几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量

几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 (http://www.dimcax.com/hust/index.php)
-   产品功能分析 (http://www.dimcax.com/hust/forumdisplay.php?f=10)
-   -   rebar billets (http://www.dimcax.com/hust/showthread.php?t=27827)

huangyhg 2009-09-15 04:41 PM

rebar billets
 
rebar billets
a quick one - from a technical point of view, it is really necessary that steel billets for rebar be from virgin steel or can re-rolled steel billets (scrap) be used too? what is pros and cons? is it okay so long as all steel properties are met? what is your practice? thanks . . .
bigh - in the us reinforcing steel is usually made in electric arc furnaces with scrap steel as the primary raw material.
it's not like they take a bunch of scrap and just roll it into another chunk of steel. the stuff is melted, once you get to that point, it doesn't matter where it came from.


所有的时间均为北京时间。 现在的时间是 02:29 AM.