The invention discloses a method for producing
rare earth high-carbon low
alloy steel scaleboard, which comprises shaping step,
smelting step and thermal treating step. Wherein, the shaping step comprises wet sand shaping step and EPC disappear mould shaping step; the wet sand shaping step uses 40-100 deals of artificial
quartz sand while the
silicon content is not less than 98%; the back sand uses
river sand; the material ration is:
quartz sand in 100%, alta-mud in 7-8%, water in 4-6%; and said step also uses separate sand, pestle sand, gas hole,
draw plate, and shaping tank; EPC disappear mould shaping step uses
quartz sand, one-dimension vibration shaping; the
smelting step uses acidic furnace liner and double
slag method; the thermal treating step first heats the scaleboard to 600-650Deg. C to keep said temperature for 1-2 hours, and than heats it to 900-960Deg. C and keeps 2-3 hours, than cooling it with water to 380-420Deg. C, to be cooled into
room temperature via air, at last heats it to 200-400Deg. C and keeps 3-5 hours, than cooling it via air. The ball grinder scaleboard produced by said method has high friction resistance, without plastic
distortion and breakage, while it has lower cost and easy maintenance.