High-temperature furnace for producing lead cores

The utility model relates to the field of lead core production, in particular to a high-temperature furnace for producing lead cores, and aims to solve the technical problem that the lead cores are deformed due to non-uniform heating caused by static heating during high-temperature roasting in the prior art. The lead core roasting furnace comprises a furnace chamber 1, an electric heating plate 2, a hot air pipe 3, a branch pipe 4, an air outlet pipe I 5, an air hole 6, an air outlet pipe II 7, a trapezoidal cavity 8, a preheating pipe 9, a lead core 10, a power input shaft 11, a cut-off rod 12 and a limiting block 13, the lead core is controlled to transversely roll along the electric heating plate through the air outlet pipe I which is arranged in a staggered manner, each surface is uniformly roasted by the electric heating plate, and the air outlet pipe II blows air to buffer the falling lead core, so that the lead core is prevented from being broken; the lead cores are pre-dried through the preheating pip