Annealing furnace for stainless steel belt

Abstract

The invention discloses an annealing furnace for a stainless steel belt. The annealing furnace comprises a heating mechanism, an air cooling mechanism, a water cooling mechanism and a drying mechanism, wherein the heating mechanism comprises an inlet sealing section, a preheating zone, a heating zone and an outlet sealing section, the preheating zone and the heating zone are enclosed as a closingmechanism through the inlet sealing section and the outlet sealing section, the heating zone is provided with a heating nozzle, the heating nozzle sprays a flame to heat the stainless steel belt and generate flue gas, the preheating zone preheats the stainless steel belt through flue gas convection and radiation, the drying mechanism includes a hot air blower, and a heat source of the hot air blower is flue gas and waste heat generated by the heating mechanism. By adopting the annealing furnace, the structure is simple, the traditional annealing process is simplified, the prepared stainless steel belt has good mechanical properties, moreover, heat consumption is small, and the energy saving effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of stainless steel, in particular to an annealing furnace for stainless steel strips. Background technique [0002] Stainless steel strip is an extension of ultra-thin stainless steel plate. It is mainly a narrow and long steel plate produced to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. It is widely used in high-tech industries, IT industries, and Aviation and aerospace industries have high added value, but the rolling process is difficult to master, because internal stress will be generated inside the stainless steel strip after the initial rolling, which affects the effect of finishing rolling and has a great impact on the forming of the finished product. The finished products have different requirements on hardness, which increases the difficulty of the rolling process, the production efficiency is low, and the finished product rate is...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned annealing process requires precise control and is difficult to produce. The residual stress of the stainless steel strip can be removed through the above-mentioned annealing process. However, it only takes 20 seconds to preheat to 380°C, and the heating time of the strip steel from 380°C to 1130°C only 40s, both preheating and heating up require a separate heat source, and the cooling stage is also rapid cooling, and the cooling is prone to unevenness, which leads to the unsatisfactory mechanical properties of the stainless steel strip, and its elongation is only 46-55%. In addition, the surface The finish is Ra0.6-0.8, and the appearance is not bright enough

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