Indirect heating device and heat treatment equipment

• Main Authors: CHEN YUNFEI, SHU DONGFANG
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2021
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; DIFFUSION TREATMENT OF METALLIC MATERIAL; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; KILNS; LIGHTING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WEAPONS

The invention provides an indirect heating device and heat treatment equipment, and relates to the technical field of heat treatment. The indirect heating device comprises a heating chamber, heaters and protective pipes, wherein heating holes are formed in the heating chamber, the heaters penetrate through the heating holes, extend into the heating chamber and are used for heating the heating chamber, the protective pipes are assembled in the heating holes, annularly arranged outside the heaters and used for protecting the heaters, and the inner walls of the protective pipes and the heaters are arranged in a spaced mode. According to the heat treatment equipment, the protective pipes are annularly arranged outside the heaters, and the inner walls of the protective pipes and the heaters arearranged in the spaced mode, so that gaps exist between the inner walls of the protective pipes and the heaters, contact between carbon deposition on the inner walls of the protective pipes and the heaters is avoided, the ph