Furan resin laminating core sand for train component casting and preparing method of furan resin laminating core sand

The invention discloses a furan resin laminating core sand for train component casting and a preparing method of the furan resin laminating core sand. The furan resin laminating core sand is prepared from, by weight, 140-160 parts of fused magnesite, 30-40 parts of chromite sand, 20-30 parts of ceramsite sand, 14-16 parts of glass pumice, 3-5 parts of furan resin, 0.5-0.7 part of molecular distillation monoglyceride, 2-4 parts of aluminophosphite, 3-5 parts of calcium stearate, 8-10 parts of spherical quartz powder, 3-5 parts of nanometer tungsten oxide, 5-7 parts of silicon boride and the like. According to the furan resin laminating core sand, the furan resin, the aluminophosphite, tri (4-hydroxyphenyl) methane glycidyl ether and triethylene tetramine are added for providing good caking property and solidification effect for the core sand, a resin curing agent prepared from toluenesulfonic acid and methyl sulfate is used for shortening resin hardening time, the concentration of formaldehyde in air in an ope