提起弹簧,人人皆晓,谁都确信它是用钢材制成的。一般人都不会想到利用原料丰富、价格便宜的水泥来制作弹簧,因为水泥与钢材相比,抗拉强度差,没有柔性,又很易碎。但是,世界上却是无奇不有。为了解决利用水泥制作弹簧这个难题,美国熔模浇铸学会的科学家们花费了约五年时间,专门研究水泥的性质,搞出了一套新工艺,终于在两年前成功地制造了世界上第一根水泥弹簧。 Lifting the spring, everyone knows, everyone is convinced that it is made of steel. Most people will not think of making springs from cement rich in raw materials and cheap, because cement has poor tensile strength, is not flexible, and is brittle. However, the world is full of wonders. In order to solve the problem of using cement to make springs, the scientists of the American Society of Investment Casting spent about five years specializing in the properties of cement and came up with a new process, and finally succeeded in creating the world’s first two years ago. A cement spring.