The application relates to the technical field of heat treatment, and particularly discloses a high-
chromium grinding ball heat treatment device and process, which comprises a
quenching unit, a feeding unit, a horizontal moving unit, a lifting unit and a cooling circulating unit. The driving member simultaneously drives the flow disturbing member and the inner rotating cylinder, realizes dynamic flow disturbance of
quenching oil and continuous tumbling of the
grinding ball, the flow disturbing member reciprocatingly lifts to forcibly vertically
convection, breaks the
thermal stratification, fully mixes the deep oil of each layer, the inner rotating cylinder rotates to make the
grinding ball continuously tumble, rapidly exchanges heat with the
quenching oil, effectively inhibits the steam film stagnation, avoids the soft point, obtains
high surface hardness and uniform metallographic structure, the tumbling and collision between the grinding balls release the thermal stress and the organizational stress in real time, reduces the
cracking and
distortion, and shakes off the surface residual
carbide and the
oxide skin, realizes online surface purification during quenching.