英语翻译请求专家尽量准确的翻译以下文段:Hardening:Heat uniformly to 823/850°C un

英语翻译
请求专家尽量准确的翻译以下文段:
Hardening:
Heat uniformly to 823/850°C until heated through.Quench in oil.
Tempering:
Heat uniformly and thoroughly at the selected tempering temperature,up to 660°C and hold at heat for two hours per inch of
total thickness.Tempering between 250-375°C in not recommended as this can seriously reduce the steels impact value.
Stress Relieving:
Heat slowly to 650-670°C,soak well before cooling the EN24 tool in a furnace or in air.