Energy-saving stainless steel wire hydrogen retreat furnace

Abstract

The invention discloses an energy-saving stainless steel wire hydrogen retreat furnace, which comprises a blow-drying pre-heating section, a heating section and a cooling section in turn from left to right. The left end of the blow-drying pre-heating section is connected with an exhaust pipe, the right end is connected with a high-temperature air pipe, and the middle is horizontally provided witha pre-heating section steel pipe; a high-temperature ceramic pipe of which the outer circle is sleeved with a high-temperature stainless steel pipe is horizontally arranged on the cooling section at a part coaxial with the pre-heating section steel pipe; a cooling section steel pipe of which the outer circle is sleeved with multiple heat pipe heat exchanger evaporation sections is horizontally arranged on the cooling section at a part coaxial with the high-temperature ceramic pipe; and the upper part of the cooling section is provided with a heat pipe heat exchanger condensation section of which the left end is connected with the high-temperature air pipe and the right end is connected with a fan. As the high-temperature stainless steel pipe is used as an electric heating element and the heat pipe heat exchanger recycles the waste heat of the cooling section, the heat efficiency is improved; and as the heating pipe is externally covered by high-temperature resistant insulating material, the service life of the high-temperature pipe is greatly prolonged.

Description

technical field [0001] The invention relates to a heat treatment furnace, in particular to an energy-saving stainless steel wire hydrogen annealing furnace. Background technique [0002] Stainless steel wire is a commonly used industrial material, which needs to be annealed during the drawing process. In order to reduce oxidation and enhance heat transfer capacity, a tubular heating and cooling structure is usually used to reduce the heat treatment space. Hydrogen is filled into the tube as the annealing environment medium. In the current annealing process, the stainless steel wire passes through the pickling section, the water washing section, and the steel pipe in the annealing furnace and enters the wire take-up machine in sequence. The water stain enters the heating section, and the high-speed airflow is used to blow the surface of the steel wire in the preheating section. Both the preheating section and the heating section adopt an electric furnace structure. The elect...

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Problems solved by technology

The current annealing furnace mainly has the following defects: 1. The indirect heating efficiency is low and the energy consumption is high; 2. The preheating section, the heating section and the cooling section are all made of high-temperature stainless steel pipes, and the manufacturing cost is high; 3. The steel pipes in the heating section are exposed to air-filled In the furnace, the service life is short and the furnace repair cost is high; 4. The heat in the cooling section is not recovered, but also consumes precious cooling water resources. Scale is easy to form on the outer surface of the steel pipe and the cooling effect is reduced

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