Properties of modified phenol resin, precoated sandpreparation and property test have been narrated.
叙述了改性酚醛树脂的性能、及膜砂制备配方及其性能测定。
2
With control of PLC on sandpreparation automation line level of automation and reliability has been increased, breakdown lowered and maintenance easy.
用可编程序控制器控制砂处理自动线，提高了该线的自动化程度和可靠性，故障率低，维修方便。
3
This paper introduces the principle and structure of Model SSKJ molding sand moisture tester designed and made of authors 'own, and its application in sandpreparation line.