论文部分内容阅读
这里所说模料系指石蜡——硬脂酸各50％的石蜡硬脂酸模料。在熔模精密铸造生产中,为提高生产效率,蜡模取出后,一般放入15～18℃的冷却水中进行强制冷却。但是熔模在水中冷却时,表面会产生皂化物。如熔模表面皂化严重,势将影响到铸件表面的质量。为此,了解熔模在冷却水中的皂化原理,并采取适当措施防止或减轻是有实际意义的。 精铸冷却熔模所用的冷却水,一般都为食用自来水。根据其中所含可溶性盐的种
The term “mold” as used herein refers to a paraffin-stearic acid 50% paraffin wax mold. In precision casting investment casting, in order to improve the production efficiency, the wax mold is removed, it is generally placed in cooling water 15 ~ 18 ℃ for forced cooling. However, when the mold is cooled in water, saponification occurs on the surface. Such as the melting surface saponification serious, potential will affect the quality of the casting surface. For this reason, it is practical to understand the saponification principle of investment in cooling water and take appropriate measures to prevent or reduce it. Casting cooling cooling water used in molds are generally tap water. Depending on the species of soluble salt contained therein