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发表于 2007-11-23 20:52:21
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来自： 中国江苏苏州
Starrett® Ground Tool Steel SAE 0-12 K( I i" a# o- X- C& K% ?8 L
Oil hardenable steel alloy recommended for dies, punches, gauges and tools. It should be used where a greater degree of accuracy is desired in hardening. Its precise diameter and smooth finish make it excellent for use as steel shafting. Also referred to as "Silver Steel" in England ! F. N1 G) ^2 [
4 M$ O# @: Z. K! N. Y
Heat Treatment:
c) H+ ?4 v( Q8 lFor cross sections smaller than 1/4” heat to 1450º - 1475ºF (788º - 802ºC) and hold until heated through. For larger sections, preheat to 1200ºF (649ºC), then raise to 1450º - 1500ºF (788º - 815ºC) hardening temperature, hold half an hour per inch of cross section. Quench in oil at 125º-150ºF (52º- 65ºC) and TEMPER IMMEDIATELY. |
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