Residual-heat available roll-bar type rapid-cooling furnace

Abstract

The invention relates to heat treatment equipment, and particularly relates to a residual-heat available roll-bar type rapid-cooling furnace. The rapid-cooling furnace comprises a rectangular furnace body and an in-furnace transmission device, wherein the in-furnace transmission device is divided into a cold workpiece input device in the upper layer and a hot workpiece output device in the lower layer, and a roller is respectively arranged at each of the bottom of the cold workpiece input device and the bottom of the hot workpiece output device. According to the rapid-cooling furnace, a cold workpiece to be treated and a treated hot workpiece can be respectively put in the upper layer and the lower layer; energy released when the hot workpiece is cooled can be used for pre-heating the cold workpiece in the upper layer, the preheating temperature can be 300-500 DEG C, and the time of temperature rise can be reduced when the preheated workpiece is subjected to lower high-temperature heating treatment, so that energy can be greatly saved, and defects of cracking, deformation and the like of a cold workpiece caused by thermal stress directly generated in the quick temperature-rise process in a heat furnace can be avoided.

Description

technical field [0001] The invention relates to heat treatment equipment, in particular to a roller-rod type rapid cooling furnace which can utilize waste heat. Background technique [0002] China's industry accounts for 43% of the country's GDP, while industrial energy consumption accounts for more than 70% of the entire society's energy consumption. Industry is the main field and key link to achieve the goal of energy conservation and emission reduction, and it is also the main direction of the implementation of energy conservation and consumption reduction strategies. As an important industry in the industrial field, the iron and steel industry accounts for 11-15% of the country's total energy consumption and 15-20% of the total industrial energy consumption. According to statistics, the energy utilization rate of China's iron and steel industry is only 30-50%, so waste heat is gradually being valued as a new energy source. [0003] Metal heat treatment is to heat a met...

AI Technical Summary

Problems solved by technology

Heat treatment furnace is an important equipment in heat treatment, but the existing heat treatment equipment often cannot use the waste heat in the cooling process of the workpiece after high temperature heat treatment, usually it is cooled with the furnace or air-cooled, and sometimes it is necessary to use a large blower to speed up the cooling

This not only wastes most of the heat energy in vain, but also takes a part of the time for the furnace to cool the workpiece. Other workpieces need to wait for the processed workpiece to be completely cooled before adding new workpieces. Production efficiency, increase time cost

In addition, most of the heat energy is lost to the workshop, causing the temperature of the workshop to rise and seriously affecting the working environment of workers.

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