product news/產品新聞
additives used to optimize attributes or casting properties. Te polyurethane reaction is comprised of the OH-groups
of the formo-phenolicsin the part 1 which will react with the NCO-(isocyanate) groups in part 2. Te solvents and additives are therefore not part of the chemical backbone of the process. In the new Solvent Less system (SL system), the part 2 has been specially designed to be as effective as a normal part 2 sys- tem, without the use of any solvent. Te patented solvent-free part 2 recipe, including a specific polyisocyanate component and selected additives, has been developed to work together with an adapted part 1. Tis unique combination has shown a 20 % reduction in the amount of binder needed. In comparison with a standard system used on 100 parts
NCO（异氰酸酯）组中的第2部分的第1部分。的溶剂和 添加剂，故此不再的化学主链的过程的一部分。第2部分 在新溶剂系统（SL系统），已专门设计的，是作为一个 正常的第2部分系统一样有效，无需使用任何溶剂。专利 的无溶剂配方，包括一个特定的多异氰酸酯组分和精选 添加剂组成，现已开发一道改编的第1部分。这种独特的 组合已经显示出减少20％的所需量的粘结剂。 在比较，与一个标准的系统上使用的第1部分中，加 100份，100份与在沙中的第2部分，SL系统将允许能够 保持相同的100的第1部分的部分的，但通过仅使用80
Fig. 1. Shown is a comparison of a standard coldbox system and the solventless technology.
图1. 所示是标准的冷芯盒系统与减少溶剂技术的比较。
Fig. 2. Solventless technology improves physical properties.
图2. 减少溶剂技术提高物理性能。 May 2013
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 59
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