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The second important thing is knowing the correct hardening temperature. For me it is very important to find AC1. This is the point where high carbon steel changes from a perlite structure to a fully autensitic grain structure. The bonus of hardening at the AC1 temperature is that the steel is at the smallest grain size, which will then enable the cutting edge to be the sharpest you can get. AC2 is the point where the steel looses its magnetic capability - you judge this by touching the blade with a magnet whilst heating: the moment the magnet does not stick you have reached AC2. The problem with AC2 is that the grain size is larger than at AC1. You still have a fully autensitic blade, but through my own cutting tests I find AC1 is the ultimate temperature to quench at for edge-holding.
简单的译一下, 名词和正确性我都不保证
最好的淬硬温度是 AC1, 即是波来铁刚好全变成沃斯田铁的一刻, 原因是在这温度淬硬的铁晶体是最细小的, 这能令刃口磨到最利 (我注: 以W2 来说, AC1 是732 to 743 C, 每种金属不同)
AC2 是当金属失去磁性的温度, 都是全沃斯田铁, 不过晶体较大...
如此这般
[ Last edited by h2owong on 2005-7-19 at 22:31 ] |
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