Study on Modified Furan Resin Foundry Binder Systems for Large Steel Castings
Based on the conventional resin synthesis process, Modified by adding organic matter of polyphenols, a new furan resin foundry binder systems used for the production of moulds or cores of large steel castings were developed. The new resin binder systems are characterized by having low-emission toxic gas (free formaldehyde is less than O. 1％) , high tensile strength of mould or core sand(more than 1. 6 MPa) and good collapsibility after pouring. At the same time, the composition of the conventional sulphonic acid hardener for no-bake furan resin has also been adjusted to decrease the S content of the hardener and extend the bench life of mould or core sand, the S content of the adjusted suiphonic acid hardener is lower than conventional one by about 20％-50％ and the bench life of mould or core sand may be extended to more than 60min. The article also describes the successful application of the new furan resin foundry binder systems in large steel castings.
large steel castings modified furan resin low sulphur content hardener bench life
Tan Rui Liu Jiajun Zhang Xin Li Ling Li Hankun Yin Shaokui
Shenyang Research Institute of Foundry, Shenyang 110022, China
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
996-999
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）