Continuous roller-hearth type furnace

Abstract

The invention relates to the technical field of heating equipment, and particularly discloses a continuous roller-hearth type furnace for annealing and normalizing thermal treatment of seamless steel tubes, welded tubes and automotive spare parts. The continuous roller-hearth type furnace is suitable for bright heat-treatment in nonferrous industries and copper product industries. The continuous roller-hearth type furnace is characterized in that a forced stirring fan is arranged on a hearth, electrical heating elements are reasonably arranged, and the furnace temperature and atmosphere are uniformly distributed, thus high-quality products are obtained; a high-speed jet-flow cooling system is adopted in a forced-cooling zone so as to enhance the cooling effect of workpieces and ensure the cooling of the pipes within the required time; a supporting bearing is a special high-temperature resistant bearing and is stable in conveying, and the service life of the supporting bearing is ensured; a sundries clearing port is formed below the hearth so as to ensure the cleanness of the inner part of the furnace; a production line has the functions of complete and reliable electric automatic control, safety interlocking, alarming and the like; and an electrical control system adopts a programmable logic controller (PLC) and can be matched with a computer so as to monitor the production line.

Description

technical field [0001] The invention relates to the technical field of heating equipment, in particular to a continuous rolling hearth furnace used for annealing and normalizing heat treatment of seamless steel pipes, welded pipes and spare parts of automobiles. Background technique [0002] The rapid development of the automobile industry is obvious to all. my country's total automobile output maintains an average annual growth rate of 12%-15%. With the continuous improvement of people's living standards, the automobile sales market has great potential, but because the parts of automobiles need to be pickled, the environmental pollution caused by pickling is becoming more and more serious, resulting in more and more requirements for the production process of auto parts. The higher the temperature, especially the non-ferrous metal and stainless steel pipe, it is required not only to not cause the surface of the finished product to be blackened, but also to not damage the env...

AI Technical Summary

Problems solved by technology

With the continuous improvement of people's living standards, the automobile sales market has great potential. However, since the parts of automobiles need to be pickled, the environmental pollution caused by pickling is becoming more and more serious, which leads to more and more requirements for the production process of auto parts. The higher, especially non-ferrous metals and stainless steel pipes, it is required not only to not cause the surface of the finished product to be blackened, but also to not damage the environment, so it is urgent to develop a heat treatment equipment that does not need to be pickled.

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