A kind of anti-scouring protective coating for spray belt bag and preparation method thereof
A technology of protective coating and spray tape package, which is applied in the direction of coating, metal material coating process, solid state chemical plating, etc., which can solve the scratches on the surface of the strip, the inability to meet the erosion resistance of the spray tape package, and pollute high-temperature steel Liquid and other problems to achieve the effect of ensuring adhesion and erosion resistance, meeting the needs of anti-erosion protection, and reducing labor intensity
Active Publication Date: 2015-09-30
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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Problems solved by technology
[0003] The main body of the spray bag is mainly a refractory material made of SiC combined with clay. However, after a long period of scouring by the high-temperature molten steel, a certain amount of impurities will be precipitated on the inner surface of the spray bag crucible and spray cup, which will pollute the high-temperature steel. Liquid, which has a serious impact on the quality of amorphous thin strip products
Due to the narrow width of the spray seam, usually less than 1mm, when the high-temperature molten steel containing impurities passes through the spray seam continuously, the impurities gradually accumulate at the spray seam, causing scratches and burrs on the surface of the strip, and serious Consequences such as blockage of the spray slot, strip bifurcation, stop spraying, etc.
[0005] The material of the coating used in the spray tape package in the prior art is Al 2 o 3 , which cannot meet the requirements of the anti-scourability of the spray bag. After being washed by the high-temperature molten steel for a certain period of time, a certain amount of impurities will be precipitated on the inner surface of the spray bag crucible and the spray cup, polluting the high-temperature molten steel, and affecting the amorphous strip. Serious impact on product quality and production
Method used
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[0027] The preparation method of the coating of the present embodiment, its steps are as follows,
[0028] Step 1: prepare coating, the ZrO that is 8~9 parts by weight 2 , Mix 31-62 parts of aluminum dihydrogen phosphate solution with a mass concentration of 20% and 10-20 parts of pure water evenly, and set aside;
[0029] Step 2: apply primer, and paint 10-35 parts by weight of aluminum dihydrogen phosphate solution with a mass concentration of 20% on the inner wall of the spray bag crucible and the spray cup to make it evenly transparent;
[0030] Step 3: Apply the coating, and apply the evenly mixed coating in step 1 to the inner wall of the spray bag crucible and spray cup coated with primer in step 2;
[0031] Step 4: Drying, place the crucible and spray cup painted in step 3 in an environment of 60-100°C for 2-6 hours, and then dry in an environment of 400-500°C;
[0032] Step 5: Molding, place the dried spray bag crucible and spray cup in an environment of 1400-1500°C...
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Abstract
The invention relates to a coating used for inner surfaces of a belt spray ladle crucible and a spray cup. The coating has anti-scouring protection for the inner surfaces, and lowers pollutions for high temperature liquid steels. The invention also relates to a preparation method for the coating. Coating materials of the coating are composed of 80%-90% of ZrO2 in weight percent, and 10%-20% of Al2O3 in weight percent. The method comprises the following steps: step 1, preparation of the coating materials, step 2, coating of primary glue, step 3, brushing of the coating materials, step 4, drying, and step 5, formation. The coating materials are suitable for the inner surfaces of the belt spray ladle crucible and the spray cup and have the anti-scouring protective effect; the preparation method is simple and has good effect.
Description
technical field [0001] The invention relates to a coating used for spraying the inner surface of a crucible and a spray cup to protect the inner surface against erosion and reduce pollution to molten steel at high temperature. The invention also relates to a preparation method of the coating. Background technique [0002] Amorphous soft magnetic materials have excellent comprehensive properties, such as high strength, high hardness, wear resistance, corrosion resistance, high magnetic permeability and low loss, etc., and have been developed rapidly in recent years, especially in the field of amorphous distribution transformers. At present, the amorphous strip is mainly produced by the single-roll quick quenching method, and the tape spray bag is an important equipment. The spray belt package is mainly composed of a spray bag crucible and a spray cup. There is a spray slot at the bottom of the spray cup. The high-temperature molten steel passes through the inside of the spray...
Claims
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IPC IPC(8): C23C20/08
Inventor 魏文喜姜桂君
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD