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碳素工具钢水油双液淬火是热处理的主要传统工艺,但对于缺乏经验的工人来说,并非一朝一夕所能掌握,尤其是凹模淬火要减少收缩变形难度更大。如140×120×25mm的模板,在8％NaCl水溶液中淬火,按照习惯的有效厚度计算法,以3.5mm/s计算,则水冷时间为7秒,而实际上水温在O℃时仅需3秒:中间若开80×50mm的型腔,20℃时仅需3秒,实际时间与计算的要相差一倍以上,足见其不合理。本文通过对双液淬火过程的分析,提出一种简单易行的估算水中冷却时间,使这种传统工艺能迅速为人所掌握。
Carbon tool steel water-oil dual-liquid quenching is the main traditional heat treatment process, but for inexperienced workers, not overnight to master, especially die quenching to reduce shrinkage deformation more difficult. Such as 140 × 120 × 25mm template, quenched in 8% NaCl aqueous solution, according to the customary method of effective thickness calculated at 3.5mm / s, the water cooling time of 7 seconds, and in fact the water temperature at O ℃ when only 3 Seconds: If the middle of the open cavity of 80 × 50mm, only 3 seconds at 20 ℃, the actual time and the calculated difference of more than doubled, it shows that its unreasonable. In this paper, through the analysis of two-liquid quenching process, a simple and easy to estimate water cooling time, so that the traditional process can quickly grasp for people.