steel, etc. Stainless steel screens can be selected as screens, filters, protection nets and Solid screen.
Cone Shaped Stainless Steel Mesh Sieve
Cone shaped stainless steel mesh sieve: It is mainly used for solid particles, powder, and sieving in metallurgy, coal, rubber, petroleum, chemical, pharmaceutical, automotive, ceramics, glass and other industries.
Wire mesh conical strainer: It is mainly used in the petroleum industry, such as mud net, chemical fiber electroplating industry, pickling net, liquid and gas filtration and purification.
How to identify the material of stainless steel wire mesh?
1. Austenite type: such as 304, 321, 316, 310, etc .;
2. Martensite or ferrite type: such as 430, 420, 410, etc .;
The austenite type is non-magnetic or weakly magnetic, and martensite or ferrite is magnetic.
Most of the stainless steel meshes commonly used as decorative tube sheets are austenitic 304 materials, which are generally non-magnetic or weakly magnetic, but they may also be magnetic due to chemical composition fluctuations or different processing conditions caused by smelting. Cannot be considered counterfeit or unqualified. What is the reason for this?
As mentioned above, austenite is non-magnetic or weakly magnetic, while martensite or ferrite is magnetic. Due to component segregation or improper heat treatment during smelting, a small amount of martensite in austenitic 304 stainless steel mesh will be caused. Or ferrite. In this way, 304 stainless steel wire will have a weak magnetism.
In addition, the cold-worked 304 stainless steel wire mesh will transform the martensitic structure. The greater the cold deformation, the more martensite transformation, and the greater the magnetic properties of the steel. Like a batch of steel strips, Φ76 tubes are produced without obvious magnetic induction, and Φ9.5 tubes are produced. Due to the large bending deformation, the magnetic induction is obvious. Due to the larger amount of deformation in the production of rectangular tubes than round tubes, especially the corners, the deformation is more intense and the magnetic is more obvious.
In order to completely eliminate the magnetic properties of 304 steel caused by the above reasons, a stable austenite structure can be restored by high temperature solution treatment, thereby eliminating the magnetic properties.