Roller compound normalizing annealing furnace

Abstract

The invention relates to a roller-rod composite normalizing annealing furnace, which comprises a furnace shell, and an upper conveying roller and a lower conveying roller are arranged inside the furnace shell, and the upper conveying roller is divided into preheating zones from left to right , a normalizing zone, a strong cold room and a heat preservation zone; the lower transfer roller is divided into an annealing heating zone, a fast cooling zone and an isothermal zone from right to left; in the normalizing zone, heat preservation zone, annealing heating zone and an isothermal zone There are heaters inside, and vacuum ventilation chambers are arranged at the front and rear ends of the furnace shell. After adopting the above structure, the normalizing and annealing is completely separated from the manual operation to realize automatic operation, the normalizing and annealing temperature can be well controlled, the transmission is stable, the atmosphere in the furnace can be controlled, and the labor cost is saved.

Description

technical field [0001] The invention relates to an annealing equipment in the surface treatment industry, in particular to a roller bar composite normalizing annealing furnace. Background technique [0002] In the machinery manufacturing and processing industry, the processed parts need to be heat treated in order to make their performance more superior. Normalizing is to heat the workpiece to 30-50 °C above Ac3 or Acm, and after a period of heat preservation, it is taken out of the furnace and placed in the air. Or the metal heat treatment process of water spray, spray or air cooling, sometimes needs to be annealed after normalizing, because the temperature used by the two heat treatment methods is different, so it must be operated at two temperatures, and currently usually It adopts two furnaces, one for normalizing treatment and the other for annealing treatment, which requires manual handling, but cannot realize automatic operation, which increases labor costs. Content...

AI Technical Summary

Problems solved by technology

[0002] In the machinery manufacturing and processing industry, the processed parts need to be heat treated in order to make their performance more superior. Normalizing is to heat the workpiece to 30-50 °C above Ac3 or Acm, and after a period of heat preservation, it is taken out of the furnace and placed in the air. Or the metal heat treatment process of water spray, spray or air cooling, sometimes needs to be annealed after normalizing, because the temperature used by the two heat treatment methods is different, so it must be operated at two temperatures, and currently usually It uses two furnaces, one for normalizing and the other for annealing, which requires manual handling and cannot be automated, which increases labor costs

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