This page contains a Flash digital edition of a book.
INDUSTRY NEWS/行業新聞


OSU Discovers Sweet Approach to Sand Casting 俄勒冈州立大学发现甜品应用于砂型铸造


Based on a new discovery by researchers at Oregon


State University, Corvallis, Ore., the metalcasting indus- try may soon develop a sweet tooth. Experts in adhesion science in the OSU College of Forestry have discovered and applied for a patent on using sugar as a binder for metalcasting sand molds. “We were surprised that simple sugar could bind sand


together so strongly,” said Kaichang Li, an OSU professor of wood science and engineering. “Sugar and other carbohy- drates are abundant, inexpensive, food-grade materials. Te binder systems we’ve developed should be much less expensive than existing sand binders and not have toxicity concerns.” An inaccurate reading of the temperature in a baking


oven helped lead to the discovery. Li and an OSU faculty research assistant, Jian Huang, identified combinations of sugar, soy flour and hydrolyzed starch, or sugar alone, that work effectively as a binder in sand molds for making various types of metal parts. Still in the discovery phase, this technology is ready


for more applied research and testing, they said, and the university is seeking investors and industrial partners to commercialize it. Private sector financing of OSU research has increased 42% in the past two years, to $35 million, as part of its increasing emphasis on university/ industry partnerships. Sand-based moldings comprise about 70% of all metal


castings. Te sugar and other agricultural products used for this purpose largely decompose into carbon dioxide and water. With the tech- niques developed at OSU, the use of sugar as a binder allows the creation of sand molds that gain strength rapidly and remain strong in high humidity environ- ments, which is necessary for their effective use in industrial applications. 


根据俄勒冈州科瓦利斯市俄勒冈州立大学的研究人 员的新发现,铸造业可能很快会成为一个爱吃甜食的行 业。俄勒冈州立大学林业学院的粘合剂专家发现并申请 了专利,以糖作为粘结剂用于砂型铸造。 “我们惊讶的是单糖可以如此强烈粘合砂粒,”俄 勒冈州立大学木材科学与工程的李开常(音译)教授 说,“糖和其他碳水化合物是充足,价格低廉,食品级 的材料。我们已经开发的粘合剂应该比现有沙粘合剂便 宜得多而且没有毒性。”


一个烘烤炉不准确的温度读数,帮助了发现。李教授 和俄勒冈州立大学的研究助理黄坚(音译)组合糖,大 豆粉,水解淀粉,或只用糖,作为型砂粘结剂,有效地 使用于不同类型的铸件。


他们介绍,这种技术仍处于探索阶段,还需做更多的 应用研究和试验,大学正寻求投资和工业合作伙伴,将 其商业化。作为越来越重视大学/工业合作伙伴关系的一 部分,私营融资部门支持俄勒冈州立大学的研究,在过 去的两年中增长了42%,达到3500万美元。 砂型铸造约占所有铸件的70%左右。用于此目的的 糖和其他农产品在很大程度上分解成二氧化碳和水。在 俄勒冈州立大学开发 的技术,利用糖作为 粘合剂,制造的砂模 可以在高湿度的环境 中快速获得并保持强 度,这是在工业应用 中有效使用必要。 


Simple table sugar may be able to replace some of the chemicals now used as binders in sand molds for the metalcasting industry. (Photo courtesy of Oregon State University)


糖也许能够在铸造业的砂型 铸造中取代目前使用的化学 粘结剂(照片来自俄勒冈州 立大学)


20 | FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION February 2013


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86