A leveling liquid with high-efficiency cleaning ability for secondary cold rolling mill
A technology of secondary cold rolling and leveling liquid, which is applied in the field of leveling liquid, can solve the problems of affecting the quality of the coating, the degree of cleanliness has a significant impact on the quality of the coating, and the influence of the conductivity of the plate surface, etc., to achieve the effect of reducing the thickness of the residual and passivation film
Active Publication Date: 2016-01-27
BAOSHAN IRON & STEEL CO LTD
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AI Technical Summary
Problems solved by technology
[0003] Because the leveling liquid has an important influence on the wet leveling quality, scientific and technological workers have carried out a lot of research. The existing technology has only studied the wet leveling that is suitable for a single wet leveling. For the wet leveling liquid that is suitable for the secondary cold rolling wet leveling, There are no related reports
[0004] Chinese Patent No. 200710023703.6 discloses an anti-macular, environment-friendly wet leveling liquid, which contains: organic acid 5-35%, organic amine 5-35%, corrosion inhibitor 2-20%, film-forming agent 2-20% %, film-forming accelerator 1-10%, surfactant 0.1-1%, water 10-35%, the invention uses organic amine and organic acid as compound antirust agent, which has good cleanability and antirust performance, and It has proper lubricating performance, and there is no problem of nitrous acid pollution. The film-forming speed of this leveling liquid is fast, and a protective film can be formed on the surface of the steel plate within 2 minutes, but the formation of this protective film has a great impact on the conductivity of the surface There is a certain influence, which affects the quality of the coating
[0007] To sum up, the leveling liquid currently available on the market takes lubricating performance and anti-rust performance as the performance indicators of the leveling liquid, and for the secondary cold-rolled coated substrate used to produce the coated plate, the cleanliness of the plate surface Significant impact on coating quality
Method used
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Effect test
Embodiment 1
[0031] In Example 1, the leveling solution and deionized water were formulated to a concentration of 5%, and applied to a secondary cold rolling wet leveling machine. The residual oil and carbon residue on the surface of the coated substrate can be controlled at 20mg / m 2 Below, thus obtaining a clean surface that satisfies the production of coated panels.
Embodiment 2
[0032] In Example 2, the leveling solution was formulated to a concentration of 2%, and applied to the secondary cold rolling wet leveling machine, while effectively removing residues on the surface of the leveled steel strip, the leveled substrate can be kept rust-proof for a long time performance.
Embodiment 3
[0033] In Example 3, the leveling solution was prepared to a concentration of 2%, and applied to the secondary cold rolling wet leveling machine. This formula leveling liquid is especially suitable for the second frame of the leveling machine, which can ensure the effective replication of the surface roughness of the leveling roller on the surface of the substrate.
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The invention discloses a smooth liquid with efficient cleaning capability for a secondary cold rolling unit. The smooth liquid comprises the following components by weight percent: 4-20% of cleaning agent, 2-25% of corrosion inhibitor, 0.1-5% of defoaming agent, 0-10% of lubrication promoter and 70-90% of deionized water. The smooth liquid disclosed by the invention has lubricity and anti-corrosion performance when having an efficient cleaning effect, and the requirement of producing a coating substrate with a high-cleanliness surface can be met.
Description
technical field [0001] The invention relates to metallurgical machinery / rolling lubrication technology, in particular to a leveling liquid with high-efficiency cleaning ability for a secondary cold rolling unit. Background technique [0002] The secondary cold rolling unit generally consists of two stands. The 1# stand is used to reduce and thin the strip steel, and the reduction rate is generally 15-40%. The 2# stand is mainly used for strip leveling and shape control. Play a leveling effect. Due to the large deformation of the 1# stand, the emulsion must be used for lubrication, so that there is a layer of rolling oil film on the surface of the strip before the 2# stand. In this way, for the secondary cold rolling wet leveling, there is a big difference from the conventional independent wet leveling requirements. Therefore, for the existing technology, the present invention forms a leveling liquid suitable for secondary cold rolling wet leveling with high-efficiency clea...
Claims
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IPC IPC(8): C10M173/02C10N30/06C10N30/12C10N40/24
Inventor 李秀军瞿培磊
Owner BAOSHAN IRON & STEEL CO LTD