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Steel structure surface protection process

A technology for steel structure and surface layer, which is applied in coating, surface pretreatment, and device for coating liquid on the surface, etc. It can solve the problems of corrosion and high temperature resistance of steel structure, and achieve good effect, low cost and guarantee. and personal safety

Inactive Publication Date: 2014-04-09
ZHEJIANG BOWEI STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the corrosion of steel structures, the defects of high temperature resistance have been ignored by people, and the issue of anti-corrosion and heat insulation protection of steel structures should be actively concerned

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The steel structure surface protection process described in this embodiment comprises the following steps:

[0032] (1) Derusting the surface of the steel structure

[0033] Use manual mechanical derusting, rust on the surface of the steel structure, oxide skin, mold sand, welding slag, dust, oil, water and other dirt left by rust molding, use grinder, wire brush, emery cloth and other tools to derust, the surface The cleanliness and roughness meet the standard of St2.5 for manual derusting, and the content of soluble salt on the surface needs to be inspected, and the construction can be carried out after passing the inspection;

[0034] (2) Apply anti-rust layer

[0035] a: prepare raw materials according to the formula of phosphoric acid: 5 grams, manganese peroxide: 10 grams, calcium nitrite: 100 grams, water: 1000 grams;

[0036] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add phosphoric acid, manganese per...

Embodiment 2

[0054] The steel structure surface protection process includes the following steps:

[0055] (1) Derusting the surface of the steel structure

[0056]Use manual mechanical derusting, rust on the surface of the steel structure, oxide skin, mold sand, welding slag, dust, oil, water and other dirt left by rust molding, use grinder, wire brush, emery cloth and other tools to derust, the surface The cleanliness and roughness meet the standard of St2.5 for manual derusting, and the content of soluble salt on the surface needs to be inspected, and the construction can be carried out after passing the inspection;

[0057] (2) Apply anti-rust layer

[0058] a: prepare raw materials according to the formula of phosphoric acid: 10 grams, manganese peroxide: 15 grams, calcium nitrite: 110 grams, water: 1100 grams;

[0059] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add phosphoric acid, manganese peroxide, and calcium nitrite, st...

Embodiment 3

[0077] The steel structure surface protection process includes the following steps:

[0078] (1) Derusting the surface of the steel structure

[0079] Use manual mechanical derusting, rust on the surface of the steel structure, oxide skin, mold sand, welding slag, dust, oil, water and other dirt left by rust molding, use grinder, wire brush, emery cloth and other tools to derust, the surface The cleanliness and roughness meet the standard of St2.5 for manual derusting, and the content of soluble salt on the surface needs to be inspected, and the construction can be carried out after passing the inspection;

[0080] (2) Apply anti-rust layer

[0081] a: prepare raw materials according to the formula of phosphoric acid: 15 grams, manganese peroxide: 20 grams, calcium nitrite: 120 grams, water: 1200 grams;

[0082] b: Preparation method: Prepare the materials according to the proportion, pour water into the bucket, add phosphoric acid, manganese peroxide, and calcium nitrite, s...

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Abstract

The invention discloses a steel structure surface protection process including cleaning, descaling, rust-resistance layer coating and site cleaning. The actual duration of fire resistance in a steel structure processed by the process can be more than 12 to 15 hours, coating is tested in heat and cold cycles, the appearance of the steel structure can be maintained completely without cracking and crushing for 10 to 20 years, the entire service life of the steel structure can be prolonged by 2 to 3 times, and the process is reasonable, low in cost and good in effect; by adopting the process, the duration of fire resistance and rust-resistant time of the steel structure can be prolonged greatly, and the steel structure and personal safety can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of steel structure fire prevention, and in particular relates to a steel structure surface layer protection process. Background technique [0002] As a form of high-rise building structure, steel structure is widely used in construction, shipbuilding and other industries due to its high strength, light weight, good extensibility and earthquake resistance. However, due to the corrosion of steel structures, the defect of not being resistant to high temperatures has been ignored by people, and the issue of anti-corrosion and heat insulation protection of steel structures should be actively concerned. Therefore, the steel structure urgently needs a "protective layer" for anti-corrosion and fire prevention. Contents of the invention [0003] In order to solve the above problems, the invention discloses a steel structure surface protection process, which can prevent the steel structure from rust and fire, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/24B05D3/10C09D127/24C09D7/12
Inventor 盛雷军王有路
Owner ZHEJIANG BOWEI STEEL STRUCTURE
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