A tendency to harden by rapid cooling necessitates the use of preheat to remove the quencheffect of cold metal, and to reduce the cooling rate.
强化的趋势迅速冷却，有必要制定预热来消除冷金属淬火效果，并减少冷却速率。
2
Effect of water quench process on tensile properties of microalloyed dual phase (DP) steel was investigated.
研究了水淬工艺对微合金双相钢组织和力学性能的影响。
3
The small average relative error of tracer concentration in the different range of researched gas flow capacity shows a better quenching effect of the new quench mixer.