论文部分内容阅读
用常温固化型树脂砂造型(制芯)法来生产铸件具有一系列的优越性。但为了得到更大的经济效益,除了进一步提高树脂与催化剂的质量、降低成本;不断完善工装与工艺;以及研制高效、低耗、性能可靠的成套设备外,对所使用的原砂及再生砂的质量亦必须给予足够的注意,一定要有完善的旧砂再生装置及严格的原砂管理措施。在这样的前提下,旧砂经再生后有95％左右可以重新用于造型和制芯,相应只需补加约5％的新砂。只有这样才能充分利用资源、减少废弃物的排放,既保护了环境又提高了经济效益。下面仅就有关原砂及再生砂的质量要求方面作一简短叙述,供参考。
With room temperature curing resin sand molding (core) method to produce castings has a series of advantages. However, in order to obtain greater economic benefits, in addition to further improve the quality of resins and catalysts, reduce costs; continuous improvement of tooling and technology; and the development of efficient, low-cost, reliable performance of complete sets of equipment, the use of the original sand and recycled sand The quality must also be given adequate attention, there must be a sound old sand regeneration device and strict management of the original sand. Under such a premise, about 95% of the old sand is regenerated and can be repurposed for modeling and core making, with a corresponding addition of about 5% of new sand. Only in this way can we make full use of resources and reduce waste discharge, which not only protects the environment but also enhances economic benefits. The following is only a brief account of the quality requirements of raw sand and reclaimed sand for reference.