Application of Phenolic Urea Alkanes Resin Sand in Patternless Forming Process

Author of the article:SHAO Chunyan, YANG Wenliang, SUN Liang, XU Jifu

Author's Workplace：Beijing National Innovation Institute of Lightweight Ltd., Beijing 100083, China

Key Words：phenolic urea alkanes resin; gravity compaction process; milling process; tensile strength

Abstract：Using 106~212 μm washed sand as molding material and phenolureane resin as binder, the sand blank was
produced by gravity shock compaction process, and the sand mold was prepared by milling process. The results show that
by adjusting the type of catalyst and the amount of catalyst, the solidification time of sand mold varies in the range of 5~60
min, which can meet the requirements of different beats. At the same time, when the resin content is 1.5%~2.0%, the tensile
strength ofsand mold can reach more than 1.8~2.5 MPa, which meets the technological requirements ofmilling sand mold.