Gas-heated multipurpose roller hearth furnace

Abstract

The invention relates to a gas-heated multipurpose roller hearth furnace, which comprises a feed table, a discharge table, and a multipurpose hearth furnace section consisting of a preheating section, heating section and a heat insulating section, and a quick cooling section which are arranged between the feed table and the discharge table. The upper and lower parts of a rolling rod of the heating section are provided with big combustors; the upper and lower parts of a rolling rod of the heat insulating section are provided with small combustors; an air inlet and outlet pipe is arranged in the quick cooling section, and is connected with one side of a circulator with large air quantity; and the other side of the circulator with the large air quantity is connected with a cooling water tank. The multipurpose roller hearth furnace has the advantages that: 1, the gas-heated roller hearth furnace is multipurpose, can carry out multiple heat treatment such as normalizing, annealing, tempering on steel pipes or bars and is suitable for technological processes with different heating temperatures and cooling methods; and 2, gas is adopted as heating energy, so the gas-heated multipurpose roller hearth furnace is energy-saving and environment-friendly, and has high quick heating speed and high production efficiency of 10-15T / h which cannot be reached by electric heating.

Description

A kind of gas heating multi-purpose roller hearth furnace Technical field: The invention relates to a gas-heated multipurpose roller hearth furnace. Background technique: Roller hearth heat treatment furnaces have been widely used in mechanical and metallurgical heat treatment industries. In the prior art, the heating of the roller hearth furnace has examples of electric heating or gas heating, and the technological process of radiation or convection heating is completed. If in the heat treatment of the roller hearth furnace, in order to adapt to the heat treatment process with large output, high productivity and fast transmission speed, the heating temperature changes greatly and the cooling method is very different, then using one heat treatment furnace will not be able to complete the process requirements. Invention content: In order to solve the above technical problems, the present invention provides a gas-heated multi-purpose roller hearth furnace. The technica...

AI Technical Summary

Problems solved by technology

If in the heat treatment of the roller hearth furnace, in order to adapt to the heat treatment process with large output, high productivity and fast transmission speed, the heating temperature changes greatly and the cooling method is very different, then using one heat treatment furnace will not be able to meet the process requirements.

Images