The invention relates to special equipment for two-medium
quenching heat treatment and cooling and a technology of the equipment. The equipment comprises landing legs, a sliding plate, a separation plate, a box plate, a slotted-angle shelving, a roller seat, a pull
rope, guide rails, a guide roller, a net basket, a
rope reeling roll, a stepping motor and a control cabinet, wherein the box plate and the slotted-angle shelving are welded to form a
quenching cooling tank; the
quenching cooling tank is supported by the landing legs; the separation plate is welded in the quenching cooling tank, and divides the quenching cooling tank into a water tank and an
oil tank with the lower parts communicated; the lower part the water tank is welded with the sliding plate; the sliding plate is placed obliquely; steel is heated and subjected to heat preservation to form
austenite, then is put in the water tank, and enters the net basket via the sliding plate; and the net basket and the steel in the net basket move up into oil from water through a lifting mechanism under control of the control cabinet, so that the water quenching and
oil cooling two-medium quenching technology is achieved. According to the equipment and the technology, quenching deformation and
cracking of the steel can be avoided effectively; an
automation degree is high; the labor intensity is low; brine and oil two-medium quenching and brine-oil-air three-medium quenching can be achieved; and the equipment and the technology have broad market prospects.