The results showed that copper enriched liquid phase is formed at reheating temperature of 1 100~ 1 200 ℃, and the liquid Cu enriched phase is penetrated along austenite grain boundary leading to surface cracking. 研究发现,无Ni含铜钢在1100~1200℃会形成液态富铜相,并向奥氏体晶界渗透,成为表面裂纹源。
The preparation of cyclopentadiene from dicyclopentadiene by liquid phase cracking method with the device of continuous reaction-rectification was studied. 本文研究了采用连续反应-精馏装置,由双环戊二烯进行液相热分解制备环戊二烯的工艺方法。
After studying coke reaction mechanism and vapor-liquid-water three-phase equilibrium, we think that the coke is produced by coke precursor in convection section of cracking furnace. 通过对裂解炉结焦机理和气-液-水三相平衡的研究,提出结焦由对流段产生结焦先兆物引起。