应用冷硬呋喃树脂砂生产的铸件,也会产生粘砂、脉纹、气孔、冲砂和热裂等铸造缺陷,本文就其产生的主要原因及防止措施,作简单的叙述。由于篇幅所限,涉及面又广,则侧重于实用性。由于水平有限,掌握的资料不多,文中谬误之处,望读者批评指正。 The application of cold hard furan resin sand castings, will also have sticky sand, veins, pores, sand and thermal cracking and other casting defects, this article on the main reasons for its prevention and make a brief account. Due to space limitations, involving a wide range, then focus on the practicality. Due to the limited level, not much information available, the fallacy of the article, hope readers criticism and correction.