The more content of SiO2 in binder and corundum in refractory material, the higher strength shell mold has.Chemical drying technology leads to the strength loss of...

• 粘结剂中二氧化硅含量越高型壳强度越高,耐火材料的刚玉相含量越高型壳强度越高,型壳采用化学干燥硬化导致强度降低。