Quenching heat treatment device for metal material processing

The invention relates to the technical field of metal material processing, in particular to a quenching heat treatment device for metal material processing, which comprises a quenching pool, the top of the quenching pool is slidably provided with a first cover plate and a second cover plate which are symmetrically arranged, and the upper part of the quenching pool is fixedly connected with a connecting plate through a rope; a clamping assembly for clamping a workpiece to be quenched is arranged below the connecting plate, a rotating assembly for driving the clamping assembly to rotate is arranged on the connecting plate, two symmetrically-arranged connecting rods are hinged to the connecting plate and are each in an L shape, and elastic pads are fixedly arranged at the ends of the short parts of the two connecting rods correspondingly. The first cover plate and the second cover plate are each provided with a first receding groove, the short parts of the two connecting rods are hinged to the corresponding firs