设备发生火灾，如何鉴定其双相钢材质有没有受到影响？

孙志标

Lgx 发表于 2017-9-29 09:19
最常见的SAF2205双相钢，固溶热处理的最合理温度范围是1020～1100℃，并不是你说的最小1100℃，热处理温 ...

ASTM A890
4A Heat to 2050°F [1120°C] minimum for sufficient time to heat
casting uniformly to temperature and water quench, or the
casting may be furnace cooled to 1850°F [1010°C] minimum,
hold for 15 min minimum and then water quench. A rapid cool
by other means may be employed in lieu of water quench.
5A Heat to 2050°F [1120°C] minimum, hold for sufficient time to
heat casting to temperature, furnace cool to 1910°F [1045°C]
minimum, quench in water or rapid cool by other means.
6A Heat to 2010°F [1100°C] minimum, hold for sufficient time to
heat casting uniformly to temperature, quench in water or cool
rapidly by other means.
7A Heat to 2065°F [1130°C] minimum, hold for sufficient time to
heat casting to temperature, furnace cool to 1940°F [1060°C]
minimum, quench in water or rapid cool by other means.

yangtzeliu

做金相看看，多半的换设备了

raulyazhai

学习了。。。。。。。。

ceyie_wmc

同意前面所说的，按AWS A4.2可进行无损情况下的铁素体试验。