1996年开发了一种新的三乙胺冷芯盒工艺 ,制芯时释放的气味降低和浇注时ＢＴＸ值减少 ,砂芯的脱模性改善 ,芯盒表面树脂的粘附性减少 ,从而提高了制芯效率 ,减少了芯废率。新改进树脂中游离酚降至 1% ,游离醛降至低于 0 .2 % ,采用植物油 -甲酯作树脂稀释剂取代了旧砂工艺用芳 A new triethylamine cold-box process was developed in 1996 to reduce the odor released during core making and to reduce the BTX value during casting, to improve the releasability of the sand core and to reduce the resin adhesion on the core box surface, thereby increasing The core efficiency, reducing the core waste rate. The new modified resin free phenol reduced to 1%, free formaldehyde decreased to less than 0.2%, the use of vegetable oil - methyl ester resin diluent to replace the old sand with aromatic