Tempering furnace
A technology for tempering furnaces and furnace shells, used in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of low thermal efficiency and low steel quality, achieve high heat transfer efficiency and cooling efficiency, improve flatness, and overall strength difference small effect
Pending Publication Date: 2019-09-20
艾伯纳工业炉(太仓)有限公司
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Problems solved by technology
However, due to the relatively simple equipment of the tempering furnace, the processing is relatively simple, the thermal efficiency is relatively low, and the quality of the processed steel is relatively low, which can only meet the general requirements.
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[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0020] see figure 1 and figure 2 As shown, the tempering furnace of this embodiment includes an outer furnace shell 1, an inner furnace shell 2 arranged in the outer furnace shell, an insulating material 3 arranged between the outer furnace shell 1 and the inner furnace shell 2, and the inner furnace shell 2 encloses a furnace A chamber 10, furnace rollers 4 for transporting steel strips are arranged in the furnace chamber 10 . The tempering furnace also includes a heating system and a cooling system. The heating system includes a circulating fan 5 and a heating device 7 for heating the airflow generated by the circulating fan 5. The heating device 7 may be a heating resistor or the like. The cooling system includes a cooling manifold 8 connected in sequence, a cooling fan, and a heat exchanger for cooling the airflow generated by the cooli...
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The invention discloses a tempering furnace. An outer furnace shell, an inner furnace shell arranged in the outer furnace shell and a heat preserving material arranged between the outer furnace shell and the inner furnace shell are included; a furnace cavity is defined by the inner furnace shell, and internally provided with a furnace roller used for conveying strip steel; the tempering furnace further comprises a heating system and a cooling system; the heating system comprises a circulating draught fan and a heating device used for heating airflow generated by the circulating draught fan; the cooling system comprises a cooling header, a cooling draught fan and a heat exchanger used for cooling airflow generated by the cooling draught fan; the tempering furnace further comprises a flow guiding system used for performing flow guiding on the airflow generated by the heating system and the cooling system to the position above the furnace roller. The tempering furnace can achieve heating and fast cooling on the strip steel in the furnace; and due to circulating flowing of the atmosphere in the furnace, the heat transfer efficiency and the cooling efficiency of the tempering furnace are both high. It is guaranteed that the strip steel is uniformly heated or cooled, and the flatness of the strip steel is improved.
Description
technical field [0001] The invention relates to a tempering furnace. Background technique [0002] After the strip steel is quenched, it forms a martensitic structure. Although the strength has been greatly improved, the plasticity has also been greatly reduced, and there is not much practical value. It must go through a tempering process to eliminate its quenching stress. After tempering, although the strength of the steel is reduced, the plasticity is greatly improved. It also improves its practical value. Therefore, the steel strip should be tempered immediately after quenching. [0003] The steel strip is heated to the quenching temperature in a high-temperature furnace, and then after quenching (water quenching, oil quenching, lead bath, bismuth bath, hydrogen quenching, etc.), it enters the tempering furnace for tempering treatment. In the tempering furnace, the steel strip is reheated to the tempering temperature. When running in the furnace, the quenching stress...
Claims
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IPC IPC(8): C21D1/18C21D1/74C21D9/573
CPCC21D1/18C21D1/74C21D9/561C21D9/573
Inventor 罗伯特·艾伯纳
Owner 艾伯纳工业炉(太仓)有限公司