手机在线国产视频观看_国产日韩精品无码去免费专区国产_黄瓜视频污版在线观看_亚洲男人午夜av剧场_三级无码久久影视_免费黄色性感一级片_国产视频无遮挡一二三_在线观看av日韩_精品国产免费第一区二区三_四海日本电影在线观看

News News News News
  • 地址:江蘇省南京市莫愁路90-3號(hào)
  • 電話:+86-25-52217447
  • 電話:+86-25-86629730
  • 電話:+86-25-86622491
  • 電話:+86-25-86622492
  • 電話:+86-25-86622493
  • 傳真:+86-25-52300551
  • 郵件:hrbn@hrbnbearing.com
  • 聯(lián)系人:劉長(zhǎng)嶺
  • 網(wǎng)址:www.8767.com

Some domestic bearing steel smelting oxygen levels fall from month to month

The beginning of the year, the domestic some tried to strengthen the joint between colleges, 40 tons of electric furnace smelting of high-end bearing steel of high quality innovation. How to look from the bearing number bearing classification 


Since this year, the domestic some tried to strengthen the joint between colleges, 40 tons of electric furnace smelting of high-end varieties of bearing steel quality control level continues to increase, a key indicator of oxygen content is down 5.3% from a year earlier, started in May, and continuously break through the best results. 


High requirement of bearing of steel against steel purity, oxygen content and inclusion in steel are very strict. Along with market development is more and more fast, lightweight and long life of bearing all need bearings has a very high end technology and strict testing, purity of bearing steel production are put forward higher requirements, and high and low oxygen content, it is very important criteria. 

To advance the high-end bearing steel series product quality improvement work, refining this year and the related institutions of higher learning in the form of joint research and development, to the oxygen content of bearing steel production, the generating mechanism of inclusion and so on has carried out systematic research and analysis, and on this basis, the bearing steel finished product oxygen content reduced month by month, the year's performance also have guarantee. Heat pump cooling method