Jumping type air tightness test construction method for continuous annealing furnace

Abstract

The invention specifically relates to a jumping type air tightness test construction method for a continuous annealing furnace. The method is characterized in that a heating furnace is divided into afirst furnace section and a second furnace section; the first furnace section includes a preheating section, a first heating section and a second heating section; the second furnace section includes athird heating section, a soaking section, a slow cooling section, a fast cooling section, an over-aging section and a balancing section; air tightness test is carried out on the first furnace section; and the fast cooling section in the second furnace section is isolated, the slow cooling section and the over-aging section are connected by a connecting pipe, air tightness test is carried out simultaneously on the slow cooling section and the over-aging section, and air tightness test is carried out separately on the fast cooling section. When the construction progress of the fast cooling section lags behind the other furnace areas and air tightness test cannot be carried out simultaneously on all sections from the third heating section to the balancing section, through air tightness testusing the construction method of the invention, idleness of construction personnel can be avoided, the total duration of initial air tightness test on the second section of the furnace area can be shortened, and the total duration of furnace drying, threading and trail production can be guaranteed.

Description

technical field [0001] The invention relates to the field of installation of a continuous annealing furnace, in particular to a construction method for a bin-jump type air-tightness test of a continuous annealing furnace. Background technique [0002] In the cold rolling continuous annealing unit, each section of the furnace shell of the annealing furnace is formed by vertically combining layers of furnace shells. The annealing furnace is compact in structure and complex in function. Generally, it consists of a preheating section (JPF), a radiant tube heating section (RTF), a soaking section (SF), a slow cooling section (SCS), a fast cooling section (FC), and an overaging section ( OAS), equalization segment (ES). [0003] The airtight test of the annealing furnace refers to that after all the steel structures, radiant tubes, electric heating elements, furnace rollers and other mechanical equipment and process piping tasks in the furnace area are completed, some parts of th...

AI Technical Summary

Problems solved by technology

[0005] Due to the complex construction process of the fast cooling section, it brings certain difficulties to the construction and installation during the installation of mechanical equipment and pipelines. Similarly, the installation period of the fast cooling section is also affected to a certain extent

Normally, when both the overaging section (OAS) and the equalization section (ES) have reached the air tightness test conditions, the fast cooling section (FC) has not yet reached

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