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日本开发了铸型热粘砂防止剂以及铸型用表面处理剂,并开始出售。 潮型模用热粘砂防止剂,由于要符合造型后铸型整体或局部的条件,因而采用原液进行喷涂,又由于它是不溶性的阻然物质,因此不必担心火灾问题,此外不必强制干燥,且是单一液体,因此使用方便,在克服热粘砂、飞溅等缺陷方面,发挥了作用。 铸型用表面处理剂由水溶性树脂、表面活性剂、保湿剂、水等成分构成,与热粘砂防止剂一样,是将原液涂于铸型上,对砂的保湿效果好,能长时间防止砂的干燥。在几分钟后铸型表面的砂开始粘结,成为有韧性的铸型表面。
Japan has developed mold hot sticky sand preventatives and mold surface treatment agents, and began to sell. Tide-type hot sticky sand with anti-agent, as to meet the shape of the mold after the whole or part of the conditions, and therefore the use of stock solution for spraying, and because it is insoluble blocking substances, so do not have to worry about fire problems, in addition do not have to force dry, And is a single liquid, so easy to use, to overcome the hot sticky sand, splash and other defects, has played a role. The mold surface treatment agent is composed of a water-soluble resin, a surfactant, a humectant, water and the like. Like the hot grit prevention agent, the mold surface treatment agent is applied to the mold and has good moisturizing effect on sand for a long time Prevent the sand from drying. After a few minutes the sand on the mold surface starts to bond and becomes a ductile mold surface.