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硅溶胶精密铸造属熔模铸造，大致的硅溶胶精密铸造工艺流程如下：
Silica sol investment casting belongs to investment casting. The general process flow of silica sol investment casting is as follows:
1、首先根据硅溶胶铸造零件的形状制造模具；
1. Firstly, molds are made according to the shape of silicon sol casting parts.
2、再用硅溶胶铸造模具制造出来与零件一样的蜡型；
2. The wax mold is made by using silica sol casting mold to be the same as the parts.
3、把蜡型放到硅溶胶与石英砂制成的浆中，蜡型上会有一层浆，之后会发生固化。多次浸浆与固化后，基本上成型了；
3. Put the wax mold into the slurry made of silica sol and quartz sand, there will be a layer of slurry on the wax mold, and then solidification will take place. After many times of immersion and solidification, it is basically formed.
4、脱蜡，模型放入热水中，蜡会熔化漂浮在水面上，留下模壳；
4. Dewaxing. When the model is put into hot water, the wax will melt and float on the water surface, leaving the shell.
5、浇铸成型。
5. Casting.