久久精品国产嫖妓，日韩人妻中文字幕，亚洲精品一级毛片在线播放，亚洲欧美日韩国产一区二区三区精品，在线精品视频一区二区三四，国产在线午夜宅在线，无码乱人伦中文视频在线观看，99re国产最新视频在线

Stainless Steel head case more data is austenitic stainless steel as material, cold forming processing methods. After the cold worked austenitic stainless steel generally produce strong or weak magnetic, especially for stainless steel head, elbow, deep drawing parts, such as processing a large extent the product.

Cold worked stainless steel head causes magnetism:

First, when the metastable austenitic stainless steel cold forming, a portion of the austenite martensite transformation, and keep the original austenite coherent in shear mode in the absence of diffusion occurs very short phase transition, students called induced martensitic transformation or deformation induced martensitic transformation;

Second, the martensitic stainless steel generally α 'Markov Hugh and dense hexagonal structure ε martensite two kinds of forms, including α' body-centered cubic structure having a magnetic martensite, ε martensite non-magnetic, but only higher nickel-chromium content, it produced ε martensite.

So commonly used in the stainless steel parts of the organization by the austenite into martensite, it will generate a magnetic. Austenite stability by its chemical composition determines, work-induced martensite and is also related to the intensity of processing.

If you want to avoid generating magnetic stainless steel head method it can only be based on a material change or for solution treatment.