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TA的每日心情 | 郁闷 2013-6-27 07:55 |
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本帖最后由 ximcn 于 2009-11-13 21:15 编辑
这几种钢材产生的时间次序是,154CM,ats34,rwl34,cpm154.ats是80年代产物,cpm154是2000年以后,而RWL34在这之间。我手机上的不方便,晚点查查看能不能找到他产生的具体时间
白鸟已隐 发表于 2009-11-13 21:03 
谢谢,真的非常感谢。J.H 的这段话我看了,在没有其他证据前,我相信J.H的说法,不用再查具体时间了。
看来前面是我错了.
Jerry Hossom的原话如下:
Ironically, ATS-34 happened when Crucible Steel decided it could save some money in how they produced 154CM (same formula). The 154CM was great steel, but it turned into dirty crap when they stopped doing the double vacuum melt on it. Loveless who had been using 154CM got pissed and went to Japan and talked Hitachi into making it. Hitachi's version of 154CM is ATS-34.
Fast forward, 20 years later, Crucible decides it really does want to be in the knife steel business and goes back to making 154CM the way it should be made, while Hitachi appears to have decided to save some money. The last time I tried ATS-34, about 10 years ago, it was garbage. It had a lot of surface scale and was very granular, even on their cross rolled sheet stock. All 154CM is cross rolled, is much cleaner and has no surface scale.
A couple years ago, Crucible decided to use the CPM process to make it, so they added 0.1% Vanadium to help refine the grain even further than CPM normally does and CPM-154 was born. It's a great steel, and takes a wonderful finish.
BTW, somewhere in the middle of all this, Uddeholm in Sweden began producing a powder metallurgy version of ATS-34, called RWL-34, which is identical to CPM-154. What goes around comes around. In effect CPM-154 is a copy of a copy of their own steel.
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