视频 欧美 国产_日韩欧美自拍另类_亚洲少妇无套内射激情视频_男女黄色网站免费观看_一区二区成人av_日本黄色录像一级片_国内精品三级电影_少妇三级高清自拍_免费国产黄在线播放_丰满少妇人妻HD高清大乳

Analysis of mechanical screwdown device based on 4300mm plate mill of Xingcheng Special Steel

2022-07-04

　　Abstract: in today's society, steel is a very important material, which is widely used in many fields. Taking Xingcheng Special Steel as an example, there are some problems in the mechanical screwdown device of 4300mm pla...

Research on converter steelmaking based on automatic control technology

2022-07-01

　　Abstract: converter steelmaking is a vital production technology in the process of steel production. This paper first analyzes the automatic control technology and process flow of converter steelmaking, and then analyzes the ...

Analysis of blast furnace ironmaking process and equipment maintenance

2022-07-01

　　Blast furnace ironmaking is an important part of iron and steel production. The iron making technology currently used is: at high temperature, when carbon rises in the furnace, it reacts with oxygen in the air. This process c...

Steelmaking must understand the problem!

2022-06-30

　　1. ways to accelerate lime slagging? 　　Answer: ① improve the quality of lime by using soft burning active lime ② Properly improve the composition of flux ③ increase the blowing temperature ④ Control proper gun position ⑤ ...

Research on safe operation evaluation technology of blast furnace hearth

2022-06-30

　　Abstract: Aiming at the problem that the current safe operation evaluation technology for blast furnace can not analyze the corrosion data of hearth lining, resulting in poor reliability of evaluation results, a new safe oper...

Analysis of blast furnace blast

2022-06-30

　　agglomeration process 　　■ if the personnel fail to comply with the safety operation regulations, gas maintenance safety regulations, and do not wear labor protection articles, gas poisoning, gas explosion, scalding, elect...