我所第六研究室在覆膜砂工艺研究中,今又获得新的突破,成功的研制出耐高温壳型(芯)覆膜砂。该覆膜砂不仅具有优良的高温性能:高温抗压强度>0.4MPa(常规覆膜砂<0.2 MPa);耐热时间>150s(常规覆膜砂<80s)。而且具有良好的流动性、脱模性和落 Our sixth laboratory in coated sand technology research, and now get a new breakthrough, the successful development of high temperature shell (core) coated sand. The coated sand not only has excellent high temperature properties: high temperature compressive strength> 0.4MPa (conventional coated sand <0.2 MPa); heat-resistant time> 150s (conventional coated sand <80s). And has good fluidity, mold release and fall