Coatings capable of protecting metal and enhancing heat transfer during metallic object heating process
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A heating process and metal strengthening technology, applied in the direction of coating, etc., to achieve the effect of preventing steel from sticking, broad application prospects, and increasing heating speed
Inactive Publication Date: 2008-07-23
BAOSTEEL ENG & TECH GRP
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Problems solved by technology
[0012] The task of the present invention is to provide a coating that can protect metals and enhance heat transfer in the heating process of metal objects, which solves the problem that existing high-temperature coating products cannot be used in the heating process of metal materials or workpieces to protect metals and enhance heat transfer
Method used
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preparation example Construction
[0025] The preparation method of the functional coating is that the above weight components of the functional coating are uniformly mixed to form a viscous fluid, which is suitable for coating by corresponding spraying, roller coating or brushing machines.
[0026] The coating application method of this functional coating is to apply the functional coating to the heating process in the post-processing of the metal casting slab, that is, the process before the thermal processing of the metal casting slab, after the metal casting slab is cut and segmented, and before entering the furnace. In addition to the step of coating materials or workpieces, heating is performed after coating functional coatings on the surface of heated metal objects. Applying the coating of the functional paint to the production line process improves the metal yield and reduces the loss of trace elements in the metal.
[0027] The functional coating can be a single-function coating, forming a coating laye...
Embodiment 1
[0032] The weight components of this functional coating are: 400 parts of SIC, 0 parts of chromite ore, 200 parts of clay powder, 100 parts of carbon black, 20 parts of titanium dioxide, 20 parts of lithopone, 20 parts of zinc powder, 100 parts of AL2O3, PA80 glue 600 parts, water is the balance.
Embodiment 2
[0034] The weight components of this functional coating are: 100 parts of SIC, 400 parts of chromite ore, 100 parts of clay powder, 0 parts of carbon black, 5 parts of titanium dioxide, 5 parts of lithopone, 5 parts of zinc powder, 0 parts of AL2O3, PA80 glue 600 parts, water is the balance.
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Abstract
The invention relates to a coating to reinforce the metal heat transfer in the metal heating process, which is characterized in that the weight component of the coating comprises 100 to 400 SiC, 0 to 400 ferrochromium ore, 100 to 200 bentonite, 0 to 100 black carbons, 5 to 20 titanium dioxide, 5 to 20 lithopone, 5 to 20 zinc powder, 30 to 100 Al2O3, and 200 to 600 glue PA80s, which are solid state component grain with below 320 meshes, and the balance is water. When in use, the coating is applied on the surface of the heating workpiece, the coated workpiece is positioned inside the furnace to heat up, that is to dress a piece of clothes for the workpiece, protecting the metal and reinforcing heat transfer. The coating to reinforce the metal heat transfer in the metal heating process has the advantages of being particularly applicable to the heating process in the subsequent machining process for a metal casting blank which is between after casting blank and before heating process, and between after the casting blank segmentation and before positioning inside the furnace, and enabling to be coated on the metal surface by the means of brush coating, immerse coating, roller coating or spray coating.
Description
technical field [0001] The present invention relates to metal coatings, and relates to a coating used in the heating process of metal materials or workpieces, such as metal casting blanks before thermal processing, after metal casting blanks are cut and segmented, and before entering the furnace, especially a coating used in metal materials or workpieces. Coatings used to protect metals and enhance heat transfer during heating processes. Background technique [0002] Metal materials or workpieces such as steel ingots, steel billets, steel plates and other metal objects need to be heated in industrial furnaces during the thermal processing process. At present, the method of putting the workpiece exposed into the industrial furnace for heating has the following two disadvantages: [0003] 1. Mass transfer occurs between the metal material and the gas in the furnace during the heating process. [0004] (1) A chemical reaction occurs between the metal and the oxygen in the fur...
Claims
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Application Information
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