Technological method, equipment and product for double-layer coating of curved glass

The invention relates to the field of vacuum coating, in particular to a curved glass double-layer coating process method, equipment and a product, and the process method comprises the steps of pretreatment, niobium film plating, transition, chromium film plating and post-treatment. The double-layer coating equipment comprises an upper layer and a lower layer, wherein the upper layer consists of a front rough extraction chamber, a front fine extraction chamber I, a front fine extraction chamber II, a front buffer fine extraction chamber, a niobium target coating chamber, a transition chamber, a chromium target coating chamber, a rear buffer chamber, a rear fine extraction chamber and a rear rough extraction chamber which are connected in sequence; the lower layer is composed of a feeding table, a discharging table and conveying rollers. The curved glass product is prepared by using a double-layer coating process method. The required process can be realized by only needing the film layers made of two materials