Annealing furnace internally heated uniformly and externally insulated

Abstract

The invention discloses an annealing furnace internally heated uniformly and externally insulated, and belongs to the technical field of heat treatment equipment. The annealing furnace comprises a box body, the inner wall of the box body is provided with a sliding groove, the box body is internally and fixedly provided with a bearing device, the exterior of the bearing device is provided with a heating device, the inner wall of the heating device is movably connected with the outer wall of the bearing device, a rotating ring is arranged in the heating device, one end of a connecting plate is fixedly connected with the outer wall of the rotating ring, a sliding column is arranged at the other end of the connecting plate, the outer wall of the sliding column is slidably connected with the inner wall of the sliding groove, a mounting block is fixedly mounted at the end, away from the sliding groove, of the connecting plate, and a fixing protruding block is fixedly connected to the outer wall of the mounting block. According to the annealing furnace internally heated uniformly and externally insulated, a workpiece can be uniformly heated in the box body through the heating device, the quality of the workpiece is improved, a circulation device can accelerate flowing of air in the box body, heat transfer in the heating process is promoted, and uniform heating of the workpiece is facilitated.

Description

technical field [0001] The invention belongs to the technical field of heat treatment equipment, and in particular relates to an annealing furnace with uniform internal heating and external heat insulation. Background technique [0002] Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness, improve machinability; reduce residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects. To be precise, annealing is a heat treatment process for materials, including metal materials and non-metal materials. Moreover, the purpose of annealing new materials is similar to that of traditional metal annealing. Annealing furnaces are classified according to heat sources into electric furnaces, coal-fired annealing furnaces, oil-fired annealing fur...

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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the disadvantages that the existing annealing furnace still has in use, although it has the functions of preventing the heating wire from being burned in the air and having a long service life, the position of the heating device is fixed, and it is impossible to control the workpiece. The surrounding circulation heating makes the workpiece heated unevenly, and the proposed annealing furnace with uniform internal heating and external heat insulation

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