High temperature oxidation-resistant coated steel plate and hot stamping method thereof
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embodiment 1
[0027]A high temperature oxidation-resistant paint was prepared by mixing binder and aluminum flakes. The weight of micron aluminum flakes added to the paint was 30% of the total weight of the paint. The length of the micron aluminum flakes was 5 to 10 μm. An appropriate amount of dispersing agent was added to make the micron aluminum flakes mix uniformly and completely with binder to obtain a solid content of 50 to 60 wt %.
[0028]The paint was coated onto a manganese-boron steel base material through spraying. The thickness of the coating was 3±1 μm. After coating, the steel plate was baked in oven at 270° C. for 48 seconds. The coated steel plate after baking was placed in an air oven of 930° C. for 5 minutes, and then was quickly transferred to a mold for hot-stamping forming.
[0029]The cross-cut test (ASTM D3359) is performed on the coated steel plate after baking, and the coating did not fall off at all after tape was removed. It represented good coating adhesion between steel pl...
embodiment 2
[0030]A high temperature oxidation-resistant paint was prepared by mixing binder and aluminum flakes. The weight of micron aluminum flakes added to the paint was 15% of the total weight of the paint. The length of the micron aluminum flakes was 5 to 10 μm. An appropriate amount of dispersing agent was added to make the micron aluminum flakes mix uniformly and completely with binder to obtain a solid content of 40 to 50 wt %.
[0031]The paint was coated onto a manganese-boron steel base material through spraying. The thickness of the coating was 5±1 μm. After coating, the steel plate was baked in oven at 150° C. for 36 seconds. The coated steel plate after baking was placed in an air oven of 890° C. for 5 minutes, and then was quickly transferred to a mold for hot-stamping forming.
[0032]The cross-cut test (ASTM D3359) is performed on the coated steel plate after baking, and the coating did not fall off at all when the tape was removed. It represented good adhesion between steel plate a...
embodiment 3
[0033]A high temperature oxidation-resistant paint was prepared by mixing binder and aluminum flakes. The weight of micron aluminum flakes added to the paint was 10% of the total weight of the paint. The length of the micron aluminum flakes was 5 to 10 μm. An appropriate amount of dispersing agent was added to make the micron aluminum flakes mix uniformly and completely with binder to obtain a solid content of 35 to 45 wt %.
[0034]The paint was coated onto a manganese-boron steel base material through spraying. The thickness of the coating was 9±1 μm. After coating, the steel plate was baked in oven at 300° C. for 60 seconds. The coated steel plate after baking was placed in an air oven of 870° C. for 5 minutes, and then was quickly transferred to a mold for hot-stamping forming.
[0035]The cross-cut test (ASTM D3359) is performed on the coated steel plate after baking, and the coating did not fall off at all after tape was removed. It represented good coating adhesion between steel pl...
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Abstract
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