天气预报 > 家居 > cr-v是什么材质
cr-v是什么材质
更新时间: 2020-12-01 15:53:38  

cr-v是铬钒钢,是以铬和钒为主加元素的合金钢,硬度比较高,在特定的工作条件下耐磨性非常好,可以用来做坦克的履带板或者六角扳手等。铬钒钢比一般碳素钢的机械性能更好,而且还具有稳定的化学性能,常用的主要有20CrV,40GrV和45CrV。但是,如果铬和钒不是合金化的主加元素,仅仅是在合金钢中添加了铬和钒,那么这种就不叫铬钒钢,因为这里面的铬和钒只能算作一种无害的偶存元素。

关键词: cr 什么 材质

cr-v是什么材质相关经验

天气预报

最新推荐

页面:/news/view-3543529/ | 耗时:0.8416 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=3543529 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3543529 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3543529 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3541386,3543699,3542514,3543821,3531665,3541036,3541540,3542458,3541241,3531010,3543069,3542301,3540993,3543894,3540622,1057287,3528948,3541406,3544132,3542293,3540943,3542302,3540519,3542944,3544249,3532007,3541020,3528010,3541308,3542213) ORDER BY field (ArticleID,3541386,3543699,3542514,3543821,3531665,3541036,3541540,3542458,3541241,3531010,3543069,3542301,3540993,3543894,3540622,1057287,3528948,3541406,3544132,3542293,3540943,3542302,3540519,3542944,3544249,3532007,3541020,3528010,3541308,3542213)