a difficult foundry problem about the cast shaping of the small and deep holes in the heavy section steel castings can be solved by using the no bake sand. for making cores.
用这种型砂制作型芯,可解决厚大铸钢件内不易铸出的小径深孔腔室的成形难题。
technical properties and some factors of influence of the pepset no bake resin bonded sand when applied on aluminium castings are studied.