Method for manufacturing ceramic steel sheet

Abstract

The present invention relates to a method for manufacturing a ceramic steel sheet and, more particularly, to a method for coating ceramic on one surface of a steel sheet, the method comprising the steps of: (a) installing a mold made of a refractory material for a thermite reaction on one surface of a plate-shaped steel sheet; (b) injecting a thermite mixture (M) as a reaction material into the mold so as for the thermite mixture to be uniformly distributed at a predetermined height on one surface of the steel sheet; (c) injecting an ignition material (I) onto the thermite mixture (M) after the step (b) and then igniting the ignition material (I) to induce a thermite reaction of the thermite mixture (M); and (d) pressing a press machine against the thermite mixture (M) in a molten state after the step (c) to form a ceramic layer having a predetermined shape on one surface of the steel plate.

1 . A method for coating one surface of a steel sheet with ceramic, comprising the steps of:
 (a) installing a mold made ( 200 ) of a refractory material for a thermite reaction on one surface of a plate-shaped steel sheet;   (b) introducing a thermite mixture (M) as a reaction material into the mold ( 200 ) so as to be uniformly distributed at a predetermined height on one surface of the steel sheet ( 100 );   (c) introducing an ignition material (I) to the thermite mixture (M) after the step (b) and then igniting the ignition material (I) to induce the thermite reaction of the thermite mixture (M); and   (d) pressing the thermite mixture (M) in a molten state with a press machine ( 300 ) after the step (c) to form a ceramic layer having a predetermined shape on the one surface of the steel plate.   
     
     
         2 . The method of  claim 1 , wherein the thermite mixture (M) for the reaction material comprises iron oxide powder having a size of 10 to 30 mesh, aluminum powder having a size of 30 to 80 mesh, and titanium carbide powder having a size of 5 to 40 mesh,
 wherein the ignition material (I) is made of magnesium powder   wherein, in the step (c), a reaction rate is lowered by the titanium carbide during the thermite reaction to prevent each constituent powder from being scattering by the reaction such that the thermite reaction is easily caused.   
     
     
         3 . The method of  claim 1 , wherein a weight ratio of a mixture of the iron oxide powder and the aluminum powder to the titanium carbide powder is 9:1. 
     
     
         4 . The method of  claim 1 , wherein the mold ( 200 ) is fabricated to match shapes of various steel sheets and is installed on the one surface of the steel sheet ( 100 ). 
     
     
         5 . The method of  claim 1 , wherein the press machine ( 300 ) further comprises a press plate ( 310 ) configured to press the thermite mixture (M) in a molten state, a portion of a lower surface of the press plate being formed to protrude in various shapes,
 wherein a ceramic layer is formed on the one surface of the steel plate ( 100 ) by the press plate ( 310 ) in the step (d) so as to conform to a protruding shape of the press plate ( 310 ).