Device and method for recycling nitrogen of annealing furnace

Abstract

The invention discloses a device and a method for recycling nitrogen of an annealing furnace. The device comprises a heat preservation foundation, a pre-release nitrogen annealing furnace, a first air pump, a condensation tank, a sealing plate, an oil drainage bolt, an oil filter screen, an air source filter, a pressure measuring probe, a second air pump, a temperature control tank, a first inductance coil, a second inductance coil, a third inductance coil, a fourth inductance coil, a first temperature measuring probe, a second temperature measuring probe, a third temperature measuring probe, a fourth temperature measuring probe, a third air pump, an electromagnetic reversing valve, a nitrogen storage tank, a nitrogen generator, a first servo valve, a second servo valve, a third servo valve, a fourth servo valve, a fifth servo valve, a pre-introduced nitrogen annealing furnace and a ventilation pipeline; waste gas in the pre-released nitrogen annealing furnace passes through the condensation tank and the temperature control tank to sequentially achieve purification and precise temperature control of nitrogen in the working process, finally, the nitrogen is directly introduced into the pre-introduced nitrogen annealing furnace, so that a set of complete industrial process is efficiently and orderly realized, and the purpose of recycling the nitrogen of the annealing furnace is fulfilled.

Description

technical field [0001] The device of the invention belongs to the field of annealing heat treatment, and relates to a device and method for reusing nitrogen in an annealing furnace. Background technique [0002] Annealing is a necessary material heat treatment process in manufacturing. The annealing process consumes less energy, and a reasonable annealing process will improve machinability; eliminate residual stress, stabilize dimensions, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects. The commonly used annealing process is to slowly heat the metal to a certain temperature, hold it for a certain period of time, and then cool it at an appropriate speed, without spending a lot of cost in the process. It can be seen that the operation of the annealing process is simple, does not require complex industrial equipment, and is economical. Among them, the annealing furnace is often used as an annealing container for small wor...

AI Technical Summary

Problems solved by technology

In the conventional process, after the annealing in the furnace is completed, the high-temperature nitrogen in the annealing furnace is directly released, which not only leads to waste of nitrogen, but also causes pollution by the oil pollution of the workpieces produced and processed by the vaporization and release of high-temperature nitrogen.

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