Cast iron metallographic detector

The cast iron metallographic detector comprises a base, a table body, a mirror bracket and a detection mirror, the upper end of the base is slidably connected with two groups of sliding connection plates which are symmetrically distributed, and an opposite clamping mechanism for clamping cast iron is arranged between the two groups of brackets; the two supports are each provided with a hand-operated turnover mechanism enabling the opposite clamping mechanism to rotate, and the base is further provided with a bidirectional driving mechanism enabling the two sliding connection plates to move oppositely. According to the utility model, the bidirectional driving mechanism is started to drive the two groups of sliding connection plates to do synchronous opposite movement, so that the opposite fastening mechanism clamps and fixes the cast iron part, and in the observation process, a user can turn over and switch the observation surface of the cast iron part through the hand-operated turnover mechanism; and a user i