The invention discloses a production process of low-dilatation and low-shrinkage insulated mirror boards based on the impregnation process. The production process comprises the steps of S1, fusing aluminum in the
atmosphere of
inert gas; S2, immersing stainless
steel plates into the aluminum and then taking out the stainless
steel plates for cooling; S3, adding first
powder into the aluminum, carrying out heating until the first
powder is fused and then obtaining first fused mixed liquid; S4, immersing the stainless
steel plates into the first fused mixed liquid and then taking out the stainless steel plates for cooling; S5, adding second
powder into the first fused mixed liquid, carrying out heating until the second powder is fused and then obtaining second fused mixed liquid; S6, immersing the stainless steel plates into the second fused mixed liquid, then taking out the stainless steel plates for cooling and obtaining the insulated mirror boards after oxidation, wherein the first powder comprises, by weight,
nickel of 50 parts and
cerium of 7-8 parts, and the second powder comprises, by weight,
germanium of 50 parts and
strontium of 14-15 parts. According to the production process, the conventional impregnation process is improved, and therefore the prepared mirror boards can be frequently used at high temperature and
high pressure and do not dilate or shrink and the surfaces are flat and resistant to wear and do not get sunken.