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Repair method for solving water leakage of water seal tank of heating furnace

A repair method and heating furnace technology, applied in the field of iron and steel production, can solve the problems of corrosion and leakage of the water sealing tank medium, pitting corrosion of the inner wall of the water sealing tank, perforation of the water sealing tank, etc., to achieve the effect of ensuring anti-corrosion performance and strength

Pending Publication Date: 2021-09-21
NANJING IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, due to the corrosive medium on the inner wall of the water seal tank, it also causes pitting corrosion on the inner wall of some water seal tanks, resulting in corrosion and perforation of the water seal tank, which is mainly manifested by medium corrosion leakage in the water seal tank

Method used

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  • Repair method for solving water leakage of water seal tank of heating furnace
  • Repair method for solving water leakage of water seal tank of heating furnace

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Embodiment Construction

[0030] This embodiment provides a repair method for solving the water leakage of the water seal tank of the heating furnace, including:

[0031] S1. Surface treatment is carried out on the bottom surface of the heating furnace water tank. According to the on-site observation and thickness test results, water blasting method or manual method is selected for derusting. The grade is in accordance with GB 8923-88 "Steel Surface Corrosion Grade and Rust Removal Grade before Painting" Sa1 grade; some parts are manually derusted, and the quality reaches the St1 grade specified in the above standard;

[0032] S2. Carry out leak control for corrosion leaks, and adopt the method of fast bonding of steel plates;

[0033] S3. Carry out a primer on the bottom surface of the heating furnace water tank, using a roller coating method;

[0034] S4. Set reinforcement layer 1 for the bottom surface of the heating furnace water tank, adopt carbon fiber spreading method, and carry out once, the f...

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Abstract

The invention discloses a repair method for solving water leakage of a water seal tank of a heating furnace, and relates to the technical field of steel production. The repair method specifically comprises the following steps: S1, conducting surface treatment on the bottom surface of a heating furnace water tank; S2, conducting leakage point treatment conducted on the corrosion leakage points, and adopting a steel plate rapid attaching mode; S3, conducting primary prime coating on the bottom face of the heating furnace water tank, and adopting a brush coating or roll coating mode; S4, arranging a first reinforcing layer on the bottom face of the heating furnace water tank, and adopting a carbon fiber spreading mode; S5,conducting secondary prime coating on the bottom face of the heating furnace water tank, and adopting a brush coating or roll coating mode; S6, conducting primary floating coating on the surface of the pipeline, and adopting a blade coating mode; S7, arranging a second reinforcing layer on the surface of the pipeline, and adopting a macroporous fiberglass mesh winding and spreading mode; S8, conducting secondary floating coating on the surface of the pipeline, and adopting a blade coating mode; and S9, enabling the surface of the pipeline to be subjected to surface coating, and adopting a brush coating or roll coating mode. The phenomenon of water leakage of the water seal tank at the bottom of the heating furnace is avoided, and the hidden danger of gas leakage of a water seal tank due to low water level is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a repair method for solving water leakage in a water seal tank of a heating furnace. Background technique [0002] Severe corrosion of the water seal groove at the bottom of the furnace often occurs in the heating furnace of the medium and heavy plate coil factory, and water leakage occurs in many places. After investigation, it was found that the main reasons for corrosion perforation or corrosion thinning are: the water seal tank has been in operation for a long time, the original anti-corrosion layer has lost its effect, and the heating furnace uses mixed gas from coke oven, blast furnace and converter, and the medium Contains highly corrosive tar, benzene, naphthalene, dilute sulfuric acid, etc., which cause corrosion to the water seal tank, mainly manifested as corrosion bulges on the outer wall of the water seal tank, corrosion and layered peeling on the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/18B05D1/38B05D7/00B05D7/14B24B27/033B24C1/08
CPCF27D1/18B05D7/14B05D7/58B05D1/38B24B27/033B24C1/086
Inventor 熊铁桥凌继中吴刚胡宗曹再兵单猛
Owner NANJING IRON & STEEL CO LTD
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