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作者研究了一次性分型涂料的成分,这种成分可以保证消除水玻璃砂粘附木模、特别是粘附金属模型.目前,为了消除型砂粘模,使用的涂料有两类:一次性的和半永久性的.使用XB-784清漆(主要成分是聚氯乙烯)做木模的半永久性保护涂层.为了增加木模半永久涂层的使用寿命,又在其表面刷一次性涂料,使用含石蜡的煤油做一次性分型涂料.但这类分型涂料不能满意解决型砂粘模问题,半永久涂层的寿命平均只8～
The authors studied the composition of a one-time parting coating that assures the elimination of sodium silicate sticking to wood molds, especially adherent metal molds. Currently, in order to eliminate mold sticking, two types of coatings are used: And semi-permanent protective coating made from XB-784 varnish (whose main component is PVC) is wood mold.In order to increase the service life of wood-based semi-permanent coating, a one- Paraffin wax kerosene do one-time sub-type paint, but this type of sub-type paint can not be satisfied with the problem of sand mold sticking, semi-permanent coating life expectancy averaged only 8 ~