Steel shot tempering furnace

The utility model discloses a steel shot tempering furnace which comprises a furnace body and a hot blast stove, the furnace body and the hot blast stove are fixedly communicated through a hot blast pipe, a feeding cavity, a tempering cavity and a material collecting cavity are sequentially formed in the furnace body from top to bottom through partition plates, a sliding rail is fixedly connected in the furnace body, a through groove is formed in the upper surface of the sliding rail, and circulation holes are formed in the surfaces of the partition plates. Steel shots are gradually heated in the furnace body through the sliding rail, the through grooves are formed to accelerate heating of the steel shots, the rolling speed of the steel shots is limited through the buffer pieces, the situation that the steel shots are heated too fast due to the fact that the speed of the steel shots in the sliding rail is too fast is avoided, and the problem that the steel shots are quenched before tempering, and the temperat