91中文精品,污污的视频免费在线观看,91就要激情,精品黄色网,欧美精品看片,久久久久久a亚洲欧洲aⅴ,天天干天天色综合网

Successful Trial Rolling of 16MnCr5 in Steel Mill of Xingtai Steel
  Updatetime:2019-04-03 Hits:

  Recently, the steel mill of Xingtai Steel successfully rolled steel 16MnCr5 and has produced two furnaces as planned.

  Because this kind of steel is customized and it is only used to produce valve tappet, the production process should be stricter and the quality standard should be higher. To ensure the first production run smoothly, the steel mill did a lot of preparation, from the material to personnel training. At the same time, the factory and technicians made a lot of communication and reached an agreement. During the production process, technicians conducted all the time. The chemical composition of molten steel and its production process were controlled stably, and all the control requirements reached the expectation.

  This Successful Trial Rolling of 16MnCr5 accumulated rich experience for producing high-end automotive steel and laid a foundation for the continuous improvement of high-end product quality.