树脂砂铸件是统称，在造型、制芯前砂粒表面上已覆有一层固态树脂膜的型砂 、芯砂称为覆膜砂，也称壳型(芯)砂。它最早是一种热固性树脂砂，由德国克罗宁(CRONING)博士于1944年发明。树脂砂铸件就是把原砂和树脂混合后形成树脂砂，把树脂砂打入模具型腔中，通过加热或催化剂方法使其成型，成型后的坭芯再放入浇铸模具中进行浇铸。树脂砂铸件具有表面粗糙度小，尺寸精度高，品质好的特点。
介绍了铸件内腔表面因树脂砂芯引起的飞翅缺陷，并对其名称和形成机理进行了探讨。
The finning defects on inner surfaces of castings caused by resin sand cores were introduced, their names and definitions were discussed.
呋喃树脂砂用于铝合金铸造时，特别是对于一些大型、薄壁铝合金铸件，型芯的溃散性较差。
Furan resin sand is poor in collapsibility when it is used for al alloy casting, specially for some large, thin section castings.
介绍了我公司在应用碱性酚醛树脂砂工艺生产汽轮发电机铝合金铸件导风环的过程中，对制芯工艺进行的改进。
Improvement of core-making technology was conducted by adopting basic phenolic resin sand for aluminum alloy air guide ring in the turbogenerator produced by Harbin Rlectric Machine Co.
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