Furnace bottom of carburizing furnace

The utility model provides a carburizing furnace bottom, and belongs to the technical field of carburizing furnaces. The carburizing furnace bottom comprises a main body structure and a heat insulation structure. The main body structure comprises a base and a steel ring, the base is placed on the ground, the surface edge of the base is fixedly connected with the bottom of the steel ring, the heat insulation structure comprises a refractory part and a heat absorption part, the bottom end of the refractory part is fixedly connected with the surface of the base, and the outer wall of the refractory part is tightly attached to the inner wall of the steel ring. According to the heat insulation device, the problems that the heat insulation effect of the furnace bottom is poor, and the service life is short are solved. 本申请提供了一种渗碳炉炉底，属于渗碳炉技术领域。该渗碳炉炉底，包括主体结构和隔热结构。主体结构包括底座和钢铁环，底座放置在地面上，且表面边缘与钢铁环底部固定连接，隔热结构包括耐火件和吸热件，耐火件底端与底座表面固定连接，且外壁与钢铁环内壁紧密贴合，吸热件底端与耐火件表面固定连接，且表面微凸出钢铁环表面，在本申请中，旨在改善炉底隔热效果差，使用寿命短的问题。