日韩亚洲一区中文字幕在线,黄色视频免费观看网站,9191精品国产免费久久,欧美日韩三四级视频在线观看,亚洲国产成人久久综合碰,国产午夜av毛片久久,真人抽搐一进一出gif免费木瓜视频

The Effect of Surface Quality Research of 2Cr13A Billet in Steel-Making Plant is Obvious
  Updatetime:2013-09-18 Hits:

  2Cr13A is one representative steel of the martensitic stainless steel. After annealing the steel will has good toughness and easy to be processed. The steel will also has high strength, high hardness, with certain corrosion and high wear-resistant characteristics after quenching. In order to meet the needs of the steel casting, based on the theoretical research and actual production process, the steel-making plant developed targeted measures to improve the surface quality and casting properties of 2Cr13A.

  By taking appropriate temperature system, optimizing process parameters and other measures, the steel-making plant solved the problems of surface longitudinal depression and longitudinal cracks of 2Cr13A stainless steel billets and improved the continuous casting heats.