Construction process for protecting outer layer of indoor steel structure

A construction technology and steel structure technology, applied in the direction of coating, liquid coating device on the surface, pretreatment of the surface, etc., can solve the problems of loss of support, collapse of steel structure, high temperature resistance, etc., and achieve good results and flowers The effect of less money and reasonable workmanship

Inactive Publication Date: 2014-03-26
ZHEJIANG BOWEI STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As my country's economic situation is getting better and better, steel structures are widely used in construction, bridges, and shipbuilding industries. Under normal circumstances, the strength of the main body of the steel structure is no problem, but the steel structure has two defects: 1. It will rust. 2. It is not resistant to high temperature. If the anti-rust work is not done well, the corrosion will make t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The construction technology of the indoor steel structure outer layer protection described in this embodiment comprises the following steps:

[0039] (1) Cleaning and derusting

[0040] Manually clean the rust on the outer layer of the steel structure, scale, mold sand, welding slag, dust, oil, water and other dirt left by the scale, rust mold making, the surface cleanliness and roughness meet the standard of manual derusting St3, and the soluble salt on the surface Content inspection, construction can be carried out after passing the inspection;

[0041] (2) Apply anti-rust layer

[0042] a: Anti-rust liquid formula: sodium nitrite: 160 parts, sodium hydroxide: 600 parts, water: 1000 parts;

[0043] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add sodium nitrite and stir to dissolve, then add sodium hydroxide and stir to dissolve, then set aside;

[0044] c: Process: After making sure the steel surface is clea...

Embodiment 2

[0068] The construction technology for the protection of the outer layer of the indoor steel structure includes the following steps:

[0069] (1) Cleaning and derusting

[0070] Manually clean the rust on the outer layer of the steel structure, scale, mold sand, welding slag, dust, oil, water and other dirt left by the scale, rust mold making, the surface cleanliness and roughness meet the standard of manual derusting St3, and the soluble salt on the surface Content inspection, construction can be carried out after passing the inspection;

[0071] (2) Apply anti-rust layer

[0072] a: Anti-rust liquid formula: sodium nitrite: 240 parts, sodium hydroxide: 650 parts, water: 1200 parts;

[0073] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add sodium nitrite and stir to dissolve, then add sodium hydroxide and stir to dissolve, then set aside;

[0074] c: Process: After the steel surface is cleaned, dried and degreased, a...

Embodiment 3

[0098] The construction technology for the protection of the outer layer of the indoor steel structure includes the following steps:

[0099] (1) Cleaning and derusting

[0100] Manually clean the rust on the outer layer of the steel structure, scale, mold sand, welding slag, dust, oil, water and other dirt left by the scale, rust mold making, the surface cleanliness and roughness meet the standard of manual derusting St3, and the soluble salt on the surface Content inspection, construction can be carried out after passing the inspection;

[0101] (2) Apply anti-rust layer

[0102] a: Anti-rust liquid formula: sodium nitrite: 200 parts, sodium hydroxide: 620 parts, water: 1100 parts;

[0103] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add sodium nitrite and stir to dissolve, then add sodium hydroxide and stir to dissolve, then set aside;

[0104] c: Process: After making sure the steel surface is cleaned, dried and ...

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PUM

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Abstract

The invention discloses a construction process for protecting the outer layer of an indoor steel structure. The construction process comprises the steps of cleaning, rust removal, dustproof-layer coating, paint coating and site clearing. Inspection shows that the actual duration of fire resistance of the steel structure reaches more than 12-15 hours; cold-thermal cycling test is conducted on the structure of the outer layer 10 times, the appearance is complete, cracking and powdering do not occur, no corrosion phenomenon occur when the whole steel structure is soaked in water for 120 hours, the process is reasonable, little money is cost and the protection effect is good; by applying the construction process, the duration of fire resistance and corrosion resistant time of the steel structure can be prolonged substantially, and the steel structure safety and personal safety are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of steel structure fire protection, and in particular relates to a construction technique for protecting the outer layer of an indoor steel structure. Background technique [0002] As my country's economic situation is getting better and better, steel structures are widely used in construction, bridges, and shipbuilding industries. Under normal circumstances, the strength of the main body of the steel structure is no problem, but the steel structure has two defects: 1. It will rust. 2. It is not resistant to high temperature. If the anti-rust work is not done well, the corrosion will make the steel structure material thinner, resulting in the collapse of the steel structure, and the fire will cause the mechanical properties of the steel structure, such as compressive strength, load capacity, and yield strength to decline rapidly. It will soon soften and deform, lose its supporting force, and cause the stee...

Claims

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Application Information

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IPC IPC(8): B05D7/14B05D3/12B05D3/04C09D5/08C09D131/04C09D123/08C09D5/18
Inventor 盛雷军王有路
Owner ZHEJIANG BOWEI STEEL STRUCTURE
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