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Method for realizing low temperature tempering by medium-high temperature tempering furnace

A tempering furnace, medium and high temperature technology, applied in the field of heat treatment, can solve problems such as the inability to combine low temperature and high temperature furnaces, the inability to control the convection in the furnace uniformly, and the instability of temperature uniformity, so as to reduce investment costs, strengthen airflow disturbance, and improve The effect of heating efficiency

Active Publication Date: 2013-08-07
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method has the disadvantages of large investment in equipment, uneven control of convection in the furnace, and unstable temperature uniformity, and cannot realize the combination of low temperature and high temperature furnaces

Method used

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  • Method for realizing low temperature tempering by medium-high temperature tempering furnace
  • Method for realizing low temperature tempering by medium-high temperature tempering furnace
  • Method for realizing low temperature tempering by medium-high temperature tempering furnace

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Embodiment Construction

[0021] Example embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which example embodiments are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and descriptions are to be regarded as illustrative in nature and not restrictive. In the drawings, the same reference numerals denote the same elements throughout. In the drawings, the size and size of each structure are exaggerated, omitted, or schematically shown for convenience of description and clarity.

[0022] In order to simultaneously realize low-temperature tempering, medium-temperature tempering and high-temperature tempering in one tempering furnace, the invention improves the medium-high temperature tempering furnace. Specifically, the tempering furnace adopted in the present invention is an open-flame heat treatment...

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Abstract

The invention discloses a method for realizing low temperature tempering by a medium-high temperature tempering furnace. The method comprises the following steps that each burner nozzle of the medium-high temperature tempering furnace stops burning and hot blast is injected into the medium-high temperature tempering furnace through a hot blast injection pipe, wherein the hot blast injection pipe is led out from a joint between an air automatic valve and an air manual valve of an air pipeline connected with each burner nozzle. According to the method disclosed by the invention, the temperatureuniformity of the low temperature tempering can be improved, the heating efficiency is improved, the high temperature tempering and the low temperature tempering can be totally carried out on one stove, and the investment cost is reduced.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular, the invention relates to a method capable of realizing low-temperature tempering by using a medium-high temperature tempering furnace. Background technique [0002] Usually, the heat treatment production line for 4300mm wide and thick plates has three quenching furnaces, normalizing furnaces and tempering furnaces, which are generally roller hearth furnaces. The quenching furnace and normalizing furnace are indirectly heated by radiant tubes with a protective atmosphere. The tempering furnace is heated by an open flame, and the heat exchanger is concentrated to preheat the combustion air. Generally speaking, there are three ways of tempering: low temperature tempering, medium temperature tempering and high temperature tempering. However, there is no report on how to realize the three tempering processes of high temperature, medium temperature and low temperature in one tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/26
Inventor 马光亭汤化胜李海方魏军广张长宏冯文义刘青刘军刚李岩高海军麻衡
Owner LAIWU IRON & STEEL GRP
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