5 CrMnMo、5 CrNiMo钢是常用的热作模钢,我厂在淬火加热时为出炉方便,用镀锌铁丝捆扎锻模,淬火后发现,被捆处出现明显的淬火软带。经分析认为,这是锌与锻模作用破坏了表面质量,造成淬火后硬度不足。现在锻模淬火时,我们采用挂具装夹,淬火时连用挂具一道入油,避免了硬度 5 CrMnMo, 5 CrNiMo steel is commonly used hot work die steel, I plant in the quenching and heating for the convenience of the furnace, with galvanized wire bundles forging die, quenching and found, was bundled at the apparent quenching soft zone. After analysis, this is the role of zinc and forging damaged the surface quality, resulting in lack of hardness after quenching. Now forging quenching, we use the hanging fixture, when used together with a hanger into the oil, to avoid the hardness