其他 返回
天气预报 > 其他 > 钢铁是怎样做成的
钢铁是怎样做成的
更新时间： 2020-10-25 00:00:00  

钢铁做成的步骤：铁矿石经过选矿、烧结、高炉冶炼成铁，铁水经过转炉冶炼成钢水，再经过连铸机变成铸坯，再经过轧机轧成相应的钢材。钢铁冶炼：现代炼铁绝大部分采用高炉炼铁，个别采用直接还原炼铁法和电炉炼铁法。炼钢主要是以高炉炼成的生铁和直接还原炼铁法炼成的海绵铁以及废钢为原料，用不同的方法炼成钢。其基本生产过程是在炼铁炉内把铁矿石炼成生铁，再以生铁为原料，用不同方法炼成钢，再铸成钢锭或连铸坯。

关键词： 钢铁 怎样 做成

钢铁是怎样做成的相关经验

天气预报

最新推荐

页面:/news/view-1780322/ | 耗时:0.9372 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1780322 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1780322 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1780322 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1093679,1065361,1041271,1131105,1065333,1112398,1052347,1125329,1094393,1128777,1062716,1064977,982939,1086872,1057545,1053224,1067241,1067905,1063981,1101707,1103070,1062602,997352,1129549,1105087,1115699,1049946,1049174,1046706,1061796) ORDER BY field (ArticleID,1093679,1065361,1041271,1131105,1065333,1112398,1052347,1125329,1094393,1128777,1062716,1064977,982939,1086872,1057545,1053224,1067241,1067905,1063981,1101707,1103070,1062602,997352,1129549,1105087,1115699,1049946,1049174,1046706,1061796)