Surface anti-corrosion coating pretreatment process for cold-rolled steel sheet welding structural part

A technology of welded structure and cold-rolled steel plate, which is applied to the device for coating liquid on the surface, the treatment device for used abrasives, and the surface pretreatment. , affecting the mechanical properties of materials, etc., to avoid industrial waste water and even hazardous waste solutions, environmental protection automatic continuous production, and good surface cleanliness.

Pending Publication Date: 2022-04-22
SHENYANG TIANTONG ELECTRICITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a pre-treatment process for surface anti-corrosion coating of cold-rolled steel plate welded structural parts, which solves the problem that in the background technology there are many treatment procedures, a large amount of industrial wastewater or even hazardous waste solution generated during the treatment process is difficult to handle, and the treatment process is affected. Disadvantages such as material mechanical properties and affecting equipment performance

Method used

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  • Surface anti-corrosion coating pretreatment process for cold-rolled steel sheet welding structural part
  • Surface anti-corrosion coating pretreatment process for cold-rolled steel sheet welding structural part
  • Surface anti-corrosion coating pretreatment process for cold-rolled steel sheet welding structural part

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Embodiment 1

[0017] See figure 1 , a pretreatment process for surface anti-corrosion coating of cold-rolled steel plate welded structural parts is as follows: high-temperature evaporation is performed on the surface of cold-rolled steel plate welded structural parts to remove surface anti-rust oil, and the surface of cold-rolled steel plate welded structural parts after high-temperature evaporation and degreasing is carried out. Shot blasting treatment; the workpiece 1 is suspended on the conveyor chain 3 through the hanger 2, and the conveyor chain transports the workpiece through the drying kiln 4 and the shot blasting machine 5 in turn; the drying kiln is equipped with an oil and gas treatment device 6; a cold-rolled steel plate welding Structural parts, the material is DC01, the thickness is 1.0mm, the surface of the cold-rolled steel plate is protected by moderate anti-rust oil, and the degreasing area is about 100m 2 ; The surface of the welded structure of the cold-rolled steel plat...

Embodiment 2

[0026] The difference between embodiment 2 and embodiment 1 is that the workpiece is a cold-rolled steel plate welded structure with an inner cavity structure, see figure 2 , the workpiece is the radiator of the oil-immersed transformer. The heat dissipation channel for the flow of transformer oil is formed by the upper and lower headers and the sheet type with inner cavity. The size of the radiator is: width 500mm, height 2000mm, 25 sets of sheet type, 97% of its material is DC01, cold-rolled steel plate with a thickness of 1.0mm, the surface of the cold-rolled steel plate is protected by moderate anti-rust oil, and its degreasing area is about 100m 2 .

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Abstract

The invention discloses a surface anti-corrosion coating pretreatment process for a cold-rolled steel sheet welded structural member, which comprises the following steps: heating the cold-rolled steel sheet welded structural member to 200-240 DEG C, decomposing anti-rust oil attached to a cold-rolled steel sheet, vaporizing, evaporating and separating from the surface of the structural member, purifying evaporated grease gas in a waste gas treatment system, and discharging. The workpiece subjected to high-temperature evaporation oil removal enters a shot blasting treatment procedure in the pretreatment process, the process requirements for removing a welding oxide layer, rust, edge burrs and the like on the workpiece are met in the shot blasting process, the surface cleanliness of the workpiece reaches Sa2.5, and safe and environment-friendly automatic continuous production is achieved through the surface anti-corrosion coating pretreatment process.

Description

Technical field: [0001] The invention relates to the field of metal surface pretreatment, in particular to a pretreatment process for surface anticorrosion coating of cold-rolled steel plate welded structural parts. Background technique: [0002] Because of its easy processing and forming characteristics, cold-rolled steel sheets are widely used in processed products of metal materials. The steel plate is processed into metal products by forming and welding methods, and then the surface is coated to achieve the appearance and anti-corrosion requirements of the product. [0003] In order to ensure the quality of the appearance coating, the surface needs to be degreased and derusted before coating. However, the current pretreatment method for the surface of welded structural parts of cold-rolled steel plates generally uses a degreasing agent to clean the surface oil. Use pickling agent to clean the welding scale on the metal surface; or first perform shot blasting treatment o...

Claims

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Application Information

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IPC IPC(8): B24C1/08B24C9/00B05D3/00
CPCB24C1/086B24C9/00B24C9/006B05D3/002
Inventor 王雪赵子畯张佩军吴春雪赵晨李建曲寿晴刘航王越凡张立彬
Owner SHENYANG TIANTONG ELECTRICITY
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