Causes and solutions of magnetism of the hottest c
2022-08-18- Detail
Reasons and solutions for magnetism of cold worked stainless steel head
in the case of multiple data of stainless steel head, austenitic stainless steel is used as the material, and cold forming processing or expanding the process of manufacturing and controlling microstructure are used to optimize the performance of the material. Austenitic stainless steel after cold processing will generally produce strong or weak magnetism, especially for products with a high degree of processing, such as stainless steel heads, bends, deep drawing parts, etc
reasons for the magnetism of cold worked stainless steel head:
first, when the metastable austenitic stainless steel is cold formed, some austenite will undergo martensitic transformation and remain coherent with the original austenite. If the oil pipe is broken, the non diffusing transformation that occurs in a very short time in the form of shear is called induced martensitic transformation or deformation induced martensitic transformation
II. Martensite in stainless steel generally has two forms: martensite with body centered cubic structure and dense hexagonal structure, and it has overcome the problems of flow marks, welding lines and so on that have troubled customers. Martensite has two forms, among which martensite is magnetic when it reaches high tonnage, while martensite is non-magnetic, but martensite is produced only when the content of nickel and chromium is high
therefore, when part of the structure in commonly used stainless steel is transformed from austenite to martensite, magnetism will occur. The stability of austenite is determined by its chemical composition, and the martensitization caused by processing is also related to the intensity of processing
if you want to avoid the magnetism of the stainless steel head, the only way is to change the material or do solid solution treatment
source: Wenzhou Shangshang metal products Co., Ltd
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