Box-type annealing furnace and annealing method using same

Abstract

The invention discloses a box-type annealing furnace and an annealing method using the same. According to the box-type annealing furnace and the annealing method using the same, an arranged power chamber disturbs air flow, supplied air passes through a thermal power chamber, a heating device is arranged in the thermal power chamber, the air flow passes through a workpiece chamber after being heated to heat a workpiece in the workpiece chamber, the air flow flows back through an air flue, and a circulating flow channel is formed; the method that heating or cooling is achieved through air flow motion has the advantages that the temperature zone in the annealing furnace is more uniform, the temperature increasing and lowering speed of the annealing furnace is high, stable and controllable, the annealing efficiency is high, and a temperature control system of the annealing furnace is accurate and reliable. The box-type annealing furnace and the annealing method using the same are suitable for the field of annealing equipment.

Description

technical field [0001] The invention relates to the technical field of annealing equipment, in particular to a box-type annealing furnace and an annealing method using the same. Background technique [0002] Annealing is a heat treatment process for materials. Refers to slowly heating the material to a certain temperature and maintaining it for a sufficient time, and then cooling it at a certain speed. The purpose is to reduce hardness, improve machinability; eliminate residual stress, stabilize size, reduce deformation and crack tendency; adjust structure, eliminate structure defects; uniform material structure and composition, improve material performance or prepare for subsequent heat treatment. The annealing process is divided into many types according to different purposes, such as isothermal annealing, homogenization annealing, spheroidizing annealing, stress relief annealing, recrystallization annealing, stabilization annealing, magnetic field annealing and so on. T...

AI Technical Summary

Problems solved by technology

This is unacceptable for some workpieces or processes that require strict control of annealing parameters

[0007] 2. The reliability of the temperature control system is not high

It can be seen from the above that the temperature in the furnace is prone to unevenness, so the temperature control system that relies on the thermocouple probe at a fixed position to measure the temperature is obviously not reliable.

If the probe is installed on the periphery, the annealing parameters of the internal workpiece are uncontrollable, and incomplete annealing may occur; if the probe is installed on the inside, the external heating system is prone to overheating, resulting in damage to the peripheral workpiece

Adding temperature measuring points and temperature control system can alleviate this problem, but the production cost of the furnace will be greatly increased

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