一、概况石蜡、硬脂酸是目前熔模铸造中采用最为普遍的一种模料,它是一种低熔点模料,其缺点是热稳定性低,在夏季及炎热的地区使用时,易变形,对铸件质量有颇大危害,从而缩小了其应用的地区范围。同时,由于硬脂酸需用量甚大(供应往往脱节),且价格较高不经济外,还因与水玻璃存在皂化反应,直接影响熔模光洁度。我厂从72年开始,曾试验用少 First, an overview of paraffin, stearic acid is the most commonly used in the investment casting of a mold, it is a low melting point mold, the disadvantage is the low thermal stability, in summer and hot areas when used, easy Deformation, a considerable hazard to the quality of castings, thus narrowing the scope of its application. At the same time, due to the large amount of stearic acid needed (the supply is often out of line), and the higher the price is not economical, but also because of the existence of saponification reaction with water glass, a direct impact on the fusing finish. I plant from 72 years ago, had tried with less